Science.gov

Sample records for 105-k west basin

  1. Characterization of Suspect Fuel Rod Pieces from the 105 K West Basin

    SciTech Connect

    Delegard, Calvin H.; Schmidt, Andrew J.; Pool, Karl N.; Thornton, Brenda M.

    2006-07-25

    This report provides physical and radiochemical characterization results from examinations and laboratory analyses performed on {approx}0.55-inch diameter rod pieces found in the 105 K West (KW) Basin that were suspected to be from nuclear reactor fuel. The characterization results will be used to establish the technical basis for adding this material to the contents of one of the final Multi-Canister Overpacks (MCOs) that will be loaded out of the KW Basin in late FY2006 or at a later time depending on project priorities. Fifteen fuel rod pieces were found during the clean out of the KW Basin. Based on lack of specific credentials, documentation, or obvious serial numbers, none of the items could be positively identified nor could their sources or compositions be described. Item weights and dimensions measured in the KW Basin indicated densities consistent with the suspect fuel rods containing uranium dioxide (UO2), uranium metal, or being empty. Extensive review of the Hanford Site technical literature led to the postulation that these pieces likely were irradiated test fuel prepared to support of the development of the Hanford ''New Production Reactor'', later called N Reactor. To obtain definitive data on the composition of the suspect fuel, 4 representative fuel rod pieces, with densities corresponding to oxide fuel were selected from the 15 items, and shipped from the KW Basin to the Pacific Northwest National Laboratory's (PNNL) Radiological Processing Laboratory (RPL; also known at the 325 Building) for examinations and characterization. The three fuel rod that were characterized appear to contain slightly irradiated UO2 fuel, originally of natural enrichment, with zirconium cladding. The uranium-235 isotopic concentrations decreased by the irradiation and become slightly lower than the natural enrichment of 0.72% to range from 0.67 to 0.71 atom%. The plutonium concentrations, ranged from about 200 to 470 grams per metric ton of uranium and ranged in

  2. Characterization of Suspect Fuel Rod Pieces from the 105 K West Basin

    SciTech Connect

    Delegard, Calvin H.; Schmidt, Andrew J.; Pool, Karl N.; Thornton, Brenda M.

    2006-09-15

    This report provides physical and radiochemical characterization results from examinations and laboratory analyses performed on ~0.55-inch diameter rod pieces found in the 105 K West (KW) Basin that were suspected to be from nuclear reactor fuel. The characterization results will be used to establish the technical basis for adding this material to the contents of one of the final Multi-Canister Overpacks (MCOs) that will be loaded out of the KW Basin in late FY2006 or at a later time depending on project priorities. Fifteen fuel rod pieces were found during the clean out of the KW Basin. Based on lack of specific credentials, documentation, or obvious serial numbers, none of the items could be positively identified nor could their sources or compositions be described. Item weights and dimensions measured in the KW Basin indicated densities consistent with the suspect fuel rods containing uranium dioxide (UO2), uranium metal, or being empty. Extensive review of the Hanford Site technical literature led to the postulation that these pieces likely were irradiated test fuel prepared to support of the development of the Hanford “New Production Reactor,” later called N Reactor. To obtain definitive data on the composition of the suspect fuel, 4 representative fuel rod pieces, with densities corresponding to oxide fuel were selected from the 15 items, and shipped from the KW Basin to the Pacific Northwest National Laboratory’s (PNNL) Radiological Processing Laboratory (RPL; also known at the 325 Building) for examinations and characterization. The three fuel rod that were characterized appear to contain slightly irradiated UO2 fuel, originally of natural enrichment, with zirconium cladding. The uranium-235 isotopic concentrations decreased by the irradiation and become slightly lower than the natural enrichment of 0.72% to range from 0.67 to 0.71 atom%. The plutonium concentrations, ranged from about 200 to 470 grams per metric ton of uranium and ranged in Plutonium

  3. CRITICALITY SAFETY CONTROL OF LEGACY FUEL FOUND AT 105-K WEST FUEL STORAGE BASIN

    SciTech Connect

    JENSEN, M.A.

    2005-08-19

    In August 2004, two sealed canisters containing spent nuclear fuel were opened for processing at the Hanford Site's K West fuel storage basin. The fuel was to be processed through cleaning and sorting stations, repackaged into special baskets, placed into a cask, and removed from the basin for further processing and eventual dry storage. The canisters were expected to contain fuel from the old Hanford C Reactor, a graphite-moderated reactor fueled by very low-enriched uranium metal. The expected fuel type was an aluminum-clad slug about eight inches in length and with a weight of about eight pounds. Instead of the expected fuel, the two canisters contained several pieces of thin tubes, some with wire wraps. The material was placed into unsealed canisters for storage and to await further evaluation. Videotapes and still photographs of the items were examined in consultation with available retired Hanford employees. It was determined that the items had a fair probability of being cut-up pieces of fuel rods from the retired Hanford Plutonium Recycle Test Reactor (PRTR). Because the items had been safely handled several times, it was apparent that a criticality safety hazard did not exist when handling the material by itself, but it was necessary to determine if a hazard existed when combining the material with other known types of spent nuclear fuel. Because the PRTR operated more than 40 years ago, investigators had to rely on a combination of researching archived documents, and utilizing common-sense estimates coupled with bounding assumptions, to determine that the fuel items could be handled safely with other spent nuclear fuel in the storage basin. As older DOE facilities across the nation are shut down and cleaned out, the potential for more discoveries of this nature is increasing. As in this case, it is likely that only incomplete records will exist and that it will be increasingly difficult to immediately characterize the nature of the suspect fissionable

  4. Sampling and analysis plan for sludge located in fuel storage canisters of the 105-K West basin

    SciTech Connect

    Baker, R.B.

    1997-04-30

    This Sampling and Analysis Plan (SAP) provides direction for the first sampling of sludge from the K West Basin spent fuel canisters. The specially developed sampling equipment removes representative samples of sludge while maintaining the radioactive sample underwater in the basin pool (equipment is described in WHC-SD-SNF-SDD-004). Included are the basic background logic for sample selection, the overall laboratory analyses required and the laboratory reporting required. These are based on requirements put forth in the data quality objectives (WHC-SD-SNF-DQO-012) established for this sampling and characterization activity.

  5. Review of ALARA plan for activities at the 105 K-East fuel storage basin

    SciTech Connect

    Vargo, G.J.; Durham, J.S.; Hickey, E.E.; Stansbury, P.S.; Cicotte, G.R.

    1994-09-01

    As part of its ongoing efforts to reduce doses to workers to levels as low as reasonably achievable (ALARA), Westinghouse Hanford Company (WHC) tasked the Health Protection Department of the Pacific Northwest Laboratory (PNL) to review operations at the 105 K-East Fuel Storage Basin (105 K-East). This review included both routine operations and a proposed campaign to encapsulate N-Reactor fuel stored there. This report summarizes the results of PNL`s reviews of policy, procedures, and practices for operations at 105 K-East as well as an evaluation of the major sources of occupational radiation exposures. Where possible, data previously collected by WHC and its predecessors were used. In addition, PNL staff developed a three-dimensional model of the radiological environment within 105 K-East to assess the relative contributions of different radiation sources to worker dose and to provide a decision tool for use in evaluating alternative methods of dose rate reduction. The model developed by PNL indicates that for most areas in the basin the primary source of occupational radiation exposure is the contaminated concrete surfaces of the basin near the waterline. Basin cooling water piping represents a significant source in a number of areas, particularly the Technical Viewing Pit. This report contains specific recommendations to reduce the impact of these sources of occupational radiation exposure in 105 K-East. Other recommendations to reduce doses to workers during activities such as filter changes and filter sampling are also included.

  6. 105-K Basin material design basis feed description for spent nuclear fuel project facilities

    SciTech Connect

    Praga, A.N.

    1998-01-08

    Revisions 0 and 0A of this document provided estimated chemical and radionuclide inventories of spent nuclear fuel and sludge currently stored within the Hanford Site`s 105-K Basins. This Revision (Rev. 1) incorporates the following changes into Revision 0A: (1) updates the tables to reflect: improved cross section data, a decision to use accountability data as the basis for total Pu, a corrected methodology for selection of the heat generation basis fee, and a revised decay date; (2) adds section 3.3.3.1 to expand the description of the approach used to calculate the inventory values and explain why that approach yields conservative results; (3) changes the pre-irradiation braze beryllium value.

  7. Acceptance testing report of Eductor System to be installed in the 105 K Basins

    SciTech Connect

    Packer, M.J.

    1996-04-25

    The Spent Nuclear Fuel (SNF) Project Engineering Support group cold-tested the Eductor System a 15 horsepower multi-stage centrifugal pump manufactured by the Grunfos Corporation with the housing manufactured and sold with the pump by the Tri-Nuclear Corporation and a 3-inch diameter water jet eductor manufactured by the Fox Valve Corporation. The Eductor System was tested to gather and document information to optimize sludge retrieval operations for use in the 105 K Basins. The cold-testing took place during February 12 through February 29, 1996 in the 305 Cold Test Facility basin located in the 300 area. The pump, utilized in conjunction with the eductor, makes up the core of the Eductor System. The pumping unit consists of a 15 hp stainless steel multi-stage centrifugal Grunfos pump which is seated in a stainless steel fabricated housing. Two baskets or filter elements make up part of the housing on the suction side of the pump. The pump can be used independent of the housing but the housing has two identified purposes. The first use is to stabilize the centrifugal pump and give the pneumatic valves and pump discharge piping a solid platform so the Eductor System can be more easily mobilized within the basin as one unit. The second use for the housing presents the option to utilize the suction-side filters for capturing larger fuel pieces after the smaller fines have been removed.

  8. DATA QUALITY OBJECTIVES SUMMARY REPORT FOR THE 105K EAST BASIN ION EXCHANGE COLUMN MONOLITH

    SciTech Connect

    JOCHEN, R.M.

    2007-02-07

    The 105-K East (KE) Basin Ion Exchange Column (IXC) cells, lead caves, and the surrounding vault are to be removed as necessary components in implementing ''Hanford Federal Facility Agreement and Consert Order'' (Ecology et al. 2003) milestone M-034-32 (Complete Removal of the K East Basin Structure). The IXCs consist of six units located in the KE Basin, three in operating positions in cells and three stored in a lead cave. Methods to remove the IXCs from the KE Basin were evaluated in KBC-28343, ''Disposal of K East Basin Ion Exchange Column Evaluation''. The method selected for removal was grouting of the six IXCs into a single monolith for disposal at the Environmental Restoration Disposal Facility (ERDF). Grout will be added to the IXC cells, IXC lead caves containing spent IXCs, and in the spaces between to immobilize the contaminants, provide self-shielding, minimize void space, and provide a structurally stable waste form. The waste to be offered for disposal is the encapsulated monolith defined by the exterior surfaces of the vault and the lower surface of the underlying slab. This document presents a summary of the data quality objective (DQO) process establishing the decisions and data required to support decision-making activities for disposition of the IXC monolith. The DQO process is completed in accordance with the seven-step planning process described in EPA QA/G-4, ''Guidance for the Data Quality Objectives Process'', which is used to clarify and study objectives; define the appropriate type, quantity, and quality of data; and support defensible decision-making. The DQO process involves the following steps: (1) state the problem; (2) identify the decision; (3) identify the inputs to the decision; (4) define the boundaries of the study; (5) develop a decision rule (DR); (6) specify tolerable limits on decision errors; and (7) optimize the design for obtaining data.

  9. 105-K Basin Material Design Basis Feed Description for Spent Nuclear Fuel (SNF) Project Facilities VOL 2 Sludge

    SciTech Connect

    PEARCE, K.L.

    2000-04-05

    Volume 2 provides estimated chemical and radionuclide inventories of sludge currently stored within the Hanford Site's 105-K Basin This volume also provides estimated chemical and radionuclide inventories for the sludge streams expected to be generated during Spent Nuclear Fuel (SNF) Project activities.

  10. Sampling and analysis plan for sludge located on the floor and in the pits of the 105-K basins

    SciTech Connect

    BAKER, R.B.

    1998-11-20

    This Sampling and Analysis Plan (SAP) provides direction for the sampling of the sludge found on the floor and in the remote pits of the 105-K Basins to provide: (1) basic data for the sludges that have not been characterized to-date and (2) representative Sludge material for process tests to be made by the SNF Project/K Basins sludge treatment process subproject. The sampling equipment developed will remove representative samples of the radioactive sludge from underwater at the K Basins, depositing them in shielded containers for transport to the Hanford Site laboratories. Included in the present document is the basic background logic for selection of the samples to meet the requirements established in the Data Quality Objectives (DQO), HNF-2033, for this sampling activity. The present document also includes the laboratory analyses, methods, procedures, and reporting that will be required to meet the DQO.

  11. Authorization Basis Safety Classification of Transfer Bay Bridge Crane at the 105-K Basins

    SciTech Connect

    CHAFFEE, G.A.

    2000-04-06

    This supporting document provides the bases for the safety classification for the K Basin transfer bay bridge crane and the bases for the Structures, Systems, and Components (SSC) safety classification. A table is presented that delineates the safety significant components. This safety classification is based on a review of the Authorization Basis (AB). This Authorization Basis review was performed regarding AB and design baseline issues. The primary issues are: (1) What is the AB for the safety classification of the transfer bay bridge crane? (2) What does the SSC safety classification ''Safety Significant'' or ''Safety Significant for Design Only'' mean for design requirements and quality requirements for procurement, installation and maintenance (including replacement of parts) activities for the crane during its expected life time? The AB information on the crane was identified based on review of Department of Energy--Richland Office (RL) and Spent Nuclear Fuel (SNF) Project correspondence, K Basin Safety Analysis Report (SAR) and RL Safety Evaluation Reports (SERs) of SNF Project SAR submittals. The relevant correspondence, actions and activities taken and substantive directions or conclusions of these documents are provided in Appendix A.

  12. 105-K Basin material design basis feed description for spent nuclear fuel project facilities. Volume 2: Sludge

    SciTech Connect

    Pearce, K.L.

    1998-08-30

    Volume 2 provides the design feed compositions for the baseline K East and K West Basin sludge process streams expected to be generated during Spent Nuclear Fuel (SNF) Project activities. Four types of feeds are required to support evaluation of specific facility and process considerations during the development of new facilities and processes. These four design feeds provide nominal and bounding conditions for design evaluations. Volume 2 includes definition of inventories for: (1) KE and KW Basins sludge locations (pit sludges, floor sludge, canister.sludge, and wash sludge components), (2) nominal feed for each of five process feed streams, (3) shielding design feed, (4) safety/regulatory assessment feed, and (5) criticality assessment feed.

  13. Sampling and analysis plan for sludge located in fuel storage canisters of the 105-K east basin

    SciTech Connect

    Baker, R.B., Westinghouse Hanford

    1996-05-20

    This Sampling and Analysis Plan (SAP) provides direction for the first sampling of sludge from the K East Basin spent fuel canisters. The specially developed sampling equipment used removes representative samples of sludge while maintaining the radioactive sample underwater in the basin pool (equipment is described in WHC-SD-SNF-SDD-004). Included are the basic background logic for sample selection, the overall laboratory analyses required and the laboratory reporting required. These are based on requirements put forth in the data quality objectives (WHC-SD-SNF-DQO-008) established for this sampling and characterization activity.

  14. Sampling and analysis plan for the consolidated sludge samples from the canisters and floor of the 105-K East basin

    SciTech Connect

    BAKER, R.B.

    1999-02-18

    This Sampling and Analysis Plan (SAP) provides direction for sampling of fuel canister and floor Sludge from the K East Basin to complete the inventory of samples needed for Sludge treatment process testing. Sample volumes and sources consider recent reviews made by the Sludge treatment subproject. The representative samples will be characterized to the extent needed for the material to be used effectively for testing. Sampling equipment used allows drawing of large volume sludge samples and consolidation of sample material from a number of basin locations into one container. Once filled, the containers will be placed in a cask and transported to Hanford laboratories for recovery and evaluation. Included in the present SAP are the logic for sample location selection, laboratory analysis procedures required, and reporting needed to meet the Data Quality Objectives (DQOs) for this initiative.

  15. Data compliation report: K West Basin fuel storage canister liquid samples

    SciTech Connect

    Trimble, D.J.

    1995-12-21

    Sample analysis data from the 222-S Laboratory are reported. The data are for liquid samples taken from spent fuel storage canisters in the 105 K West Basin during March 1995. An analysis and data report from the Special Analytical Studies group of Westinghouse Hanford Company regarding these samples is also included. Data analysis is not included herein.

  16. Conceptual Design Report Cask Loadout Sys and Cask Drop Redesign for the Immersion Pail Support Structure and Operator Interface Platform at 105 K West

    SciTech Connect

    LANGEVIN, A.S.

    1999-07-12

    This conceptual design report documents the redesign of the IPSS and the OIP in the 105 KW Basin south loadout pit due to a postulated cask drop accident, as part of Project A.5/A.6, Canister Transfer Facility Modifications. Project A.5/A.6 involves facility modifications needed to transfer fuel from the basin into the cask-MCO. The function of the IPSS is to suspend, guide, and position the immersion pail. The immersion pail protects the cask-MCO from contamination by basin water and acts as a lifting device for the cask-MCO. The OIP provides operator access to the south loadout pit. Previous analyses studied the effects of a cask-MCO drop on the south loadout pit concrete structure and on the IPSS. The most recent analysis considered the resulting loads at the pit slab/wall joint (Kanjilal, 1999). This area had not been modeled previously, and the analysis results indicate that the demand capacity exceeds the allowable at the slab/wall joint. The energy induced on the south loadout pit must be limited such that the safety class function of the basin is maintained. The solution presented in this CDR redesigns the IPSS and the OIP to include impact-absorbing features that will reduce the induced energy. The impact absorbing features of the new design include: Impact-absorbing material at the IPSS base and at the upper portion of the IPSS legs. A sleeve which provides a hydraulic means of absorbing energy. Designing the OIP to act as an impact absorber. The existing IPSS structure in 105 KW will be removed. This conceptual design considers only loads resulting from drops directly over the IPSS and south loadout pit area. Drops in other areas of the basin are not considered, and will be covered as part of a future revision to this CDR.

  17. K Basins isolation barriers summary report

    SciTech Connect

    Strickland, G.C., Westinghouse Hanford

    1996-07-31

    The 105-K East and 105-K West fuel storage basins (105-K Basins) were designed and constructed in the early 1950`s for interim storage of irradiated fuel following its discharge from the reactors. The 105-K- East and 105-K West reactor buildings were constructed first, and the associated storage basins were added about a year later. The construction joint between each reactor building structure and the basin structure included a flexible membrane waterstop to prevent leakage. Water in the storage basins provided both radiation shielding and cooling to remove decay heat from stored fuel until its transfer to the Plutonium Uranium Extraction (PUREX) Facility for chemical processing. The 105-K West Reactor was permanently shut down in February 1970; the 105-K East Reactor was permanently shut down in February 1971. Except for a few loose pieces, fuel stored in the basins at that time was shipped to the PUREX Facility for processing. The basins were then left idle but were kept filled with water. The PUREX Facility was shut down and placed on wet standby in 1972 while N Reactor continued to operate. When the N Reactor fuel storage basin began to approach storage capacity, the decision was made to modify the fuel storage basins at 105-K East and 105-K West to provide additional storage capacity. Both basins were subsequently modified (105-K East in 1975 and 105-K West in 1981) to provide for the interim handling and storage of irradiated N Reactor fuel. The PUREX Facility was restarted in November 1983 to provide 1698 additional weapons-grade plutonium for the United States defense mission. The facility was shut down and deactivated in December 1992 when the U.S. Department of Energy (DOE) determined that the plant was no longer needed to support weapons-grade plutonium production. When the PUREX Facility was shut down, approximately 2.1 x 1 06 kg (2,100 metric tons) of irradiated fuel aged 7 to 23 years was left in storage in the 105-K Basins pending a decision on

  18. Test plan for techniques to measure and remove coatings from K West Basin fuel elements

    SciTech Connect

    Bridges, A.E.

    1998-06-17

    Several types of coatings have previously been visually identified on the surface of 105-K East and 105-K West Basins fuel elements. One type of coating (found only in K West Basin) in particular was found to be a thick translucent material that was often seen to be dislodged from the elements as flakes when the elements were handled during visual examinations (Pitner 1997). Subsequently it was determined (for one element only in a hot cell) that this material, in the dry condition, could easily be removed from the element using a scraping tool. The coating was identified as Al(OH){sub 3} through X-ray diffraction (XRD) analyses and to be approximately 60 {micro}m thick via scanning electron microscopy (SEM). However, brushing under water in the basin using numerous mechanical strokes failed to satisfactorily remove these coatings in their thickest form as judged by appearance. Such brushing was done with only one type of metal brush, a brush design previously found satisfactory for removing UO{sub 4}.xH{sub 2}O coatings from the elements.

  19. 41. West end of McHugh Basin, looking west toward Dingle ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    41. West end of McHugh Basin, looking west toward Dingle Basin. Photo by Brian C. Morris, PUget Power, 1989. - Puget Sound Power & Light Company, White River Hydroelectric Project, 600 North River Avenue, Dieringer, Pierce County, WA

  20. Polyphase deformation in Marathon basin, west Texas

    SciTech Connect

    Sims, D.; Morris, A.

    1989-03-01

    Marathon basin, Texas, is the westernmost window into the Ouachita orogene. Interpreted as a result of northwest-southeast compression, intermittent orogenic pulses began in the Mississippian and continued into the Early Permian (Wolfcampian). However, the northeastern portion of the basin contains structures that could not have resulted from a single compression orientation and indicate that deformation continued to affect Wolfcampian and Leonardian rocks. Their work confirms the protracted nature of upper Paleozoic deformation and indicates that late- and postorogenic events were not related to the northwest-southeast compression manifest throughout the Marathon basin. The northeastern part of the basin exposes Morrowan( )-Desmoinesian rocks. The authors recognize a duplex thrust system, traceable for 10 km, rooted in the uppermost Morrowan( ) Tesnus Formation and creating a double thickness of (Morrowan-Atokan) Dimple Limestone. The duplex is folded by 50 to 2000-m half-wavelength northwestverging folds which plunge gently southwestward. Dimple thickness is further increased by a large number of contraction faults, each with up to 2 m of stratigraphic throw. Superimposed upon these structures are southeast-plunging, 10-20-m half-wavelength open kinks with vergence sympathetic with the regional trend variation apparent in this part of the basin. The superimposed structures are the result of a northeast-southwest compressive event. North of the Ouachita exposure, rocks containing lower Leonardian fusulinids are deformed into gentle east-west-trending 500-m half-wavelength folds which are likely the result of another distinct compression orientation trending north-south. Pervasive east-west extension in all Pennsylvania-age rocks is indicated by subvertical, calcite-filled veins.

  1. View west of reserve basin of submarine trout and frigate ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    View west of reserve basin of submarine trout and frigate Edward E. McDonnell - Naval Base Philadelphia-Philadelphia Naval Shipyard, Reserve Basin & Marine Railway, League Island, Philadelphia, Philadelphia County, PA

  2. TECHNOLOGY DEVELOPMENT AND DEPLOYMENT OF SYSTEMS FOR THE RETRIEVAL AND PROCESSING OF REMOTE-HANDLED SLUDGE FROM HANFORD K-WEST FUEL STORAGE BASIN

    SciTech Connect

    RAYMOND RE

    2011-12-27

    In 2011, significant progress was made in developing and deploying technologies to remove, transport, and interim store remote-handled sludge from the 105-K West Fuel Storage Basin on the Hanford Site in south-central Washington State. The sludge in the 105-K West Basin is an accumulation of degraded spent nuclear fuel and other debris that collected during long-term underwater storage of the spent fuel. In 2010, an innovative, remotely operated retrieval system was used to successfully retrieve over 99.7% of the radioactive sludge from 10 submerged temporary storage containers in the K West Basin. In 2011, a full-scale prototype facility was completed for use in technology development, design qualification testing, and operator training on systems used to retrieve, transport, and store highly radioactive K Basin sludge. In this facility, three separate systems for characterizing, retrieving, pretreating, and processing remote-handled sludge were developed. Two of these systems were successfully deployed in 2011. One of these systems was used to pretreat knockout pot sludge as part of the 105-K West Basin cleanup. Knockout pot sludge contains pieces of degraded uranium fuel ranging in size from 600 {mu}m to 6350 {mu}m mixed with pieces of inert material, such as aluminum wire and graphite, in the same size range. The 2011 pretreatment campaign successfully removed most of the inert material from the sludge stream and significantly reduced the remaining volume of knockout pot product material. Removing the inert material significantly minimized the waste stream and reduced costs by reducing the number of transportation and storage containers. Removing the inert material also improved worker safety by reducing the number of remote-handled shipments. Also in 2011, technology development and final design were completed on the system to remove knockout pot material from the basin and transport the material to an onsite facility for interim storage. This system is

  3. CONSTRUCTION PROGRESS PHOTO SHOWING WEST STORAGE BASIN AT FUEL STORAGE ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    CONSTRUCTION PROGRESS PHOTO SHOWING WEST STORAGE BASIN AT FUEL STORAGE BUILDING (CPP-603). INL PHOTO NUMBER NRTS-51-689. Unknown Photographer, 1950 - Idaho National Engineering Laboratory, Idaho Chemical Processing Plant, Fuel Reprocessing Complex, Scoville, Butte County, ID

  4. 1. LOOKING TOWARD PLANE 9 WEST. BASIN HAS BEEN DRAINED ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    1. LOOKING TOWARD PLANE 9 WEST. BASIN HAS BEEN DRAINED AND SLOPE OF PLANE 9 IS VISIBLE BETWEEN ROW OF TREES IN BACKGROUND. STONEWORK ON LEFT IS ABUTMENT TO BRIDGE THAT CROSSED OVER THE CANAL. - Morris Canal, Inclined Plane 9 West, Port Warren, Warren County, NJ

  5. Vertical plate motions in the West Siberian Basin

    NASA Astrophysics Data System (ADS)

    Vibe, Yulia

    2014-05-01

    The West Siberian Basin is a sedimentary basin situated between the Ural Mountains and the Siberian Craton. The Basin has experienced several periods of subsidence and uplift since the arrival of the Siberian Traps c. 250 Ma. Although the Basin is extensively explored and hosts large reserves of Oil and Gas, the forces driving the vertical motions are poorly understood. In this work we attempt to analyse the amount, timing and location of subsidence and uplift in the Basin to shed light on the possible causes of these motions. A detailed description of sedimentary layers is published in a number of Soviet-era books and articles and serves as a basis for our research. This data is first converted into sediment grids through time. Subsequently, the sediments, the sediment load and the compaction are taken into account ('backstripping') to produce the depth of the Basin at respective time steps. With this technique we calculate the tectonic component of subsidence. Uncertainties related to uplift events are estimated by the unconformities in the stratigraphic charts. One of the possible driving forces of vertical motions is a change of force balance arising at plate boundaries. Since active plate tectonics have been absent from West Siberia since the formation of the Urengoy and Khodosey Rifts, c. 250Ma, we study the far-field tectonic effects as a potential driving mechanism. Indeed, some of the significant vertical events in the West Siberian Basin coincide with the major tectonic events around Siberia. An example is the spreading in the Arctic (Eurasian Basin) in the Eocene (56 Ma) which was synchronous with initiation of uplift events in the northern part of West Siberia. In the middle Oligocene (33 Ma), the northern and eastern parts of the basin were subjected to uplift as subsidence migrated southwards and the Basin rose above the sea level. This was coincident with the changes of plate motions in the northern North Atlantic and Indo-European collision.

  6. Geology and petroleum resources of West Siberian Basin, USSR

    SciTech Connect

    Clarke, J.W.; Klemme, H.D.; Peterson, J.A.

    1986-05-01

    The West Siberian basin occupies an area of approximately 3.3 million km/sup 2/ (1.3 million mi/sup 2/) in northwestern Siberia east of the Ural Mountains. Thickness of the Phanerozoic sedimentary cover ranges from approximately 3-5 km (10,000-15,000 ft) in the central area of the basin, to 8-12 km (25,000-40,000 ft) in the northern part. The basin is filled with approximately 10 million km/sup 3/ (2.4 million mi/sup 3/) of Mesozoic-Cenozoic clastic sedimentary rocks ranging in thickness from 3-4 km (10,000-13,000 ft) in the central area to 6-9 km (20,000-30,000 ft) in the north. The basement in the basin is Precambrian and Precambrian-Paleozoic granitic rocks and in places is highly metamorphosed Paleozoic sedimentary rocks. In other parts of the basin, Paleozoic carbonate and clastic rocks are only lightly metamorphosed and are targets for petroleum exploration. The Mesozoic-Cenozoic sedimentary basin fill was initiated in the northern part of the basin during the Triassic. By the Late Jurassic, marine clastic deposition had spread throughout the basin, and the basin configuration was established for the remainder of geologic time. Cretaceous and lower Tertiary rocks are primarily shallow marine shelf, coastal plain, and lowland clastic deposits formed during several transgressive-regressive phases. Major oil accumulations, mainly in Lower Cretaceous and Jurassic sandstone reservoirs, are located in the central and west-central parts of the basin. The largest reserves of natural gas in the world are located in the northern part of the basin, primarily in Upper Cretaceous (Cenomanian) sandstone reservoirs. In 1982, estimated cumulative production from the basin was approximately 10 billion bbl of oil. Estimated mean undiscovered resources (1981) are approximately 80 billion bbl of oil and 700 tcf of gas.

  7. 40. View west of Wickersham Basin in vicinity of McHugh ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    40. View west of Wickersham Basin in vicinity of McHugh Basin, looking west. Photo by Brian C. Morris, Puget Power, 1989. - Puget Sound Power & Light Company, White River Hydroelectric Project, 600 North River Avenue, Dieringer, Pierce County, WA

  8. Oil and Gas Resources of the West Siberian Basin, Russia

    EIA Publications

    1997-01-01

    Provides an assessment of the oil and gas potential of the West Siberian Basin of Russia. The report was prepared in cooperation with the U. S. Geological Survey (USGS) and is part of the Energy Information Administration's (EIA) Foreign Energy Supply Assessment Program (FESAP).

  9. Successful Deployment of System for the Storage and Retrieval of Spent/Used Nuclear Fuel from Hanford K-West Fuel Storage Basin-13051

    SciTech Connect

    Quintero, Roger; Smith, Sahid; Blackford, Leonard Ty; Johnson, Mike W.; Raymond, Richard; Sullivan, Neal; Sloughter, Jim

    2013-07-01

    In 2012, a system was deployed to remove, transport, and interim store chemically reactive and highly radioactive sludge material from the Hanford Site's 105-K West Fuel Storage Basin that will be managed as spent/used nuclear fuel. The Knockout Pot (KOP) sludge in the 105-K West Basin was a legacy issue resulting from the spent nuclear fuel (SNF) washing process applied to 2200 metric tons of highly degraded fuel elements following long-term underwater storage. The washing process removed uranium metal and other non-uranium constituents that could pass through a screen with 0.25-inch openings; larger pieces are, by definition, SNF or fuel scrap. When originally retrieved, KOP sludge contained pieces of degraded uranium fuel ranging from 600 microns (μm) to 6350 μm mixed with inert material such as aluminum hydroxide, aluminum wire, and graphite in the same size range. In 2011, a system was developed, tested, successfully deployed and operated to pre-treat KOP sludge as part of 105-K West Basin cleanup. The pretreatment process successfully removed the vast majority of inert material from the KOP sludge stream and reduced the remaining volume of material by approximately 65 percent, down to approximately 50 liters of material requiring management as used fuel. The removal of inert material resulted in significant waste minimization and project cost savings because of the reduced number of transportation/storage containers and improvement in worker safety. The improvement in worker safety is a result of shorter operating times and reduced number of remote handled shipments to the site fuel storage facility. Additionally in 2011, technology development, final design, and cold testing was completed on the system to be used in processing and packaging the remaining KOP material for removal from the basin in much the same manner spent fuel was removed. This system was deployed and successfully operated from June through September 2012, to remove and package the last

  10. Analysis of Ignition Testing on K-West Basin Fuel

    SciTech Connect

    J. Abrefah; F.H. Huang; W.M. Gerry; W.J. Gray; S.C. Marschman; T.A. Thornton

    1999-08-10

    Approximately 2100 metric tons of spent nuclear fuel (SNF) discharged from the N-Reactor have been stored underwater at the K-Basins in the 100 Area of the Hanford Site. The spent fuel has been stored in the K-East Basin since 1975 and in the K-West Basin since 1981. Some of the SNF elements in these basins have corroded because of various breaches in the Zircaloy cladding that occurred during fuel discharge operations and/or subsequent handling and storage in the basins. Consequently, radioactive material in the fuel has been released into the basin water, and water has leaked from the K-East Basin into the soil below. To protect the Columbia River, which is only 380 m from the basins, the SNF is scheduled to be removed and transported for interim dry storage in the 200 East Area, in the central portion of the Site. However, before being shipped, the corroded fuel elements will be loaded into Multi-Canister OverPacks and conditioned. The conditioning process will be selected based on the Integrated Process Strategy (IPS) (WHC 1995), which was prepared on the basis of the dry storage concept developed by the Independent Technical Assessment (ITA) team (ITA 1994).

  11. Oil and gas resources in the West Siberian Basin, Russia

    SciTech Connect

    1997-12-01

    The primary objective of this study is to assess the oil and gas potential of the West Siberian Basin of Russia. The study does not analyze the costs or technology necessary to achieve the estimates of the ultimate recoverable oil and gas. This study uses reservoir data to estimate recoverable oil and gas quantities which were aggregated to the field level. Field totals were summed to a basin total for discovered fields. An estimate of undiscovered oil and gas, from work of the US Geological Survey (USGS), was added to give a total basin resource volume. Recent production decline points out Russia`s need to continue development of its discovered recoverable oil and gas. Continued exploration is required to discover additional oil and gas that remains undiscovered in the basin.

  12. Petroleum geology and resources of the West Siberian Basin, Russia

    USGS Publications Warehouse

    Ulmishek, Gregory F.

    2003-01-01

    The West Siberian basin is the largest petroleum basin in the world covering an area of about 2.2 million km2. The basin occupies a swampy plain between the Ural Mountains and the Yenisey River. On the north, the basin extends offshore into the southern Kara Sea. On the west, north, and east, the basin is surrounded by the Ural, Yenisey Ridge, and Turukhan-Igarka foldbelts that experienced major deformations during the Hercynian tectonic event and the Novaya Zemlya foldbelt that was deformed in early Cimmerian (Triassic) time. On the south, the folded Caledonian structures of the Central Kazakhstan and Altay-Sayan regions dip northward beneath the basin?s sedimentary cover. The basin is a relatively undeformed Mesozoic sag that overlies the Hercynian accreted terrane and the Early Triassic rift system. The basement is composed of foldbelts that were deformed in Late Carboniferous?Permian time during collision of the Siberian and Kazakhstan continents with the Russian craton. The basement also includes several microcontinental blocks with a relatively undeformed Paleozoic sedimentary sequence. The sedimentary succession of the basin is composed of Middle Triassic through Tertiary clastic rocks. The lower part of this succession is present only in the northern part of the basin; southward, progressively younger strata onlap the basement, so that in the southern areas the basement is overlain by Toarcian and younger rocks. The important stage in tectono-stratigraphic development of the basin was formation of a deep-water sea in Volgian?early Berriasian time. The sea covered more than one million km2 in the central basin area. Highly organic-rich siliceous shales of the Bazhenov Formation were deposited during this time in anoxic conditions on the sea bottom. Rocks of this formation have generated more than 80 percent of West Siberian oil reserves and probably a substantial part of its gas reserves. The deep-water basin was filled by prograding clastic clinoforms

  13. Tectonosedimentary history of the sedimentary basins in northern west Siberia

    SciTech Connect

    Kunin, N.Ya.; Segalovich, I.E. )

    1993-09-01

    Sedimentary basins of northern west Siberia belong to the Arctic tectonosedimentary province. This basin evolved dissimilarly compared to those in the Urengoy and more southern areas, which resulted in substantial differences in the geologic characteristics. Seismic surveys indicate that the basement surface in northern west Siberia occurs at great depths, in places exceeding 15 km. The depressions of the basement surfaces are filled with the thick Paleozoic and Mesozoic sequences. The paper discussed the results of seismostratigraphic analysis of more than 13,000 km of regional common-depth-point profiles. These profiles identified systems of east-west-trending and isometric structures in the region. Some of the structures are buried; others are mapped in the upper horizons of the sedimentary cover and decrease in magnitude with depth. Cretaceous marine sediments that were deposited under deep-water conditions and did not compensate for the tectonic subsidence are widely present in the region. Noncompensated sedimentation was the longest from the Late Jurassic to the Hauterivian-Barremian on the Gydan peninsula and in adjacent areas. The Jurassic section is dominate by ingressive marine sediments. Sediments that did not compensate for tectonic subsidence widely occurred in the Early Jurassic and resulted in deposition of petroleum source rocks. Triassic and Jurassic strata occur conformable in most of northern west Siberia. Significant deformation of the Triassic sediments are identified in the periphery of the Triassic marine basin. This indicates that surrounding structures were thrust against northern west Siberia at the Triassic and Jurassic time boundary. Isometric structures of high magnitude were formed during the Paleozoic structure stage and these structures continued to grow through the Triassic and Jurassic. These and other results of seismostratigraphic analysis suggest the high oil potential of the region.

  14. The stratigraphy of the Taoudeni basin, west Africa

    SciTech Connect

    Ratcliffe, K.T.; Moody, R.T.J. )

    1993-09-01

    The Taoudeni basin is one of the major structural units of the west African craton, with an areal extent in excess of 2,000,000 km[sup 2]. Sediment thicknesses can reach over 3000 m, but have an average thickness of 1250 m. The majority of the basin-fill sediments are Precambrian to Carboniferous, with Mesozoic rocks present in the eastern margin adjacent to the Adrar des Iforas. Due to the paucity of exploration in the Taoudoni basin, there are no detailed works on source potential, maturity, or reservoir quality. However, within the sediment pile, there are excellent potential reservoirs, in the form of poorly cemented sandstones, and apparently organic-rich sediments, which may have source potential. Three major Paleozoic tectono-sedimentary units are recognized within the basin, all of which are found in the Adrar de Mauritania, which is taken as the [open quotes]type section[close quotes] for the Taoudeni basin. Unit 1 (Upper Riphean) is composed of alternating sandstones, limestones, and mudstones, which show rapid lateral thickness variations. Units 2 and 3 are far more uniform in thickness and distribution. Unit 2 (late Precambrian-Lower Ordovician) is composed of shales and sandstones with minor limestones. The base of this unit is composed of the Triad, or the Eocambrian glacial deposits that can be correlated across west Africa. Unit 3 (Upper Oedovician-Devonian) is composed of a variety of lithofacies varying from a basal glacial unit through basinal graptolitic shales into shallow marine/continental deposits. Each of these units will be discussed in detail and the petroleum potential of the constituent lithofacies considered.

  15. DATA QUALITY OBJECTIVE SUMMARY REPORT FOR THE 105 K EAST ION EXCHANGE COLUMN MONOLITH

    SciTech Connect

    JOCHEN, R.M.

    2007-08-02

    The 105-K East (KE) Basin Ion Exchange Column (IXC) cells, lead caves, and the surrounding vault are to be removed as necessary components in implementing ''Hanford Federal Facility Agreement and Consent Order'' (Ecology et al. 2003) milestone M-034-32 (Complete Removal of the K East Basin Structure). The IXCs consist of six units located in the KE Basin, three in operating positions in cells and three stored in a lead cave. Methods to remove the IXCs from the KE Basin were evaluated in KBC-28343, ''Disposal of K East Basin Ion Exchange Column Evaluation''. The method selected for removal was grouting the six IXCs into a single monolith for disposal at the Environmental Restoration Disposal Facility (ERDF). Grout will be added to the IXC cells, IXC lead caves containing spent IXCs, and in the spaces between the lead cave walls and metal skin, to immobilize the contaminants, provide self-shielding, minimize void space, and provide a structurally stable waste form. The waste to be offered for disposal is the encapsulated monolith defined by the exterior surfaces of the vault and the lower surface of the underlying slab. This document presents summary of the data quality objective (DQO) process establishing the decisions and data required to support decision-making activities for the disposition of the IXC monolith. The DQO process is completed in accordance with the seven-step planning process described in EPA QA/G-4, ''Guidance for the Data Quality Objectives Process'', which is used to clarify and study objectives; define the appropriate type, quantity, and quality of data; and support defensible decision-making. The DQO process involves the following steps: (1) state the problem; (2) identify the decision; (3) identify the inputs to the decision; (4) define the boundaries of the study; (5) develop a decision rule (DR); (6) specify tolerable limits on decision errors; and (7) optimize the design for obtaining data.

  16. Gravity-driven structures and rift basin evolution: Rio Muni Basin, offshore equatorial West Africa

    SciTech Connect

    Turner, J.P.

    1995-08-01

    Offshore Equatorial Guinea, west Africa, gravity-driven nappes, more than 1 km thick and 15 km from head to toe, provide key evidence in reconstructing the late synrift: evolution of this part of the South Atlantic margin basin system. Furthermore, Aptian-Cenomanian carbonate and clastic rocks in the nappes` allochthonous hanging walls are attracting interest as a new exploration play in west Africa. The nappes exhibit a range of geometries that suggest they share many of the same deformation processes as thin-skin thrust and linked extensional fault systems. Not only are these structures significant in their own right, representing a rare example of gravity tectonics in the virtual absence of major halokinesis, but their presence may record an other-wise undetectable process active during the transition from a rift basin to a passive continental margin. A review of Equatorial Guinea in its pre-Atlantic configuration, alongside neighboring basins in Brazil (the Sergipe-Alagoas basin) and Gabon, suggests that gravity gliding was sustained by a relatively steep, westward paleoslope promoted by east-ward offset of the locus of thermal uplift from the rift basin (i.e., a simple shear model of basin formation). In contrast to gravity-driven structures in most postrift settings, the Equatorial Guinea nappes developed at the close of the Aptian-Albian synrift episode in response to a growing bathymetric deep caused by rapid subsidence outpacing restricted sedimentation.

  17. SLUDGE RETRIEVAL FROM HANFORD K WEST BASIN SETTLER TANKS

    SciTech Connect

    ERPENBECK EG; LESHIKAR GA

    2011-01-13

    In 2010, an innovative, remotely operated retrieval system was deployed to successfully retrieve over 99.7% of the radioactive sludge from ten submerged tanks in Hanford's K-West Basin. As part of K-West Basin cleanup, the accumulated sludge needed to be removed from the 0.5 meter diameter by 5 meter long settler tanks and transferred approximately 45 meters to an underwater container for sampling and waste treatment. The abrasive, dense, non-homogeneous sludge was the product of the washing process of corroded nuclear fuel. It consists of small (less than 600 micron) particles of uranium metal, uranium oxide, and various other constituents, potentially agglomerated or cohesive after 10 years of storage. The Settler Tank Retrieval System (STRS) was developed to access, mobilize and pump out the sludge from each tank using a standardized process of retrieval head insertion, periodic high pressure water spray, retraction, and continuous pumping of the sludge. Blind operations were guided by monitoring flow rate, radiation levels in the sludge stream, and solids concentration. The technology developed and employed in the STRS can potentially be adapted to similar problematic waste tanks or pipes that must be remotely accessed to achieve mobilization and retrieval of the sludge within.

  18. 33 CFR 165.777 - Security Zone; West Basin, Port Canaveral Harbor, Cape Canaveral, Florida.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... arrival of a cruise ship at the West Basin of Port Canaveral Harbor during MARSEC Levels 2 and 3 or when... will not be deactivated until the departure of all cruise ships from the West Basin. The zone is... security zone is activated by the display of a red ball on a 50-foot pole located at the east end of...

  19. 33 CFR 165.777 - Security Zone; West Basin, Port Canaveral Harbor, Cape Canaveral, Florida.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... arrival of a cruise ship at the West Basin of Port Canaveral Harbor during MARSEC Levels 2 and 3 or when... will not be deactivated until the departure of all cruise ships from the West Basin. The zone is... security zone is activated by the display of a red ball on a 50-foot pole located at the east end of...

  20. 33 CFR 165.777 - Security Zone; West Basin, Port Canaveral Harbor, Cape Canaveral, Florida.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... arrival of a cruise ship at the West Basin of Port Canaveral Harbor during MARSEC Levels 2 and 3 or when... will not be deactivated until the departure of all cruise ships from the West Basin. The zone is... security zone is activated by the display of a red ball on a 50-foot pole located at the east end of...

  1. 33 CFR 165.777 - Security Zone; West Basin, Port Canaveral Harbor, Cape Canaveral, Florida.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... arrival of a cruise ship at the West Basin of Port Canaveral Harbor during MARSEC Levels 2 and 3 or when... will not be deactivated until the departure of all cruise ships from the West Basin. The zone is... security zone is activated by the display of a red ball on a 50-foot pole located at the east end of...

  2. 33 CFR 165.777 - Security Zone; West Basin, Port Canaveral Harbor, Cape Canaveral, Florida.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... arrival of a cruise ship at the West Basin of Port Canaveral Harbor during MARSEC Levels 2 and 3 or when... will not be deactivated until the departure of all cruise ships from the West Basin. The zone is... security zone is activated by the display of a red ball on a 50-foot pole located at the east end of...

  3. Reserve Growth in Oil Fields of West Siberian Basin, Russia

    USGS Publications Warehouse

    Verma, Mahendra K.; Ulmishek, Gregory F.

    2006-01-01

    Although reserve (or field) growth has proven to be an important factor contributing to new reserves in mature petroleum basins, it is still a poorly understood phenomenon. Limited studies show that the magnitude of reserve growth is controlled by several major factors, including (1) the reserve booking and reporting requirements in each country, (2) improvements in reservoir characterization and simulation, (3) application of enhanced oil recovery techniques, and (4) the discovery of new and extensions of known pools in discovered fields. Various combinations of these factors can affect the estimates of proven reserves in particular fields and may dictate repeated estimations of reserves during a field's life. This study explores the reserve growth in the 42 largest oil fields in the West Siberian Basin, which contain about 55 percent of the basin's total oil reserves. The West Siberian Basin occupies a vast swampy plain between the Ural Mountains and the Yenisey River, and extends offshore into the Kara Sea; it is the richest petroleum province in Russia. About 600 oil and gas fields with original reserves of 144 billion barrels of oil (BBO) and more than 1,200 trillion cubic feet of gas (TCFG) have been discovered. The principal oil reserves and most of the oil fields are in the southern half of the basin, whereas the northern half contains mainly gas reserves. Sedimentary strata in the basin consist of Upper Triassic through Tertiary clastic rocks. Most oil is produced from Neocomian (Lower Cretaceous) marine to deltaic sandstone reservoirs, although substantial oil reserves are also in the marine Upper Jurassic and continental to paralic Lower to Middle Jurassic sequences. The majority of oil fields are in structural traps, which are gentle, platform-type anticlines with closures ranging from several tens of meters to as much as 150 meters (490 feet). Fields producing from stratigraphic traps are generally smaller except for the giant Talin field which

  4. Seismic Stratigraphy of the Ross Island Flexural Basin, West Antarctica

    NASA Astrophysics Data System (ADS)

    Wenman, C. P.; Harry, D. L.; Jha, S.

    2014-12-01

    Marine seismic reflection data collected over the past 30+ years in the Ross Sea region of southwest Antarctica has been tied to the ANDRILL and CIROS boreholes to develop a seismic stratigraphic model that constrains the spatial and temporal evolution of the flexural basin surrounding Ross Island. Ross Island was formed from 4.6 Ma to present by extrusive volcanism in the Ross Sea at the southern end of the Terror Rift. Preliminary mapping has identified a hinge zone trending northeastward from Mt. Bird, separating the well-developed flexural moat on the west side of the island from sub-horizontal strata on the northeast and east sides. The flexural moat on the west and north-northwest sides of the island is approximately 40-45 km wide with sediment fill thickness of roughly 1100 m. Seismic lines to the east and northeast of the island do not indicate the presence of a flexural moat. Instead, the thickness of strata on the east side of the island that are time-equivalent to the infill of the flexural moat on the west side remains constant from the Coulman High westward to within ~28 km of Ross Island (the landward extent of the seismic data coverage). The concordant post-Miocene strata on the east and northeast sides of Ross Island imply either that the flexural basin does not extend more than ~28 km eastward from the Ross Island shoreline, or that the flexural basin is not present on that side of the island. The first scenario requires that the elastic strength of the lithosphere differ on either side of the hinge. The second scenario can be explained by a mechanical rupture in the lithosphere beneath Ross Island, with Ross Island acting as an end-load on a mechanical half-plate that forms the lithosphere beneath Ross Island and westward. In this model, the lithosphere east of Ross Island and the hinge forms a second half-plate, bearing little or none of the Ross Island volcanic load.

  5. K West Basin Sand Filter Backwash Sample Analysis

    SciTech Connect

    Fiskum, Sandra K.; Smoot, Margaret R.; Coffey, Deborah S.; Pool, Karl N.

    2016-03-01

    A sand filter is used to help maintain water clarity at the K West Basin where highly radioactive sludge is stored. Eventually that sand filter will require disposal. The radionuclide content of the solids trapped in the sand filter will affect the selection of the sand filter disposal pathway. The Pacific Northwest National Laboratory (PNNL) was contracted by the K Basin Operations & Plateau Remediation Project (operations contractor CH2M Hill) to analyze the radionuclide content of the solids collected from the backwash of the K West Basin sand filter. The radionuclide composition in the sand filter backwash solids will be used by CH2M Hill to determine if the sand filter media and retained sludge solids will be designated as transuranic waste for disposal purposes or can be processed through less expensive means. On October 19, 2015, K Basin Operations & Plateau Remediation Project staff backwashed the sand filter into the North Load-Out Pit (NLOP) and immediately collected sample slurry from a sampling tube positioned 24 in. above the NLOP floor. The 764 g sand filter backwash slurry sample, KW-105 SFBW-001, was submitted to PNNL for analysis on October 20, 2015. Solids from the slurry sample were consolidated into two samples (i.e., a primary and a duplicate sample) by centrifuging and measured for mass (0.82 g combined – wet centrifuged solids basis) and volume (0.80 mL combined). The solids were a dark brown/orange color, consistent with iron oxide/hydroxide. The solids were dried; the combined dry solids mass was 0.1113 g, corresponding to 0.0146 weight percent (wt%) solids in the original submitted sample slurry. The solids were acid-digested using nitric and hydrochloric acids. Insoluble solids developed upon dilution with 0.5 M HNO3, corresponding to an average 6.5 wt% of the initial dry solids content. The acid digestate and insoluble solids were analyzed separately by gamma spectrometry. Nominally, 7.7% of the 60Co was present

  6. Exploration in the Ombilin Intermontane Basin, West Sumatra

    SciTech Connect

    Koning, T.

    1996-12-31

    The Ombilin Basin is a Tertiary intermontane basin located within the Barisan Mountain Range of Sumatra. Oil exploration commenced in the Ombilin Basin in the early 1980s when geological mapping was carried out, a synthetic aperture radar survey was flown, and a basin-wide geophysical survey was completed. This effort led to the drilling of Sinimar No. 1 to a total depth 3020 m. Sinimar No. 1 was a historic well in Indonesia`s oil industry since it was the first oil exploration well drilled in the Ombilin Basin and also the first well drilled in an intermontane basin in Indonesia. Oil, gas and condensate was tested in the well. An integrated interpretation of the well, geophysical and outcrop data indicates that despite its small areal size (30 km x 50 km), the Ombilin Basin is a deep pull-apart basin containing up to 4500 m of Tertiary sediments, ranging in age from Middle Eocene to Early Miocene. The basin currently is in an intermontane basin structural setting but it was also an intermontane basin during its Early Tertiary depositional history. During the Eocene, alluvial fans and massive debris flows were deposited on the basin margins and a large lake occupied the basin center. Fluvial deposition occurred in the basin during the Oligocene followed by deposition of marine shales, sandstones, and isolated reefs during the Miocene. Although the Ombilin Basin is located within Sumatra`s magmatic arc and is partially covered by volcanics from extinct and active volcanoes, the subsurface temperature gradients of 1.62 deg. F/100 ft. recorded in Sinimar No. I and 1.47 deg F/100 ft. measured in a deep (670 m) coal exploration core hole are significantly cooler than the average subsurface temperature gradients in the Sumatra back-arc basins. Organic-rich Eocene lacustrine shales are the likely source rocks for the hydrocarbons tested in Sinimar No. 1 and the oil seeps located along the basin margins.

  7. Exploration in the Ombilin Intermontane Basin, West Sumatra

    SciTech Connect

    Koning, T. Petroleum Co., Lagos )

    1996-01-01

    The Ombilin Basin is a Tertiary intermontane basin located within the Barisan Mountain Range of Sumatra. Oil exploration commenced in the Ombilin Basin in the early 1980s when geological mapping was carried out, a synthetic aperture radar survey was flown, and a basin-wide geophysical survey was completed. This effort led to the drilling of Sinimar No. 1 to a total depth 3020 m. Sinimar No. 1 was a historic well in Indonesia's oil industry since it was the first oil exploration well drilled in the Ombilin Basin and also the first well drilled in an intermontane basin in Indonesia. Oil, gas and condensate was tested in the well. An integrated interpretation of the well, geophysical and outcrop data indicates that despite its small areal size (30 km x 50 km), the Ombilin Basin is a deep pull-apart basin containing up to 4500 m of Tertiary sediments, ranging in age from Middle Eocene to Early Miocene. The basin currently is in an intermontane basin structural setting but it was also an intermontane basin during its Early Tertiary depositional history. During the Eocene, alluvial fans and massive debris flows were deposited on the basin margins and a large lake occupied the basin center. Fluvial deposition occurred in the basin during the Oligocene followed by deposition of marine shales, sandstones, and isolated reefs during the Miocene. Although the Ombilin Basin is located within Sumatra's magmatic arc and is partially covered by volcanics from extinct and active volcanoes, the subsurface temperature gradients of 1.62 deg. F/100 ft. recorded in Sinimar No. I and 1.47 deg F/100 ft. measured in a deep (670 m) coal exploration core hole are significantly cooler than the average subsurface temperature gradients in the Sumatra back-arc basins. Organic-rich Eocene lacustrine shales are the likely source rocks for the hydrocarbons tested in Sinimar No. 1 and the oil seeps located along the basin margins.

  8. Lower and middle Guadalupian shelf carbonates, eastern margin of Central Basin platform, Permian basin, west Texas

    SciTech Connect

    Ward, R.F.; Chalcraft, R.G.

    1988-01-01

    Lower and middle Guadalupian shelf carbonates serve as the reservoir for a nearly continuous band of oil fields extending 100 mi along the eastern margin of the Central Basin platform of west Texas. Approximately 5 billion bbl of oil have been produced from stratigraphic-structural traps within the Upper Permian (Gaudalupian Series) dolomites of the San Andrea and Grayburg Formations in Upton, Crane, Ector, Pecos, and Andrews Counties, Texas. The San Andrea and Grayburg Formations are cyclical shallowing-upward carbonate sequences of open shelf through sabkha facies whose depositional strike parallels the eastern margin of the Central Basin platform. Porosity and permeability of reservoir rock are governed by diagenetic processes such as dolomitization, anhydrite porosity occlusion, leaching, silicification, and authigenic clay formation. Self sediments are primarily burrowed wackestones and packstones that locally contain pelletal, skeletal, and ooid grainstones. Typical subtidal shelf sediments are capped by algal-laminated dolomite, nodular anhydritic dolomite, and bedded anhydrite. The fauna is normally sparse and dominated by foraminifera and algae. Less common faunal components include pelecypods, crinoids, sponges, Bryozoa, brachiopods, gastropods, and coral that are associated with the development of small scattered patch reefs. Lowering the sea level during the early Guadalpian initiated basinward progradation of San Andres carbonate facies with hydrocarbon reservoirs best developed in shallow self fusulinid wackestones to packstone and oolitic grainstone. Reservoir dolomites of the Grayburg formation are present east of San Andres fields with optimal reservoir properties occurring near the San Andreas outer shelf margin.

  9. Geology of the Douala basin, offshore Cameroon, West Africa

    SciTech Connect

    Pauken, R.J.; Thompson, J.M.; Schumann, J.R. ); Cooke, J.C. )

    1991-03-01

    The Douala basin is predominantly an offshore basin extending from the Cameroon volcanic line in the north to the Corisco arch in the south near the Equatorial Guinea-Gabon border. The basin lies wholly within the territorial borders of Cameroon and Equatorial Guinea. The Douala basin is one of a series of divergent margin basins occurring along the southwest African coastline resulting from the rifting of Africa from South America. Continental rifting in the Doula basin was initiated at least by Aptian-Albian time and possibly as early as Jurassic. The rift stage persisted until Albian time when the onset of drifting occurred. The sedimentary section in the basin has a maximum thickness of 8-10 km, based on exploration drilling and gravity and magnetics modeling. The synrift section consists of Aptian-Albian sands and shales, deposited primarily as submarine fans, fan-deltas, and turbidite deposits. These are overlain by salt, thought to be equivalent to the Ezagna salt of Aptian age in the Gabon basin to the south. The synrift section is separated from the overlying postrift shale sequence of Late Cretaceous and Tertiary age by a major late Albian unconformity. The Douala basin has been explored for hydrocarbons intermittently over the last 25 years. Results show a distinct tendency for gas-proneness. The largest field recorded to date is the Sanaga Sud gas field, discovered in 1979, offshore, near the coastal city of Kribi.

  10. Hydrogeology of the West Branch Delaware River basin, Delaware County, New York

    USGS Publications Warehouse

    Reynolds, Richard J.

    2013-01-01

    In 2009, the U.S. Geological Survey, in cooperation with the New York State Department of Environmental Conservation, began a study of the hydrogeology of the West Branch Delaware River (Cannonsville Reservoir) watershed. There has been recent interest by energy companies in developing the natural gas reserves that are trapped within the Marcellus Shale, which is part of the Hamilton Group of Devonian age that underlies all the West Branch Delaware River Basin. Knowing the extent and thickness of stratified-drift (sand and gravel) aquifers within this basin can help State and Federal regulatory agencies evaluate any effects on these aquifers that gas-well drilling might produce. This report describes the hydrogeology of the 455-square-mile basin in the southwestern Catskill Mountain region of southeastern New York and includes a detailed surficial geologic map of the basin. Analysis of surficial geologic data indicates that the most widespread surficial geologic unit within the basin is till, which is present as deposits of ablation till in major stream valleys and as thick deposits of lodgment till that fill upland basins. Till and colluvium (remobilized till) cover about 89 percent of the West Branch Delaware River Basin, whereas stratified drift (outwash and ice-contact deposits) and alluvium account for 8.9 percent. The Cannonsville Reservoir occupies about 1.9 percent of the basin area. Large areas of outwash and ice-contact deposits occupy the West Branch Delaware River valley along its entire length. These deposits form a stratified-drift aquifer that ranges in thickness from 40 to 50 feet (ft) in the upper West Branch Delaware River valley, from 70 to 140 ft in the middle West Branch Delaware River valley, and from 60 to 70 ft in the lower West Branch Delaware River valley. The gas-bearing Marcellus Shale underlies the entire West Branch Delaware River Basin and ranges in thickness from 600 to 650 ft along the northern divide of the basin to 750 ft thick

  11. Assessment of undiscovered oil and gas resources of the West Siberian Basin Province, Russia, 2010

    USGS Publications Warehouse

    Klett, T.R.

    2011-01-01

    The U.S. Geological Survey, using a geology-based assessment methodology, estimated mean volumes of technically recoverable, conventional, undiscovered petroleum resources at 8 billion barrels of crude oil, 670 trillion cubic feet of natural gas, and 21 billion barrels of natural gas liquids for the West Siberian Basin Province in Russia as part of a program to estimate petroleum resources for priority basins throughout the world.

  12. Location of equipment in the 105K East discharge chute for installation of isolation barriers (ref USQ 94-0041): Revision 1

    SciTech Connect

    Hull, T.R.

    1994-11-04

    The scope of this report is to document the final location for equipment currently located in the 105 K-East discharge chute before beginning installation of the isolation barriers and equipment that will/may be left after completion of installation. The isolation barriers are to be installed at each basin in the openings between the discharge chute and the main basin. Once installed, the isolation barriers will remain in place, permanently isolating the discharge chute from direct communication with the main basin. After the isolation barriers are installed, the equipment left in the discharge chute will not be able to be moved out of the chute without being totally removed from the water. The equipment that will be addressed by this Supporting Document includes: Crusher, Dump Table, Packager, Seal Conveyor, Old Cofferdam Doors, Joint Cover and Location Bars, Canister Basket, Air Operated Sludge Pump and Discharge Hose, Fuel Segregation Canister Table, Seal Preparation Tool, and Miscellaneous tools and equipment.

  13. Tectonic evolution of the West Florida Basin, Eastern Gulf of Mexico

    NASA Astrophysics Data System (ADS)

    Gregg, Andrea Christine

    Basement geometry of the Eastern Gulf of Mexico developed following the breakup of Pangea and the opening of the Gulf of Mexico in Late Triassic time. Nine 2-D pre-stack depth migrated seismic profiles and a structural restoration provide insight into the evolution and development of the southern West Florida Basin, located west of the Florida Escarpment in the Eastern Gulf of Mexico. Seismic reflection profiles reveal basement structures probably developed following a combination of Late Triassic extension and extension and subsequent oceanic crust emplacement in Middle Jurassic time. During Late Triassic rifting, the West Florida Basin developed as a rift graben; however, the graben was later dissected during the Middle Jurassic drift episode. Absence of faulting, syn-rift deposition and sagging in the Lower Cretaceous seismic section indicates that extension and rotation of the Yucatan block must have stopped prior to Cretaceous time. After extension terminated and the Gulf of Mexico reached its modern day configuration, subsidence from lithospheric cooling and sediment loading dominated throughout Cretaceous time. A structural restoration confirms that following Late Triassic rifting, basement topography remains relatively elevated to the south in the West Florida Basin. Subsequent extension and subsidence further dissected the basement allowing for the deposition of Middle and Late Jurassic syn-rift and Cretaceous post-rift sediments. Because of the lack of well control in the West Florida Basin, seismic packages are correlated northward to the northern margin of the West Florida Basin and slope, the Tampa Embayment, and the Apalachicola Basin and southward to the Straits of Florida and Yucatan. Seismic interpretations reveal two syn-rift packages, Triassic-Jurassic (TJ) and Jurassic-Cretaceous (JK), and one post rift package, Early Cretaceous (EK), were deposited prior to the Mid-Cretaceous Sequence Boundary, a basin-wide unconformity that marks the

  14. Exploration of drought evolution using numerical simulations over the Xijiang (West River) basin in South China

    NASA Astrophysics Data System (ADS)

    Niu, Jun; Chen, Ji; Sun, Liqun

    2015-07-01

    The knowledge of drought evolution characteristics may aid the decision making process in mitigating drought impacts. This study uses a macro-scale hydrological model, Variable Infiltration Capacity (VIC) model, to simulate terrestrial hydrological processes over the Xijiang (West River) basin in South China. Three drought indices, namely standardized precipitation index (SPI), standardized runoff index (SRI), and soil moisture anomaly index (SMAI), are employed to examine the spatio-temporal and evolution features of drought events. SPI, SRI and SMAI represent meteorological drought, hydrological drought and agricultural drought, respectively. The results reveal that the drought severity depicted by SPI and SRI is similar with increasing timescales; SRI is close to that of SPI in the wet season for the Liu River basin as the high-frequency precipitation is conserved more by runoff; the time lags appear between SPI and SRI due to the delay response of runoff to precipitation variability for the You River basin. The case study in 2010 spring drought further shows that the spatio-temporal evolutions are modulated by the basin-scale topography. There is more consistency between meteorological and hydrological droughts for the fan-like basin with a converged river network. For the west area of the Xijiang basin with the high elevation, the hydrological drought severity is less than meteorological drought during the developing stage. The recovery of hydrological and agricultural droughts is slower than that of meteorological drought for basins with a longer mainstream.

  15. Tracing and age-dating injected groundwater of the west basin barrier project, Los Angeles, CA

    SciTech Connect

    Davisson, M L; Eaton, Gp; Hudson, G B; Koester, C

    1999-03-26

    This preliminary report summarizes results from isotopic data recently generated on water collected for the West Basin Municipal Water District (WBMWD). Samples comprised monitoring and production wells up to 3.5 miles form the injection barrier, in addition to barrier product and blend water.

  16. LIFE HISTORY MONITORING OF SALMONIDS IN THE WEST FORK SMITH RIVER, UMPQUA BASIN, OREGON

    EPA Science Inventory

    As a life-cycle monitoring basin for the Oregon Salmon Plan, the Oregon Department of Fish and Wildlife has estimated adult returns, distribution and smolt outmigration of coho, chinook and winter steelhead in the West Fork Smith River since 1998. In 2001/2002, the Environmenta...

  17. K West Basin Integrated Water Treatment System (IWTS) E-F Annular Filter Vessel Accident Calculations

    SciTech Connect

    PIEPHO, M.G.

    2000-01-10

    Four bounding accidents postulated for the K West Basin integrated water treatment system are evaluated against applicable risk evaluation guidelines. The accidents are a spray leak during fuel retrieval, spray leak during backflushing a hydrogen explosion, and a fire breaching filter vessel and enclosure. Event trees and accident probabilities are estimated. In all cases, the unmitigated dose consequences are below the risk evaluation guidelines.

  18. K West Basin Integrated Water Treatment System (IWTS) E-F Annular Filter Vessel Accident Calculations

    SciTech Connect

    RITTMANN, P.D.

    1999-10-07

    Three bounding accidents postdated for the K West Basin integrated water treatment system are evaluated against applicable risk evaluation guidelines. The accidents are a spray leak during fuel retrieval, spray leak during backflushing, and a hydrogen explosion. Event trees and accident probabilities are estimated. In all cases, the unmitigated dose consequences are below the risk evaluation guidelines.

  19. EAST/WEST TRUCK BAY AREA OF TRANSFER BASIN CORRIDOR OF FUEL ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    EAST/WEST TRUCK BAY AREA OF TRANSFER BASIN CORRIDOR OF FUEL STORAGE BUILDING (CPP-603). PHOTO TAKEN LOOKING NORTHWEST. INL PHOTO NUMBER HD-54-19-1. Mike Crane, Photographer, 8/2005 - Idaho National Engineering Laboratory, Idaho Chemical Processing Plant, Fuel Reprocessing Complex, Scoville, Butte County, ID

  20. Glacial geology of the West Tensleep Drainage Basin, Bighorn Mountains, Wyoming

    SciTech Connect

    Burggraf, G.B.

    1980-08-01

    The glacial deposits of the West Tensleep Basin in the Bighorn Mountains of Wyoming are mapped and a relative chromology established. The deposits are correlated with the regional model as defined in the Wind River Mountains. A statistical analysis is performed on the density and weathering characteristics of the surficial boulders to determine their validity as indicators of relative age. (ACR)

  1. 40Ar/39Ar dates from the West Siberian Basin: Siberian flood basalt province doubled.

    PubMed

    Reichow, Marc K; Saunders, Andrew D; White, Rosalind V; Pringle, Malcolm S; Al'Mukhamedov, Alexander I; Medvedev, Alexander I; Kirda, Nikolay P

    2002-06-07

    Widespread basaltic volcanism occurred in the region of the West Siberian Basin in central Russia during Permo-Triassic times. New 40Ar/39Ar age determinations on plagioclase grains from deep boreholes in the basin reveal that the basalts were erupted 249.4 +/- 0.5 million years ago. This is synchronous with the bulk of the Siberian Traps, erupted further east on the Siberian Platform. The age and geochemical data confirm that the West Siberian Basin basalts are part of the Siberian Traps and at least double the confirmed area of the volcanic province as a whole. The larger area of volcanism strengthens the link between the volcanism and the end-Permian mass extinction.

  2. Basin-mountain structures and hydrocarbon exploration potential of west Junggar orogen in China

    NASA Astrophysics Data System (ADS)

    Wu, X.; Qi, X.; Zheng, M.

    2015-12-01

    Situated in northern Xinjiang, China, in NE-SW trend, West Junggar Orogen is adjacent to Altai fold belt on the north with the Ertix Fault as the boundary, North Tianshan fold belt on the south with the Ebinur Lake Strike-slip Fault as the boundary, and the Junggar Basin on the southeast with Zaire-Genghis Khan-Hala'alat fold belt as the boundary. Covering an area of about 10×104 km2 in China, there are medium and small intermontane basins, Burqin-Fuhai, Tacheng, Hefeng and Hoxtolgay, distributing inside the orogen. Tectonically West Junggar Orogen lies in the middle section of the Palaeo-Asian tectonic domain where the Siberia, Kazakhstan and Tarim Plates converge, and is the only orogen trending NE-SW in the Palaeo-Asian tectonic domain. Since the Paleozoic, the orogen experienced pre-Permian plate tectonic evolution and post-Permian intra-plate basin evolution. Complex tectonic evolution and multi-stage structural superimposition not only give rise to long term controversial over the basin basement property but also complex basin-mountain coupling relations, structures and basin superimposition modes. According to analysis of several kinds of geological and geophysical data, the orogen was dominated by compressive folding and thrust napping from the Siberia plate in the north since the Late Paleozoic. Compressive stress weakened from north to south, corresponding to subdued vertical movement and enhanced horizontal movement of crustal surface from north to south, and finally faded in the overthrust-nappe belt at the northwest margin of the Junggar Basin. The variation in compressive stress is consistent with the surface relief of the orogen, which is high in the north and low in the south. There are two kinds of basin-mountain coupling relationships, i.e. high angle thrusting and overthrusting and napping, and two kinds of basin superimposition modes, i.e. inherited and progressive, and migrating and convulsionary modes. West Junggar orogen has rich oil and gas

  3. Basin Characteristics for Selected Streamflow-Gaging Stations In and Near West Virginia

    USGS Publications Warehouse

    Paybins, Katherine S.

    2008-01-01

    Basin characteristics have long been used to develop equations describing streamflow. In the past, flow equations used in West Virginia were based on a few hand-calculated basin characteristics. More recently, the use of a Geographic Information System (GIS) to generate basin characteristics from existing datasets has refined the process for developing equations to describe flow values in the Mountain State. These basin characteristics are described in this document for streamflow-gaging stations in and near West Virginia. The GIS program developed in ArcGIS Workstation by Environmental Systems Research Institute (ESRI?) used data that included National Elevation Dataset (NED) at 1:24,000 scale, climate data from the National Oceanic and Atmospheric Agency (NOAA), streamlines from the National Hydrologic Dataset (NHD), and LandSat-based land-cover data (NLCD) for the period 1999-2003. Full automation of data generation was not achieved due to some inaccuracies in the elevation dataset, as well as inaccuracies in the streamflow-gage locations retrieved from the National Water Information System (NWIS). A Pearson?s correlation examination of the data indicates that several of the basin characteristics are correlated with drainage area. However, the GIS-generated data provide a consistent and documented set of basin characteristics for resource managers and researchers to use.

  4. Unconformity structures controlling stratigraphic reservoirs in the north-west margin of Junggar basin, North-west China

    NASA Astrophysics Data System (ADS)

    Wu, Kongyou; Paton, Douglas; Zha, Ming

    2013-03-01

    Tectonic movements formed several unconformities in the north-west margin of the Junggar basin. Based on data of outcrop, core, and samples, the unconformity is a structural body whose formation associates with weathering, leaching, and onlap. At the same time, the structural body may be divided into three layers, including upper layer, mid layer, and lower layer. The upper layer with good primary porosity serves as the hydrocarbon migration system, and also accumulates the hydrocarbon. The mid layer with compactness and ductility can play a role as cap rock, the strength of which increases with depth. The lower layer with good secondary porosity due to weathering and leaching can form the stratigraphic truncation traps. A typical stratigraphic reservoir lying in the unconformity between the Jurassic and Triassic in the north-west margin of the Junggar basin was meticulously analyzed in order to reveal the key controlling factors. The results showed that the hydrocarbon distribution in the stratigraphic onlap reservoirs was controlled by the onlap line, the hydrocarbon distribution in the stratigraphic truncation reservoirs was confined by the truncation line, and the mid layer acted as the key sealing rock. So a conclusion was drawn that "two lines (onlap line and truncation line) and a body (unconformity structural body)" control the formation and distribution of stratigraphic reservoirs.

  5. Subsidence, erosion and thermal history of the West Carpathian Foredeep Basin, Czech Republic

    NASA Astrophysics Data System (ADS)

    Francu, J.; Šafanda, J.; Cermak, V.; Krejci, O.; Andriessen, P.

    2012-04-01

    The present shape of the West Carpathian Foredeep Basin (WCFB) in the Czech Republic is strikingly narrower than the Alpine Molasse Basin in Austria and Carpathian Foredeep in Poland. Our study presents data on heat flow and thermal maturity patterns in the WCFB and compares them with the relevant data in the underlying units and adjacent West Carpathian Flysch Belt in order to evaluate the extent of erosion. In general the heat flow is very low in the Vienna Basin and moderately increases to NE, where the highest values are observed above the coal-bearing Upper Silesian Basin. Lower to Middle Miocene rocks of the WCFB show very mild increase of thermal maturity of kerogen and low decrease in porosity with depth down to 5 km. Organic matter is thermally immature as deep as 4 km where the strata enter early oil window. The underlying Paleogene, Cretaceous, and Jurassic follow a very similar diagenetic trend and suggest only local erosion in incised valleys, where Eocene sediments replaced the removed Mesozoic rocks. Marked offset in thermal maturity is observed between the top of Carboniferous and younger units evidencing regional erosion of 1.8-5 km of Late Paleozoic strata. Significant difference in thermal maturity exists between the Miocene of the WCFB and West Carpathian Flysch Belt (FlB). The application of basin modeling suggests that the deepest burial and catagenesis of the Mesozoic to Tertiary sedimentary rocks occurred prior to imbrication and stacking of the tectonic slices. The uplift and erosion in the FlB increases from the frontal Zdanice and Subsilesian units to Silesian and Raca nappes situated closer to hinterland, while the Bile Karpaty nappe does not follow this rule and is less mature than Raca (Magura). The erosion and transport of sediments to the sink areas of the Vienna and Danube Basins occurred during the final phases of thrust propagation in the Early Miocene and continued to Middle (Upper?) Miocene. The fission track data suggest that

  6. Basin-mountain structures and hydrocarbon exploration potential of west Junggar orogen in China

    NASA Astrophysics Data System (ADS)

    Wu, Xiaozhi; He, Dengfa; Qi, Xuefeng

    2016-04-01

    Situated in northern Xinjiang, China, in NE-SW trend, West Junggar Orogen is adjacent to Altai fold belt on the north with the Ertix Fault as the boundary, North Tianshan fold belt on the south with the Ebinur Lake Strike-slip Fault as the boundary, and the Junggar Basin on the southeast with Zaire-Genghis Khan-Hala'alat fold belt as the boundary. Covering an area of about 10×104 km2 in China, there are medium and small intermontane basins, Burqin-Fuhai, Tacheng, Hefeng and Hoxtolgay, distributing inside the orogen. Tectonically West Junggar Orogen lies in the middle section of the Palaeo-Asian tectonic domain where the Siberia, Kazakhstan and Tarim Plates converge, and is the only orogen trending NE-SW in the Palaeo-Asian tectonic domain. Since the Paleozoic, the orogen experienced pre-Permian plate tectonic evolution and post-Permian intra-plate basin evolution. Complex tectonic evolution and multi-stage structural superimposition not only give rise to long term controversial over the basin basement property but also complex basin-mountain coupling relations, structures and basin superimposition modes. According to analysis of several kinds of geological and geophysical data, the orogen was dominated by compressive folding and thrust napping from the Siberia plate in the north since the Late Paleozoic. Compressive stress weakened from north to south, corresponding to subdued vertical movement and enhanced horizontal movement of crustal surface from north to south, and finally faded in the overthrust-nappe belt at the northwest margin of the Junggar Basin. The variation in compressive stress is consistent with the surface relief of the orogen, which is high in the north and low in the south. There are two kinds of basin-mountain coupling relationships, i.e. high angle thrusting and overthrusting and napping, and two kinds of basin superimposition modes, i.e. inherited and progressive, and migrating and convulsionary modes. West Junggar orogen has rich oil and gas

  7. Impact of climate change on vegetation dynamics in a West African river basin

    NASA Astrophysics Data System (ADS)

    Sawada, Y.; Koike, T.

    2012-12-01

    Future changes in terrestrial biomass distribution under climate change will have a tremendous impact on water availability and land productivity in arid and semi-arid regions. Assessment of future change of biomass distribution in the regional or the river basin scale is strongly needed. An eco-hydrological model that fully couples a dynamic vegetation model (DVM) with a distributed biosphere hydrological model is applied to multi-model assessment of climate change impact on vegetation dynamics in a West African river basin. In addition, a distributed and auto optimization system of parameters in DVM is developed to make it possible to model a diversity of phonologies of plants by using different parameters in the different model grids. The simple carbon cycle modeling in a distributed hydrological model shows reliable accuracy in simulating the seasonal cycle of vegetation on the river basin scale. Model outputs indicate that generally, an extension of dry season duration and surface air temperature rising caused by climate change may cause a dieback of vegetation in West Africa. However, we get different seasonal and spatial changes of leaf area index and different mechanisms of the degradation when we used different general circulation models' outputs as meteorological forcing of the eco-hydrological model. Therefore, multi-model analysis like this study is important to deliver meaningful information to the society because we can discuss the uncertainties of our prediction by this methodology. This study makes it possible to discuss the impact of future change of terrestrial biomass on climate and water resources in the regional or the river basin scale although we need further sophistications of the system. Performance of the eco-hydrological model (WEB-DHM+DVM) in Volta River Basin, with basin-averaged leaf area index from model (blue solid line) and AVHRR satellite-derived product (red rectangles).

  8. Vitrinite reflectance data for the Permian Basin, west Texas and southeast New Mexico

    USGS Publications Warehouse

    Pawlewicz, Mark; Barker, Charles E.; McDonald, Sargent

    2005-01-01

    This report presents a compilation of vitrinite reflectance (Ro) data based on analyses of samples of drill cuttings collected from 74 boreholes spread throughout the Permian Basin of west Texas and southeast New Mexico (fig. 1). The resulting data consist of 3 to 24 individual Ro analyses representing progressively deeper stratigraphic units in each of the boreholes (table 1). The samples, Cambrian-Ordovician to Cretaceous in age, were collected at depths ranging from 200 ft to more than 22,100 ft.The R0 data were plotted on maps that depict three different maturation levels for organic matter in the sedimentary rocks of the Permian Basin (figs. 2-4). These maps show depths at the various borehole locations where the R0 values were calculated to be 0.6 (fig. 2), 1.3 (fig. 3), and 2.0 (fig. 4) percent, which correspond, generally, to the onset of oil generation, the onset of oil cracking, and the limit of oil preservation, respectively.The four major geologic structural features within the Permian Basin–Midland Basin, Delaware Basin, Central Basin Platform, and Northwest Shelf (fig. 1) differ in overall depth, thermal history and tectonic style. In the western Delaware Basin, for example, higher maturation is observed at relatively shallow depths, resulting from uplift and eastward basin tilting that began in the Mississippian and ultimately exposed older, thermally mature rocks. Maturity was further enhanced in this basin by the emplacement of early and mid-Tertiary intrusives. Volcanic activity also appears to have been a controlling factor for maturation of organic matter in the southern part of the otherwise tectonically stable Northwest Shelf (Barker and Pawlewicz, 1987). Depths to the three different Ro values are greatest in the eastern Delaware Basin and southern Midland Basin. This appears to be a function of tectonic activity related to the Marathon-Ouachita orogeny, during the Late-Middle Pennsylvanian, whose affects were widespread across the Permian

  9. The habitat of petroleum in the Brazilian marginal and west African basins: A biological marker investigation

    SciTech Connect

    Mello, M.R.; Soldan, A.L. ); Maxwell, J.R. ); Figueira, J. )

    1990-05-01

    A geochemical and biological marker investigation of a variety of oils from offshore Brazil and west Africa, ranging in age from Lower Cretaceous to Tertiary, has been done, with the following aims: (1) assessing the depositional environment of source rocks, (2) correlating the reservoired oils, (3) comparing the Brazilian oils with their west African counterparts. The approach was based in stable isotope data; bulk, elemental, and hydrous pyrolysis results; and molecular studies involving quantitative geological marker investigations of alkanes using GC-MS and GC-MS-MS. The results reveal similarities between groups of oils from each side of the Atlantic and suggest an origin from source rocks deposited in five types of depositional environment: lacustrine fresh water, lacustrine saline water, marine evaporitic/carbonate, restricted marine anoxic, and marine deltaic. In west Africa, the Upper Cretaceous marine anoxic succession (Cenomanian-Santonian) appears to be a major oil producer, but in Brazil it is generally immature. The Brazilian offshore oils have arisen mainly from the pre-salt sequence, whereas the African oils show a balance between origins from the pre-salt and marine sequences. The integration of the geochemical and geological data indicate that new frontiers of hydrocarbon exploration in the west African basins must consider the Tertiary reservoirs in the offshore area of Niger Delta, the reservoirs of the rift sequences in the shallow-water areas of south Gabon, Congo, and Cuanza basins, and the reservoirs from the drift sequences (post-salt) in the deep-water areas of Gabon, Congo Cabinda, and Cuanza basins.

  10. Assessment of Undiscovered Oil and Gas Resources of the West Siberian Basin Province, Russia, 2008

    USGS Publications Warehouse

    Schenk, Christopher J.; Bird, Kenneth J.; Charpentier, Ronald R.; Gautier, Donald L.; Houseknecht, David W.; Klett, Timothy R.; Moore, Thomas E.; Pawlewicz, Mark J.; Pitman, Janet K.; Tennyson, Marilyn E.

    2008-01-01

    The U.S. Geological Survey (USGS) recently assessed the undiscovered oil and gas potential of the West Siberian Basin Province in Russia as part of the USGS Circum-Arctic Resource Appraisal program. This province is the largest petroleum basin in the world and has an areal extent of about 2.2 million square kilometers. It is a large rift-sag feature bounded to the west by the Ural fold belt, to the north by the Novaya Zemlya fold belt and North Siberian Sill, to the south by the Turgay Depression and Altay-Sayan fold belt, and to the east by the Yenisey Ridge, Turukhan-Igarka uplift, Yenisey-Khatanga Basin, and Taimyr High. The West Siberian Basin Province has a total discovered oil and gas volume of more than 360 billion barrels of oil equivalent (Ulmishek, 2000). Exploration has led to the discovery of tens of giant oil and gas fields, including the Urengoy gas field with more than 3500 trillion cubic feet of gas reserves and Samotlar oil field with reserves of nearly 28 billion barrels of oil (Ulmishek, 2003). This report summarizes the results of a reassessment of the undiscovered oil and gas potential of that part of the province north of the Arctic Circle; a previous assessment that included the entire province was completed in 2000 (Ulmishek, 2000). The total petroleum system (TPS) and assessment units (AU) defined by the USGS for the assessments in 2000 were adopted for this assessment. However, only those parts of the Aus lying wholly or partially north of the Arctic Circle were assessed for this study.

  11. Structural style of the Cuyo-Bolsones basin complex of west-central Argentina

    SciTech Connect

    Gollop, I.G. )

    1991-03-01

    The Cuyo-Bolsones basin complex is part of a mosaic of basinal features that lie in the eastern Andean foreland. Sedimentary section ranges from Ordovician to Tertiary in age with the main petroleum source and reservoir potential in Carboniferous to Triassic clastics. Thick conglomerate units and widespread unconformities of both Permo-Carboniferous and Triassic age as well as localized volcanics indicate several periods of violent tectonic activity during late Paleozoic to early Mesozoic times. Triassic and older sediments are affected by normal faulting which in basins directly south extends up into the Lower Cretaceous. In the Cuyo-Bolsones basinal area, however this ancient tensional regime is entirely overprinted by relatively recent thrusting. This thrusting is late Tertiary in age, generally from east to west with very substantial relief. These thrust sheets are cut in places by later northeast-southwest strike-slip fault zones producing some localized flower structures. Nearly all the oil discovered in the Cuyo basin is produced from Triassic clastic reservoirs in compressional anticlines related to this thrusting. The major thrusts are well defined seismically, and seismic interpretations fit easily on balanced sections.

  12. Upper Permian (Guadalupian) facies and their association with hydrocarbons - Permian basin, west Texas and New Mexico

    SciTech Connect

    Ward, R.F.; Kendall, C.G.S.C.; Harris, P.M.

    1986-03-01

    Outcrops of Guadalupian sedimentary rocks in the Permian basin of west Texas and southeastern New Mexico are a classic example of the facies relationships that span a carbonate shelf. In the subsurface, these rocks form classic hydrocarbon-facies taps. Proceeding from basin to the updip termination of the shelf, the facies are (1) deep-water basin, (2) an apron of allochthonous carbonates, (3) carbonate shelf margin or reef, (4) carbonate sand flats, (5) carbonate barrier islands, (6) lagoon, and (7) coastal playas and supratidal salt flats (sabkhas). Over a half century of exploration drilling has shown that hydrocarbons in the Permian rocks of the Permian basin have accumulated at the updip contact of the lagoonal dolomites and clastics with the coastal evaporites, and in the basinal channel-fill clastics. The shelf marginal (reef) facies contain cavernous porosity, but commonly are water saturated. These facies relationships and hydrocarbon occurrences provide an exploration model with which to explore and rank hydrocarbon potential in other carbonate provinces. 16 figures, 3 tables.

  13. DOE West Coast Basin program, California Basin Study: Progress report 4, (July 1986-June 1987)

    SciTech Connect

    Small, L.F.; Huh, Chih-An

    1987-06-01

    The overall objective of our research is to understand the transport pathways and mass balances of selected metabolically active and inactive chemical species in the Santa Monica/San Pedro Basins. One focus is to examine the role of zooplankton and micronekton in the cycling and remineralization of chemical materials in the Southern California Bight, with particular reference to C, N and certain radionuclides and trace metals. A second focus is to examine these same radionuclides and trace metals in other reservoirs besides the zooplankton (i.e., in seawater, sediment trap material and bottom sediments). Knowledge of the rates, routes and reservoirs of these nuclides and metals should lead to a cogent model for these elements in Santa Monica/San Pedro Basins. 28 refs., 13 figs., 7 tabs.

  14. A tectonically controlled basin-fill within the Valle del Cauca, West-Central Colombia

    SciTech Connect

    Rine, J.M.; Keith, J.F. Jr.; Alfonso, C.A.; Ballesteros, I.; Laverde, F.; Sacks, P.E.; Secor, D.T. Jr. ); Perez, V.E.; Bernal, I.; Cordoba, F.; Numpaque, L.E. )

    1993-02-01

    Tertiary strata of the Valle del Cauca reflect a forearc/foreland basin tectonic history spanning a period from pre-uplift of the Cordillera Central to initiation of uplift of the Cordillera Occidental. Stratigraphy of the Valle del Cauca begins with Jurassic-Cretaceous rocks of exotic and/or volcanic provenance and of oceanic origin. Unconformably overlying these are Eocene to Oligocene basal quartz-rich sandstones, shallow marine algal limestones, and fine-grained fluvial/deltaic mudstones and sandstones with coalbeds. These Eocene to Oligocene deposits represent a period of low tectonic activity. During late Oligocene to early Miocene, increased tectonic activity produced conglomeratic sediments which were transported from east to west, apparently derived from uplift of the Cordillera Central, and deposited within a fluvial to deltaic setting. East-west shortening of the Valle del Cauca basin folded the Eocene to early Miocene units, and additional uplift of the Cordillera Central during the later Miocene resulted in syn-tectonic deposition of alluvial fans. After additional fold and thrust deformation of the total Eocene-Miocene basin-fill, tectonic activity abated and Pliocene-Quaternary alluvial and lacustrine strata were deposited. Within the framework of this depositional and tectonic history of the Valle del Cauca, hydrocarbon exploration strategies can be formulated and evaluated.

  15. California Basin study (CaBS): DOE west coast basin program

    SciTech Connect

    Small, L.F.

    1990-01-01

    The overall objective of our research continues to be elucidation of the transport pathways and transformations of organic matter in the California Basins region, with particular reference to the role of macrozooplankton in upper waters. We have concentrated on C and N pathways and fluxes to data, and will continue to investigate these further (seasonal aspects, and the role of zooplankton carnivory in zooplankton-medicated C and N flux, for example).

  16. Long-Term Water Balance of the Volta River Basin in West Africa

    NASA Astrophysics Data System (ADS)

    van de Giesen, N.; Andreini, M.; Taylor, J.; Steenhuis, T.

    2002-12-01

    The Volta River drains approximately 400,000 km2 of the semi-arid to sub-humid savanna of West Africa. Average rainfall is about 1000 mm per year. The interannual variation is relatively low with a coefficient of variation of 0.07. Most rainfall returns to the atmosphere as evapotranspiration and only 9% becomes available as river runoff. The interannual variation of river flow is much higher than that of rainfall and has a coefficient of variation of 0.57. In this presentation, the coupling between interannual variation in rainfall and runoff is examined. To a large extent, the high variability in river flow can be explained with the relatively small differences in rainfall between years; the watershed strongly amplifies the atmospheric input. The amplifying effect is, however, not constant over space and time. Over all, the basin received less rain than before in the past two decades. Some parts of the basin did indeed produce less runoff but other parts actually produced more runoff, most likely due to changes in landuse. No clear increase or decrease in the interannual variability could be found for different parts of the basin. To examine the interannual variability of water resources availability under future climates, the applicability of General Circulation Models (GCMs) was examined for West Africa. Comparison of historical and GCM rainfall data showed large discrepancies. Different approaches exist to adjust GCM rainfall with the aid of historical rainfall data but for West Africa some problems remained. This presentation concludes with a focus on differences in mid-term (2-10 years) persistence in annual river flow as produced by historical and GCM data.

  17. Impact of future climate change on streamflow in the White Volta river basin, West Africa

    NASA Astrophysics Data System (ADS)

    Obuobie, E.; Diekkrüger, B.; Liebe, J.

    2009-04-01

    The Soil and Water Assessment Tool (SWAT) model was applied in the White Volta river basin, West Africa, to simulate the streamflow and to estimate the impact of future climate change on the streamflow. The White Volta river basin is one of the three major sub-basins of the Volta river basin, and drains an area of about 106,000 km2 mainly shared by the riparian countries, Burkina Faso and Ghana. The model was calibrated and validated using daily measured streamflow data from the stream gage at Nawuni, for the period 1980-2000. Impact of future climate change on streamflow was estimated by simulating streamflow of two time slices, the present (1990-2000) and future (2030-2039), using the calibrated SWAT model and stochastically generated daily climate series and comparing their mean annual values. The generated future climate series reflected monthly changes in precipitation and temperature forecasted by the meso-scale climate model MM5, which was downscaled from ECHAM4 scenario IS92a. The results show that SWAT is able to accurately reproduce the streamflow in the White Volta Basin. The coefficient of determination and Nash-Sutcliffe model efficiency were found to be, respectively, higher than 0.8 and 0.7, for both the calibration and validation periods. Compared to the present, the future mean annual streamflow and the annual coefficient of variation of the streamflow in the basin are expected to increase by 33% and 52%, respectively, as a result of future climate change.

  18. Thermal springs in the Payette River basin, west-central Idaho

    USGS Publications Warehouse

    Lewis, R.E.; Young, H.W.

    1980-01-01

    The Payette River basin, characterized by steep, rugged mountains and narrow river valleys, occupies an area of about 3 ,300 square miles in west-central Idaho. Predominant rock types in the basin include granitic rocks of the Idaho batholith and basalt flows of the Columbia River Basalt Group. Waters from thermal springs in the basin, temperatures of which range from 34 to 86 degrees Celsius, are sodium bicarbonate types and are slightly alkaline. Dissolved-solids concentrations range from 173 to 470 milligrams per liter. Reservoir temperatures determined from the sodium-potassium-calcium and silicic acid-corrected silica geothermometers range from 53 to 143 degrees Celsius. Tritium, present in concentrations between 0 and 2 tritium units, indicate sampled thermal waters are at least 100 years old and possibly more than 1,000 years old. Stable isotope data indicate it is unlikely any of the nonthermal waters sampled are representative of precipitation that recharges the thermal springs in the basin. Thermal springs discharged about 5,700 acre-feet of water in 1979. Associated convective heat flux is 1.1x10 to the 7th power calories per second. (USGS)

  19. Flood of July 9-11, 1993, in the Raccoon River basin, west-central Iowa

    USGS Publications Warehouse

    Eash, D.A.; Koppensteiner, B.A.

    1997-01-01

    Water-surface-elevation profiles and peak discharges for the flood of July 9-11, 1993, in the Raccoon River Basin, west-central Iowa, are presented in this report. The profiles illustrate the 1993 flood along the Raccoon, North Raccoon, South Raccoon, and Middle Raccoon Rivers and along Brushy and Storm Creeks in the west-central Iowa counties of Carroll, Dallas, Greene, Guthrie, and Polk. Water-surface-elevation profiles for the floods of June 1947, March 1979, and June 29- July 1, 1986, in the Raccoon River Basin also are included in the report for comparative purposes. The July 9-11, 1993, flood is the largest known peak discharge at gaging stations Brushy Creek near Templeton (station number 05483318) 19,000 cubic feet per second, Middle Raccoon River near Bayard (station number 05483450) 27,500 cubic feet per second, Middle Raccoon River at Panora (station number 05483600) 22,400 cubic feet per second, South Raccoon River at Redfield (station number 05484000) 44,000 cubic feet per second, and Raccoon River at Van Meter (station number 05484500) 70,100 cubic feet per second. The peak discharges were, respectively, 1.5, 1.3, 1.1,1.2, and 1.3 times larger than calculated 100-year recurrence-interval discharges. The report provides information on flood stages and discharges and floodflow frequencies for streamflow-gaging stations in the Raccoon River Basin using flood information collected through 1996. A flood history summarizes rainfall conditions and damages for floods that occurred during 1947, 1958, 1979, 1986, 1990, and 1993. Information on temporary bench marks and reference points established in the Raccoon River Basin during 1976-79 and 1995-97 also is included in the report.

  20. Evaporite replacement within the Permian strata of the Bighorn Basin, Wyoming and the Delaware Basin, west Texas and New Mexico

    SciTech Connect

    Ulmer, D.S.; Scholle, P.A. )

    1992-01-01

    The Park City and Goose Egg Formations of the Big Horn Basin, Wyoming and the Seven Rivers, Yates and Tansill Formations of west Texas and New Mexico contain numerous examples of silicified and calcitized evaporites. Both areas show significant preserved interstitial evaporite, but on outcrop the discrete crystals and nodular evaporites have been extensively replaced. These replacements appear to be a multistage phenomenon. Field and petrographic evidence (matted fabrics in nodules; evaporite inclusions) indicate that silicification involved direct replacement of evaporites and probably occurred during earlier stages of burial. Calcitization, however, appears to be a much later phenomenon and involved precipitation of coarse crystals within evaporite molds. The calcites are typically free of evaporite inclusions. Isotopic analyses of these calcites give a wide range of values from [minus]6.04 to [minus]25.02 [per thousand] [delta][sup 18]O and +6.40 to [minus]25.26 [per thousand] [delta][sup 13]C, reflecting their complex diagenetic histories. In both localities, silicification of evaporites was completed by the end of hydrocarbon migration and emplacement. The extremely broad isotopic range of the calcites indicates that the calcitization occurred during a long period of progressive uplift and increased groundwater circulation associated with mid-Tertiary block faulting. The very light oxygen values within the Bighorn Basin were produced by thermochemical sulfate reduction during deepest burial of the region. Evaporite diagenesis in both the Bighorn and Delaware Basins is an ongoing process that started prior to hydrocarbon migration, continued over millions of years, and has the potential to do significant porosity change.

  1. Mantle density structure of the Siberian craton and the West Siberian basin

    NASA Astrophysics Data System (ADS)

    Cherepanova, Y. V.; Artemieva, I. M.

    2013-12-01

    We present a mantle density model of the Proterozoic- Paleozoic West Siberian basin (WSB) and the Archean -Proterozoic Siberian craton (SC) based on free-board constraints. Given complex tectonic evolution of both WSB and SC, a strong compositional heterogeneity of mantle lithosphere is expected, but has never been documented so far in regional geophysical studies. In particular, the Siberian craton, formed by amalgamation of Archean terranes, has been significantly affected by Proterozoic collisional and extensional events, Devonian rifting of the Vilyui rift, and several pulses of kimberlite magmatism. The basement of the West Siberian basin, the largest in the world intracontinental basin, was formed by amalgamation of island arcs, terranes, micro-continents, and relict ocean basins during late Proterozoic-Paleozoic orogenic events, and was later affected by the Permian-early Triassic rifting, followed by emplacement of the Siberian traps, which cover much of the SC and the WSB. Their source region and geodynamic origin are still a subject of debate, although a strong reworking of the lithosphere is expected to be associated with the Siberian LIP. The present-day West Siberian basin and the Siberian craton lack significant surface topography variations, whereas the crustal structure is highly heterogeneous with large lateral variations in crustal thickness (ca. 20 km), thickness of sediments (ca. 15 km), and average crustal density (Cherepanova et al., 2013). Similarly, thermal regime of the lithosphere is also heterogeneous, ranging from typical cold cratonic geotherms in much of the SC with up-to 350 km thick lithosphere to hot geotherms in the rifted part of the WSB, where the lithosphere thickness is ca. 90-130 km (Artemieva and Mooney, 2001). Nonetheless, free air gravity is near-zero for much of Siberia suggesting that it is close to isostatic equilibrium. Topography, through the lithosphere buoyancy, is controlled by the structure of the mantle

  2. Geological evolution of the West Luzon Basin (South China Sea, Philippines)

    NASA Astrophysics Data System (ADS)

    Arfai, J.; Franke, D.; Gaedicke, C.; Lutz, R.; Schnabel, M.; Ramos, E. G.

    2010-05-01

    Interpretation of new multichannel seismic data sheds insights into the geologic evolution of the West Luzon Basin (WLB), Philippines. The basin stretches for about 200 km in north-south direction and for up to 50 km in east-west direction. The West Luzon Basin is a sediment-filled trough that is located between the island of Luzon and the outer arc high of the eastward directed subduction of the South China Sea oceanic crust at the Manila Trench. However, at the southern end of the Manila Trench, where its trend changes from N-S to NW-SE and projects towards Mindoro, continental collision occurs (e.g. Lewis & Hayes, 1985). In 2008 approximately 1000 line-kilometres of regional multichannel seismic (MCS) data were obtained in the area of the WLB during a cruise with the German research vessel SONNE. In our MCS data six major unconformities in the WLB separate major stratigraphic units. We interpret high-amplitude, low-frequency reflection bands as acoustic basement that is dissected by normal faults. In the deep parts (4.5-5 s; TWT) of our E-W running seismic profiles we can trace a major fault system with a fault offset of 1-1.5 s (TWT). We suggest an initial development of the structure as a normal fault system, which later was inverted locally. A major change in the depositional regime occurs in the lower part of the sedimentary infill. A distinct bottom simulating reflector (BSR) is commonly observed. Grid calculations of the sediment thickness of the lower stratigraphic units give detailed values of deposition shifts and reveal variations in subsidence of the basin. Based on the depth of bottom simulating reflectors (BSR) heat flow values of 35-40 mW/m2 were calculated, which are typical for forearc basins. Two peculiarities of the WLB are not well in accordance with a forearc setting: The acoustic basement was affected by extensional deformation resulting in normal faulting with fault offsets up to 400 ms (TWT) but extension did not affect sedimentary layers

  3. Age and tectonic evolution of the northwest corner of the West Philippine Basin

    NASA Astrophysics Data System (ADS)

    Doo, Wen-Bin; Hsu, Shu-Kun; Yeh, Yi-Ching; Tsai, Ching-Hui; Chang, Ching-Ming

    2015-09-01

    To understand the tectonic characteristics and age of the northwestern part of the West Philippine Basin (WPB), multi-beam bathymetry and geomagnetic data have been collected and analyzed. The seafloor morphology obviously shows NW-SE trending seafloor fabrics and NE-SW trending fracture zones, indicating a NE-SW seafloor spreading direction. An overlapping spreading center near 22°20'N and 125°E is identified. Besides, numerous seamounts indicate an excess supply of magma during or after the oceanic crust formation. A V-shaped seamount chain near 21°52'N and 124°26'E indicates a southeastward magma propagation and also indicates the location of the seafloor spreading ridge. On the basis of the newly collected geomagnetic data, the magnetic anomaly shows NW-SE trending magnetic lineations. Both bathymetry and geomagnetic data reveal NE-SW seafloor spreading features between the Gagua Ridge and the Luzon Okinawa fracture zone (LOFZ). Our magnetic age modeling indicates that the age of the northwestern corner of the WPB west of the LOFZ is between 47.5 to 54 Ma (without including overlapping spreading center), which is linked to the first spreading phase of the WPB to the east of the LOFZ. In addition, the age of the Huatung Basin is identified to be between 33 to 42 Ma, which is similar to the second spreading phase of the WPB.

  4. Epidemiology of West Nile Disease in Europe and in the Mediterranean Basin from 2009 to 2013

    PubMed Central

    Di Sabatino, Daria; Bruno, Rossana; Danzetta, Maria Luisa; Cito, Francesca; Iannetti, Simona; Narcisi, Valeria; De Massis, Fabrizio; Calistri, Paolo

    2014-01-01

    West Nile virus (WNV) transmission has been confirmed in the last four years in Europe and in the Mediterranean Basin. An increasing concern towards West Nile disease (WND) has been observed due to the high number of human and animal cases reported in these areas confirming the importance of this zoonosis. A new epidemiological scenario is currently emerging: although new introductions of the virus from abroad are always possible, confirming the epidemiological role played by migratory birds, the infection endemisation in some European territories today is a reality supported by the constant reoccurrence of the same strains across years in the same geographical areas. Despite the WND reoccurrence in the Old World, the overwintering mechanisms are not well known, and the role of local resident birds or mosquitoes in this context is poorly understood. A recent new epidemiological scenario is the spread of lineage 2 strain across European and Mediterranean countries in regions where lineage 1 strain is still circulating creating favourable conditions for genetic reassortments and emergence of new strains. This paper summarizes the main epidemiological findings on WNV occurrence in Europe and in the Mediterranean Basin from 2009 to 2013, considering potential future spread patterns. PMID:25302311

  5. Apatite fission-track thermochronology of the southern Appalachian Basin: Maryland, West Virginia, and Virginia

    SciTech Connect

    Roden, M.K. )

    1991-01-01

    Apatite fission-track apparent ages (246 {plus minus} 37 to 95 {plus minus} 18 Ma) for 26 samples of upper Devonian (Hampshire and Chemung Formations) and middle Devonian age (Tioga Ash Bed) from the southern Appalachian Basin of Maryland, Virginia, and West Virginia, along with confined track length distributions for 13 of these samples, suggest that uplift was contemporaneous with Triassic-Jurassic extension along the Atlantic continental margin. Uplift, as measured by apatite fission-track analysis, began earliest in the northwestern section on the Cumberland Plateau at {approximately}225 {plus minus} 25 Ma. This area probably required the least amount of erosional unroofing ({approximately}3.1 km). Samples from the Valley and Ridge Province of northern West Virginia, Virginia, and Maryland yield progressively younger apatite fission-track apparent ages to the east (ranging from 163 {plus minus} 10 to 95 {plus minus} 18 Ma). This is consistent with deeper burial in the eastern Appalachian Basin as indicated by increasing CAI indices and geodynamic modeling. The southwestern Virginia samples yield a mean apatite fission-track apparent age of 176 {plus minus} 11 Ma, which agrees with the Middle Jurassic apatite fission-track ages to the north.

  6. Diatom distribution as an environmental indicator in surface sediments of the West Philippine Basin

    NASA Astrophysics Data System (ADS)

    Shen, Linnan; Chen, Min; Lan, Binbin; Qi, Hongshuai; Zhang, Aimei; Lan, Dongzhao; Fang, Qi

    2017-03-01

    The distribution of diatoms from surface sediments of the West Philippine Basin was analyzed, with 68 species and varieties of diatoms from 26 genera identified. Diatom abundance varied spatially, with the absolute abundance of diatoms ranging from 0 to 3.4×104 frustules/g. The seven tropical pelagic diatoms were Alveus marinus, Azpeitia africana, Azpeitia nodulifera, Hemidiscus cuneiformis, Hemidiscus cuneiformis var. ventricosus, Roperia tesselata and Rhizosolenia bergonii. The relative abundance of these species was greater than 20%, and their distribution pattern in the sediments was overlaid by the flow of the Kuroshio Current. Ethmodiscus rex was present at 159 stations, formed the most abundant and dominant species in the diatomaceous ooze, and thus referred to as Ethmodiscus ooze. Ethmodiscus rex was also a major contributor to primary production in the region. A principal component analysis was employed to explain the relationship between samples and variations in diatom species from the WPB. Four diatom assemblages were distinguished, representing different oceanographic conditions; their spatial distributions were closely related with the North Equatorial Current and Kuroshio Current patterns in the region. These diatom assemblages can therefore be useful in deciphering late Quaternary palaeoceanographic reconstructions of the West Philippine Basin.

  7. Techniques for simulating flood hydrographs and estimating flood volumes for ungaged basins in east and west Tennessee

    USGS Publications Warehouse

    Gamble, C.R.

    1989-01-01

    A dimensionless hydrograph developed for a variety of basin conditions in Georgia was tested for its applicability to streams in East and West Tennessee by comparing it to a similar dimensionless hydrograph developed for streams in East and West Tennessee. Hydrographs of observed discharge at 83 streams in East Tennessee and 38 in West Tennessee were used in the study. Statistical analyses were performed by comparing simulated (or computed) hydrographs, derived by application of the Georgia dimensionless hydrograph, and dimensionless hydrographs developed from Tennessee data, with the observed hydrographs at 50 and 75% of their peak-flow widths. Results of the tests indicate that the Georgia dimensionless hydrography is virtually the same as the one developed for streams in East Tennessee, but that it is different from the dimensionless hydrograph developed for streams in West Tennessee. Because of the extensive testing of the Georgia dimensionless hydrograph, it was determined to be applicable for East Tennessee, whereas the dimensionless hydrograph developed from data on streams in West Tennessee was determined to be applicable in West Tennessee. As part of the dimensionless hydrograph development, an average lagtime in hours for each study basin, and the volume in inches of flood runoff for each flood event were computed. By use of multiple-regression analysis, equations were developed that relate basin lagtime to drainage area size, basin length, and percent impervious area. Similarly, flood volumes were related to drainage area size, peak discharge, and basin lagtime. These equations, along with the appropriate dimensionless hydrograph, can be used to estimate a typical (average) flood hydrograph and volume for recurrence-intervals up to 100 years at any ungaged site draining less than 50 sq mi in East and West Tennessee. (USGS)

  8. Application of advanced reservoir characterization, simulation and production optimization strategies to maximize recovery in slope and basin clastic reservoirs, West Texas (Delaware Basin). Annual report

    SciTech Connect

    Dutton, S.P.; Asquith, G.B.; Barton, M.D.; Cole, A.G.; Gogas, J.; Malik, M.A.; Clift, S.J.; Guzman, J.I.

    1997-11-01

    The objective of this project is to demonstrate that detailed reservoir characterization of slope and basin clastic reservoirs in sandstones of the Delaware Mountain Group in the Delaware Basin of West Texas and New Mexico is a cost-effective way to recover a higher percentage of the original oil in place through strategic placement of infill wells and geologically based field development. This project involves reservoir characterization of two Late Permian slope and basin clastic reservoirs in the Delaware Basin, West Texas, followed by a field demonstration in one of the fields. The fields being investigated are Geraldine Ford and Ford West fields in Reeves and Culberson Counties, Texas. Project objectives are divided into two major phases, reservoir characterization and implementation. The objectives of the reservoir characterization phase of the project were to provide a detailed understanding of the architecture and heterogeneity of the two fields, the Ford Geraldine unit and Ford West field. Reservoir characterization utilized 3-D seismic data, high-resolution sequence stratigraphy, subsurface field studies, outcrop characterization, and other techniques. Once reservoir characterized was completed, a pilot area of approximately 1 mi{sup 2} at the northern end of the Ford Geraldine unit was chosen for reservoir simulation. This report summarizes the results of the second year of reservoir characterization.

  9. Sugmut field: A forced regression deposit within the Neocomian prograding clinoform complex, West Siberian Basin, Russia

    SciTech Connect

    Armentrout, J.M. ); Oleg, M.; Igirgi, M.

    1996-01-01

    The Volgian-Neocomian interval of the Middle Ob Region of the intracratonic West Siberian Basin consists of between 35 and 45 regional transgressive/regressive cycles infilling a basin which had an average water depth of approximately 200 meters. Within local clinoforms, wells have encountered elongate shelf-edge sandstone bodies ranging from 15 to 100 kilometers in strike-oriented length. In most areas the seismic interval correlative to the reservoir sandstone pinches-out against the foreset of the preceding clinoform. This geometric relationship, and the sharp-based log pattern of sandstones along the more landward margin of the sandstone body, suggests that the sandstone may have been deposited as a consequence of marked downward shift in baselevel as part of a lowstand prograding complex, or possibly as a late highstand forced regression deposit. The Sugmut field, located in the northeast part of the study area, is 12 km wide east-west and 75 km long north-south, and grades laterally into shale to the west, south and east. Relative to the regressive phase isopach, the transgressive phase isopach thick shifts slightly northward and eastward indicating the direction of littoral drift and marginward transgression. In the northern part of the field the shelf-edge sandstone interval may correlate with a thin depositional-dip oriented shelf sandstone mapped within the transgressive interval. This mapped pattern may be interpreted as lowstand incision of a fluvial system supplying sand to a shelf-edge delta followed by infilling of the fluvial valley during transgression. Subsequent down-to-the-north regional tilt resulted in structural closure forming the Sugmut field trap.

  10. Sugmut field: A forced regression deposit within the Neocomian prograding clinoform complex, West Siberian Basin, Russia

    SciTech Connect

    Armentrout, J.M.; Oleg, M.; Igirgi, M.

    1996-12-31

    The Volgian-Neocomian interval of the Middle Ob Region of the intracratonic West Siberian Basin consists of between 35 and 45 regional transgressive/regressive cycles infilling a basin which had an average water depth of approximately 200 meters. Within local clinoforms, wells have encountered elongate shelf-edge sandstone bodies ranging from 15 to 100 kilometers in strike-oriented length. In most areas the seismic interval correlative to the reservoir sandstone pinches-out against the foreset of the preceding clinoform. This geometric relationship, and the sharp-based log pattern of sandstones along the more landward margin of the sandstone body, suggests that the sandstone may have been deposited as a consequence of marked downward shift in baselevel as part of a lowstand prograding complex, or possibly as a late highstand forced regression deposit. The Sugmut field, located in the northeast part of the study area, is 12 km wide east-west and 75 km long north-south, and grades laterally into shale to the west, south and east. Relative to the regressive phase isopach, the transgressive phase isopach thick shifts slightly northward and eastward indicating the direction of littoral drift and marginward transgression. In the northern part of the field the shelf-edge sandstone interval may correlate with a thin depositional-dip oriented shelf sandstone mapped within the transgressive interval. This mapped pattern may be interpreted as lowstand incision of a fluvial system supplying sand to a shelf-edge delta followed by infilling of the fluvial valley during transgression. Subsequent down-to-the-north regional tilt resulted in structural closure forming the Sugmut field trap.

  11. Cenozoic uplift on the West Greenland margin: active sedimentary basins in quiet Archean terranes.

    NASA Astrophysics Data System (ADS)

    Jess, Scott; Stephenson, Randell; Brown, Roderick

    2016-04-01

    The North Atlantic is believed by some authors to have experienced tectonically induced uplift within the Cenozoic. Examination of evidence, onshore and offshore, has been interpreted to imply the presence of kilometre scale uplift across the margins of the Barents Sea, North Sea, Baffin Bay and Greenland Sea. Development of topography on the West Greenland margin (Baffin Bay), in particular, has been subject to much discussion and dispute. A series of low temperature thermochronological (AFT and AHe) studies onshore and interpretation of seismic architecture offshore have suggested uplift of the entire margin totalling ~3km. However, challenges to this work and recent analysis on the opposing margin (Baffin Island) have raised questions about the validity of this interpretation. The present work reviews and remodels the thermochronological data from onshore West Greenland with the aim of re-evaluating our understanding of the margin's history. New concepts within the discipline, such as effect of radiation damage on Helium diffusivity, contemporary modelling approaches and denudational mapping are all utilised to investigate alternative interpretations to this margins complex post rift evolution. In contrast to earlier studies our new approach indicates slow protracted cooling across much of the region; however, reworked sedimentary samples taken from the Cretaceous Nuussuaq Basin display periods of rapid reheating and cooling. These new models suggest the Nuussuaq Basin experienced a tectonically active Cenozoic, while the surrounding Archean basement remained quiet. Faults located within the basin appear to have been reactivated during the Palaeocene and Eocene, a period of well-documented inversion events throughout the North Atlantic, and may have resulted in subaerial kilometre scale uplift. This interpretation of the margin's evolution has wider implications for the treatment of low temperature thermochronological data and the geological history of the North

  12. Geology of oil fields and future exploration potential in west African Aptian Salt basin

    SciTech Connect

    Bignell, R.D.; Edwards, A.D.

    1987-05-01

    The Aptian Salt basin of west Africa, extends from Equatorial Guinea southward to Angola, contains recoverable reserves estimated at nearly 4 billion BOE, and is current producing 600,000 BOPD. The basin developed as a result of tensional forces between west Africa and South America initiated at the end of the Jurassic. The prospective sedimentary sequences ranged in age from Early Cretaceous (uppermost Jurassic in places) to Holocene and is divided by the Aptian transgressive sand and salt into a pre-salt, nonmarine, syn-rift sequence and a post-salt, marine, post-rift sequence. Both the pre- and post-salt sequences contain several successful exploration plays, the most prolific of which are the Early Cretaceous nonmarine sandstone fields in tilted fault blocks of Gabon and Cabinda; Early Cretaceous carbonate buildups on the margins of basement highs in Cabinda; Early Cretaceous transgressive marine sandstone fields in anticlines draped over basement highs in Gabon; Late Cretaceous shallow marine sandstone and carbonate fields in salt-related structures in the Congo, Zaire, Cabinda, and Angola; Late Cretaceous dolomites in structural/stratigraphic traps in Angola; Late Cretaceous/early Tertiary deltaic/estuarine sandstone traps formed by salt movement in Gabon, Cabinda, and angola; and Tertiary marine turbidite fields in Cabinda and Angola. Despite the exploration success in these trends, much of the basin is under or poorly explored. The major problems for exploration are the poor quality of seismic definition beneath the salt, which makes it difficult to predict pre-salt structure and stratigraphy, and the importance of a stratigraphic element in many of the post-salt traps, also difficult to detect on seismic.

  13. Thermal Properties of West Siberian Sediments in Application to Basin and Petroleum Systems Modeling

    NASA Astrophysics Data System (ADS)

    Romushkevich, Raisa; Popov, Evgeny; Popov, Yury; Chekhonin, Evgeny; Myasnikov, Artem; Kazak, Andrey; Belenkaya, Irina; Zagranovskaya, Dzhuliya

    2016-04-01

    Quality of heat flow and rock thermal property data is the crucial question in basin and petroleum system modeling. A number of significant deviations in thermal conductivity values were observed during our integral geothermal study of West Siberian platform reporting that the corrections should be carried out in basin models. The experimental data including thermal anisotropy and heterogeneity measurements were obtained along of more than 15 000 core samples and about 4 500 core plugs. The measurements were performed in 1993-2015 with the optical scanning technique within the Continental Super-Deep Drilling Program (Russia) for scientific super-deep well Tyumenskaya SG-6, parametric super-deep well Yen-Yakhinskaya, and deep well Yarudeyskaya-38 as well as for 13 oil and gas fields in the West Siberia. Variations of the thermal conductivity tensor components in parallel and perpendicular direction to the layer stratification (assessed for 2D anisotropy model of the rock studied), volumetric heat capacity and thermal anisotropy coefficient values and average values of the thermal properties were the subject of statistical analysis for the uppermost deposits aged by: T3-J2 (200-165 Ma); J2-J3 (165-150 Ma); J3 (150-145 Ma); K1 (145-136 Ma); K1 (136-125 Ma); K1-K2 (125-94 Ma); K2-Pg+Ng+Q (94-0 Ma). Uncertainties caused by deviations of thermal conductivity data from its average values were found to be as high as 45 % leading to unexpected errors in the basin heat flow determinations. Also, the essential spatial-temporal variations in the thermal rock properties in the study area is proposed to be taken into account in thermo-hydrodynamic modeling of hydrocarbon recovery with thermal methods. The research work was done with financial support of the Russian Ministry of Education and Science (unique identification number RFMEFI58114X0008).

  14. Cleanup Verification Package for the 118-F-8:4 Fuel Storage Basin West Side Adjacent and Side Slope Soils

    SciTech Connect

    L. D. Habel

    2008-03-18

    This cleanup verification package documents completion of remedial action, sampling activities, and compliance with cleanup criteria for the 118-F-8:4 Fuel Storage Basin West Side Adjacent and Side Slope Soils. The rectangular-shaped concrete basin on the south side of the 105-F Reactor building served as an underwater collection, storage, and transfer facility for irradiated fuel elements discharged from the reactor.

  15. Dissolution of evaporites in and around the Delaware Basin, southeastern New Mexico and west Texas

    SciTech Connect

    Lambert, S.J.

    1983-03-01

    permian evaporites in the Ochoan Castile, Salado, and Rustler Formations in the Delaware Basin of southeast New Mexico and west Texas have been subjected to various degrees of dissolution (notably of halite and gypsum) through geologic time. Eastward tilting of the Delaware Basin has resulted in the exhumation and erosion of Ochoan rocks in the western part of the basin. Waters in the Capitan, Rustler, Castile, and Bell Canyon Formations have previously been proposed as agents or consequences of evaporite dissolution according to four principal models: solution-and-fill, phreatic dissolution, brine density flow, and stratabound dissolutin (along bedding planes). Several geomorphological features of positive and negative relief have previously been cited as indicators of evaporite dissolution. Brine density flow has been used to explain the selective dissolution of certain evaporite horizons during the late Cenozoic. A review of available geological data has revealed that: Halite deposition was probably not so extensive as formerly believed. Waters with potential to dissolve evaporites are in the Rustler and Capitan, but not in the Bell Canyon, Salado mine seeps, or the Castile brine reservoirs. Brine density flow has not been active in removing most of the missing halite, nor are point-source dissolution features likely to have their roots at the Bell Canyon. Major evaporite dissolution has not been confined to the late Cenozoic, but much of it took place during the Permian, Triassic, Jurassic, and Tertiary periods. The Bell Canyon Formation has been a sink for dissolution-derived brine.

  16. Influence of Transcontinental arch on Cretaceous listric-normal faulting, west flank, Denver basin

    SciTech Connect

    Davis, T.L.

    1983-08-01

    Seismic studies along the west flank of the Denver basin near Boulder and Greeley, Colorado illustrate the interrelationship between shallow listric-normal faulting in the Cretaceous and deeper basement-controlled faulting. Deeper fault systems, primarily associated with the Transcontinental arch, control the styles and causative mechanisms of listric-normal faulting that developed in the Cretaceous. Three major stratigraphic levels of listric-normal faulting occur in the Boulder-Greeley area. These tectonic sensitive intervals are present in the following Cretaceous formations: Laramie-Fox Hills-upper Pierre, middle Pierre Hygiene zone, and the Niobrara-Carlile-Greenhorn. Documentation of the listric-normal fault style reveals a Wattenberg high, a horst block or positive feature of the greater Transcontinental arch, was active in the east Boulder-Greeley area during Cretaceous time. Paleotectonic events associated with the Wattenberg high are traced through analysis of the listric-normal fault systems that occur in the area. These styles are important to recognize because of their stratigraphic and structural influence on Cretaceous petroleum reservoir systems in the Denver basin. Similar styles of listric-normal faulting occur in the Cretaceous in many Rocky Mountain foreland basins.

  17. Permian-triassic paleogeography and stratigraphy of the west Netherlands basin

    SciTech Connect

    Speksnijder, A. )

    1993-09-01

    During the Permian, the present West Netherlands basin (WNB) was situated at the southernmost margin of the southern Permian basin (SPB). The thickness of Rotilegende sandstones therefore is very much reduced in the WNB. The relatively thin deposits of the Fringe Zechstein in the WNB, however, also contrast strongly in sedimentary facies with thick evaporite/carbonate alternations in the main SPB to the north, although the classic cyclicity of Zechstein deposition still can be recognized. The Fringe Zechstein sediments are mainly siliciclastic and interfinger with both carbonates and anhydrites toward the evaporite basin. End members are thin clay layers that constitute potential seals to underlying Rotliegende reservoirs and relatively thick sandstones (over 100 m net sand) in the western part of the WNB. Nevertheless, favorable reservoir/seal configurations in the Fringe Zechstein seem to be sparse because only minor hydrocarbon occurrences have been proven in the area to date. The situation is dramatically different for the Triassic in the WNB. The [open quotes]Bunter[close quotes] gas play comprises thick Fringe Buntsandstein sandstones (up to 250 m), vertically sealed by carbonates and anhydritic clays of the Muschelkalk and Keuper formations. The Bunter sandstones are largely of the same age as the classic Volpriehausen, Detfurth, and Hardegsen alluvial sand/shale alternations recognized elsewhere, but the upper onlapping transgressive sands and silts correlate with evaporitic clays of the Roet basin to the north. A total volume of 65 x 10[sup 9]m[sup 3] of gas has so far been found in the Triassic Bunter sandstones of the WNB.

  18. Evolution of Mesozoic fluvial systems along the SE flank of the West Siberian Basin, Russia

    NASA Astrophysics Data System (ADS)

    Le Heron, Daniel Paul; Buslov, Micha M.; Davies, Clare; Richards, Keith; Safonova, Inna

    2008-07-01

    The Mesozoic stratigraphy in the subsurface of the West Siberian Basin contains prolific hydrocarbon accumulations, and thus the depositional environments of marine and marginal marine Jurassic and Cretaceous age sediments are well-established. However, no information is currently available on strata of equivalent age that crop out along the SE basin margin in the Mariinsk-Krasnoyarsk region, despite the potential of these exposures to supply important information on the sediment supply routes into the main basin. Detailed sedimentological analysis of Jurassic-Cretaceous clastic sediments, in conjunction with palaeo-botanical data, reveals five facies associations that reflect deposition in a range of continental environments. These include sediments that were deposited in braided river systems, which were best developed in the Early Jurassic. These early river systems infilled the relics of a topography that was possibly inherited from earlier Triassic rifting. More mature fluvial land systems evolved in the Mid to Late Jurassic. By the Mid Jurassic, well-defined overbank areas had become established, channel abandonment was commonplace, and mudrocks were deposited on floodplains. Coal deposition occurred in mires, which were subject to periodic incursions by crevasse splay processes. Cretaceous sedimentation saw a renewed influx of sand-grade sediment into the region. It is proposed that landscape evolution throughout the Jurassic was driven simply by peneplanation rather than tectonic processes. By contrast, the influx of sandstones in the Cretaceous is tentatively linked to hinterland rejuvenation/ tectonic uplift, possibly coeval with the growth of large deltaic clinoform complexes of the Neocomian in the basin subsurface.

  19. Pulsed growth of the West Qinling at 30 Ma in northeastern Tibet: Evidence from Lanzhou Basin magnetostratigraphy and provenance

    NASA Astrophysics Data System (ADS)

    Wang, Weitao; Zhang, Peizhen; Liu, Caicai; Zheng, Dewen; Yu, Jingxing; Zheng, Wenjun; Wang, Yizhou; Zhang, Huiping; Chen, Xiuyan

    2016-11-01

    The development of Cenozoic basins in the northeast margin of the Tibetan Plateau is central to understanding the dynamics of plateau growth. Here we present a magnetostratigraphy from the Lanzhou Basin, dating the terrestrial deposits from the Eocene ( 47 Ma) to the middle Miocene ( 15 Ma). The stratigraphic observation, palocurrent, and sediment provenance analysis suggest that the Lanzhou Basin (subbasin of the Longzhong Basin) probably initiated as a topographically enclosed depression during Eocene to early Oligocene ( 47-30 Ma). We suspect that right-lateral transtensional deformation inherited from the Cretaceous may result in formation of the Lanzhou Basin at the Eocene. Subsequently, changes in paleocurrent, sandstone and conglomerate compositions and detrital zircon provenance reflect the pulsed growth of the West Qinling at 30 Ma, which triggered not only the formation of new flexural subsidence to the north of the West Qinling, but also renewed subsidence of Lanzhou Basin into the broad foreland basin system. We compare this growth history with major NE Tibet deformation and suggest that it may result from northeastward extrusion of the Tibetan Plateau due to the onset of Altyn Tagh Fault activity at Oligocene.

  20. Hydrogeology and water quality of the West Valley Creek Basin, Chester County, Pennsylvania

    USGS Publications Warehouse

    Senior, L.A.; Sloto, R.A.; Reif, A.G.

    1997-01-01

    The West Valley Creek Basin drains 20.9 square miles in the Piedmont Physiographic Province of southeastern Pennsylvania and is partly underlain by carbonate rocks that are highly productive aquifers. The basin is undergoing rapid urbanization that includes changes in land use and increases in demand for public water supply and wastewater disposal. Ground water is the sole source of supply in the basin. West Valley Creek flows southwest in a 1.5-mile-wide valley that is underlain by folded and faulted carbonate rocks and trends east-northeast, parallel to regional geologic structures. The valley is flanked by hills underlain by quartzite and gneiss to the north and by phyllite and schist to the south. Surface water and ground water flow from the hills toward the center of the valley. Ground water in the valley flows west-southwest parallel to the course of the stream. Seepage investigations identified losing reaches in the headwaters area where streams are underlain by carbonate rocks and gaining reaches downstream. Tributaries contribute about 75 percent of streamflow. The ground-water and surface-water divides do not coincide in the carbonate valley. The ground-water divide is about 0.5 miles west of the surface-water divide at the eastern edge of the carbonate valley. Underflow to the east is about 1.1 inches per year. Quarry dewatering operations at the western edge of the valley may act partly as an artificial basin boundary, preventing underflow to the west. Water budgets for 1990, a year of normal precipitation (45.8 inches), and 1991, a year of sub-normal precipitation (41.5 inches), were calculated. Streamflow was 14.61 inches in 1990 and 12.08 inches in 1991. Evapotranspiration was estimated to range from 50 to 60 percent of precipitation. Base flow was about 62 percent of streamflow in both years. Exportation by sewer systems was about 3 inches from the basin and, at times, equaled base flow during the dry autumn of 1991. Recharge was estimated to be 18

  1. Physical characteristics of stream subbasins in the Chippewa River basin, west-central Minnesota

    USGS Publications Warehouse

    Sanocki, C.A.; Krumrie, J.R.

    1994-01-01

    Data that describe the physical characteristics of stream subbasins upstream from selected points on streams in the Chippewa River Basin, located in west-central Minnesota, are presented in this report The physical characteristics are the drainage area of the subbasin, the percentage area of the subbasin covered only by lakes, the percentage area of the subbasin covered by both lakes and wetlands, the main-channel length, and the main-channel slope. The points on the stream include outlets of subbasins of at least 5 square miles, outlets of sewage treatment plants, and locations of U.S. Geological Survey low-flow, high-flow, and continuous-record gaging stations.

  2. Physical characteristics of stream subbasins in the Pomme de Terre River Basin, west-central Minnesota

    USGS Publications Warehouse

    Lorenz, D.L.; Payne, G.A.

    1994-01-01

    Data describing the physical characteristics of stream subbasins upstream from selected points on streams in the Pomme de Terre River Basin, located in west-central Minnesota, are presented in this report. The physical characteristics are the drainage area of the subbasin, the percentage area of the subbasin covered only by lakes, the percentage area of the subbasin covered by both lakes and wetlands, the main-channel length, and the main-channel slope. The points on the stream include outlets of subbasins of at least 5 square miles, outfalls of sewage treatment plants, and locations of U.S. Geological Survey low-flow, high-flow, and continuous-record gaging stations.

  3. Marine ice sheet collapse potentially under way for the Thwaites Glacier Basin, West Antarctica.

    PubMed

    Joughin, Ian; Smith, Benjamin E; Medley, Brooke

    2014-05-16

    Resting atop a deep marine basin, the West Antarctic Ice Sheet has long been considered prone to instability. Using a numerical model, we investigated the sensitivity of Thwaites Glacier to ocean melt and whether its unstable retreat is already under way. Our model reproduces observed losses when forced with ocean melt comparable to estimates. Simulated losses are moderate (<0.25 mm per year at sea level) over the 21st century but generally increase thereafter. Except possibly for the lowest-melt scenario, the simulations indicate that early-stage collapse has begun. Less certain is the time scale, with the onset of rapid (>1 mm per year of sea-level rise) collapse in the different simulations within the range of 200 to 900 years.

  4. Surface deformation on the west portion of the Chapala lake basin: uncertainties and facts

    NASA Astrophysics Data System (ADS)

    Hernandez-Marin, M.; Pacheco-Martinez, J.; Ortiz-Lozano, J. A.; Araiza-Garaygordobil, G.; Ramirez-Cortes, A.

    2015-11-01

    In this study we investigate different aspects of land subsidence and ground failures occurring in the west portion of Chapala lake basin. Currently, surface discontinuities seem to be associated with subsiding bowls. In an effort to understand some of the conditioning factors to surface deformation, two sounding cores from the upper sequence (11 m depth) were extracted for analyzing physical and mechanical properties. The upper subsoil showed a predominant silty composition and several lenses of pumice pyroclastic sand. Despite the relative predominance of fine soil, the subsoil shows mechanical properties with low clay content, variable water content, low plasticity and variable compressibility index, amongst some others. Some of these properties seem to be influenced by the sandy pyroclastic lenses, therefore, a potential source of the ground failure could be heterogeneities in the upper soil.

  5. Palaeosol Control of Arsenic Pollution: The Bengal Basin in West Bengal, India.

    PubMed

    Ghosal, U; Sikdar, P K; McArthur, J M

    2015-01-01

    Groundwater in the Bengal Basin is badly polluted by arsenic (As) which adversely affects human health. To provide low-As groundwater for As mitigation, it was sought across 235 km(2) of central West Bengal, in the western part of the basin. By drilling 76 boreholes and chemical analysis of 535 water wells, groundwater with <10 µg/L As in shallow aquifers was found under one-third of a study area. The groundwater is in late Pleistocene palaeo-interfluvial aquifers of weathered brown sand that are capped by a palaeosol of red clay. The aquifers form two N-S trending lineaments that are bounded on the east by an As-polluted deep palaeo-channel aquifer and separated by a shallower palaeo-channel aquifer. The depth to the top of the palaeo-interfluvial aquifers is mostly between 35 and 38 m below ground level (mbgl). The palaeo-interfluvial aquifers are overlain by shallow palaeo-channel aquifers of gray sand in which groundwater is usually As-polluted. The palaeosol now protects the palaeo-interfluvial aquifers from downward migration of As-polluted groundwater in overlying shallow palaeo-channel aquifers. The depth to the palaeo-interfluvial aquifers of 35 to 38 mbgl makes the cost of their exploitation affordable to most of the rural poor of West Bengal, who can install a well cheaply to depths up to 60 mbgl. The protection against pollution afforded by the palaeosol means that the palaeo-interfluvial aquifers will provide a long-term source of low-As groundwater to mitigate As pollution of groundwater in the shallower, heavily used, palaeo-channel aquifers. This option for mitigation is cheap to employ and instantly available.

  6. Basement configuration of the West Bengal sedimentary basin, India as revealed by seismic refraction tomography: its tectonic implications

    NASA Astrophysics Data System (ADS)

    Damodara, N.; Rao, V. Vijaya; Sain, Kalachand; Prasad, A. S. S. S. R. S.; Murty, A. S. N.

    2017-03-01

    Understanding the sedimentary thickness, structure and tectonics of the West Bengal basin is attempted using pseudo 3-D configuration derived from the first arrival seismic refraction data. Velocity images of the West Bengal basin are derived using traveltime tomography along four profiles. The models are assessed for their reliability through chi-squares estimates, rms residual, traveltime fit, rays traced through the models and resolution by checkerboard tests. Tomographic images depict smooth velocity variations of Recent, Quaternary and Tertiary sediments of velocity 1.8-4.3 km s-1 deposited over the Rajmahal trap of 4.8 km s-1 velocity and the basement (5.9 km s-1) down to a maximum depth of 16 km. The present study indicates a south-easterly dip of basin as evidenced from the pseudo 3-D configuration. The basement depth along the seismic profiles varies from 1 to 16 km depending on its location in the basin. It is shallow in the north & west and deep in the east & south. The depth of the basement on the stable shelf of the basin in the west gently increases to about 8 km and dips to a maximum depth of 16 km in the deep basin part within a short distance in the east. The study identifies a regional feature, known as the Shelf break or the Hinge zone, where stable Indian shield ends and a sharp increase in sediment thickness occurs. The Hinge zone may represent the relict of continental and proto-oceanic crustal boundary formed during the rifting of India from Antarctica. The regional gravity map of the Bengal basin prepared in this study clearly brings out the Hinge zone with a linear gravity high that is compatible with seismic data. Presence of Shelf break/Hinge zone and Rajmahal volcanism in the basin suggests the influence of rifting of India from the combined Antarctica-Australia at ˜130 Ma due to mantle plume activity on the structure and tectonics of the West Bengal basin. These features along with the elevated rift shoulder are in agreement with the

  7. Basement configuration of the West Bengal sedimentary basin, India as revealed by seismic refraction tomography: its tectonic implications

    NASA Astrophysics Data System (ADS)

    Damodara, N.; Rao, V. Vijaya; Sain, Kalachand; Prasad, Asssrs; Murty, Asn

    2017-01-01

    SUMMARYUnderstanding the sedimentary thickness, structure and tectonics of the <span class="hlt">West</span> Bengal <span class="hlt">basin</span> is attempted using pseudo 3-D configuration derived from the first arrival seismic refraction data. Velocity images of the <span class="hlt">West</span> Bengal <span class="hlt">basin</span> are derived using traveltime tomography along four profiles. The models are assessed for their reliability through chi-squares estimates, rms residual, traveltime fit, rays traced through the models, and resolution by checkerboard tests. Tomographic images depict smooth velocity variations of Recent, Quaternary and Tertiary sediments of velocity 1.8-4.3 km/s deposited over the Rajmahal trap of 4.8 km/s velocity and the basement (5.9 km/s) down to a maximum depth of 16 km. The present study indicates a south-easterly dip of <span class="hlt">basin</span> as evidenced from the pseudo 3-D configuration. The basement depth along the seismic profiles varies from 1 km to 16 km depending on its location in the <span class="hlt">basin</span>. It is shallow in the north & <span class="hlt">west</span> and deep in the east & south. The depth of the basement on the stable shelf of the <span class="hlt">basin</span> in the <span class="hlt">west</span> gently increases to about 8 km and dips to a maximum depth of 16 km in the deep <span class="hlt">basin</span> part within a short distance in the east. The study identifies a regional feature, known as the Shelf break or the Hinge zone, where stable Indian shield ends and a sharp increase in sediment thickness occurs. The Hinge zone may represent the relict of continental and proto-oceanic crustal boundary formed during the rifting of India from Antarctica. The regional gravity map of the Bengal <span class="hlt">basin</span> prepared in this study clearly brings out the Hinge zone with a linear gravity high that is compatible with seismic data. Presence of Shelf break / Hinge zone and Rajmahal volcanism in the <span class="hlt">basin</span> suggests the influence of rifting of India from the combined Antarctica-Australia at ˜130 Ma due to mantle plume activity on the structure and tectonics of the <span class="hlt">West</span> Bengal <span class="hlt">basin</span>. These features along with the elevated rift shoulder are in</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2016NatCC...6...71M','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2016NatCC...6...71M"><span>Linear sea-level response to abrupt ocean warming of major <span class="hlt">West</span> Antarctic ice <span class="hlt">basin</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Mengel, M.; Feldmann, J.; Levermann, A.</p> <p>2016-01-01</p> <p>Antarctica's contribution to global sea-level rise has recently been increasing. Whether its ice discharge will become unstable and decouple from anthropogenic forcing or increase linearly with the warming of the surrounding ocean is of fundamental importance. Under unabated greenhouse-gas emissions, ocean models indicate an abrupt intrusion of warm circumpolar deep water into the cavity below <span class="hlt">West</span> Antarctica's Filchner-Ronne ice shelf within the next two centuries. The ice <span class="hlt">basin</span>'s retrograde bed slope would allow for an unstable ice-sheet retreat, but the buttressing of the large ice shelf and the narrow glacier troughs tend to inhibit such instability. It is unclear whether future ice loss will be dominated by ice instability or anthropogenic forcing. Here we show in regional and continental-scale ice-sheet simulations, which are capable of resolving unstable grounding-line retreat, that the sea-level response of the Filchner-Ronne ice <span class="hlt">basin</span> is not dominated by ice instability and follows the strength of the forcing quasi-linearly. We find that the ice loss reduces after each pulse of projected warm water intrusion. The long-term sea-level contribution is approximately proportional to the total shelf-ice melt. Although the local instabilities might dominate the ice loss for weak oceanic warming, we find that the upper limit of ice discharge from the region is determined by the forcing and not by the marine ice-sheet instability.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2008PCE....33..141A','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2008PCE....33..141A"><span>Monthly streamflow prediction in the Volta <span class="hlt">Basin</span> of <span class="hlt">West</span> Africa: A SISO NARMAX polynomial modelling</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Amisigo, B. A.; van de Giesen, N.; Rogers, C.; Andah, W. E. I.; Friesen, J.</p> <p></p> <p>Single-input-single-output (SISO) non-linear system identification techniques were employed to model monthly catchment runoff at selected gauging sites in the Volta <span class="hlt">Basin</span> of <span class="hlt">West</span> Africa. NARMAX (Non-linear Autoregressive Moving Average with eXogenous Input) polynomial models were fitted to <span class="hlt">basin</span> monthly rainfall and gauging station runoff data for each of the selected sites and used to predict monthly runoff at the sites. An error reduction ratio (ERR) algorithm was used to order regressors for various combinations of input, output and noise lags (various model structures) and the significant regressors for each model selected by applying an Akaike Information Criterion (AIC) to independent rainfall-runoff validation series. Model parameters were estimated from the Matlab REGRESS function (an orthogonal least squares method). In each case, the sub-model without noise terms was fitted first followed by a fitting of the noise model. The coefficient of determination ( R-squared), the Nash-Sutcliffe Efficiency criterion (NSE) and the F statistic for the estimation (training) series were used to evaluate the significance of fit of each model to this series while model selection from the range of models fitted for each gauging site was done by examining the NSEs and the AICs of the validation series. Monthly runoff predictions from the selected models were very good, and the polynomial models appeared to have captured a good part of the rainfall-runoff non-linearity. The results indicate that the NARMAX modelling framework is suitable for monthly river runoff prediction in the Volta <span class="hlt">Basin</span>. The several good models made available by the NARMAX modelling framework could be useful in the selection of model structures that also provide insights into the physical behaviour of the catchment rainfall-runoff system.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/1999HyPr...13.1989B','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/1999HyPr...13.1989B"><span>Snowmelt and runoff modelling of an Arctic hydrological <span class="hlt">basin</span> in <span class="hlt">west</span> Greenland</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Bøggild, C. E.; Knudby, C. J.; Knudsen, M. B.; Starzer, W.</p> <p>1999-09-01</p> <p>This paper compares the performance of a conceptual modelling system and several physically-based models for predicting runoff in a large hydrological <span class="hlt">basin</span>, Tasersuaq, in <span class="hlt">west</span> Greenland. This <span class="hlt">basin</span>, which is typical of many Greenland <span class="hlt">basins</span>, is interesting because of the fast hydrological response to changing conditions. Due to the predominance of exposed bedrock surface and only minor occurrence of sediments and organic soils, there is little restraint to run-off, making the treatment of the snowmelt component of primary importance.Presently a conceptual modelling system, HBV, is applied in Greenland and also in most of the arctic regions of Scandinavia for operational forecasting. A general wish to use hydrological models for other purposes, such as to improve data collection and to gain insight into the hydrological processes has promoted interest in the more physically-based hydrological models. In this paper, two degree-day models, the Danish version of the physically-based SHE distributed hydrological modelling system (MIKE SHE) and the conceptual HBV model are compared with a new model that links MIKE SHE and a distributed energy balance model developed for this study, APUT.The HBV model performs the best overall simulation of discharge, which presently makes it most suited for general forecasting. The combination of MIKE SHE and APUT i.e. a physically based modelling system shows promising results by improving the timing of the initiation of spring flood, but does not perform as well throughout the remaining part of the snowmelt season. The modelling study shows that local parameters such as the snow depletion curve, the temporal snow albedo and perhaps also melt water storage need to be more precisely determined from field studies before physically-based modelling can be improved.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/789251','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/789251"><span>Application of Advanced Reservoir Characterization, Simulation, and Production Optimization Strategies to Maximize Recovery in Slope and <span class="hlt">Basin</span> Clastic Reservoirs, <span class="hlt">West</span> Texas (Delaware <span class="hlt">Basin</span>), Class III</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Dutton, Shirley P.; Flanders, William A.</p> <p>2001-11-04</p> <p>The objective of this Class III project was demonstrate that reservoir characterization and enhanced oil recovery (EOR) by CO2 flood can increase production from slope and <span class="hlt">basin</span> clastic reservoirs in sandstones of the Delaware Mountain Group in the Delaware <span class="hlt">Basin</span> of <span class="hlt">West</span> Texas and New Mexico. Phase 1 of the project, reservoir characterization, focused on Geraldine Ford and East Ford fields, which are Delaware Mountain Group fields that produce from the upper Bell Canyon Formation (Ramsey sandstone). The demonstration phase of the project was a CO2 flood conducted in East Ford field, which is operated by Orla Petco, Inc., as the East Ford unit.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/780435','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/780435"><span>Application of Advanced Reservoir Characterization, Simulation, and Production Optimization Strategies to Maximize Recovery in Slope and <span class="hlt">Basin</span> Clastic Reservoirs, <span class="hlt">West</span> Texas (Delaware <span class="hlt">Basin</span>), Class III</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Dutton, Shirley P.; Flanders, William A.; Mendez, Daniel L.</p> <p>2001-05-08</p> <p>The objective of this Class 3 project was demonstrate that detailed reservoir characterization of slope and <span class="hlt">basin</span> clastic reservoirs in sandstone's of the Delaware Mountain Group in the Delaware <span class="hlt">Basin</span> of <span class="hlt">West</span> Texas and New Mexico is a cost effective way to recover oil more economically through geologically based field development. This project was focused on East Ford field, a Delaware Mountain Group field that produced from the upper Bell Canyon Formation (Ramsey sandstone). The field, discovered in 9160, is operated by Oral Petco, Inc., as the East Ford unit. A CO2 flood was being conducted in the unit, and this flood is the Phase 2 demonstration for the project.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/sir/2009/5155/','USGSPUBS'); return false;" href="https://pubs.usgs.gov/sir/2009/5155/"><span>Hydrologic Setting and Conceptual Hydrologic Model of the Walker River <span class="hlt">Basin</span>, <span class="hlt">West</span>-Central Nevada</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Lopes, Thomas J.; Allander, Kip K.</p> <p>2009-01-01</p> <p>The Walker River is the main source of inflow to Walker Lake, a closed-<span class="hlt">basin</span> lake in <span class="hlt">west</span>-central Nevada. Between 1882 and 2008, agricultural diversions resulted in a lake-level decline of more than 150 feet and storage loss of 7,400,000 acre-ft. Evaporative concentration increased dissolved solids from 2,500 to 17,000 milligrams per liter. The increase in salinity threatens the survival of the Lahontan cutthroat trout, a native species listed as threatened under the Endangered Species Act. This report describes the hydrologic setting of the Walker River <span class="hlt">basin</span> and a conceptual hydrologic model of the relations among streams, groundwater, and Walker Lake with emphasis on the lower Walker River <span class="hlt">basin</span> from Wabuska to Hawthorne, Nevada. The Walker River <span class="hlt">basin</span> is about 3,950 square miles and straddles the California-Nevada border. Most streamflow originates as snowmelt in the Sierra Nevada. Spring runoff from the Sierra Nevada typically reaches its peak during late May to early June with as much as 2,800 cubic feet per second in the Walker River near Wabuska. Typically, 3 to 4 consecutive years of below average streamflow are followed by 1 or 2 years of average or above average streamflow. Mountain ranges are comprised of consolidated rocks with low hydraulic conductivities, but consolidated rocks transmit water where fractured. Unconsolidated sediments include fluvial deposits along the active channel of the Walker River, valley floors, alluvial slopes, and a playa. Sand and gravel deposited by the Walker River likely are discontinuous strata throughout the valley floor. Thick clay strata likely were deposited in Pleistocene Lake Lahontan and are horizontally continuous, except where strata have been eroded by the Walker River. At Walker Lake, sediments mostly are clay interbedded with alluvial slope, fluvial, and deltaic deposits along the lake margins. Coarse sediments form a multilayered, confined-aquifer system that could extend several miles from the shoreline</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70036376','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70036376"><span>Sedimentary response to orogenic exhumation in the northern rocky mountain <span class="hlt">basin</span> and range province, flint creek <span class="hlt">basin</span>, <span class="hlt">west</span>-central Montana</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Portner, R.A.; Hendrix, M.S.; Stalker, J.C.; Miggins, D.P.; Sheriff, S.D.</p> <p>2011-01-01</p> <p>Middle Eocene through Upper Miocene sedimentary and volcanic rocks of the Flint Creek <span class="hlt">basin</span> in western Montana accumulated during a period of significant paleoclimatic change and extension across the northern Rocky Mountain <span class="hlt">Basin</span> and Range province. Gravity modelling, borehole data, and geologic mapping from the Flint Creek <span class="hlt">basin</span> indicate that subsidence was focused along an extensionally reactivated Sevier thrust fault, which accommodated up to 800 m of <span class="hlt">basin</span> fill while relaying stress between the dextral transtensional Lewis and Clark lineament to the north and the Anaconda core complex to the south. Northwesterly paleocurrent indicators, foliated metamorphic lithics, 64 Ma (40Ar/39Ar) muscovite grains, and 76 Ma (U-Pb) zircons in a ca. 27 Ma arkosic sandstone are consistent with Oligocene exhumation and erosion of the Anaconda core complex. The core complex and volcanic and magmatic rocks in its hangingwall created an important drainage divide during the Paleogene shedding detritus to the NNW and ESE. Following a major period of Early Miocene tectonism and erosion, regional drainage networks were reorganized such that paleoflow in the Flint Creek <span class="hlt">basin</span> flowed east into an internally drained saline lake system. Renewed tectonism during Middle to Late Miocene time reestablished a <span class="hlt">west</span>-directed drainage that is recorded by fluvial strata within a Late Miocene paleovalley. These tectonic reorganizations and associated drainage divide explain observed discrepancies in provenance studies across the province. Regional correlation of unconformities and lithofacies mapping in the Flint Creek <span class="hlt">basin</span> suggest that localized tectonism and relative base level fluctuations controlled lithostratigraphic architecture.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2004AGUFM.H53C1274B','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2004AGUFM.H53C1274B"><span><span class="hlt">Basin</span> Hydrology and Substrate Controls on Mountain Stream Morphology: Highlands of Southeastern <span class="hlt">West</span> Virginia</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Burks, T. W.; Springer, G. S.</p> <p>2004-12-01</p> <p>Evolution of mountain drainage <span class="hlt">basins</span> across a broad spectrum of geologic, tectonic, and climatic conditions is an active area of investigation in the field of fluvial geomorphology. Mountain streams are typified by steep channel gradients (>0.002), high channel roughness, rapid changes in drainage area, and high spatial and low temporal variability in channel morphology, leading to complexities in landscape modeling relative to their lowland counterparts. Factors driving this recent investigative trend are the refinement and generation of digital topographic data and terrain analysis software, and more importantly, the demand for a multidiscipline approach to the assessment, restoration, and management of entire watersheds. A significant volume of research has been conducted in mountain drainage <span class="hlt">basins</span> of the western United States, with particular attention paid to tectonically active regions of the Pacific Northwest, which also contain federally listed threatened and endangered salmonid populations. Brook trout (Salvelinus fontinalis), native to the highlands of the eastern margin of the Appalachian Plateau are impacted by acid rain deposition; however, geomorphic research into landscape modeling, applicable to restoration and management of lotic ecosystems of the eastern United States, is comparatively lacking. This current research explores the potential for modeling channel morphology in mountain streams; specifically, how downstream trends in channel substrate resistance and unit stream power effect the partitioning of mountain stream morphology along and downstream of the fluvial/colluvial transition. In order to address this issue, two mountain drainage <span class="hlt">basins</span> in the headwaters of the Gauley River watershed on the Appalachian Plateau of southeastern <span class="hlt">West</span> Virginia were chosen. The westerly flowing Cranberry (250 sqkm) and Cherry (429 sqkm) rivers incise gently northwestward dipping Carboniferous-aged strata (shale, minor coal, siltstone, sandstone, and</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/6921361','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/6921361"><span>Reservoir geology and paleoenvironmental reconstruction of Yates Formation, Central <span class="hlt">Basin</span> Platform, <span class="hlt">West</span> Texas</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Casavant, R.R.</p> <p>1988-01-01</p> <p>Computer slice maps and proprietary three-dimensional interactive graphics were used to reconstruct the paleodeposition and to map reservoir variations within the Yates Formation of <span class="hlt">west</span> Texas. The prolific Yates Formation is a major reservoir in the North Ward Estes field, Ward County, Texas. The Upper Permian (Guadalupian) Yates Formation is an overall regressive shallowing-upward package containing variable sequences of subtidal, intertidal, and supratidal strata. Sediment types include various siliciclastics mixed with sabkha-type carbonates and evaporites. The types of rocks and their structures indicate that these sediments were deposited in a prograding tidal flat-lagoonal setting located behind a shelf margin edge on the western flank of the positive Central <span class="hlt">Basin</span> platform during the Guadalupian. The cyclic nature of the Yates is largely the result of lagoonal expansion and construction that caused environmental belts on both sides of the lagoon to converge and diverge. These rapid migrations of facies coupled with diagenetic processes created the heterogeneities that characterize this large reservoir.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/10162486','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/10162486"><span><span class="hlt">West</span> Siberian <span class="hlt">basin</span> hydrogeology - regional framework for contaminant migration from injected wastes</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Foley, M.G.</p> <p>1994-05-01</p> <p>Nuclear fuel cycle activities of the former Soviet Union (FSU) have resulted in massive contamination of the environment in western Siberia. We are developing three-dimensional numerical models of the hydrogeology and potential contaminant migration in the <span class="hlt">West</span> Siberian <span class="hlt">Basin</span>. Our long-term goal at Pacific Northwest Laboratory is to help determine future environmental and human impacts given the releases that have occurred to date and the current waste management practices. In FY 1993, our objectives were to (1) refine and implement the hydrogeologic conceptual models of the regional hydrogeology of western Siberia developed in FY 1992 and develop the detailed, spatially registered digital geologic and hydrologic databases to test them, (2) calibrate the computer implementation of the conceptual models developed in FY 1992, and (3) develop general geologic and hydrologic information and preliminary hydrogeologic conceptual models relevant to the more detailed models of contaminated site hydrogeology. Calibration studies of the regional hydrogeologic computer model suggest that most precipitation entering the ground-water system moves in the near-surface part of the system and discharges to surface waters relatively near its point of infiltration. This means that wastes discharged to the surface and near-surface may not be isolated as well as previously thought, since the wastes may be carried to the surface by gradually rising ground waters.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2017IJEaS.tmp...19Y','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2017IJEaS.tmp...19Y"><span>Provenance evolution of the Jurassic northern Qaidam <span class="hlt">Basin</span> (<span class="hlt">West</span> China) and its geological implications: evidence from detrital zircon geochronology</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Yu, Long; Xiao, Ancheng; Wu, Lei; Tian, Yuntao; Rittner, Martin; Lou, Qianqian; Pan, Xiaotian</p> <p>2017-03-01</p> <p>The Jurassic system is the major hydrocarbon source rock and of crucial importance for understanding the Mesozoic intra-continental tectonics in <span class="hlt">West</span> China. This paper presents systematic detrital zircon geochronology of the Jurassic outcropping at the Dameigou locality in the northern Qaidam <span class="hlt">Basin</span>, and reports 1000 single-grain U-Pb zircon ages that have implications for the provenance, the corresponding <span class="hlt">basin</span> property as well as the tectonic setting of <span class="hlt">West</span> China during Jurassic. Zircon ages exhibit two major clusters at 250 and 2400 Ma whereas two minor clusters at 450 and 850 Ma, suggesting primary sources from the East Kunlun Shan and Oulongbuluke Block, secondary sources from the North Qaidam UHP belt and South Qilian Shan. Combined with observation of lithology and sedimentary facies, two rifting periods were inferred in the earliest Jurassic and the early stage of the Middle Jurassic, respectively, accompanied by further extension throughout the Jurassic. Our results do not support a foreland <span class="hlt">basin</span> related to the Jurassic southward thrusting of the South Qilian Shan, but favor that the Mesozoic intra-continental tectonics in <span class="hlt">West</span> China were characterised by pulsed responses to specific collisions rather than a persisting contractional setting during Jurassic period.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2009EGUGA..11.1438K','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2009EGUGA..11.1438K"><span>Variety, State and Origin of Drained Thaw Lake <span class="hlt">Basins</span> in <span class="hlt">West</span>-Siberian North</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Kirpotin, S.; Polishchuk, Y.; Bryksina, N.; Sugaipova, A.; Pokrovsky, O.; Shirokova, L.; Kouraev, A.; Zakharova, E.; Kolmakova, M.; Dupre, B.</p> <p>2009-04-01</p> <p>Drained thaw lake <span class="hlt">basins</span> in Western Siberia have a local name "khasyreis" [1]. Khasyreis as well as lakes, ponds and frozen mounds are invariable element of sub-arctic frozen peat bogs - palsas and tundra landscapes. In some areas of <span class="hlt">West</span>-Siberian sub-arctic khasyreis occupy up to 40-50% of total lake area. Sometimes their concentration is so high that we call such places ‘khasyrei's fields". Khasyreis are part of the natural cycle of palsa complex development [1], but their origin is not continuous and uniform in time and, according to our opinion, there were periods of more intensive lake drainage and khasyrei development accordingly. These times were corresponding with epochs of climatic warming and today we have faced with one of them. So, last years this process was sufficiently activated in the south part of <span class="hlt">West</span>-Siberian sub-arctic [2]. It was discovered that in the zone of continuous permafrost thermokarst lakes have expanded their areas by about 10-12%, but in the zone of discontinuous permafrost the process of their drainage prevails. These features are connected with the thickness of peat layers which gradually decreases to the North, and thus have reduced the opportunity for lake drainage in northern areas. The most typical way of khasyrei origin is their drainage to the bigger lakes which are always situated on the lower levels and works as a collecting funnels providing drainage of smaller lakes. The lower level of the big lake appeared when the lake takes a critical mass of water enough for subsidence of the lake bottom due to the melting of underlaying rocks [2]. Another one way of lake drainage is the lake intercept by any river. Lake drainage to the subsurface (underlaying rocks) as some authors think [3, 4] is not possible in Western Siberia, because the thickness of permafrost is at list 500 m here being safe confining bed. We mark out few stages of khasyrei development: freshly drained, young, mature and old. This row reflects stages of</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2012JAfES..65....1D','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2012JAfES..65....1D"><span>Timing the structural events in the Palaeoproterozoic Bolé-Nangodi belt terrane and adjacent Maluwe <span class="hlt">basin</span>, <span class="hlt">West</span> African craton, in central-<span class="hlt">west</span> Ghana</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>de Kock, G. S.; Théveniaut, H.; Botha, P. M. W.; Gyapong, W.</p> <p>2012-04-01</p> <p> deposited concordantly on the submerged Sunyani strata after a hiatus of 20 million years. After cessation of the NW-SE-directed compression the early Tanina Suite intruded as batholiths, dykes and sheets and produced garnet, staurolite, sillimanite and kyanite in their thermal aureoles. Docking of the Sunyani <span class="hlt">basin</span> produced the DE2 thrust related folding and stacking in the deformed and granitoid invaded Maluwe <span class="hlt">basin</span> as well as the single stage sin- and anticlinoria in the Sunyani and Banda Groups. In the Maluwe <span class="hlt">basin</span> the Abulembire fragment acted as a resistor and the approaching front rotated anticlockwise and clockwise around the barrier to form <span class="hlt">west</span>- and north-directed piggy-back thrust-stacking and deformation of the Tanina Suite granitoids. Due to the low metamorphic conditions the DE2 fabric is limited to crenulation cleavages in the more psammitic and pelitic units. The fold axes are double plunging (N-S and E-W) up to 60° with the axial planar fabric subvertical. Post-D2 tectonic relaxation has allowed the emplacement of the last Tanina Suite calc-alkaline melts and was succeeded by N-S extension fracturing (DE3) along which mantle derived Wakawaka gabbroids and syenite intruded. The DE1 folding occurred between 2125 and 2122 Ma and DE2 before 2119 Ma. The tectonic relaxation occurred at 2118 Ma. Around 2100 Ma, NE-SW directed strike-slip shearing (DE4), fractured the Bolé-Nangodi terrane and enhanced the <span class="hlt">basin</span>-belt boundary. Along the boundary, the displacement was dextral along vertical faults but, southward, it became more east-over-<span class="hlt">west</span> thrust related. Associated tension gashes are filled with vein quartz and pegmatite and typical of the brittle sector of the crust. Tectonism in this part of the intraoceanic accretionary arc back-arc complex was concluded by limited, right-lateral strike-slip (DE5) movement which formed some breccias.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_4");'>4</a></li> <li><a href="#" onclick='return showDiv("page_5");'>5</a></li> <li class="active"><span>6</span></li> <li><a href="#" onclick='return showDiv("page_7");'>7</a></li> <li><a href="#" onclick='return showDiv("page_8");'>8</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_6 --> <div id="page_7" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_5");'>5</a></li> <li><a href="#" onclick='return showDiv("page_6");'>6</a></li> <li class="active"><span>7</span></li> <li><a href="#" onclick='return showDiv("page_8");'>8</a></li> <li><a href="#" onclick='return showDiv("page_9");'>9</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="121"> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/21212665','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/21212665"><span>Problems of phytostratigraphy and the correlation of the Lower Jurassic continental sediments in <span class="hlt">West</span> Siberia and Kuznetsk and Kansk-Achinsk <span class="hlt">basins</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Mogutcheva, N.K.</p> <p>2009-06-15</p> <p>Paleofloral and palynological records of Lower Jurassic sediments in <span class="hlt">West</span> Siberia, Kuznetsk (Kuzbass), and Kansk-Achinsk <span class="hlt">basins</span> and their correlation are discussed. In a number of recent papers dedicated to the Jurassic stratigraphy of Siberia this problem is ambiguously treated. The reference palynological scale has been developed for the Jurassic <span class="hlt">West</span> Siberian sediments and an uninterrupted succession of floral assemblages associated with it and with regional stratigraphic units has been recognized. On this basis the scheme of the correlation between the Lower Jurassic sediments of the Kansk-Achinsk and Kuznetsk <span class="hlt">basins</span> and <span class="hlt">West</span> Siberia permitting a better age estimate of coal-bearing deposits, is proposed.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/755452','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/755452"><span>Application of advanced reservoir characterization, simulation, and production optimization strategies to maximize recovery in slope and <span class="hlt">basin</span> clastic reservoirs, <span class="hlt">West</span> Texas (Delaware <span class="hlt">Basin</span>), Class III</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Dutton, Shirley P.; Flanders, William A.; Zirczy, Helena H.</p> <p>2000-05-24</p> <p>The objective of this Class 3 project was to demonstrate that detailed reservoir characterization of slope and <span class="hlt">basin</span> clastic reservoirs in sandstones of the Delaware Mountain Group in the Delaware <span class="hlt">Basin</span> of <span class="hlt">West</span> Texas and New Mexico is a cost effective way to recover a higher percentage of the original oil in place through strategic placement of infill wells and geologically based field development. Phase 1 of the project, reservoir characterization, was completed this year, and Phase 2 began. The project is focused on East Ford field, a representative Delaware Mountain Group field that produces from the upper Bell Canyon Formation (Ramsey sandstone). The field, discovered in 1960, is operated by Oral Petco, Inc., as the East Ford unit. A CO{sub 2} flood is being conducted in the unit, and this flood is the Phase 2 demonstration for the project.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2014AGUFM.H33A0781H','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2014AGUFM.H33A0781H"><span>Conditions for Land Subsidence and Ground Failure in Lacustrine Sediments, the Case of <span class="hlt">West</span> Chapala <span class="hlt">Basin</span>.</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Hernandez-Marin, M.; Pacheco, J.; Ortiz-Lozano, J. A.; Ramirez-Cortes, A.; Araiza, G.</p> <p>2014-12-01</p> <p>Surface deformation in the form of land subsidence and ground failure in the Chapala <span class="hlt">Basin</span> has caused serious damage to structures, mostly homes. In this work, the conditions for the occurrence of deformation particularly regarding the physical and mechanical properties of the soil are discussed. In 2012 a maximum land subsidence of 7.16 cm in a short period of 8 months was recorded with maximum velocities of deformation close to 0.89 centimeters per month. Natural conditions of the zone of study include a lacustrine low land with the perennial Chapala Lake, surrounded by ranges formed by volcanic extrusive rocks, mostly basalts and andesites. Two soil cores of 11 meters depth show the predominance of fine soil but with the incrustation of several sandy lenses of volcanic ash. In the first core closer to the piedmont, the volcanic ash presents an accumulated thickness close to three meters, starting at 4.5 meters depth; on the contrary, this thickness in the second core closer to the lake is critically reduced to no more than 50 centimeters. Even though the predominance of fine soil is significant, water-content averages 100 % and the liquid limit is low, suggesting amongst other possibilities, low content of clay or at least low content of smectites or allophanes in the clayey portion. Other properties of the soil are being determined for analyses. The occurrence of three alignments of ground failures in the community of Jocotepec at the <span class="hlt">west</span>, mostly faults, suggests highly heterogeneous subsoil. The high volumes of groundwater withdrawn from the local aquifers mainly for agriculture are directly contributing to the increase of the effective stress and surface deformation, however, the relationship between level descents and surficial deformation is still not clear.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2009AGUFM.V43I..08K','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2009AGUFM.V43I..08K"><span>Sulfur in submarine eruptions: Observations and preliminary data from <span class="hlt">West</span> Mata, NE Lau <span class="hlt">Basin</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Keller, N. S.; Rubin, K. H.; Clague, D. A.; Michael, P. J.; Resing, J. A.; Cooper, L. B.; Shaw, A. M.; Ono, S.; Tamura, Y.</p> <p>2009-12-01</p> <p>Sulfur in its various oxidation states is a major component of magmatic volatiles; its abundance and isotopic composition constrain degassing processes as well as sulfur sources, and have been used as a tool to study sulfur cycling at convergent plate margins. However, there are almost no sulfur isotope data on active submarine eruptions as such eruptions have only been witnessed in recent years. Little is known on the effect of water depth and eruptive processes on the isotopic composition of all sulfur-bearing phases, in particular on the relationship between δ33S and δ34S. Therefore, the active eruption observed at <span class="hlt">West</span> Mata Volcano during a NOAA/NSF rapid response cruise to the NE Lau <span class="hlt">Basin</span> in May 2009 provided a unique opportunity to study lavas, fluids and native sulfur from an ongoing submarine eruption. <span class="hlt">West</span> Mata is situated about 40 km <span class="hlt">west</span> of the northern termination of the Tonga Arc and its summit is at a water depth of 1193 m. Two main areas of active vents were discovered near the summit, named Hades and Prometheus. The observed eruptive processes consisted of pyroclastic activity and degassing at both vents; additionally, extrusion of tubular pillows was observed at Hades. The eruption plumes had a pronounced yellow color, due to the presence of large quantities of native sulfur globules. Five ROV Jason 2 dives on and around the summit area returned samples of pillows, sheet flows, spatter fragments, pyroclastic deposits, as well as gas and fluid samples. The pyroclastic deposits close to the vents contain numerous sulfur droplets, whereas sediment scoops taken further from the vents are free of native sulfur, suggesting that the droplets disintegrate and dissolve over time, so their presence may be a qualitative age indicator for the eruptive material. The sulfur globules are generally quasi perfect spheres up to 5 mm in diameter, mostly yellow, but sometimes pink, orange or grey. Several droplets were found to have elongated or twisted shapes</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/6002200','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/6002200"><span>Structural relations between Marfa, Marathon, Val Verde, and Delaware <span class="hlt">basins</span> of <span class="hlt">west</span> Texas</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Keller, G.R.; Smith, K.J.</p> <p>1985-02-01</p> <p>The Marfa, Marathon, Val Verde, and Delaware <span class="hlt">basins</span> and related uplifts formed the major structural elements of the southwestern continental margin of North America during the Paleozoic. In contrast with the relatively simple relationships where the southern Oklahoma aulacogen intersects the Ouachita orogenic belt, structural relationships in the area of these <span class="hlt">basins</span> are very complex. Various geologic evidence points to an allochthonous Marathon <span class="hlt">basin</span>. However, a prominent gravity anomaly is associated with the Ouachita system as it extends from western Arkansas through Oklahoma and Texas into northern Mexico. If this anomaly is the signature of the early Paleozoic continental margin, then the location of the Marathon <span class="hlt">basin</span> with respect to this anomaly suggests lateral displacements have been only on the scale of tens of kilometers. The Delaware <span class="hlt">basin</span> seems clearly analogous to the Anadarko <span class="hlt">basin</span> in that it formed as a result of reactivation of a major crustal flaw (not necessarily a rift). This reactivation was a result of the Ouachita orogeny. The Marfa <span class="hlt">basin</span> is also flanked by a linear gravity high and basement uplift. The relationship of this anomaly to the gravity high associated with the Ouachita system suggests that the Marfa <span class="hlt">basin</span> may be more analogous to the Delaware <span class="hlt">basin</span> that foreland <span class="hlt">basins</span> such as the Ft. Worth and Arkoma. A prominent gravity high that extends into northern Mexico is associated with the Devil's River uplift, and the relationships between this feature, the Val Verde <span class="hlt">basin</span>, and adjacent structures suggest major deformation on a crustal scale.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/of/2007/1003/','USGSPUBS'); return false;" href="https://pubs.usgs.gov/of/2007/1003/"><span>In search of a Silurian Total Petroleum System in the Appalachian <span class="hlt">Basin</span> of New York, Ohio, Pennsylvania, and <span class="hlt">West</span> Virginia</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Ryder, Robert T.; Swezey, Christopher S.; Trippi, Michael H.; Lentz, Erika E.; Avary, K. Lee; Harper, John A.; Kappel, William M.; Rea, Ronald G.</p> <p>2007-01-01</p> <p>This report provides an evaluation of the source rock potential of Silurian strata in the U.S. portion of the northern Appalachian <span class="hlt">Basin</span>, using new TOC and RockEval data. The study area consists of all or parts of New York, Ohio, Pennsylvania, and <span class="hlt">West</span> Virginia. The stratigraphic intervals that were sampled for this study are as follows: 1) the Lower Silurian Cabot Head Shale, Rochester Shale, and Rose Hill Formation; 2) the Lower and Upper Silurian McKenzie Limestone, Lockport Dolomite, and Eramosa Member of the Lockport Group; and 3) the Upper Silurian Wills Creek Formation, Tonoloway Limestone, Salina Group, and Bass Islands Dolomite. These Silurian stratigraphic intervals were chosen because they are cited in previous publications as potential source rocks, they are easily identified and relatively continuous across the <span class="hlt">basin</span>, and they contain beds of dark gray to black shale and (or) black argillaceous limestone and dolomite.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/fs/2007/3115/','USGSPUBS'); return false;" href="https://pubs.usgs.gov/fs/2007/3115/"><span>Assessment of Undiscovered Oil and Gas Resources of the Permian <span class="hlt">Basin</span> Province of <span class="hlt">West</span> Texas and Southeast New Mexico, 2007</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Schenk, Christopher J.; Pollastro, Richard M.; Cook, Troy A.; Pawlewicz, Mark J.; Klett, Timothy R.; Charpentier, Ronald R.; Cook, Harry E.</p> <p>2008-01-01</p> <p>The U.S. Geological Survey (USGS) recently assessed the undiscovered oil and gas potential of the Permian <span class="hlt">Basin</span> Province of <span class="hlt">west</span> Texas and southeast New Mexico. The assessment was geology based and used the total petroleum system concept. The geologic elements of a total petroleum system are petroleum source rocks (quality, source rock maturation, generation, and migration), reservoir rocks (sequence stratigraphy, petrophysical properties), and traps (trap formation and timing). This study assessed potential for technically recoverable resources in new field discoveries only; field growth (or reserve growth) of conventional oil and gas fields was not included. Using this methodology, the U.S. Geological Survey estimated a mean of 41 trillion cubic feet of undiscovered natural gas and a mean of 1.3 billion barrels of undiscovered oil in the Permian <span class="hlt">Basin</span> Province.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70020188','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70020188"><span>Gas hydrates in the Messoyakha gas field of the <span class="hlt">West</span> Siberian <span class="hlt">Basin</span> - a re-examination of the geologic evidence</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Collett, Timothy S.; Ginsburg, Gabriel D.; ,</p> <p>1997-01-01</p> <p>The amount of natural gas within the gas hydrate accumulations of the world is believed to greatly exceed the volume of known conventional natural gas reserves. The hydrocarbon production history of the Russian Messoyakha field, located in the <span class="hlt">West</span> Siberian <span class="hlt">Basin</span>, has been used as evidence that gas hydrates are an immediate source of natural gas that can be produced by conventional means. Re-examination of available geologic, geochemical, and hydrocarbon production data suggests, however, that gas hydrates may not have contributed to gas production in the Messoyakha field. More field and laboratory studies are needed to assess the historical contribution of gas hydrate production in the Messoyakha field.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70035532','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70035532"><span>Deciphering the mid-Carboniferous eustatic event in the central Appalachian foreland <span class="hlt">basin</span>, southern <span class="hlt">West</span> Virginia, USA</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Blake, B.M.; Beuthin, J.D.</p> <p>2008-01-01</p> <p>A prominent unconformity, present across shallow shelf areas of the Euramerican paleoequatorial <span class="hlt">basins</span>, is used to demark the boundary between the Mississippian and Pennsylvanian subsystems. This unconformity, the mid-Carboniferous eustatic event, is generally attributed to a major glacio-eustatic sea-level fall. Although a Mississippian-Pennsylvanian unconformity is recognized throughout most of the Appalachian region, the record of the mid-Carboniferous eustatic event in the structurally deepest part of the <span class="hlt">basin</span> has been controversial. Based on early reports that suggested the most complete Pennsylvanian section was present in southern <span class="hlt">West</span> Virginia, various conceptual depositional models postulated continuous sedimentation between the youngest Mississippian Bluestone Formation and the oldest Penn-sylvanian Pocahontas Formation. In contrast, tabular-erosion models envisioned axial drainage systems that evolved in response to changing <span class="hlt">basin</span> dynamics. These models predicted a Mississippian-Pennsylvanian unconformity. All these models suffered from a lack of biostratigraphic control. The presence of a sub-Pocahontas paleovalley, herein named the Lashmeet paleovalley, has been confirmed in southern <span class="hlt">West</span> Virginia. The Lashmeet paleovalley was incised over 35 m into Bluestone strata and filled by lithic sands derived from the Appalachian orogen to the northeast and east. The polygenetic Green Valley paleosol complex marks the Bluestone-Pocahontas contact on associated interfluves. Together, these features indicate a substantial period of subaerial exposure and argue strongly in favor of a Mississippian-Pennsylvanian unconformity. Paleontologic data from the Bluestone Formation, including marine invertebrates and conodonts from the marine Bramwell Member and paleofloral data, support a late, but not latest, Arnsbergian age assignment. Marine fossils are not known from the Pocahontas Formation, but macrofloral and palynomorph taxa support a Langsettian age for most of</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2013EGUGA..1512852N','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2013EGUGA..1512852N"><span>New insights on aerosol sources and properties of Organics in the <span class="hlt">west</span> Mediterranean <span class="hlt">basin</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Nicolas, José B.; Sciare, Jean; Petit, Jean-Eudes; Bonnaire, Nicolas; Féron, Anais; Dulac, François; Hamonou, Eric; Gros, Valérie; Mallet, Marc; Lambert, Dominique; Sauvage, Stéphane; Léonardis, Thierry; Tison, Emmanuel; Colomb, Aurélie; Fresney, Evelyn; Pichon, Jean-Marc; Bouvier, Laetitia; Bourrianne, Thierry; Roberts, Gregory</p> <p>2013-04-01</p> <p>The Mediterranean <span class="hlt">basin</span> exhibits high PM concentrations for a marine area, in particular during the dry season (summer), associated with high photochemistry. The large population of the <span class="hlt">basin</span> is impacted by both natural and anthropogenic aerosols of various sources from Europe and North Africa. Simulations predict significant climate changes in that area, with less precipitation and hotter temperatures, reinforced by an increasing anthropogenic pressure, which will be linked by higher emissions of pollutants and also by higher impacts on the health. Nevertheless the aerosol models in that area currently suffer from large uncertainties, due to a lack of knowledge in organic aerosol (OA) sources and processes. As part of the French program ChArMEx (The Chemistry-Aerosol Mediterranean Experiment, http://charmex.lsce.ipsl.fr), a 5-week intensive campaign has been performed in June - July 2012 at the new Cape Corsica station (see Dulac et al. in that session), and aiming at a better characterization of anthropogenic versus biogenic aerosols, long range transport versus local influence, with a focus on fine OA. A complete instrumental strategy was deployed thanks to the contribution of a large French community: PM1 concentration every 6 min with a TEOM-FDMS 1405 (Thermo), major aerosol components in PM1 every 30 min (Organics, SO4, NO3, NH4) by Aerosol Chemical Speciation Monitor (Aerodyne), Equivalent Black Carbon every 5 min with a 7-? aethalometer AE31 (Magee Scientific), on-line major anions and cations (incl. light organics like oxalate & MSA) every 10 min with Particle-Into-Liquid Sampler (PILS, Metrohm) coupled with Ion Chromatographs (Dionex), on-line water-soluble organic carbon (WSOC) every 4 min with a PILS (Applikon) coupled with a Total Organic Carbon instrument (Ionics). Filter sampling in PM2.5 and PM10 was also performed every 12h for quality purposes (PM, EC/OC, ions) and for complementary measurements (metals by ICP-MS and organic tracers by LC</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.water.usgs.gov/wri974077/','USGSPUBS'); return false;" href="http://pubs.water.usgs.gov/wri974077/"><span>Hydrologic and water-quality conditions in the Horse Creek <span class="hlt">Basin</span>, <span class="hlt">west</span>-central Florida, October 1992-February 1995</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Lewelling, B.R.</p> <p>1997-01-01</p> <p>A baseline study of the 241-square-mile Horse Creek <span class="hlt">basin</span> was undertaken from October 1992 to February 1995 to assess the hydrologic and water-quality conditions of one of the last remaining undeveloped <span class="hlt">basins</span> in <span class="hlt">west</span>-central Florida. During the period of the study, much of the <span class="hlt">basin</span> remained in a natural state, except for limited areas of cattle and citrus production and phosphate mining. Rainfall in 1993 and 1994 in the Horse Creek <span class="hlt">basin</span> was 8 and 31 percent, respectively, above the 30-year long-term average. The lowest and highest maximum instantaneous peak discharge of the six daily discharge stations occurred at the Buzzard Roost Branch and the Horse Creek near Arcadia stations with 185 to 4,180 cubic feet per second, respectively. The Horse Creek near Arcadia station had the lowest number of no-flow days with zero days and the Brushy Creek station had the highest number with 113 days. During the study, the <span class="hlt">West</span> Fork Horse Creek subbasin had the highest daily mean discharge per square mile with 30.6 cubic feet per second per square mile, and the largest runoff coefficient of 43.7 percent. The Buzzard Roost Branch subbasin had the lowest daily mean discharge per square mile with 5.05 cubic feet per second per square mile, and Brushy Creek and Brandy Branch shared the lowest runoff coefficient of 0.6 percent. Brandy Branch had the highest monthly mean runoff in both 1993 and 1994 with 11.48 and 19.28 inches, respectively. During the high-baseflow seepage run, seepage gains were 8.87 cubic feet per second along the 43-mile Horse Creek channel. However, during the low-baseflow seepage run, seepage losses were 0.88 cubic foot per second. Three methods were used to estimate average annual ground-water recharge in the Horse Creek <span class="hlt">basin</span>: (1) well hydrograph, (2) chloride mass balance, and (3) streamflow hydrograph. Estimated average annual recharge using these three methods ranged from 3.6 to 8.7 inches. The high percentage of carbonate plus bicarbonate analyzed at</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.dtic.mil/docs/citations/ADA283736','DTIC-ST'); return false;" href="http://www.dtic.mil/docs/citations/ADA283736"><span>Socioeconomic Impact of Infill Drilling Recovery from Carbonate Reservoirs in the Permian <span class="hlt">Basin</span>, <span class="hlt">West</span> Texas</span></a></p> <p><a target="_blank" href="https://publicaccess.dtic.mil/psm/api/service/search/search">DTIC Science & Technology</a></p> <p></p> <p>1994-05-01</p> <p>revenues of infill drilling and the creation of jobs in the Permian <span class="hlt">basin</span> communities, and ( 3 ) develops a correlation between the increased tax...1 3 viii Page CHAPTER IV THE AMOUNT OF REVENUE FROM OIL PRODUCTION...the Permian <span class="hlt">Basin</span> ........................ 32 4.5 Percent of Federal Income Tax ............................................ 3 33 4.6 Rule of Thumb in</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3700009','PMC'); return false;" href="https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3700009"><span>Using Spatial Information Technologies as Monitoring Devices in International Watershed Conservation along the Senegal River <span class="hlt">Basin</span> of <span class="hlt">West</span> Africa</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>Merem, Edmund C.; Twumasi, Yaw A.</p> <p>2008-01-01</p> <p>In this paper, we present the applications of spatial technologies—Geographic Information Systems (GIS) and remote sensing—in the international monitoring of river <span class="hlt">basins</span> particularly analyzing the ecological, hydrological, and socio-economic issues along the Senegal River. The literature on multinational water crisis has for decades focused on mediation aspects of trans-boundary watershed management resulting in limited emphasis placed on the application of advances in geo-spatial information technologies in multinational watershed conservation in the arid areas of the <span class="hlt">West</span> African sub-region within the Senegal River <span class="hlt">Basin</span> for decision-making and monitoring. While the <span class="hlt">basin</span> offers life support in a complex ecosystem that stretches across different nations in a mostly desert region characterized by water scarcity and subsistence economies, there exists recurrent environmental stress induced by both socio-economic and physical factors. Part of the problems consists of flooding, drought and limited access to sufficient quantities of water. These remain particularly sensitive issues that are crucial for the health of a rapidly growing population and the economy. The problems are further compounded due to the threats of climate change and the resultant degradation of almost the region’s entire natural resources base. While the pace at which the institutional framework for managing the waters offers opportunities for hydro electricity and irrigated agriculture through the proliferation of dams, it has raised other serious concerns in the region. Even where data exists for confronting these issues, some of them are incompatible and dispersed among different agencies. This not only widens the geo-spatial data gaps, but it hinders the ability to monitor water problems along the <span class="hlt">basin</span>. This study will fill that gap in research through mix scale methods built on descriptive statistics, GIS and remote sensing techniques by generating spatially referenced data to</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/19151444','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/19151444"><span>Using spatial information technologies as monitoring devices in international watershed conservation along the Senegal River <span class="hlt">Basin</span> of <span class="hlt">West</span> Africa.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Merem, Edmund C; Twumasi, Yaw A</p> <p>2008-12-01</p> <p>In this paper, we present the applications of spatial technologies-Geographic Information Systems (GIS) and remote sensing-in the international monitoring of river <span class="hlt">basins</span> particularly analyzing the ecological, hydrological, and socio-economic issues along the Senegal River. The literature on multinational water crisis has for decades focused on mediation aspects of trans-boundary watershed management resulting in limited emphasis placed on the application of advances in geo-spatial information technologies in multinational watershed conservation in the arid areas of the <span class="hlt">West</span> African sub-region within the Senegal River <span class="hlt">Basin</span> for decision-making and monitoring. While the <span class="hlt">basin</span> offers life support in a complex ecosystem that stretches across different nations in a mostly desert region characterized by water scarcity and subsistence economies, there exists recurrent environmental stress induced by both socio-economic and physical factors. Part of the problems consists of flooding, drought and limited access to sufficient quantities of water. These remain particularly sensitive issues that are crucial for the health of a rapidly growing population and the economy. The problems are further compounded due to the threats of climate change and the resultant degradation of almost the region's entire natural resources base. While the pace at which the institutional framework for managing the waters offers opportunities for hydro electricity and irrigated agriculture through the proliferation of dams, it has raised other serious concerns in the region. Even where data exists for confronting these issues, some of them are incompatible and dispersed among different agencies. This not only widens the geo-spatial data gaps, but it hinders the ability to monitor water problems along the <span class="hlt">basin</span>. This study will fill that gap in research through mix scale methods built on descriptive statistics, GIS and remote sensing techniques by generating spatially referenced data to supplement</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/5574491','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/5574491"><span>New hydrocarbon plays and prospects in the Douala <span class="hlt">basin</span>, Cameroon, <span class="hlt">west</span> Africa</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Kilenyi, T. )</p> <p>1991-03-01</p> <p>New seismic data acquired by GECO together with reprocessing of old data and geochemical analysis have thrown a new light on the petroleum geology of the Douala <span class="hlt">basin</span>. The seismic data show a variety of possible traps, particularly in the offshore part of the <span class="hlt">basin</span>, including submarine fans, buried paleohighs, salt-induced structures, updip wedging out of reservoirs, etc. Geochemical data based on advanced analytical method indicate that none of the potential source rocks encountered in wells actually matches the oils; therefore new sourcing of the known reservoirs has to be considered. Geochemical fossils indicate derivation from two sources, one probably Late Cretaceous deep marineshales now in a far offshore position while a second one is of Early Cretaceous age and of lacustrine origin. All new data indicate that the Douala <span class="hlt">basin</span> is likely to turn out to be a prolific oil <span class="hlt">basin</span> and not a gas <span class="hlt">basin</span> as suggested by some earlier publications.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/26717483','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/26717483"><span>Spatio-Temporal Identification of Areas Suitable for <span class="hlt">West</span> Nile Disease in the Mediterranean <span class="hlt">Basin</span> and Central Europe.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Conte, Annamaria; Candeloro, Luca; Ippoliti, Carla; Monaco, Federica; De Massis, Fabrizio; Bruno, Rossana; Di Sabatino, Daria; Danzetta, Maria Luisa; Benjelloun, Abdennasser; Belkadi, Bouchra; El Harrak, Mehdi; Declich, Silvia; Rizzo, Caterina; Hammami, Salah; Ben Hassine, Thameur; Calistri, Paolo; Savini, Giovanni</p> <p>2015-01-01</p> <p><span class="hlt">West</span> Nile virus (WNV) is a mosquito-transmitted Flavivirus belonging to the Japanese encephalitis antigenic complex of the Flaviviridae family. Its spread in the Mediterranean <span class="hlt">basin</span> and the Balkans poses a significant risk to human health and forces public health officials to constantly monitor the virus transmission to ensure prompt application of preventive measures. In this context, predictive tools indicating the areas and periods at major risk of WNV transmission are of paramount importance. Spatial analysis approaches, which use environmental and climatic variables to find suitable habitats for WNV spread, can enhance predictive techniques. Using the Mahalanobis Distance statistic, areas ecologically most suitable for sustaining WNV transmission were identified in the Mediterranean <span class="hlt">basin</span> and Central Europe. About 270 human and equine clinical cases notified in Italy, Greece, Portugal, Morocco, and Tunisia, between 2008 and 2012, have been considered. The environmental variables included in the model were altitude, slope, night time Land Surface Temperature, Normalized Difference Vegetation Index, Enhanced Vegetation Index, and daily temperature range. Seasonality of mosquito population has been modelled and included in the analyses to produce monthly maps of suitable areas for <span class="hlt">West</span> Nile Disease. Between May and July, the most suitable areas are located in Tunisia, Libya, Egypt, and North Cyprus. Summer/Autumn months, particularly between August and October, characterize the suitability in Italy, France, Spain, the Balkan countries, Morocco, North Tunisia, the Mediterranean coast of Africa, and the Middle East. The persistence of suitable conditions in December is confined to the coastal areas of Morocco, Tunisia, Libya, Egypt, and Israel.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2016GGG....17.1164C','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2016GGG....17.1164C"><span>Stabilization of large drainage <span class="hlt">basins</span> over geological time scales: Cenozoic <span class="hlt">West</span> Africa, hot spot swell growth, and the Niger River</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Chardon, Dominique; Grimaud, Jean-Louis; Rouby, Delphine; Beauvais, Anicet; Christophoul, Frédéric</p> <p>2016-03-01</p> <p>Reconstructing the evolving geometry of large river catchments over geological time scales is crucial to constraining yields to sedimentary <span class="hlt">basins</span>. In the case of Africa, it should further help deciphering the response of large cratonic sediment routing systems to Cenozoic growth of the <span class="hlt">basin</span>-and-swell topography of the continent. Mapping of dated and regionally correlated lateritic paleolandscape remnants complemented by onshore sedimentological archives allows the reconstruction of two physiographic configurations of <span class="hlt">West</span> Africa in the Paleogene. Those reconstructions show that the geometry of the drainage is stabilized by the late early Oligocene (29 Ma) and probably by the end of the Eocene (34 Ma), allowing to effectively link the inland morphoclimatic record to offshore sedimentation since that time, particularly in the case of the Niger catchment—delta system. Mid-Eocene paleogeography reveals the antiquity of the Senegambia catchment back to at least 45 Ma and suggests that a marginal upwarp forming a continental divide preexisted early Oligocene connection of the Niger and Volta catchments to the Equatorial Atlantic Ocean. Such a drainage rearrangement was primarily enhanced by the topographic growth of the Hoggar hot spot swell and caused a stratigraphic turnover along the Equatorial margin of <span class="hlt">West</span> Africa.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/213053','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/213053"><span>Precambrian basement geology of the Permian <span class="hlt">basin</span> region of <span class="hlt">west</span> Texas and Eastern New Mexico: A geophysical perspective</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Adams, D.C.; Keller, G.R.</p> <p>1996-03-01</p> <p>Because most of the Permian <span class="hlt">basin</span> region of <span class="hlt">west</span> Texas and southern New Mexico is covered by Phanerozoic rocks, other means must be found to examine the Precambrian upper crustal geology of the region. We have combined geologic information on the Precambrian from outcrops and wells with geophysical information from gravity and magnetic surveys in an integrated analysis of the history and structure of basement rocks in the region. Geophysical anomalies can be related to six Precambrian events: formation of the Early Proterozoic outer tectonic belt, igneous activity in the southern Granite-Rhyolite province, an episode of pre-Grenville extension, the Grenville orogeny, rifting to form the Delaware aulacogen, and Eocambrian rifting to form the early Paleozoic continental margin. Two geophysical features were studied in detail: the Abilene gravity minimum and the Central <span class="hlt">Basin</span> platform gravity high. The Abilene gravity minimum is shown to extend from the Delaware <span class="hlt">basin</span> across north-central Texas and is interpreted to be caused by a granitic batholith similar in size to the Sierra Nevada batholith in California and Nevada. This batholith appears to be related to formation of the southern Granite- Rhyolite province, possibly as a continental margin arc batholith. Because of this interpretation, we have located the Grenville tectonic front southward from its commonly quoted position, closer to the Llano uplift. Middle Proterozoic mafic intrusions are found to core the Central <span class="hlt">Basin</span> platform and the Roosevelt uplift. These intrusions formed at about 1.1 Ga and are related in time to both the Mid-Continent rift system and the Grenville orogeny in Texas. Precambrian basement structures and changes in lithology have influenced the structure and stratigraphy in the overlying Permian <span class="hlt">basin</span>, and thus have potential exploration significance.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/801166','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/801166"><span>Probability of Potential Multi-Canister Overpack Loading System Drop of Proof Load in the K <span class="hlt">West</span> <span class="hlt">Basin</span> South Loadout Pit</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>SHULTZ, M.V.</p> <p>2000-01-20</p> <p>This document presents the results of a probabilistic analysis of the potential for load drop during the load test of the K <span class="hlt">West</span> <span class="hlt">Basin</span> South Loadout Pit Gantry. The calculations are in support of the cask loading system (CLS) subproject load test of the gantry. The purpose of this calculation note is to document the probabilistic calculation of the per lift potential for drop of a test load by the Multi-Canister Overpack (MCO) Loading System (MLS) during load testing at the K <span class="hlt">West</span> <span class="hlt">Basin</span> south loadout pit. The MLS subproject needs to load test the MLS in the K <span class="hlt">West</span> <span class="hlt">Basin</span> south loadout pit. To perform this test, a basket mockup weighing approximately 4,500 lb (125% of a fully loaded MCO basket accounting for water displacement) needs to be used for one or more load tests. The test load will comprise a standard basket lifting attachment with several ring-shaped steel segments to provide the required weight. The test load will exceed the K <span class="hlt">Basin</span> Safety Analysis Report (WHC-SD-WM-SAR-062) (SAR) allowances for load drop in the K <span class="hlt">West</span> <span class="hlt">Basin</span> south loadout pit. This probabilistic calculation will be used as part of the basis for seeking U.S. Department of Energy approval to use an MLS test weight that exceeds SAR allowances.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70016345','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70016345"><span>Implications of low-temperature cooling history on a transect across the Colorado Plateau-<span class="hlt">Basin</span> and Range boundary, <span class="hlt">west</span> central Arizona</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Bryant, B.; Naeser, C.W.; Fryxell, J.E.</p> <p>1991-01-01</p> <p>Fission track ages of apatite and zircon from metamorphic, plutonic, and sedimentary rocks along a 80-km transect across the Colorado Plateau-<span class="hlt">Basin</span> and Range boundary in <span class="hlt">west</span> central Arizona show differences in the low-temperature cooling histories between the provinces. The transect extends from Cypress Mountain in the Colorado Plateau transition zone to the eastern Buckskin Mountains in the <span class="hlt">Basin</span> and Range. -from Authors</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_5");'>5</a></li> <li><a href="#" onclick='return showDiv("page_6");'>6</a></li> <li class="active"><span>7</span></li> <li><a href="#" onclick='return showDiv("page_8");'>8</a></li> <li><a href="#" onclick='return showDiv("page_9");'>9</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_7 --> <div id="page_8" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_6");'>6</a></li> <li><a href="#" onclick='return showDiv("page_7");'>7</a></li> <li class="active"><span>8</span></li> <li><a href="#" onclick='return showDiv("page_9");'>9</a></li> <li><a href="#" onclick='return showDiv("page_10");'>10</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="141"> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/of/1985/0552/report.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/of/1985/0552/report.pdf"><span>Sedimentation and water quality in the <span class="hlt">West</span> Branch Shade River <span class="hlt">basin</span>, Ohio, 1984 water year</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Childress, C.J.; Jones, R.L.</p> <p>1985-01-01</p> <p>Sedimentation in, and flooding of, the <span class="hlt">West</span> Branch Shade River and its tributaries have been major concerns of residents and State and local officials. The area was extensively surface mined for coal between the mid-1940 's and the early 1960's. Reclamation efforts immediately after mining were unsuccessful. The results have been elevated sediment loads and the subsequent loss of channel conveyance. Two sediment and stream gaging stations were established on <span class="hlt">West</span> Branch Shade River in the area of past mining to provide data to evaluate the effectiveness of current reclamation activities on reducing sediment loads. A third station was established on the East Branch Shade River in an unmined area as a control. From October 1983 through September 1984, the annual suspended sediment yield/acre-ft of runoff was approximately two times as high for <span class="hlt">West</span> Branch Shade River (0.51 ton/acre-ft of runoff) as for East Branch Shade River (0.28 ton/acre-ft). In addition, water quality of <span class="hlt">West</span> Branch indicates that acidity is higher, pH is lower, and concentrations of dissolved sulfate and metals are higher than for East Branch. The concentration of coal in bed material increased in the downstream direction along <span class="hlt">West</span> Branch Shade River. The concentration downstream in the <span class="hlt">West</span> Branch was more than 20 times greater than in the East Branch. (Author 's abstract)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/237267','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/237267"><span>Application of advanced reservoir characterization, simulation, and production optimization strategies to maximize recovery in slope and <span class="hlt">basin</span> clastic reservoirs, <span class="hlt">West</span> Texas (Delaware <span class="hlt">Basin</span>). Technical progress report</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Dutton, S.P.</p> <p>1996-04-30</p> <p>The objective of this project is to demonstrate that detailed reservoir characterization of slope and <span class="hlt">basin</span> clastic reservoirs in sandstones of the Delaware Mountain Group in the Delaware <span class="hlt">Basin</span> of <span class="hlt">West</span> Texas and New Mexico is a cost effective way to recover a higher percentage of the original oil in place through strategic placement of infill wells and geologically based field development. Project objectives are divided into two major phases. The objectives of the reservoir characterization phase of the project are to provide a detailed understanding of the architecture and heterogeneity of two fields, the Ford Geraldine unit and Ford <span class="hlt">West</span> field, which produce from the Bell Canyon and Cherry Canyon Formations, respectively, of the Delaware Mountain Group and to compare Bell Canyon and Cherry Canyon reservoirs. Reservoir characterization will utilize 3-D seismic data, high-resolution sequence stratigraphy, subsurface field studies, outcrop characterization, and other techniques. One the reservoir-characterization study of both field is completed, a pilot area of approximately 1 mi{sup 2} in one of the fields will be chosen for reservoir simulation. The objectives of the implementation phase of the project are to: (1) apply the knowledge gained from reservoir characterization and simulation studies to increase recovery from the pilot area; (2) demonstrate that economically significant unrecovered oil remains in geologically resolvable untapped compartments; and (3) test the accuracy of reservoir characterization and flow simulation as predictive tools in resource preservation of mature fields. A geologically designed, enhanced recovery program (CO{sub 2} flood, waterflood, or polymer flood) and well-completion program will be developed, and one to three infill well will be drilled and cored. Technical progress is summarized for: geophysical characterization; reservoir characterization; outcrop characterization; and producibility problem characterization.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/sir/2008/5226/','USGSPUBS'); return false;" href="https://pubs.usgs.gov/sir/2008/5226/"><span>Simulation of Water Quality in the Tull Creek and <span class="hlt">West</span> Neck Creek Watersheds, Currituck Sound <span class="hlt">Basin</span>, North Carolina and Virginia</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Garcia, Ana Maria</p> <p>2009-01-01</p> <p>A study of the Currituck Sound was initiated in 2005 to evaluate the water chemistry of the Sound and assess the effectiveness of management strategies. As part of this study, the Soil and Water Assessment Tool (SWAT) model was used to simulate current sediment and nutrient loadings for two distinct watersheds in the Currituck Sound <span class="hlt">basin</span> and to determine the consequences of different water-quality management scenarios. The watersheds studied were (1) Tull Creek watershed, which has extensive row-crop cultivation and artificial drainage, and (2) <span class="hlt">West</span> Neck Creek watershed, which drains urban areas in and around Virginia Beach, Virginia. The model simulated monthly streamflows with Nash-Sutcliffe model efficiency coefficients of 0.83 and 0.76 for Tull Creek and <span class="hlt">West</span> Neck Creek, respectively. The daily sediment concentration coefficient of determination was 0.19 for Tull Creek and 0.36 for <span class="hlt">West</span> Neck Creek. The coefficient of determination for total nitrogen was 0.26 for both watersheds and for dissolved phosphorus was 0.4 for Tull Creek and 0.03 for <span class="hlt">West</span> Neck Creek. The model was used to estimate current (2006-2007) sediment and nutrient yields for the two watersheds. Total suspended-solids yield was 56 percent lower in the urban watershed than in the agricultural watershed. Total nitrogen export was 45 percent lower, and total phosphorus was 43 percent lower in the urban watershed than in the agricultural watershed. A management scenario with filter strips bordering the main channels was simulated for Tull Creek. The Soil and Water Assessment Tool model estimated a total suspended-solids yield reduction of 54 percent and total nitrogen and total phosphorus reductions of 21 percent and 29 percent, respectively, for the Tull Creek watershed.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/7432','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/7432"><span>Application of Advanced Reservoir Characterization, Simulation, and Production Optimization Strategies to Maximize Recovery in Slope and <span class="hlt">Basin</span> Clastic Reservoirs, <span class="hlt">West</span> Texas (Delaware <span class="hlt">Basin</span>)</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Dutton, S.P.; Flanders, W.A.; Guzman, J.I.; Zirczy, H.</p> <p>1999-06-08</p> <p>The objective of this Class III project is to demonstrate that detailed reservoir characterization of slope and <span class="hlt">basin</span> clastic reservoirs in sandstones of the Delaware Mountain Group in the Delaware <span class="hlt">Basin</span> of <span class="hlt">West</span> Texas and New Mexico is a cost-effective way to recover a higher percentage of the original oil in place through geologically based field development. This year the project focused on reservoir characterization of the East Ford unit, a representative Delaware Mountain Group field that produces from the upper Bell Canyon Formation (Ramsey Sandstone). The field, discovered in 1960, is operated by Orla Petco, Inc., as the East Ford unit; it contained an estimated 19.8 million barrels (MMbbl) of original oil in place. Petrophysical characterization of the East Ford unit was accomplished by integrating core and log data and quantifying petrophysical properties from wireline logs. Most methods of petrophysical analysis that had been developed during an earlier study of the Ford Geraldine unit were successfully transferred to the East Ford unit. The approach that was used to interpret water saturation from resistivity logs, however, had to be modified because in some East Ford wells the log-calculated water saturation was too high and inconsistent with observations made during the actual production. Log-porosity to core-porosity transforms and core-porosity to core-permeability transforms were derived from the East Ford reservoir. The petrophysical data were used to map porosity, permeability, net pay, water saturation, mobil-oil saturation, and other reservoir properties.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/fs/2016/3083/fs20163083.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/fs/2016/3083/fs20163083.pdf"><span>Assessment of undiscovered continuous oil and shale-gas resources in the Bazhenov Formation of the <span class="hlt">West</span> Siberian <span class="hlt">Basin</span> Province, Russia, 2016</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Klett, Timothy R.; Schenk, Christopher J.; Brownfield, Michael E.; Leathers-Miller, Heidi M.; Mercier, Tracey J.; Pitman, Janet K.; Tennyson, Marilyn E.</p> <p>2016-11-10</p> <p>Using a geology-based assessment methodology, the U.S. Geological Survey estimated mean continuous resources of 12 billion barrels of oil and 75 trillion cubic feet of gas in the Bazhenov Formation of the <span class="hlt">West</span> Siberian <span class="hlt">Basin</span> Province, Russia.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.water.usgs.gov/wri034065/','USGSPUBS'); return false;" href="http://pubs.water.usgs.gov/wri034065/"><span>Geohydrology, Geochemistry, and Ground-Water Simulation-Optimization of the Central and <span class="hlt">West</span> Coast <span class="hlt">Basins</span>, Los Angeles County, California</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Reichard, Eric G.; Land, Michael; Crawford, Steven M.; Johnson, Tyler D.; Everett, Rhett; Kulshan, Trayle V.; Ponti, Daniel J.; Halford, Keith L.; Johnson, Theodore A.; Paybins, Katherine S.; Nishikawa, Tracy</p> <p>2003-01-01</p> <p>Historical ground-water development of the Central and <span class="hlt">West</span> Coast <span class="hlt">Basins</span> in Los Angeles County, California through the first half of the 20th century caused large water-level declines and induced seawater intrusion. Because of this, the <span class="hlt">basins</span> were adjudicated and numerous ground-water management activities were implemented, including increased water spreading, construction of injection barriers, increased delivery of imported water, and increased use of reclaimed water. In order to improve the scientific basis for these water management activities, an extensive data collection program was undertaken, geohydrological and geochemical analyses were conducted, and ground-water flow simulation and optimization models were developed. In this project, extensive hydraulic, geologic, and chemical data were collected from new multiple-well monitoring sites. On the basis of these data and data compiled and collected from existing wells, the regional geohydrologic framework was characterized. For the purposes of modeling, the three-dimensional aquifer system was divided into four aquifer systems?the Recent, Lakewood, Upper San Pedro, and Lower San Pedro aquifer systems. Most pumpage in the two <span class="hlt">basins</span> is from the Upper San Pedro aquifer system. Assessment of the three-dimensional geochemical data provides insight into the sources of recharge and the movement and age of ground water in the study area. Major-ion data indicate the chemical character of water containing less than 500 mg/L dissolved solids generally grades from calcium-bicarbonate/sulfate to sodium bicarbonate. Sodium-chloride water, high in dissolved solids, is present in wells near the coast. Stable isotopes of oxygen and hydrogen provide information on sources of recharge to the <span class="hlt">basin</span>, including imported water and water originating in the San Fernando Valley, San Gabriel Valley, and the coastal plain and surrounding hills. Tritium and carbon-14 data provide information on relative ground-water ages. Water with</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2017JSAES..74...41C','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2017JSAES..74...41C"><span>Mesozoic lacustrine system in the Parnaíba <span class="hlt">Basin</span>, northeastern Brazil: Paleogeographic implications for <span class="hlt">west</span> Gondwana</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Cardoso, Alexandre Ribeiro; Nogueira, Afonso César Rodrigues; Abrantes, Francisco Romério; Rabelo, Cleber Eduardo Neri</p> <p>2017-03-01</p> <p>The fragmentation of the <span class="hlt">West</span> Gondwana during Early Triassic to Cretaceous was marked by intense climatic changes, concomitant with the establishment of extensive desertic/lacustrine systems. These deposits succeeded the emplacement and extrusion of lava flows, related to the pre-rift phase and initial opening of the Equatorial Atlantic Ocean. The thermal phase is recorded in the Upper Jurassic-Lower Cretaceous Pastos Bons Formation, exposed mainly in southeast parts of the Parnaíba <span class="hlt">Basin</span>, Northeastern Brazil. The sedimentary facies of this unit were grouped in two facies associations (FA), representative of a shallow lacustrine system, influenced by episodic hyperpycnal and oscillatory flows. Central lake facies association (FA1) is composed by laminated mudstone (Ml), sandstone/mudstone rhythmite (S/Mr) and sandstone with even-parallel lamination (Sel). Flysch-like delta front (FA2) consists in sandstones with wave structures (Sw), sandstones with even-parallel stratification (Ses), massive sandstones (Sm), sandstones with soft-sediment deformation structures (Sd) and laminated mudstones (Ml). FA1 was deposited in the deepest portions of the lake, characterized by low energy, episodically disturbed by siliciclastic influx. FA2 presents sandy deposits generated by unconfined flow, probably fed by ephemeral stream flows that generated thickening upward of tabular sandstone beds. The progressive filling of the lake resulted in recurrent shoaling up of the water level and reworking by wave action. The installation of Pastos Bons lakes was controlled by thermal subsidence, mainly in restricted depocenters. The siliciclastic fluvial inflow can be related to the adjacent humid desertic facies, formed under climatic attenuation, typical of post-Triassic period, with reduced biological activity. Smectite and abundant feldspars, in lacustrine facies, corroborate an arid climate, with incipient chemical weathering. The new facies and stratigraphic data present in this</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=4696814','PMC'); return false;" href="https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=4696814"><span>Spatio-Temporal Identification of Areas Suitable for <span class="hlt">West</span> Nile Disease in the Mediterranean <span class="hlt">Basin</span> and Central Europe</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>Conte, Annamaria; Candeloro, Luca; Ippoliti, Carla; Monaco, Federica; De Massis, Fabrizio; Bruno, Rossana; Di Sabatino, Daria; Danzetta, Maria Luisa; Benjelloun, Abdennasser; Belkadi, Bouchra; El Harrak, Mehdi; Declich, Silvia; Rizzo, Caterina; Hammami, Salah; Ben Hassine, Thameur; Calistri, Paolo; Savini, Giovanni</p> <p>2015-01-01</p> <p><span class="hlt">West</span> Nile virus (WNV) is a mosquito-transmitted Flavivirus belonging to the Japanese encephalitis antigenic complex of the Flaviviridae family. Its spread in the Mediterranean <span class="hlt">basin</span> and the Balkans poses a significant risk to human health and forces public health officials to constantly monitor the virus transmission to ensure prompt application of preventive measures. In this context, predictive tools indicating the areas and periods at major risk of WNV transmission are of paramount importance. Spatial analysis approaches, which use environmental and climatic variables to find suitable habitats for WNV spread, can enhance predictive techniques. Using the Mahalanobis Distance statistic, areas ecologically most suitable for sustaining WNV transmission were identified in the Mediterranean <span class="hlt">basin</span> and Central Europe. About 270 human and equine clinical cases notified in Italy, Greece, Portugal, Morocco, and Tunisia, between 2008 and 2012, have been considered. The environmental variables included in the model were altitude, slope, night time Land Surface Temperature, Normalized Difference Vegetation Index, Enhanced Vegetation Index, and daily temperature range. Seasonality of mosquito population has been modelled and included in the analyses to produce monthly maps of suitable areas for <span class="hlt">West</span> Nile Disease. Between May and July, the most suitable areas are located in Tunisia, Libya, Egypt, and North Cyprus. Summer/Autumn months, particularly between August and October, characterize the suitability in Italy, France, Spain, the Balkan countries, Morocco, North Tunisia, the Mediterranean coast of Africa, and the Middle East. The persistence of suitable conditions in December is confined to the coastal areas of Morocco, Tunisia, Libya, Egypt, and Israel. PMID:26717483</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/28230984','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/28230984"><span>2D Conductive Iron-Quinoid Magnets Ordering up to Tc = <span class="hlt">105</span> <span class="hlt">K</span> via Heterogenous Redox Chemistry.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>DeGayner, Jordan A; Jeon, Ie-Rang; Sun, Lei; Dincă, Mircea; Harris, T David</p> <p>2017-03-13</p> <p>We report the magnetism and conductivity for a redox pair of iron-quinoid metal-organic frameworks (MOFs). The oxidized compound, (Me2NH2)2[Fe2L3]·2H2O·6DMF (LH2 = 2,5-dichloro-3,6-dihydroxo-1,4-benzoquinone) was previously shown to magnetically order below 80 K in its solvated form, with the ordering temperature decreasing to 26 K upon desolvation. Here, we demonstrate this compound to exhibit electrical conductivity values up to σ = 1.4(7) × 10(-2) S/cm (Ea = 0.26(1) cm(-1)) and 1.0(3) × 10(-3) S/cm (Ea = 0.19(1) cm(-1)) in its solvated and desolvated forms, respectively. Upon soaking in a DMF solution of Cp2Co, the compound undergoes a single-crystal-to-single-crystal one-electron reduction to give (Cp2Co)1.43(Me2NH2)1.57[Fe2L3]·4.9DMF. Structural and spectroscopic analysis confirms this reduction to be ligand-based, and as such the trianionic framework is formulated as [Fe(III)2(L(3-•))3](3-). Magnetic measurements for this reduced compound reveal the presence of dominant intralayer metal-organic radical coupling to give a magnetically ordered phase below Tc = <span class="hlt">105</span> <span class="hlt">K</span>, one of the highest reported ordering temperatures for a MOF. This high ordering temperature is significantly increased relative to the oxidized compound, and stems from the overall increase in coupling strength afforded by an additional organic radical. In line with the high critical temperature, the new MOF exhibits magnetic hysteresis up to 100 K, as revealed by variable-field measurements. Finally, this compound is electrically conductive, with values up to σ = 5.1(3) × 10(-4) S/cm with Ea = 0.34(1) eV. Taken together, these results demonstrate the unique ability of metal-quinoid MOFs to simultaneously exhibit both high magnetic ordering temperatures and high electrical conductivity.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/5376744','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/5376744"><span><span class="hlt">West</span> Atlantic mesozoic carbonates: comparison of Baltimore Canyon and offshore Nova Scotian <span class="hlt">basins</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Eliuk, L.S.; Cearley, S.C.; Levesque, R.</p> <p>1986-05-01</p> <p>Results of exploratory drilling, by Shell Offshore Inc., and its partners, of the Late Jurassic-Early Cretaceous carbonate margin of the Baltimore Canyon (BC) <span class="hlt">basin</span> can be interpreted directly from the better understood, time-equivalent Nova Scotian (NS) <span class="hlt">basin</span> stratigraphy. The BC paleomargin was constructed in a depositional cycle of three successive stages: Oxfordian-early Kimmeridgian progradation, Kimmeridgian-Berriasian aggradation, Berriasian-Valanginian drowning. The upper two stages in NS are the Baccaro and Artimon members of the Abenaki formation. The progradation of the lower sequence in BC results from high clastic input and has a parallel (not age equivalent) in NS only in proximity to the Sable Island paleodelta. Both <span class="hlt">basins</span> have similar, complementary, shelf-edge environments that form a single water-depth-controlled biotic zonation. This zonation is: shallow-water stromatoporoid-hexacoral biostromes and reefs; deeper water stromatactis and thrombolitic mud mounds; and deep-water lithistid sponge reefs. Associated environments are oncolitic reef flats, reef-apron skeletal sands, slope reef debris from sponge and coral reefs, and back-reef mollusk-rich skeletal and skeletal-oolitic sands. Major differences between the <span class="hlt">basins</span> are the pinnacle reefs of BC and the contrast between the mud-rich skeletal and nonskeletal megafacies of NS versus the dominantly skeletal sand-rich BC sediments. The higher subsidence rates of BC may explain both differences.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2010AGUFM.H11F0869G','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2010AGUFM.H11F0869G"><span>Assessing Climate Risks on the Investment Plans in the Niger River <span class="hlt">Basin</span>, <span class="hlt">West</span> Africa</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Ghile, Y. B.; Brown, C. M.</p> <p>2010-12-01</p> <p>There is growing concern that the Niger River <span class="hlt">Basin</span> (NRB) system is vulnerable to climate variability and climate change. The projected impacts of climate change, in particular, may induce some potential risks to an investment plan of $7.8 billion for building new water infrastructures in the <span class="hlt">basin</span>. For this reason, water resource managers and policy makers seek the best possible sources of climate change projections and information to assist their decision making needs. In this presentation, we describe and demonstrate a bottom-up, risk-based framework for the analysis of climate impacts on water resources systems in the <span class="hlt">basin</span>. The process focuses on characterizing the spatial and temporal hydrologic variability with a hydrologic model, modeling the NRB system using the Mike <span class="hlt">Basin</span> model, identifying climate risks, and assessing those risks using climate information centered on 2030, 2050 and 2070 from multiple sources. Generally, the assessment indicates that some potential risks for hydro-electricity, navigation and environmental flows. The approach used in this study may help policy makers to understand the general pattern of climate change risks in the NRB, and it may assist them to address the multitude of future uncertainties that affect the investment plans in the NRB.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2013AGUFMMR23C..08B','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2013AGUFMMR23C..08B"><span>Contemporary stress and structural permeability in the Carnarvon <span class="hlt">Basin</span>, North <span class="hlt">West</span> Shelf</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Bailey, A. H.; King, R.; Holford, S. P.</p> <p>2013-12-01</p> <p>The Carnarvon <span class="hlt">Basin</span> in Western Australia is Australia's pre-eminent hydrocarbon province, yet the in-situ stress regime in this <span class="hlt">basin</span> is poorly defined and there is little to no understanding of the contribution that naturally occurring fractures make to structural permeability. In this study a large dataset of recent geophysical data from petroleum wells is analysed from the offshore Carnarvon <span class="hlt">Basin</span> in order to remedy this deficiency. Borehole failure features are known to be caused as a result of the in-situ stress regime, and be used to reliably identify the orientation of principle stresses. Over 290 borehole breakouts and drilling-induced tensile fractures were identified from resistivity image logs from 15 wells in the Carnarvon <span class="hlt">Basin</span>, giving a maximum horizontal stress orientation of approximately 100°N. This orientation shows little variation across the <span class="hlt">basin</span>. Furthermore, the magnitudes of the three principle stresses are calculated from geophysical well data. The resulting strike-slip faulting regime can be used to predict the reactivation potential of faults and fractures as well as to assess trap integrity. We also identified a total of 550 naturally occurring fractures using the same resistivity image logs. Fractures strike approximately NE-SE, with fractures that are aligned in the in-situ stress field optimally oriented for reactivation, and hence, likely to be open to fluid flow. Fractures are identifiable as being either resistive or conductive sinusoids on the resistivity image logs used in this study. Resistive fractures, of which 350 were identified, are considered to be cemented with electrically resistive cements (such as quartz or calcite) and thus closed to fluid flow. Conductive fractures, of which 200 were identified, are considered to be uncemented and open to fluid flow, and thus important for their possible contributions to permeability. Two 3D seismic datasets are scrutinised using 3D seismic attributes, notably complex multi</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/1987JVGR...33..263W','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/1987JVGR...33..263W"><span>Geochemical evidence for sundering of the <span class="hlt">West</span> Mariana arc in miocene ash from the Parece Vela <span class="hlt">Basin</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Warner, Russell J.; Flower, Martin F. J.; Rodolfo, Kelvin S.</p> <p>1987-10-01</p> <p>Glass and mineral fragments from discrete volcanic ash layers were sampled from DSDP/IPOD Site 450 in the Parece Vela <span class="hlt">Basin</span>, Philippine Sea and analyzed by electron microprobe. The ashes are interpreted as eruptive products of the adjacent <span class="hlt">West</span> Mariana arc system between 25 and 14 Ma B.P., and have compositions between basaltic andesite and rhyolite, and rarely, boninite. 'Continuous' chemical trends appear to reflect mixing of mafic and silicic magmas. 'Discontinuous' trends between these end-members are relatively few, and are consistent with 'liquid lines' produced by fractional crystallization. Andesitic tephra become progressively richer in MgO and CaO through the middle Miocene, while boninite appears towards the end of the sequence, between 14 and 15 Ma B.P. Coeval rhyolitic glasses become richer in K 2O and Na 2O, with maximum concentrations at about 15 Ma B.P. Chronologic changes in fractionation type and composition of parent magmas are interpreted to reflect the subaerial volcanic evolution of the <span class="hlt">West</span> Mariana arc. The appearance of boninite is believed to signal early stages of arc sundering, and corresponds temporally with regional uplift of the sea floor above the carbonate compensation depth, precursor to a new pulse of back-arc spreading.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70173434','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70173434"><span>Cambarus (Puncticambarus) smilax, a new species of crayfish (Crustacea: Decapoda: Cambaridae) from the Greenbrier River <span class="hlt">basin</span> of <span class="hlt">West</span> Virginia</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Loughman, Zachary J.; Simon, Thomas P.; Welsh, Stuart</p> <p>2011-01-01</p> <p>Cambarus (Puncticambarus) smilax is a stream-dwelling crayfish that appears to be endemic to the Greenbrier River <span class="hlt">basin</span> in the Valley and Ridge province of <span class="hlt">West</span> Virginia. Within the Greenbrier system it occurs primarily in tributaries to the Greenbrier mainstem, with stable populations in the East and <span class="hlt">West</span> Fork, and Thorny, Knapp, and Deer creeks. The new species is morphologically most similar to C. (P.) robustus, from which it can be distinguished by a combination of the following characters: adult palm length comprising 73–76% of palm width as opposed to 63–70% in C. (P.)robustus; ventral surface of chela of cheliped with 0–2 subpalmar tubercles compared to 3–6 subpalmar tubercles in C. (P.) robustus; lack of tubercles on the dorsal surface of chela; longer, more tapering, less rectangular rostrum (47–52% rostrum width/length ratio) compared to C. (P.) robustusshorter, less tapering rectangular rostrum (54–63% rostrum width/length ratio); and the central projection of the form-I male gonopod curved ≤90 degrees to the shaft.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/307858','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/307858"><span>Overview of the structural geology and tectonics of the Central <span class="hlt">Basin</span> Platform, Delaware <span class="hlt">Basin</span>, and Midland <span class="hlt">Basin</span>, <span class="hlt">West</span> Texas and New Mexico</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Hoak, T.; Sundberg, K.; Ortoleva, P.</p> <p>1998-12-31</p> <p>The structural geology and tectonics of the Permian <span class="hlt">Basin</span> were investigated using an integrated approach incorporating satellite imagery, aeromagnetics, gravity, seismic, regional subsurface mapping and published literature. The two primary emphases were on: (1) delineating the temporal and spatial evolution of the regional stress state; and (2) calculating the amount of regional shortening or contraction. Secondary objectives included delineation of basement and shallower fault zones, identification of structural style, characterization of fractured zones, analysis of surficial linear features on satellite imagery and their correlation to deeper structures. Gandu Unit, also known as Andector Field at the Ellenburger level and Goldsmith Field at Permian and younger reservoir horizons, is the primary area of interest and lies in the northern part of Ector county. The field trends northwest across the county line into Andrews County. The field(s) are located along an Ellenburger thrust anticline trap on the eastern margin of the Central <span class="hlt">Basin</span> Platform.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/127653','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/127653"><span>Sequence stratigraphic setting of the Priob Field within the Neocomian prograding complex of the <span class="hlt">West</span> Siberian <span class="hlt">Basin</span>, Russia</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Mkrtchyan, O.M.; Armentrout, J.M.</p> <p>1995-08-01</p> <p>The Neocomian strata of the <span class="hlt">West</span> Siberian <span class="hlt">Basin</span> are a prograding complex unique in its aerial extent, structure and hydrocarbon reserves, such as Priob Field in the Ob River area. Interpretation of the <span class="hlt">basin</span> history is based on well data and seismic reflection profile. As many as 45 transgressive-regressive depositional sequences, called cyclites, prograde into the deep-water <span class="hlt">basin</span> formed during Late Jurassic and Early Cretaceous. Each transgressive-regressive sequence is defined by a coarsening-upward cycle of shale, siltstone and sandstone, and is considered a chronostratigraphic subdivision of the prograding complex. Each sequence boundary is regionally correlatable on seismic reflection profiles, and is identified on well logs by sharp contacts between regressive sandstones below and thin transgressive shales above. Subordinate progradational wedges are locally developed within these sequences and contain major hydrocarbon reserves. These depositional wedges map as lens-shaped packages downlapping the outermost shelf (Priob zone) or as narrow progradational wedges downlapping the foreset reflections of the slope clinoforms immediately beyond the shelf break (Sugmut zone). Regressive facies of the shelf consist of thin but wide spread sandstones that also contain major hydrocarbon reserves. Pervasive sediment starvation during the Late Neocomian resulted in deposition of thin regionally extensive shales that provide top-seal to the Neocomian hydrocarbon system. At the Priob field, a deep erosional incision has been mapped at the AS11 shelf-edge. Sands transported through this incised valley were deposited as a prograding wedge along the shoreline, forming the reservoir facies for the Priob hydrocarbon accumulation. Stratigraphic aspects of the Priob trap include top and lateral shale seals and subtle regional structural tilt. Types of stratigraphic traps are discussed and the possibility of predicting additional such traps are analyzed.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=4655561','PMC'); return false;" href="https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=4655561"><span>Collapse of the <span class="hlt">West</span> Antarctic Ice Sheet after local destabilization of the Amundsen <span class="hlt">Basin</span></span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>Feldmann, Johannes; Levermann, Anders</p> <p>2015-01-01</p> <p>The future evolution of the Antarctic Ice Sheet represents the largest uncertainty in sea-level projections of this and upcoming centuries. Recently, satellite observations and high-resolution simulations have suggested the initiation of an ice-sheet instability in the Amundsen Sea sector of <span class="hlt">West</span> Antarctica, caused by the last decades’ enhanced basal ice-shelf melting. Whether this localized destabilization will yield a full discharge of marine ice from <span class="hlt">West</span> Antarctica, associated with a global sea-level rise of more than 3 m, or whether the ice loss is limited by ice dynamics and topographic features, is unclear. Here we show that in the Parallel Ice Sheet Model, a local destabilization causes a complete disintegration of the marine ice in <span class="hlt">West</span> Antarctica. In our simulations, at 5-km horizontal resolution, the region disequilibrates after 60 y of currently observed melt rates. Thereafter, the marine ice-sheet instability fully unfolds and is not halted by topographic features. In fact, the ice loss in Amundsen Sea sector shifts the catchment's ice divide toward the Filchner–Ronne and Ross ice shelves, which initiates grounding-line retreat there. Our simulations suggest that if a destabilization of Amundsen Sea sector has indeed been initiated, Antarctica will irrevocably contribute at least 3 m to global sea-level rise during the coming centuries to millennia. PMID:26578762</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/26578762','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/26578762"><span>Collapse of the <span class="hlt">West</span> Antarctic Ice Sheet after local destabilization of the Amundsen <span class="hlt">Basin</span>.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Feldmann, Johannes; Levermann, Anders</p> <p>2015-11-17</p> <p>The future evolution of the Antarctic Ice Sheet represents the largest uncertainty in sea-level projections of this and upcoming centuries. Recently, satellite observations and high-resolution simulations have suggested the initiation of an ice-sheet instability in the Amundsen Sea sector of <span class="hlt">West</span> Antarctica, caused by the last decades' enhanced basal ice-shelf melting. Whether this localized destabilization will yield a full discharge of marine ice from <span class="hlt">West</span> Antarctica, associated with a global sea-level rise of more than 3 m, or whether the ice loss is limited by ice dynamics and topographic features, is unclear. Here we show that in the Parallel Ice Sheet Model, a local destabilization causes a complete disintegration of the marine ice in <span class="hlt">West</span> Antarctica. In our simulations, at 5-km horizontal resolution, the region disequilibrates after 60 y of currently observed melt rates. Thereafter, the marine ice-sheet instability fully unfolds and is not halted by topographic features. In fact, the ice loss in Amundsen Sea sector shifts the catchment's ice divide toward the Filchner-Ronne and Ross ice shelves, which initiates grounding-line retreat there. Our simulations suggest that if a destabilization of Amundsen Sea sector has indeed been initiated, Antarctica will irrevocably contribute at least 3 m to global sea-level rise during the coming centuries to millennia.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/2202','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/2202"><span>Application of Advanced Reservoir Characterization, Simulation, and Production Optimization Strategies to Maximize Recovery in Slope and <span class="hlt">Basin</span> Clastic Reservoirs, <span class="hlt">West</span> Texas (Delaware <span class="hlt">Basin</span>)</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Andrew G. Cole; George B. Asquith; Jose I. Guzman; Mark D. Barton; Mohammad A. Malik; Shirley P. Dutton; Sigrid J. Clift</p> <p>1998-04-01</p> <p>The objective of this Class III project is to demonstrate that detailed reservoir characterization of clastic reservoirs in <span class="hlt">basinal</span> sandstones of the Delaware Mountain Group in the Delaware <span class="hlt">Basin</span> of <span class="hlt">West</span> Texas and New Mexico is a cost-effective way to recover more of the original oil in place by strategic infill-well placement and geologically based enhanced oil recovery. The study focused on the Ford Geraldine unit, which produces from the upper Bell Canyon Formation (Ramsey sandstone). Reservoirs in this and other Delaware Mountain Group fields have low producibility (average recovery <14 percent of the original oil in place) because of a high degree of vertical and lateral heterogeneity caused by depositional processes and post-depositional diagenetic modification. Outcrop analogs were studied to better interpret the depositional processes that formed the reservoirs at the Ford Geraldine unit and to determine the dimensions of reservoir sandstone bodies. Facies relationships and bedding architecture within a single genetic unit exposed in outcrop in Culberson County, Texas, suggest that the sandstones were deposited in a system of channels and levees with attached lobes that initially prograded basinward, aggraded, and then turned around and stepped back toward the shelf. Channel sandstones are 10 to 60 ft thick and 300 to 3,000 ft wide. The flanking levees have a wedge-shaped geometry and are composed of interbedded sandstone and siltstone; thickness varies from 3 to 20 ft and length from several hundred to several thousands of feet. The lobe sandstones are broad lens-shaped bodies; thicknesses range up to 30 ft with aspect ratios (width/thickness) of 100 to 10,000. Lobe sandstones may be interstratified with laminated siltstones.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/1989E%26PSL..93..371C','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/1989E%26PSL..93..371C"><span>Gravity and magnetic studies of crustal structure across the Porcupine <span class="hlt">basin</span> <span class="hlt">west</span> of Ireland</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Conroy, J. J.; Brock, A.</p> <p>1989-07-01</p> <p>Gravity, magnetic and seismic data from a profile across the Porcupine <span class="hlt">basin</span> are used to suggest a model for the crustal structure in the region. The 280 km long profile bears WSW off the southwest coast of Ireland, and overlaps partially with the COOLE 3A and 3B lines of Makris et al. [13]. The gravity data are processed to produce an isostatic residual anomaly which is then modelled by two-and-a-half dimensional methods using the seismic data to provide geometrical constraints. Similar modelling techniques are used for the magnetic data. The final model shows crystalline crust which thins from 28 km at the eastern end of the profile to less than 8 km beneath the central part of the <span class="hlt">basin</span>. The thinned crust is intruded by dense magnetic bodies, whilst the eastern margin is underlain by a large low-density body which is assumed to be a granite. These new findings have parallels in other <span class="hlt">basins</span> on thinned and rifted crust.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_6");'>6</a></li> <li><a href="#" onclick='return showDiv("page_7");'>7</a></li> <li class="active"><span>8</span></li> <li><a href="#" onclick='return showDiv("page_9");'>9</a></li> <li><a href="#" onclick='return showDiv("page_10");'>10</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_8 --> <div id="page_9" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_7");'>7</a></li> <li><a href="#" onclick='return showDiv("page_8");'>8</a></li> <li class="active"><span>9</span></li> <li><a href="#" onclick='return showDiv("page_10");'>10</a></li> <li><a href="#" onclick='return showDiv("page_11");'>11</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="161"> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/wsp/2384/report.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/wsp/2384/report.pdf"><span>Effects of underground mining and mine collapse on the hydrology of selected <span class="hlt">basins</span> in <span class="hlt">West</span> Virginia</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Hobba, William A.</p> <p>1993-01-01</p> <p>The effects of underground mining and mine collapse on areal hydrology were determined at one site where the mined bed of coal lies above major streams and at two sites where the bed of coal lies below major streams. Subsidence cracks observed at land surface generally run parallel to predominant joint sets in the rocks. The mining and subsidence cracks increase hydraulic conductivity and interconnection of water-bearing rock units, which in turn cause increased infiltration of precipitation and surface water, decreased evapotranspiration, and higher base flows in some small streams. Water levels in observation wells in mined areas fluctuate as much as 100 ft annually. Both gaining and losing streams are found in mined areas. Mine pumpage and drainage can cause diversion of water underground from one <span class="hlt">basin</span> to another. Areal and single-well aquifer tests indicated that near-surface rocks have higher transmissivity in a mine-subsided <span class="hlt">basin</span> than in unmined <span class="hlt">basins</span>. Increased infiltration and circulation through shallow subsurface rocks increase dissolved mineral loads in streams, as do treated and untreated contributions from mine pumpage and drainage. Abandoned and flooded underground mines make good reservoirs because of their increased transmissivity and storage. Subsidence cracks were not detectable by thermal imagery, but springs and seeps were detectable.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/wri/1987/4010/report.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/wri/1987/4010/report.pdf"><span>Relation between ground water and surface water in the Hillsborough River <span class="hlt">basin</span>, <span class="hlt">west</span>-central Florida</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Wolansky, R.M.; Thompson, T.H.</p> <p>1987-01-01</p> <p>The relation between groundwater and surface water in the Hillsborough River <span class="hlt">basin</span> was defined through the use of: seismic-reflection profiling along selected reaches of the Hillsborough River, and evaluation of streamflow, rainfall, groundwater levels, water quality, and geologic data. Major municipal well fields in the <span class="hlt">basin</span> are Morris Bridge and Cypress Creek where an averages of 15.3 and 30.0 million gal/day (mgd), respectively, were pumped in 1980. Mean annual rainfall for the study area is 53.7 inches. Average rainfall for 1980, determined from eight rainfall stations, was 49.7 inches. Evapotranspiration, corrected for the 5% of the <span class="hlt">basin</span> that is standing water, was 35.7 in/year. The principal geohydrologic units in the <span class="hlt">basin</span> are the surficial aquifer, the intermediate aquifer and confining beds, the Upper Floridan aquifer, the middle confining unit, and the Lower Floridan aquifer. Total pumpage of groundwater in 1980 was 98.18 mgd. The surficial aquifer and the intermediate aquifer are not used for major groundwater supply in the <span class="hlt">basin</span>. Continuous marine seismic-reflection data collected along selected reaches of the Hillsborough River were interpreted to define the riverbed profile, the thickness of surficial deposits, and the top of persistent limestone. Major areas of groundwater discharge near the Hillsborough River and its tributaries are the wetlands adjacent to the river between the Zephyrhills gaging stations and Fletcher Avenue and the wetlands adjacent to Cypress Creek. An estimated 20 mgd seeps upward from the Upper Floridan aquifer within those wetland areas. The runoff/sq mi is greater at the Zephyrhills station than at Morris Bridge. However, results of groundwater flow models and potentiometric-surface maps indicate that groundwater is flowing upward along the Hillsborough River between the Zephyrhills gage and the Morris Bridge gage. This upward leakage is lost to evapotranspiration. An aquifer test conducted in 1978 at the Morris Bridge well</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/sir/2009/5079/','USGSPUBS'); return false;" href="https://pubs.usgs.gov/sir/2009/5079/"><span>Evapotranspiration from the Lower Walker River <span class="hlt">Basin</span>, <span class="hlt">West</span>-Central Nevada, Water Years 2005-07</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Allander, Kip K.; Smith, J. LaRue; Johnson, Michael J.</p> <p>2009-01-01</p> <p>Evapotranspiration is the ultimate path of outflow of nearly all water from the Lower Walker River <span class="hlt">basin</span>. Walker Lake is the terminus of the topographically closed Walker River <span class="hlt">basin</span>, and the lake level has been declining at an average rate of about 1.6 feet per year (ft/yr) since 1917. As a result of the declining lake level, dissolved-solids concentrations are increasingly threatening the fishery and ecosystem health of the lake. Uncertainties in the water budget components of the Lower Walker River <span class="hlt">basin</span> led the U.S. Geological Survey, in cooperation with the Bureau of Reclamation, to undertake an investigation to refine estimates of the water budget. Evapotranspiration from the Lower Walker River <span class="hlt">basin</span> represents a major component of this water budget. The specific objectives of this report are to provide estimates of total and net evapotranspiration for water years 2005-07 for areas in the Lower Walker River <span class="hlt">basin</span> in which annual evapotranspiration exceeds annual precipitation, and to summarize these results for areas of similar vegetation and soil characteristics, hydrographic subareas, and Walker Lake and Weber Reservoir. The three hydrographic subareas include the area along Walker River north of Walker Lake, the area of and adjacent to Walker Lake, and the area south of Walker Lake. Areas of annual evapotranspiration exceeding annual precipitation were identified and mapped in the field and were further delineated using remote-sensing analysis. These areas were classified into 10 evapotranspiration units. A network of 11 evapotranspiration stations was operated in natural and agricultural vegetation and on Walker Lake. Measured evapotranspiration rates ranged from 0.5 ft/yr at a sparsely vegetated desert shrub site to 5.0 ft/yr from Walker Lake. The greatest evapotranspiration rate on land was 4.1 ft/yr at an irrigated alfalfa field, and the greatest rate for natural vegetation was 3.9 ft/yr in a riparian community along Walker River. At an</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2012JGeo...54...29D','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2012JGeo...54...29D"><span>Influence of Neoproterozoic tectonic fabric on the origin of the Potiguar <span class="hlt">Basin</span>, northeastern Brazil and its links with <span class="hlt">West</span> Africa based on gravity and magnetic data</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>de Castro, David Lopes; Bezerra, Francisco H. R.; Sousa, Maria O. L.; Fuck, Reinhardt A.</p> <p>2012-03-01</p> <p>The Potiguar <span class="hlt">Basin</span> is a ˜6,000 m thick aborted NE-trending rift that was formed during the Cretaceous in the continental margin of northeastern Brazil. Its ˜E-W-trending offshore faults form part of the successful continental margin rift that evolved into the South Atlantic Ocean. The region represents one of the most significant pre-Pangea breakup piercing points between eastern South America and <span class="hlt">West</span> Africa. We used gravity, aeromagnetic, and geological data to assess the role of reactivated Precambrian shear zones and major terrain boundaries in the development of the Potiguar <span class="hlt">Basin</span> from the Cretaceous to the Cenozoic. We also looked for possible links between these structures in northeastern Brazil and their continuation in <span class="hlt">West</span> Africa. Our results indicate that the major fault systems of the Potiguar <span class="hlt">Basin</span> were superimposed on the Precambrian fabric. Both gravity and magnetic maps show lineaments related to the shear zones and major terrain boundaries in the Precambrian crystalline basement, which also characterize the architecture of the rift. For example, the Carnaubais fault, the master fault of the rift system, represents the reactivation of the Portalegre shear zone, the major tectonic boundary between Precambrian terrains in the crystalline basement. In addition, part of the Moho topography is controlled by these shear zones and developed during the period of main rift extension in the Neocomian. The shear zones bounding the Potiguar rift system continue in <span class="hlt">West</span> Africa around and underneath the Benue <span class="hlt">Basin</span>, where fault reactivation also took place.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/896540','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/896540"><span>Geologic Controls of Hydrocarbon Occurrence in the Appalachian <span class="hlt">Basin</span> in Eastern Tennessee, Southwestern Virginia, Eastern Kentucky, and Southern <span class="hlt">West</span> Virginia</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Hatcher, Robert D</p> <p>2005-11-30</p> <p>This report summarizes the accomplishments of a three-year program to investigate the geologic controls of hydrocarbon occurrence in the southern Appalachian <span class="hlt">basin</span> in eastern Tennessee, southwestern Virginia, eastern Kentucky, and southern <span class="hlt">West</span> Virginia. The project: (1) employed the petroleum system approach to understand the geologic controls of hydrocarbons; (2) attempted to characterize the P-T parameters driving petroleum evolution; (3) attempted to obtain more quantitative definitions of reservoir architecture and identify new traps; (4) is worked with USGS and industry partners to develop new play concepts and geophysical log standards for subsurface correlation; and (5) geochemically characterized the hydrocarbons (cooperatively with USGS). Third-year results include: All project milestones have been met and addressed. We also have disseminated this research and related information through presentations at professional meetings, convening a major workshop in August 2003, and the publication of results. Our work in geophysical log correlation in the Middle Ordovician units is bearing fruit in recognition that the criteria developed locally in Tennessee and southern Kentucky are more extendible than anticipated earlier. We have identified a major 60 mi-long structure in the western part of the Valley and Ridge thrust belt that has been successfully tested by a local independent and is now producing commercial amounts of hydrocarbons. If this structure is productive along strike, it will be one of the largest producing structures in the Appalachians. We are completing a more quantitative structural reconstruction of the Valley and Ridge and Cumberland Plateau than has been made before. This should yield major dividends in future exploration in the southern Appalachian <span class="hlt">basin</span>. Our work in mapping, retrodeformation, and modeling of the Sevier <span class="hlt">basin</span> is a major component of the understanding of the Ordovician petroleum system in this region. Prior to our</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2015AGUFMNH51E1945A','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2015AGUFMNH51E1945A"><span>Trends and Projections of Climatic Extremes in the Black Volta <span class="hlt">Basin</span>, <span class="hlt">West</span> Africa: Towards Climate Change Adaptation.</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Aziz, F.</p> <p>2015-12-01</p> <p>The water resources of the Black Volta <span class="hlt">Basin</span> in <span class="hlt">West</span> Africa constitute a major resource for the four countries (Burkina Faso, Ghana, Côte d'Ivoire, Mali) that share it. For Burkina Faso and Ghana, the river is the main natural resource around which the development of the diverse sectors of the two economies is built. Whereas Ghana relies heavily on the river for energy, land-locked Burkina Faso continuously develops the water for agricultural purposes. Such important role of the river makes it an element around which there are potential conflicts: either among riparian countries or within the individual countries themselves. This study documents the changes in temperature and precipitation extremes in the Black Volta <span class="hlt">Basin</span> region for the past (1981-2010) and makes projections for the mid-late 21st century (2051-2080) under two emission scenarios; RCP 2.6 and RCP 8.5. The Expert Team on Climate Change Detection and Indices (ETCCDI) temperature- and precipitation-based indices are computed with the RClimdex software. Observed daily records and downscaled CORDEX data of precipitation and maximum and minimum temperatures are used for historical and future trend analysis respectively. In general low emission scenarios show increases in the cold extremes. The region shows a consistent pattern of trends in hot extremes for the 1990's. An increasing trend in hot extremes is expected in the future under RCP 8.5 while RCP 2.5 shows reductions in hot extremes. Regardless of the emission scenario, projections show more frequent hot nights in the 21st century. Generally, the region shows variability in trends for future extreme precipitation indices with only a few of the trends being statistically significant (5% level). Results obtained provide a basic and first step to understanding how climatic extremes have been changing in the Volta <span class="hlt">Basin</span> region and gives an idea of what to expect in the future. Such studies will also help in making informed decisions on water management</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.water.usgs.gov/sir2004-5067/','USGSPUBS'); return false;" href="http://pubs.water.usgs.gov/sir2004-5067/"><span>Ground-water quality of coastal aquifer systems in the <span class="hlt">West</span> Coast <span class="hlt">Basin</span>, Los Angeles County, California, 1999-2002</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Land, Michael; Reichard, Eric G.; Crawford, Steven M.; Everett, Rhett; Newhouse, Mark W.; Williams, Colin F.</p> <p>2004-01-01</p> <p>The extensive use of ground water throughout the Central and <span class="hlt">West</span> Coast <span class="hlt">Basins</span> of Los Angeles County during the first half of the 20th century resulted in declining water levels, widespread seawater intrusion, and deterioration of water quality along most reaches of the coast. In order to control seawater intrusion in the <span class="hlt">West</span> Coast <span class="hlt">Basin</span>, freshwater is injected into a series of wells at two seawater barrier projects. In order to better understand the processes of seawater intrusion and the efficiency of current barrier operation, data were collected from multiple-well monitoring sites installed by the U.S. Geological Survey, from local observation wells, and from production wells. The occurrence and areal extent of native, saline, and recently injected ground water near the coast were defined through the collection and analysis of inorganic and isotopic water-quality data and geophysical logs. Most water in the <span class="hlt">West</span> Coast <span class="hlt">Basin</span> with a dissolved-solids concentration less than 500 milligrams per liter generally has a sodium-bicarbonate to sodium/calcium-bicarbonate character. Water with a dissolved-solids concentration greater than 1,000 milligrams per liter also contains variable amounts of calcium and sodium, but chloride is predominant. Most of these high-dissolved-solids wells are perforated in the Upper aquifer systems; several have dissolved-chloride values near that of seawater. Elevated chloride concentrations were measured at many wells in both the Upper and Lower aquifer systems inland from the barrier projects. Although water levels have increased in many wells over the last 30 years, some of the wells do not show a corresponding decrease in dissolved chloride. A detailed assessment of saline ground water was provided by examining the ratios of chloride to bromide, iodide, and boron. Seawater-freshwater mixing lines were constructed using all three ratios. These ion ratios also identify water affected by mixing with injected imported water and oil</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2016ThApC.tmp..221Z','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2016ThApC.tmp..221Z"><span>Detection and attribution of climate change at regional scale: case study of Karkheh river <span class="hlt">basin</span> in the <span class="hlt">west</span> of Iran</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Zohrabi, Narges; Goodarzi, Elahe; Massah Bavani, Alireza; Najafi, Husain</p> <p>2016-09-01</p> <p>This research aims at providing a statistical framework for detection and attribution of climate variability and change at regional scale when at least 30 years of observation data are available. While extensive research has been done on detecting significant observed trends in hydroclimate variables and attribution to anthropogenic greenhouse gas emissions in large continents, less attention has been paid for regional scale analysis. The latter is mainly important for adaptation to climate change in different sectors including but not limited to energy, agriculture, and water resources planning and management, and it is still an open discussion in many countries including the <span class="hlt">West</span> Asian ones. In the absence of regional climate models, an informative framework is suggested providing useful insights for policymakers. It benefits from general flexibility, not being computationally expensive, and applying several trend tests to analyze temporal variations in temperature and precipitation (gradual and step changes). The framework is implemented for a very important river <span class="hlt">basin</span> in the <span class="hlt">west</span> of Iran. In general, some increasing and decreasing trends of the interannual precipitation and temperature have been detected. For precipitation annual time series, a reducing step was seen around 1996 compared with the gradual change in most of the stations, which have not experience a dramatical change. The range of natural forcing is found to be ±76 % for precipitation and ±1.4 °C for temperature considering a two-dimensional diagram of precipitation and temperature anomalies from 1000-year control run of global climate model (GCM). Findings out of applying the proposed framework may provide useful insights into how to approach structural and non-structural climate change adaptation strategies from central governments.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/5766359','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/5766359"><span>Distribution, lithology and ages of late Cenozoic volcanism on the eastern margin of the Great <span class="hlt">Basin</span>, <span class="hlt">West</span>-Central Utah</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Nash, W.P.</p> <p>1986-01-01</p> <p>The eastern margin of the <span class="hlt">Basin</span> and Range province in central Utah is the locus of late Cenozoic volcanic activity and has witnessed several volcanic episodes within the last three million years. The Twin Peaks volcanic center became active 2.7 m.y. ago producing rhyodacite and rhyolite from a shallow silicic magma body accompanied by voluminous eruptions of basalt. Between about 1 and 0.3 m.y. ago there were eruptions of high silica rhyolite from a deep-seated magma source beneath the Mineral Mountains together with primitive and strongly fractionated mafic magmas of the Cove Fort subprovince. Within this volcanic area are two localities, Roosevelt Hot Springs and Sulfurdale, which have high temperature waters at or near the surface. To the north in the Black Rock Desert, volcanism extended from 1.5 m.y to only several hundred years ago. The activity was dominated by basaltic eruptions, but the area contains the youngest known rhyolite body in Utah (0.4 m.y.). Volcanic vents are located along major crustal discontinuities in the Black Rock Desert, along ring fracture systems at Twin Peaks, and are aligned along trends of north-south normal faulting in the Mineral Mountains and Cove Fort areas. The localization of volcanism is consistent with high strain rates on a regional scale associated with extension of the <span class="hlt">Basin</span> and Range. The variety of lithologies observed is consistent with a model of fundamentally basaltic magmatism which augments melting in the lower crust to produce silicic magmas. The majority of the mafic magmas that reach the surface are modified by fractionation with the most primitive varieties erupted to the <span class="hlt">west</span>.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/425602','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/425602"><span>A petroliferous transform-margin <span class="hlt">basin</span>, Cote d`Ivoire, <span class="hlt">West</span> Africa</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Harms, J.C.; Bruso, J.M. Jr.; Wallace, R.L.; Canales, J.A.</p> <p>1996-12-31</p> <p>Break-up transform margins, formed by large dominantly strike-slip faults as continents separate, are distinct in structural style and stratigraphic sequence from subduction or purely extensional margins. A continental margin defined by such a transform zone is sharp, precipitous, and places an essentially complete continental crust abruptly against oceanic or highly attenuated continental crust. Structures develop in stress fields dominated by horizontal translation, with an overprint of uplift and subsidence related to thermal effects of a laterally migrating asthenosphere plume. Stratigraphic sequences begin with relatively deep-water lacustrine deposits and are followed by marine conditions as ocean connections develop. Because bathymetry tends to be steep across the transform zone, marine deposits along this zone represent slope environments with many erosional canyons and canyons fills, and these facies are vertically stacked through time. The offshore Cote d`Ivoire <span class="hlt">Basin</span> is an excellent example of a transform margin documented by more than 110 wells, an extensive 2-D seismic grid, a growing number of 3-D surveys, and several productive fields. The sedimentary section exceeds 5000m, beginning with Aptian(?)-Albian deep lacustrine facies. Marine incursion occurred in the Albian, followed by deformation, uplift, and erosion in later Albian. A series of major uplifts developed offshore along strands of the St. Paul fracture zone. The uplifts contain many SE-trending normal splay faults. The uplifts and NE-tilted fault blocks are the major petroleum targets within the Albian section. Upper Cretaceous petroleum traps are mainly related to stratigraphic variations caused by submarine canyon cutting and filling. The Cote d`lvoire <span class="hlt">Basin</span> provides a valuable model of transform margin processes and petroleum occurrences.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/6574430','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/6574430"><span>A petroliferous transform-margin <span class="hlt">basin</span>, Cote d'Ivoire, <span class="hlt">West</span> Africa</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Harms, J.C. ); Bruso, J.M. Jr.; Wallace, R.L.; Canales, J.A. )</p> <p>1996-01-01</p> <p>Break-up transform margins, formed by large dominantly strike-slip faults as continents separate, are distinct in structural style and stratigraphic sequence from subduction or purely extensional margins. A continental margin defined by such a transform zone is sharp, precipitous, and places an essentially complete continental crust abruptly against oceanic or highly attenuated continental crust. Structures develop in stress fields dominated by horizontal translation, with an overprint of uplift and subsidence related to thermal effects of a laterally migrating asthenosphere plume. Stratigraphic sequences begin with relatively deep-water lacustrine deposits and are followed by marine conditions as ocean connections develop. Because bathymetry tends to be steep across the transform zone, marine deposits along this zone represent slope environments with many erosional canyons and canyons fills, and these facies are vertically stacked through time. The offshore Cote d'Ivoire <span class="hlt">Basin</span> is an excellent example of a transform margin documented by more than 110 wells, an extensive 2-D seismic grid, a growing number of 3-D surveys, and several productive fields. The sedimentary section exceeds 5000m, beginning with Aptian( )-Albian deep lacustrine facies. Marine incursion occurred in the Albian, followed by deformation, uplift, and erosion in later Albian. A series of major uplifts developed offshore along strands of the St. Paul fracture zone. The uplifts contain many SE-trending normal splay faults. The uplifts and NE-tilted fault blocks are the major petroleum targets within the Albian section. Upper Cretaceous petroleum traps are mainly related to stratigraphic variations caused by submarine canyon cutting and filling. The Cote d'lvoire <span class="hlt">Basin</span> provides a valuable model of transform margin processes and petroleum occurrences.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2011AGUFM.T11A2276M','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2011AGUFM.T11A2276M"><span>Structural Constraints and Earthquake Recurrence Estimates for the <span class="hlt">West</span> Tahoe-Dollar Point Fault, Lake Tahoe <span class="hlt">Basin</span>, California</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Maloney, J. M.; Driscoll, N. W.; Kent, G.; Brothers, D. S.; Baskin, R. L.; Babcock, J. M.; Noble, P. J.; Karlin, R. E.</p> <p>2011-12-01</p> <p>Previous work in the Lake Tahoe <span class="hlt">Basin</span> (LTB), California, identified the <span class="hlt">West</span> Tahoe-Dollar Point Fault (WTDPF) as the most hazardous fault in the region. Onshore and offshore geophysical mapping delineated three segments of the WTDPF extending along the western margin of the LTB. The rupture patterns between the three WTDPF segments remain poorly understood. Fallen Leaf Lake (FLL), Cascade Lake, and Emerald Bay are three sub-<span class="hlt">basins</span> of the LTB, located south of Lake Tahoe, that provide an opportunity to image primary earthquake deformation along the WTDPF and associated landslide deposits. We present results from recent (June 2011) high-resolution seismic CHIRP surveys in FLL and Cascade Lake, as well as complete multibeam swath bathymetry coverage of FLL. Radiocarbon dates obtained from the new piston cores acquired in FLL provide age constraints on the older FLL slide deposits and build on and complement previous work that dated the most recent event (MRE) in Fallen Leaf Lake at ~4.1-4.5 k.y. BP. The CHIRP data beneath FLL image slide deposits that appear to correlate with contemporaneous slide deposits in Emerald Bay and Lake Tahoe. A major slide imaged in FLL CHIRP data is slightly younger than the Tsoyowata ash (7950-7730 cal yrs BP) identified in sediment cores and appears synchronous with a major Lake Tahoe slide deposit (7890-7190 cal yrs BP). The equivalent age of these slides suggests the penultimate earthquake on the WTDPF may have triggered them. If correct, we postulate a recurrence interval of ~3-4 k.y. These results suggest the FLL segment of the WTDPF is near its seismic recurrence cycle. Additionally, CHIRP profiles acquired in Cascade Lake image the WTDPF for the first time in this sub-<span class="hlt">basin</span>, which is located near the transition zone between the FLL and Rubicon Point Sections of the WTDPF. We observe two fault-strands trending N45°W across southern Cascade Lake for ~450 m. The strands produce scarps of ~5 m and ~2.7 m, respectively, on the lake</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70019389','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70019389"><span>Ramah Member of the Crevasse Canyon Formation - A new stratigraphic unit in the Zuni <span class="hlt">Basin</span>, <span class="hlt">west</span>-central New Mexico</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Anderson, O.J.; Stricker, G.D.</p> <p>1996-01-01</p> <p>Nonmarine deposition accompanying and following a regression of the Cretaceous Interior Seaway during late Turonian time left a sedimentary sequence consisting of fluvial channel sandstones, thin overbank sandstones, and paludal shales containing thin coal beds. This unit is herein designated the Ramah Member of the Crevasse Canyon Formation. The Ramah Member is locally well exposed in the Zuni <span class="hlt">Basin</span> of <span class="hlt">west</span>-central New Mexico where it rests on the Gallup Sandstone (marine) and is overlain by the distinctive, feldspathic Torrivio Member of the Crevasse Canyon Formation (formerly of the Gallup Sandstone) Near Ramah, New Mexico the sequence overlies the F member of the Gallup but northward it overlies progressively younger members. These younger members are discrete sand-stone units associated with minor oscillations of relative sea level during a major regional-scale regression. North and east of Puerco Gap, near Gallup. New Mexico, the Ramah Member thins appreciably, and where unmappable it may be included with the Torrivio Member Southward from Gallup in the Zuni <span class="hlt">Basin</span>. the Ramah locally approaches 150 ft in thickness and contains minable coal beds. The interval was previously referred to as the coal-bearing member of the Gallup (Mapel and Yesberger, 1985) or the Ramah unit (Anderson and Stricker, 1904). In the northern part of the Zuni <span class="hlt">Basin</span> a problem may exist locally in determinig the top of the Ramah Member. This is due to the presence of fluviel sandstone with coarse-grained facies that looks much the s ame as the Torrivio Member, but underlines it Two criteria may be employed to distiguish the lower sandstone from the Torrivio and properly place it in the strartigraphic succession: (1) the lower sandstone is generally not as feldspathic as the Torrivio nor do the coarse-grained facies contain pebble-size material; and (2) the lower sandstone is not nearly as widespread as the overlying Torrivio. which has a blanket geometry. The type section of the Ramah</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/sir/2014/5233/pdf/sir2014-5233.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/sir/2014/5233/pdf/sir2014-5233.pdf"><span>Water quality of groundwater and stream base flow in the Marcellus Shale Gas Field of the Monongahela River <span class="hlt">Basin</span>, <span class="hlt">West</span> Virginia, 2011-12</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Chambers, Douglas B.; Kozar, Mark D.; Messinger, Terence; Mulder, Michon L.; Pelak, Adam J.; White, Jeremy S.</p> <p>2015-01-01</p> <p>This study provides a baseline of water-quality conditions in the Monongahela River <span class="hlt">Basin</span> in <span class="hlt">West</span> Virginia during the early phases of development of the Marcellus Shale gas field. Although not all inclusive, the results of this study provide a set of reliable water-quality data against which future data sets can be compared and the effects of shale-gas development may be determined.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2011GGG....12OAF03C','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2011GGG....12OAF03C"><span>Volcanic morphology of <span class="hlt">West</span> Mata Volcano, NE Lau <span class="hlt">Basin</span>, based on high-resolution bathymetry and depth changes</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Clague, David A.; Paduan, Jennifer B.; Caress, David W.; Thomas, Hans; Chadwick, William W., Jr.; Merle, Susan G.</p> <p>2011-11-01</p> <p>High-resolution (1.5 m) mapping from the autonomous underwater vehicle (AUV) D. Allan B. of <span class="hlt">West</span> Mata Volcano in the northern Lau <span class="hlt">Basin</span> is used to identify the processes that construct and modify the volcano. The surface consists largely of volcaniclastic debris that forms smooth slopes to the NW and SE, with smaller lava flows forming gently sloping plateaus concentrated along the ENE and WSW rift zones, and more elongate flows radiating from the summit. Two active volcanic vents, Prometheus and Hades, are located ˜50 and ˜150 m WSW of the 1159 m summit, respectively, and are slightly NW of the ridgeline so the most abundant clastic deposits are emplaced on the NW flank. This eruptive activity and the location of vents appears to have been persistent for more than a decade, based on comparison of ship-based bathymetric surveys in 1996 and 2008-2010, which show positive depth changes up to 96 m on the summit and north flank of the volcano. The widespread distribution of clastic deposits downslope from the rift zones, as well as from the current vents, suggests that pyroclastic activity occurs at least as deep as 2200 m. The similar morphology of additional nearby volcanoes suggests that they too have abundant pyroclastic deposits.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/1998Geo....26..451S','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/1998Geo....26..451S"><span>Stratigraphic hierarchy of organic carbon rich siltstones in deep-water facies, Brushy Canyon Formation (Guadalupian), Delaware <span class="hlt">Basin</span>, <span class="hlt">West</span> Texas</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Sageman, Bradley B.; Gardner, Michael H.; Armentrout, John M.; Murphy, Adam E.</p> <p>1998-05-01</p> <p>The first systematic test for a predictive relationship between organic carbon content and stratigraphic hierarchy in a deep-water slope to <span class="hlt">basin</span>-floor deposit was performed. The studied section includes the Pipeline Shale, the Brushy Canyon Formation, and the lower part of the Cherry Canyon Formation of the Delaware Mountain Group, <span class="hlt">West</span> Texas. This interval represents one large-scale, 3rd-order genetic sequence within which 4th- and 5th-order stratigraphic cycles are recognized. Samples of fine-grained facies throughout the section were collected from outcrop and analyzed for organic carbon content and hydrogen index. Degree of pyritization was also determined for a subset of the samples. The results indicate that organic enrichment is closely correlated to the stratigraphic hierarchy at the 3rd-, 4th-, and 5th-order levels. The data suggest that quantity and quality of preserved organic matter are controlled by changes in bulk sedimentation rate (dilution vs. condensation), which affect organic matter inputs to the sediment, as well as the balance between (1) burial and preservation of organic matter and (2) its degradation on the sea floor during times of sediment starvation.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/of/2005/1078/','USGSPUBS'); return false;" href="https://pubs.usgs.gov/of/2005/1078/"><span>Thermal maturity patterns (CAI and %Ro) in the Ordovician and Devonian rocks of the Appalachian <span class="hlt">basin</span> in <span class="hlt">West</span> Virginia</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Repetski, John E.; Ryder, Robert T.; Avary, Katharine Lee; Trippi, Michael H.</p> <p>2005-01-01</p> <p>The objective of this study is to enhance existing thermal maturity maps in <span class="hlt">West</span> Virginia by establishing: 1) new subsurface CAI data points for the Ordovician and Devonian and 2) new %Ro and Rock Eval subsurface data points for Middle and Upper Devonian black shale units. Thermal maturity values for the Ordovician and Devonian strata are of major interest because they contain the source rocks for most of the oil and natural gas resources in the <span class="hlt">basin</span>. Thermal maturity patterns of the Middle Ordovician Trenton Limestone are evaluated here because they closely approximate those of the overlying Ordovician Utica Shale that is believed to be the source rock for the regional oil and gas accumulation in Lower Silurian sandstones (Ryder and others, 1998) and for natural gas fields in fractured dolomite reservoirs of the Ordovician Black River-Trenton Limestones. Improved CAI-based thermal maturity maps of the Ordovician are important to identify areas of optimum gas generation from the Utica Shale and to provide constraints for interpreting the origin of oil and gas in the Lower Silurian regional accumulation and Ordovician Black River-Trenton fields. Thermal maturity maps of the Devonian will better constrain burial history-petroleum generation models of the Utica Shale, as well as place limitations on the origin of regional oil and gas accumulations in Upper Devonian sandstone and Middle to Upper Devonian black shale.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/6587552','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/6587552"><span>Visualizing petroleum systems with a combination of GIS and multimedia technologies: An example from the <span class="hlt">West</span> Siberia <span class="hlt">Basin</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Walsh, D.B.; Grace, J.D. )</p> <p>1996-01-01</p> <p>Petroleum system studies provide an ideal application for the combination of Geographic Information System (GIS) and multimedia technologies. GIS technology is used to build and maintain the spatial and tabular data within the study region. Spatial data may comprise the zones of active source rocks and potential reservoir facies. Similarly, tabular data include the attendant source rock parameters (e.g. pyroloysis results, organic carbon content) and field-level exploration and production histories for the <span class="hlt">basin</span>. Once the spatial and tabular data base has been constructed, GIS technology is useful in finding favorable exploration trends, such as zones of high organic content, mature source rocks in positions adjacent to sealed, high porosity reservoir facies. Multimedia technology provides powerful visualization tools for petroleum system studies. The components of petroleum system development, most importantly generation, migration and trap development typically span periods of tens to hundreds of millions of years. The ability to animate spatial data over time provides an insightful alternative for studying the development of processes which are only captured in [open quotes]snapshots[close quotes] by static maps. New multimedia-authoring software provides this temporal dimension. The ability to record this data on CD-ROMs and allow user- interactivity further leverages the combination of spatial data bases, tabular data bases and time-based animations. The example used for this study was the Bazhenov-Neocomian petroleum system of <span class="hlt">West</span> Siberia.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/425933','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/425933"><span>Visualizing petroleum systems with a combination of GIS and multimedia technologies: An example from the <span class="hlt">West</span> Siberia <span class="hlt">Basin</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Walsh, D.B.; Grace, J.D.</p> <p>1996-12-31</p> <p>Petroleum system studies provide an ideal application for the combination of Geographic Information System (GIS) and multimedia technologies. GIS technology is used to build and maintain the spatial and tabular data within the study region. Spatial data may comprise the zones of active source rocks and potential reservoir facies. Similarly, tabular data include the attendant source rock parameters (e.g. pyroloysis results, organic carbon content) and field-level exploration and production histories for the <span class="hlt">basin</span>. Once the spatial and tabular data base has been constructed, GIS technology is useful in finding favorable exploration trends, such as zones of high organic content, mature source rocks in positions adjacent to sealed, high porosity reservoir facies. Multimedia technology provides powerful visualization tools for petroleum system studies. The components of petroleum system development, most importantly generation, migration and trap development typically span periods of tens to hundreds of millions of years. The ability to animate spatial data over time provides an insightful alternative for studying the development of processes which are only captured in {open_quotes}snapshots{close_quotes} by static maps. New multimedia-authoring software provides this temporal dimension. The ability to record this data on CD-ROMs and allow user- interactivity further leverages the combination of spatial data bases, tabular data bases and time-based animations. The example used for this study was the Bazhenov-Neocomian petroleum system of <span class="hlt">West</span> Siberia.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2015ApWS..tmp...64M','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2015ApWS..tmp...64M"><span>Coalbed methane-produced water quality and its management options in Raniganj <span class="hlt">Basin</span>, <span class="hlt">West</span> Bengal, India</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Mendhe, Vinod Atmaram; Mishra, Subhashree; Varma, Atul Kumar; Singh, Awanindra Pratap</p> <p>2015-09-01</p> <p>Coalbed methane (CBM) recovery is associated with production of large quantity of groundwater. The coal seams are depressurized by pumping of water for regular and consistent gas production. Usually, CBM operators need to pump >10 m3 of water per day from one well, which depends on the aquifer characteristics, drainage and recharge pattern. In India, 32 CBM blocks have been awarded for exploration and production, out of which six blocks are commercially producing methane gas at 0.5 million metric standard cubic feet per day. Large amount of water is being produced from CBM producing blocks, but no specific information or data are available for geochemical properties of CBM-produced water and its suitable disposal or utilization options for better management. CBM operators are in infancy and searching for the suitable solutions for optimal management of produced water. CBM- and mine-produced water needs to be handled considering its physical and geochemical assessment, because it may have environmental as well as long-term impact on aquifer. Investigations were carried out to evaluate geochemical and hydrogeological conditions of CBM blocks in Raniganj <span class="hlt">Basin</span>. Totally, 15 water samples from CBM well head and nine water samples from mine disposal head were collected from Raniganj <span class="hlt">Basin</span>. The chemical signature of produced water reveals high sodium and bicarbonate concentrations with low calcium and magnesium, and very low sulphate in CBM water. It is comprehend that CBM water is mainly of Na-HCO3 type and coal mine water is of Ca-Mg-SO4 and HCO3-Cl-SO4 type. The comparative studies are also carried out for CBM- and mine-produced water considering the geochemical properties, aquifer type, depth of occurrence and lithological formations. Suitable options like impounding, reverse osmosis, irrigation and industrial use after prerequisite treatments are suggested. However, use of this huge volume of CBM- and mine-produced water for irrigation or other beneficial purposes</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_7");'>7</a></li> <li><a href="#" onclick='return showDiv("page_8");'>8</a></li> <li class="active"><span>9</span></li> <li><a href="#" onclick='return showDiv("page_10");'>10</a></li> <li><a href="#" onclick='return showDiv("page_11");'>11</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_9 --> <div id="page_10" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_8");'>8</a></li> <li><a href="#" onclick='return showDiv("page_9");'>9</a></li> <li class="active"><span>10</span></li> <li><a href="#" onclick='return showDiv("page_11");'>11</a></li> <li><a href="#" onclick='return showDiv("page_12");'>12</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="181"> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/wri/1994/4147/report.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/wri/1994/4147/report.pdf"><span>Hydrogeology and ground-water flow, fractured Mesozoic structural-<span class="hlt">basin</span> rocks, Stony Brook, Beden Brook, and Jacobs Creek drainage <span class="hlt">basins</span>, <span class="hlt">west</span>-central New Jersey</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Lewis, Jean C.; Jacobsen, Eric</p> <p>1995-01-01</p> <p>This study was undertaken to characterize ground- water flow in the Stony Brook, Beden Brook, and Jacobs Creek drainage <span class="hlt">basins</span> in <span class="hlt">west</span>-central New Jersey. The 89-square-mile study area is underlain by dipping beds of fractured siltstone, shale, and sandstone and by massive diabase sills. In all of the rocks, the density of interconnected fractures decreases with depth. A major fault extends through the study area, and rocks on both sides of the fault are extensively fractured. The average annual rates of precipitation and ground-water recharge in the study area are 45.07 inches and 8.58 inches, respectively. The rate of recharge to diabase rocks is about one-half the rate of recharge to other rocks. Part of the surface runoff from diabase rocks enters the ground-water system where it encounters more permeable rocks. Most ground water in the study area follows short, shallow flow paths. A three- dimensional finite-difference model of ground-water flow was developed to test hypotheses concerning geologic features that control ground-water flow in the study area. The decrease in the density of interconnected fractures with depth was represented by dividing the model into two layers with different hydraulic conductivity. The pinching out of water- bearing beds in the dip direction at land surface and at depth was simulated as a lower hydraulic conductivity in the dip direction than in the strike direction. This model can be used to analyze ground-water flow if the area of interest is more than about 0.5 square mile.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/27386296','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/27386296"><span>Vulnerability and adaptation to climate change in the Comoe River <span class="hlt">Basin</span> (<span class="hlt">West</span> Africa).</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Yéo, Wonnan Eugène; Goula, Bi Tié Albert; Diekkrüger, Bernd; Afouda, Abel</p> <p>2016-01-01</p> <p>Climate change is impacting water users in many sectors: water supply, farming, industry, hydropower, fishing, housing, navigation and health. Existing situations, like population growth, movement of populations from rural to urban areas, poverty and pollution can aggravate the impacts of climate change. The aim of the study is to evaluate the vulnerability of different water user groups to climate change and define communities' adaptation strategies in the Comoe River <span class="hlt">Basin</span>. Information was collected on communities' concerns and perception on changes in climate and potential adaptation measures and strategies. Results show that 95 % of the sample in the study communities had heard of it and are aware that climate change is occurring. They have been experiencing changes in economic activity and cropping pattern, reduced water level in rivers, crop failure, delay in cropping season, new pests and diseases, food insecurity, drop in income and decline in crop yield. Results also show that communities employ various adaptation strategies including crops diversification, substitution and calendar redefinition, agroforestry, borrowing from friends and money lenders and increasing fertilizer application.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.epa.gov/exposure-assessment-models/basins','PESTICIDES'); return false;" href="https://www.epa.gov/exposure-assessment-models/basins"><span><span class="hlt">BASINS</span></span></a></p> <p><a target="_blank" href="http://www.epa.gov/pesticides/search.htm">EPA Pesticide Factsheets</a></p> <p></p> <p></p> <p>Better Assessment Science Integrating Point and Nonpoint Sources (<span class="hlt">BASINS</span>) is a multipurpose environmental analysis system designed to help regional, state, and local agencies perform watershed- and water quality-based studies.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/421130','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/421130"><span>V/Ni ratio in crude oil fractions from the <span class="hlt">west</span> Venezuelan <span class="hlt">Basin</span>: Correlation studies</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Lo Monaco, S.; Lopez, L.; Rojas, A.; Lira, A.</p> <p>1996-08-01</p> <p>This study presents the analyses of S and the metals Cr, Zn, Fe, Mn, Cu, Co, Ni, Mo, V and Sr within the fractions of saturated hydrocarbons, aromatic hydrocarbons and resins, and the IR spectroscopy analysis of these fractions for crudes of the Mara and Mara Oeste fields of the Maracaibo <span class="hlt">basin</span>. These results are discussed as related to their implications in oil-oil correlation, and studies of the possible metal-organic associations, and are compared with previous studies which analyzed S, V, and Ni in the total crude and its asphaltene and maltene fractions. In the saturated fraction, elements Zn, Fe, Mn, Cu, Ni and Sr were detected. In the aromatic fraction, in addition to the before mentioned elements, Cr and Ni were also detected; while in the resins elements Cr, Zn, Fe, Cu, Ni, Mo, V and Sr were detected. S was detected in the three fractions studied, and IR spectra show bands that may be related to organic compounds that contain S. IR results for the aromatic hydrocarbons and the resins indicate the presence of carboxylic groups which can serve as ligands for metals in such fractions. The larger number of elements detected within resins, as well as their higher concentration vs. saturated and aromatic hydrocarbons, may be due to the structure of the resins and their greater ability to form organometallic complexes. The relatively constant V/Ni ratios in crudes (11 +/- 1), maltene (15 +/- 1), asphaltenes (15 +/- 1) and resins (11 +/- 1) give support to a single group of crudes. These results indicate that the V/Ni ratio determined for the whole crude or its fractions may be used as a correlation parameter.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/12761405','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/12761405"><span>Cation movement and phase transitions in KTP isostructures; X-ray study of sodium-doped KTP at 10.5 K.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Norberg, Stefan T; Sobolev, Alexander N; Streltsov, Victor A</p> <p>2003-06-01</p> <p>An accurate structure model of sodium-doped potassium titanyl phosphate, (Na(0.114)K(0.886))K(TiO)(2)(PO(4))(2), has been determined at 10.5 K by single-crystal X-ray diffraction. In addition to the low-temperature data, X-ray intensities have been collected at room temperature. When the temperature was decreased from room temperature to 10.5 K, both potassium cations moved 0.033 (2) A along the c-axis, i.e. in the polar direction within the rigid Ti-O-P network. This alkaline metal ion displacement can be related to the Abrahams-Jamieson-Kurtz T(C) criteria for oxygen framework ferroelectrics. Potassium titanyl phosphate (KTP) is a well known material for second harmonic generation (SHG), and the influence of sodium dopant on the TiO(6) octahedral geometry and SHG is discussed. The material studied crystallizes in the space group Pna2(1) with Z = 4, a = 12.7919 (5), b = 6.3798 (4), c = 10.5880 (7) A, V = 864.08 (9) A(3), T = 10.5 (3) K and R = 0.023.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2006PCE....31.1180O','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2006PCE....31.1180O"><span>Hydroclimatology of the Volta River <span class="hlt">Basin</span> in <span class="hlt">West</span> Africa: Trends and variability from 1901 to 2002</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Oguntunde, Philip G.; Friesen, Jan; van de Giesen, Nick; Savenije, Hubert H. G.</p> <p></p> <p>Long-term historical records of rainfall ( P), runoff ( Q) and other climatic factors were used to investigate hydrological variability and trends in the Volta River <span class="hlt">Basin</span> over the period 1901-2002. Potential ( Ep) and actual evaporation ( E), rainfall variability index ( δ), Budyko’s aridity index ( IA), evaporation ratio ( CE) and runoff ratio ( CQ) were estimated from the available hydroclimatological records. Mann-Kendall trend analysis and non-parametric Sen’s slope estimates were performed on the respective time series variables to detect monotonic trend direction and magnitude of change over time. Rainfall variability index showed that 1968 was the wettest year ( δ = +1.75) while 1983 was the driest ( δ = -3.03), with the last three decades being drier than any other comparable period in the hydrological history of the Volta. An increase of 0.2 mm/yr 2 ( P < 0.05) was observed in Ep for the 1901-1969 sub-series while an increased of 1.8 mm/yr 2 ( P < 0.01) was recorded since 1970. Rainfall increased at the rate of 0.7 mm/yr 2 or 49 mm/yr between 1901 and 1969, whereas a decrease of 0.2 mm/yr 2 (6 mm/yr) was estimated for 1970-2002 sub-series. Runoff increased significantly at the rate of 0.8 mm/yr (23 mm/yr) since 1970. Runoff before dam construction was higher (87.5 mm/yr) and more varied (CV = 41.5%) than the post-dam period with value of 73.5 mm/yr (CV = 23.9%). A 10% relative decrease in P resulted in a 16% decrease in Q between 1936 and 1998. Since 1970, all the months showed increasing runoff trends with significant slopes ( P < 0.05) in 9 out of the 12 months. Possible causes, such as climate change and land cover change, on the detected changes in hydroclimatology are briefly discussed.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2005AGUFM.H23B1426V','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2005AGUFM.H23B1426V"><span>Predicting the downstream impact of ensembles of small reservoirs with special reference to the Volta <span class="hlt">Basin</span>, <span class="hlt">West</span> Africa</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>van de Giesen, N.; Andreini, M.; Liebe, J.; Steenhuis, T.; Huber-Lee, A.</p> <p>2005-12-01</p> <p>After a strong reduction in investments in water infrastructure in Sub-Saharan Africa, we now see a revival and increased interest to start water-related projects. The global political willingness to work towards the UN millennium goals are an important driver behind this recent development. Large scale irrigation projects, such as were constructed at tremendous costs in the 1970's and early 1980's, are no longer seen as the way forward. Instead, the construction of a large number of small, village-level irrigation schemes is thought to be a more effective way to improve food production. Such small schemes would fit better in existing and functioning governance structures. An important question now becomes what the cumulative (downstream) impact is of a large number of small irrigation projects, especially when they threaten to deplete transboundary water resources. The Volta <span class="hlt">Basin</span> in <span class="hlt">West</span> Africa is a transboundary river catchment, divided over six countries. Of these six countries, upstream Burkina Faso and downstream Ghana are the most important and cover 43% and 42% of the <span class="hlt">basin</span>, respectively. In Burkina Faso (and also North Ghana), small reservoirs and associated irrigation schemes are already an important means to improve the livelihoods of the rural population. In fact, over two thousand such schemes have already been constructed in Burkina Faso and further construction is to be expected in the light of the UN millennium goals. The cumulative impact of these schemes would affect the Akosombo Reservoir, one of the largest manmade lakes in the world and an important motor behind the economic development in (South) Ghana. This presentation will put forward an analytical framework that allows for the impact assessment of (large) ensembles of small reservoirs. It will be shown that despite their relatively low water use efficiencies, the overall impact remains low compared to the impact of large dams. The tools developed can be used in similar settings elsewhere</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.water.usgs.gov/wri99-4269/','USGSPUBS'); return false;" href="http://pubs.water.usgs.gov/wri99-4269/"><span>Ground-water quality in the Appalachian Plateaus, Kanawha River <span class="hlt">basin</span>, <span class="hlt">West</span> Virginia</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Sheets, Charlynn J.; Kozar, Mark D.</p> <p>2000-01-01</p> <p>Water samples collected from 30 privately-owned and small public-supply wells in the Appalachian Plateaus of the Kanawha River <span class="hlt">Basin</span> were analyzed for a wide range of constituents, including bacteria, major ions, nutrients, trace elements, radon, pesticides, and volatile organic compounds. Concentrations of most constituents from samples analyzed did not exceed U.S. Environmental Protection Agency (USEPA) standards. Constituents that exceeded drinking-water standards in at least one sample were total coliform bacteria, Escherichia coli (E. coli), iron, manganese, and sulfate. Total coliform bacteria were present in samples from five sites, and E. coli were present at only one site. USEPA secondary maximum contaminant levels (SMCLs) were exceeded for three constituents -- sulfate exceeded the SMCL of 250 mg/L (milligrams per liter) in samples from 2 of 30 wells; iron exceeded the SMCL of 300 ?g/L (micrograms per liter) in samples from 12 of the wells, and manganese exceeded the SMCL of 50 ?g/L in samples from 17 of the wells sampled. None of the samples contained concentrations of nutrients that exceeded the USEPA maximum contaminant levels (MCLs) for these constituents. The maximum concentration of nitrate detected was only 4.1 mg/L, which is below the MCL of 10 mg/L. Concentrations of nitrate in precipitation and shallow ground water are similar, potentially indicating that precipitation may be a source of nitrate in shallow ground water in the study area. Radon concentrations exceeded the recently proposed maximum contaminant level of 300 pCi/L at 50 percent of the sites sampled. The median concentration of radon was only 290 pCi/L. Radon-222 is a naturally occurring, carcinogenic, radioactive decay product of uranium. Concentrations, however, did not exceed the alternate maximum contaminant level (AMCL) for radon of 4,000 pCi/L in any of the 30 samples. Arsenic concentrations exceeded the proposed MCL of 5?g/L at 4 of the 30 sites. No samples exceeded the</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2014AGUFMGC53B0520W','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2014AGUFMGC53B0520W"><span>Future Water Resources Assessment for <span class="hlt">West</span> African River <span class="hlt">Basins</span> Under Climate Change, Population Growth and Irrigation Development</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Wisser, D.; Ibrahim, B.; Proussevitch, A. A.</p> <p>2014-12-01</p> <p><span class="hlt">West</span> Africa economies rely on rain-fed agriculture and are extremely vulnerable to changes in precipitation. Results from the most recent generation of regional climate models suggest increases in rainy season rainfall variability (delayed rainy season onset, increased probability of dry spells, shorter rainy season duration) despite a moderate increase in rainy season total precipitation. These changes could potentially have detrimental effects on crop yield and food security. Additional pressures on water resources come from increased demand as a result of high population growth rates (~3% per year). Increased water storage and irrigation can help improve crop yields but future assessments of water resources are needed to prioritize irrigation development as an adaptation option. Increased water abstraction, in turn can impact water availability in downstream regions so that an integrated assessment of future water availability and demand is needed. We use a set of 15 RCM outputs from the CORDEX data archive to drive WBMplus, a hydrological model and simulate water availability under climate change. Based on estimated water constraints, we develop scenarios to expand irrigated areas (from the current 1% of all croplands) and calculate the effects on water scarcity, taking into account increased demand for domestic consumption and livestock water demand, at a spatial resolution of 10 km. Results around the 2050's indicate large potential to develop irrigated areas on ground and surface water and increase local water storage without increasing water scarcity downstream for many river <span class="hlt">basins</span> in the region that could help alleviate pressures on the cropping systems and thereby increase food security.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/wsp/2059/report.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/wsp/2059/report.pdf"><span>Magnitudes, nature, and effects of point and nonpoint discharges in the Chattahoochee River <span class="hlt">Basin</span>, Atlanta to <span class="hlt">West</span> Point Dam, Georgia</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Stamer, J.K.; Cherry, Rodney N.; Faye, R.E.; Kleckner, R.L.</p> <p>1979-01-01</p> <p>During the period April 1975 to June 1978, the U.S. Geological Survey conducted a river-quality assessment of the Upper Chattahoochee River <span class="hlt">basin</span> in Georgia. One objective of the study was to assess the magnitudes, nature, and effects of point and non-point discharges in the Chattahoochee River <span class="hlt">basin</span> from Atlanta to the <span class="hlt">West</span> Point Dam. On an average annual basis and during the storm period of March 1215, 1976, non-point-source loads for most constituents analyzed were larger than point-source loads at the Whitesburg station, located on the Chattahoochee River about 40 river miles downstream of Atlanta. Most of the non-point-source constituent loads in the Atlanta-to-Whitesburg reach were from urban areas. Average annual point-source discharges accounted for about 50 percent of the dissolved nitrogen, total nitrogen, and total phosphorus loads, and about 70 percent of the dissolved phosphorus loads at Whitesburg. During weekends, power generation at the upstream Buford Dam hydroelectric facility is minimal. Streamflow at the Atlanta station during dry-weather weekends is estimated to be about 1,200 ft3/s (cubic feet per second). Average daily dissolved-oxygen concentrations of less than 5.0 mg/L (milligrams per liter) occurred often in the river, about 20 river miles downstream from Atlanta during these periods from May to November. During a low-flow period, June 1-2, 1977, five municipal point sources contributed 63 percent of the ultimate biochemical oxygen demand, 97 percent of the ammonium nitrogen, 78 percent of the total nitrogen, and 90 percent of the total phosphorus loads at the Franklin station, at the upstream end of <span class="hlt">West</span> Point Lake. Average daily concentrations of 13 mg/L of ultimate biochemical oxygen demand and 1.8 mg/L of ammonium nitrogen were observed about 2 river miles downstream from two of the municipal point sources. Carbonaceous and nitrogenous oxygen demands caused dissolved-oxygen concentrations between 4.1 and 5.0 mg/L to occur in a 22-mile</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.water.usgs.gov/wri014021','USGSPUBS'); return false;" href="http://pubs.water.usgs.gov/wri014021"><span>Benthic invertebrate communities and their responses to selected environmental factors in the Kanawha River <span class="hlt">basin</span>, <span class="hlt">West</span> Virginia, Virginia, and North Carolina</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Chambers, Douglas B.; Messinger, Terence</p> <p>2001-01-01</p> <p>The effects of selected environmental factors on the composition and structure of benthic invertebrate communities in the Kanawha River <span class="hlt">Basin</span> of <span class="hlt">West</span> Virginia, Virginia and North Carolina were investigated in 1997 and 1998. Environmental factors investigated include physiography, land-use pattern, streamwater chemistry, streambed- sediment chemistry, and habitat characteristics. Land-use patterns investigated include coal mining, agriculture, and low intensity rural-residential patterns, at four main stem and seven tributary sites throughout the <span class="hlt">basin</span>. Of the 37 sites sampled, <span class="hlt">basin</span> size and physiography most strongly affected benthic invertebrate-community structure. Land-use practices also affected invertebrate community structure in these <span class="hlt">basins</span>. The <span class="hlt">basins</span> that differed most from the minimally affected reference condition were those <span class="hlt">basins</span> in which coal mining was the dominant nonforest land use, as determined by comparing invertebrate- community metric values among sites. <span class="hlt">Basins</span> in which agriculture was important were more similar to the reference condition. The effect of coal mining upon benthic invertebrate communities was further studied at 29 sites and the relations among invertebrate communities and the selected environmental factors of land use, streamwater chemistry, streambed- sediment chemistry, and habitat characteristics analyzed. Division of coal-mining synoptic-survey sites based on invertebrate-community composition resulted in two groups?one with more than an average production of 9,000 tons of coal per square mile per year since 1980, and one with lesser or no recent coal production. The group with significant recent coal production showed higher levels of community impairment than the group with little or no recent coal production. Median particle size of streambed sediment, and specific conductance and sulfate concentration of streamwater were most strongly correlated with effects on invertebrate communities. These characteristics were</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/sir/2005/5099/','USGSPUBS'); return false;" href="https://pubs.usgs.gov/sir/2005/5099/"><span>Calibration parameters used to simulate streamflow from application of the Hydrologic Simulation Program-FORTRAN Model (HSPF) to mountainous <span class="hlt">basins</span> containing coal mines in <span class="hlt">West</span> Virginia</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Atkins, John T.; Wiley, Jeffrey B.; Paybins, Katherine S.</p> <p>2005-01-01</p> <p>This report presents the Hydrologic Simulation Program-FORTRAN Model (HSPF) parameters for eight <span class="hlt">basins</span> in the coal-mining region of <span class="hlt">West</span> Virginia. The magnitude and characteristics of model parameters from this study will assist users of HSPF in simulating streamflow at other <span class="hlt">basins</span> in the coal-mining region of <span class="hlt">West</span> Virginia. The parameter for nominal capacity of the upper-zone storage, UZSN, increased from south to north. The increase in UZSN with the increase in <span class="hlt">basin</span> latitude could be due to decreasing slopes, decreasing rockiness of the soils, and increasing soil depths from south to north. A special action was given to the parameter for fraction of ground-water inflow that flows to inactive ground water, DEEPFR. The basis for this special action was related to the seasonal movement of the water table and transpiration from trees. The models were most sensitive to DEEPFR and the parameter for interception storage capacity, CEPSC. The models were also fairly sensitive to the parameter for an index representing the infiltration capacity of the soil, INFILT; the parameter for indicating the behavior of the ground-water recession flow, KVARY; the parameter for the basic ground-water recession rate, AGWRC; the parameter for nominal capacity of the upper zone storage, UZSN; the parameter for the interflow inflow, INTFW; the parameter for the interflow recession constant, IRC; and the parameter for lower zone evapotranspiration, LZETP.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/5794168','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/5794168"><span>Depositional setting of Ordovician and Cambrian rocks in central Appalachian <span class="hlt">basin</span> along a section from Morrow County, Ohio, to Calhoun County, <span class="hlt">West</span> Virginia</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Ryder, R.T.</p> <p>1988-08-01</p> <p>A 200-mi (320 km) long restored stratigraphic section from Morrow County, Ohio, to Calhoun County, <span class="hlt">West</span> Virginia, contrasts Ordovician and Cambrian rocks deposited on a relatively stable shelf with those deposited in rift and postrift <span class="hlt">basins</span>. Lithologic data are from commercial logs and from detailed descriptions of cores in five of the nine drill holes used to construct the section. Particularly instructive was the 2,352 ft (717 m) of core from the Hope Natural Gas 9634 Power Oil basement test in Wood County, <span class="hlt">West</span> Virginia. Rift <span class="hlt">basin</span> deposits are dominated by medium to dark-gray argillaceous limestone, argillaceous siltstone, and by green-gray to black shale of probable subtidal origin. Dolomite is the dominant rock type in the postrift <span class="hlt">basin</span> and adjacent stable shelf deposits. The upper part of the postrift sequence, composed of the Middle Ordovician Black River Limestone, the Middle Ordovician Trenton Limestone, and Middle and Upper Ordovician Antes (Utica) Shale with a high organic content, represents deposition in gradually deepening water on an open shelf.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.water.usgs.gov/ofr03-133/','USGSPUBS'); return false;" href="http://pubs.water.usgs.gov/ofr03-133/"><span>Comparison of peak discharges among sites with and without valley fills for the July 8-9, 2001 flood in the headwaters of Clear Fork, Coal River <span class="hlt">basin</span>, mountaintop coal-mining region, southern <span class="hlt">West</span> Virginia</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Wiley, Jeffrey B.; Brogan, Freddie D.</p> <p>2003-01-01</p> <p>The effects of mountaintop-removal mining practices on the peak discharges of streams were investigated in six small drainage <span class="hlt">basins</span> within a 7-square-mile area in southern <span class="hlt">West</span> Virginia. Two of the small <span class="hlt">basins</span> had reclaimed valley fills, one <span class="hlt">basin</span> had reclaimed and unreclaimed valley fills, and three <span class="hlt">basins</span> did not have valley fills. Indirect measurements of peak discharge for the flood of July 8-9, 2001, were made at six sites on streams draining the small <span class="hlt">basins</span>. The sites without valley fills had peak discharges with 10- to 25-year recurrence intervals, indicating that rainfall intensities and totals varied among the study <span class="hlt">basins</span>. The flood-recurrence intervals for the three <span class="hlt">basins</span> with valley fills were determined as though the peak discharges were those from rural streams without the influence of valley fills, and ranged from less than 2 years to more than 100 years.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2009AdG....21...57L','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2009AdG....21...57L"><span>The Volta <span class="hlt">Basin</span> Water Allocation System: assessing the impact of small-scale reservoir development on the water resources of the Volta <span class="hlt">basin</span>, <span class="hlt">West</span> Africa</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Leemhuis, C.; Jung, G.; Kasei, R.; Liebe, J.</p> <p>2009-08-01</p> <p>In the Volta <span class="hlt">Basin</span>, infrastructure watershed development with respect to the impact of climate conditions is hotly debated due to the lack of adequate tools to model the consequences of such development. There is an ongoing debate on the impact of further development of small and medium scale reservoirs on the water level of Lake Volta, which is essential for hydropower generation at the Akosombo power plant. The GLOWA Volta Project (GVP) has developed a Volta <span class="hlt">Basin</span> Water Allocation System (VB-WAS), a decision support tool that allows assessing the impact of infrastructure development in the <span class="hlt">basin</span> on the availability of current and future water resources, given the current or future climate conditions. The simulated historic and future discharge time series of the joint climate-hydrological modeling approach (MM5/WaSiM-ETH) serve as input data for a river <span class="hlt">basin</span> management model (MIKE <span class="hlt">BASIN</span>). MIKE <span class="hlt">BASIN</span> uses a network approach, and allows fast simulations of water allocation and of the consequences of different development scenarios on the available water resources. The impact of the expansion of small and medium scale reservoirs on the stored volume of Lake Volta has been quantified and assessed in comparison with the impact of climate variability on the water resources of the <span class="hlt">basin</span>.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.dtic.mil/docs/citations/ADA088252','DTIC-ST'); return false;" href="http://www.dtic.mil/docs/citations/ADA088252"><span>National Dam Safety Program. Campbells Pond Dam (NJ00517). Rahway River <span class="hlt">Basin</span>, <span class="hlt">West</span> Branch Rahway River, Essex County, New Jersey. Phase I Inspection Report.</span></a></p> <p><a target="_blank" href="https://publicaccess.dtic.mil/psm/api/service/search/search">DTIC Science & Technology</a></p> <p></p> <p>1980-01-01</p> <p>TESI CHART NATIONAL BURIAU Sif ANARDS 19 1 A L... . .. .... ... - S- " i -- RAHWAY RIVER <span class="hlt">BASIN</span> <span class="hlt">WEST</span> BRANCH RAHWAY RIVER ESSEX COUNTY NEW JERSEY...written operating procedures and a periodic maintenance plan to ensure the safety of the dam within one year from the date of approval of this report. q ...IA4 0 £ ac C L. 0 ix E 0 EU> - 0) r Q . La #A 2 0 "o . 4-c 4.-n L S.0- 1- 0 &c =EU 4) 0 w ..0CL LW 0) L.do En 4) 4Ja) evI- to L (A4. WE OL 43 L00 WO0</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70019393','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70019393"><span>An integrated model for the tectonic development of the frontal Brooks Range and Colville <span class="hlt">Basin</span> 250 km <span class="hlt">west</span> of the Trans-Alaska Crustal Transect</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Cole, F.; Bird, K.J.; Toro, J.; Roure, F.; O'Sullivan, P. B.; Pawlewicz, M.; Howell, D.G.</p> <p>1997-01-01</p> <p>We present a kinematic model for the sequence of deformation and sedimentation in the frontal Brooks Range and adjacent Colville <span class="hlt">Basin</span> in the Etivluk River region, 250 km <span class="hlt">west</span> of the Trans-Alaska Crustal Transect (TACT). The model is based on a tectonic subsidence analysis of the foreland <span class="hlt">basin</span>, combined with structural, stratigraphic, and thermal studies of the northern edge of the Brooks Range thrust belt. We interpret six discrete tectonic events that led to the present-day configuration of the thrust belt in this area: (1) emplacement of ophiolitic allochthons over the distal continental margin rocks in Valanginian time, hundreds of kilometers south of this study, (2) Hauterivian uplift of the Barrow Arch rift margin, affecting the northern part of the Colville <span class="hlt">Basin</span>, (3) Barremian contraction involving emplacement of distal continental margin and ophiolitic allochthons onto the Endicott Mountains allochthon and creation of a southward dipping flexural <span class="hlt">basin</span> on the North Slope autochthon, (4) mid-Cretaceous exhumation of imbricated rocks in the Brooks Range during northward propagation of the thrust front into the foreland, (5) minor thrusting in Late Cretaceous-Paleocene in the northern foreland to the northern limit of contractional structures, and (6) regional exhumation of the orogen and the foreland in Paleocene-Eocene time. This sequence of deformation agrees well with a simple model of a forward propagating thrust system. Copyright 1997 by the American Geophysical Union.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/wri/1994/4181/report.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/wri/1994/4181/report.pdf"><span>Geohydrology and water quality of stratified-drift aquifers in the middle Connecticut River <span class="hlt">basin</span>, <span class="hlt">west</span>-central New Hampshire</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Flanagan, S.M.</p> <p>1996-01-01</p> <p>A study was done by the U.S. Geological Survey, in cooperation with the New Hampshire Department of Environmental Services, Water Resources Division, to describe the geohydrology and water quality of stratified-drift aquifers in the Middle Connecticut River <span class="hlt">Basin</span>, <span class="hlt">west</span>-central New Hampshire Stratified-drift aquifers discontinuously underlie 123 mi2 (square miles) of the Middle Connecticut River <span class="hlt">Basin</span>, which has a total drainage area of 987 mi 2. Saturated thicknesses of stratified drift in the study area are locally greater than 500 feet but generally are less than 100 feet. Aquifer transmissivity locally exceeds 4,000 ft2/d (feet squared per day) but is generally less than 1,000 ft2/d. In only 17.2 mi2 of the study area are the aquifers identified as having a transmissivity greater than 1,000 ft2/d. As of 1990, total groundwater withdrawals from stratified drift for municipal supply were about 1.5 Mgal/d (million gallons per day) in the study area. Many of the stratified-drift aquifers underlying the study area are not developed to their fullest potential. The geohydrologic investigation of the stratified-drift aquifers focused on aquifer properties, including aquifer boundaries; recharge, discharge, and direction of ground-water flow; saturated thickness and storage; and transmissivity. Surficial-geologic mapping assisted in the determination of aquifer boundaries. Data from more than 1,000 wells, test borings, and springs were used to prepare maps of water-table altitude, saturated thickness, and transmissivity of stratified drift. More than 11 miles of seismic-refraction profiling at 95 sites was used in the preparation of the water-table-altitude and saturated-thickness maps. Seismic-reflection data collected along 1.6 miles of Mascoma Lake also were used in preparation of the saturated-thickness maps. Four stratified-drift aquifers in the towns of Franconia, Haverhill, and Lisbon were analyzed to estimate the water availability on the basis of analytical</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/pp/1708/g8/pdf/pp1708_g8.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/pp/1708/g8/pdf/pp1708_g8.pdf"><span>Evidence for Cambrian petroleum source rocks in the Rome trough of <span class="hlt">West</span> Virginia and Kentucky, Appalachian <span class="hlt">basin</span>: Chapter G.8 in Coal and petroleum resources in the Appalachian <span class="hlt">basin</span>: distribution, geologic framework, and geochemical character</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Ryder, Robert T.; Harris, David C.; Gerome, Paul; Hainsworth, Timothy J.; Burruss, Robert A.; Lillis, Paul G.; Jarvie, Daniel M.; Pawlewicz, Mark J.; Ruppert, Leslie F.; Ryder, Robert T.</p> <p>2014-01-01</p> <p>The bitumen extract from the Rogersville Shale compares very closely with oils or condensates from Cambrian reservoirs in the Carson Associates No. 1 Kazee well, Homer gas field, Elliott County, Ky.; the Inland No. 529 White well, Boyd County, Ky.; and the Miller No. 1 well, Wolfe County, Ky. These favorable oil-source rock correlations suggest a new petroleum system in the Appalachian <span class="hlt">basin</span> that is characterized by a Conasauga Group source rock and Rome Formation and Conasauga Group reservoirs. This petroleum system probably extends along the Rome trough from eastern Kentucky to at least central <span class="hlt">West</span> Virginia.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/pp/1708/g11/pdf/pp1708_g11.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/pp/1708/g11/pdf/pp1708_g11.pdf"><span>In search of a Silurian total petroleum system in the Appalachian <span class="hlt">basin</span> of New York, Ohio, Pennsylvania, and <span class="hlt">West</span> Virginia: Chapter G.11 in Coal and petroleum resources in the Appalachian <span class="hlt">basin</span>: distribution, geologic framework, and geochemical character</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Ryder, Robert T.; Swezey, Christopher S.; Trippi, Michael H.; Lentz, Erika E.; Avary, K. Lee; Harper, John A.; Kappel, William M.; Rea, Ronald G.; Ruppert, Leslie F.; Ryder, Robert T.</p> <p>2014-01-01</p> <p>Although the TOC analyses in this study indicate that good to very good source rocks are present in the Salina Group and Wills Creek Formation of southwestern Pennsylvania and northern <span class="hlt">West</span> Virginia, data are insufficient to propose a new Silurian total petroleum system in the Appalachian <span class="hlt">basin</span>. However, the analytical results of this investigation are encouraging enough to undertake more systematic studies of the source rock potential of the Salina Group, Wills Creek Formation, and perhaps the Tonoloway Formation (Limestone) and McKenzie Limestone (or Member).</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_8");'>8</a></li> <li><a href="#" onclick='return showDiv("page_9");'>9</a></li> <li class="active"><span>10</span></li> <li><a href="#" onclick='return showDiv("page_11");'>11</a></li> <li><a href="#" onclick='return showDiv("page_12");'>12</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_10 --> <div id="page_11" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_9");'>9</a></li> <li><a href="#" onclick='return showDiv("page_10");'>10</a></li> <li class="active"><span>11</span></li> <li><a href="#" onclick='return showDiv("page_12");'>12</a></li> <li><a href="#" onclick='return showDiv("page_13");'>13</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="201"> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/sir/2013/5099/pdf/sir2013-5099.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/sir/2013/5099/pdf/sir2013-5099.pdf"><span>Geologic sources and concentrations of selenium in the <span class="hlt">West</span>-Central Denver <span class="hlt">Basin</span>, including the Toll Gate Creek watershed, Aurora, Colorado, 2003-2007</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Paschke, Suzanne S.; Walton-Day, Katherine; Beck, Jennifer A.; Webbers, Ank; Dupree, Jean A.</p> <p>2014-01-01</p> <p>Toll Gate Creek, in the <span class="hlt">west</span>-central part of the Denver <span class="hlt">Basin</span>, is a perennial stream in which concentrations of dissolved selenium have consistently exceeded the Colorado aquatic-life standard of 4.6 micrograms per liter. Recent studies of selenium in Toll Gate Creek identified the Denver lignite zone of the non-marine Cretaceous to Tertiary-aged (Paleocene) Denver Formation underlying the watershed as the geologic source of dissolved selenium to shallow ground-water and surface water. Previous work led to this study by the U.S. Geological Survey, in cooperation with the City of Aurora Utilities Department, which investigated geologic sources of selenium and selenium concentrations in the watershed. This report documents the occurrence of selenium-bearing rocks and groundwater within the Cretaceous- to Tertiary-aged Denver Formation in the <span class="hlt">west</span>-central part of the Denver <span class="hlt">Basin</span>, including the Toll Gate Creek watershed. The report presents background information on geochemical processes controlling selenium concentrations in the aquatic environment and possible geologic sources of selenium; the hydrogeologic setting of the watershed; selenium results from groundwater-sampling programs; and chemical analyses of solids samples as evidence that weathering of the Denver Formation is a geologic source of selenium to groundwater and surface water in the <span class="hlt">west</span>-central part of the Denver <span class="hlt">Basin</span>, including Toll Gate Creek. Analyses of water samples collected from 61 water-table wells in 2003 and from 19 water-table wells in 2007 indicate dissolved selenium concentrations in groundwater in the <span class="hlt">west</span>-central Denver <span class="hlt">Basin</span> frequently exceeded the Colorado aquatic-life standard and in some locations exceeded the primary drinking-water standard of 50 micrograms per liter. The greatest selenium concentrations were associated with oxidized groundwater samples from wells completed in bedrock materials. Selenium analysis of geologic core samples indicates that total selenium</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2009GGG....10.8X07O','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2009GGG....10.8X07O"><span>Sedimentary, volcanic, and tectonic processes of the central Mariana Arc: Mariana Trough back-arc <span class="hlt">basin</span> formation and the <span class="hlt">West</span> Mariana Ridge</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Oakley, A. J.; Taylor, B.; Moore, G. F.; Goodliffe, A.</p> <p>2009-08-01</p> <p>We present new multichannel seismic profiles and bathymetric data from the central Marianas that image the <span class="hlt">West</span> Mariana Ridge (WMR) remnant arc, both margins of the Mariana Trough back-arc <span class="hlt">basin</span>, the modern arc, and Eocene frontal-arc high. These data reveal structure and stratigraphy related to three periods of arc volcanism and two periods of arc rifting. We interpret the boundary between accreted back-arc <span class="hlt">basin</span> and rifted arc crust along the Mariana Trough and support these findings with drilling results and recent seismic refraction and gravity studies. We show that with the exception of a few volcanoes behind the volcanic front that straddle the boundary between crustal types, the modern Mariana Arc is built entirely on rifted arc crust between 14 and 19°N. Our data indicate that there is more accreted back-arc seafloor to the <span class="hlt">west</span> of the Mariana Trough spreading axis than to the east, confirming previous evidence for an asymmetric <span class="hlt">basin</span>. The rifted margin of the WMR remnant arc forms a stepped pattern along the western boundary of the Mariana Trough, between 15°30' and 19°N. In this region, linear volcanic cross chains behind the WMR are aligned with the trend of Mariana Trough spreading segments, and the WMR ridges extend into the back-arc <span class="hlt">basin</span> along the same strike. These ridges are magmatic accommodation zones which, to the north along the Izu-Bonin Arc, punctuate tectonic extension. For the WMR we hypothesize that rift <span class="hlt">basins</span> are more commonly the sites where spreading segment offsets nucleate, whereas magmatic centers of spreading segments are sites where magmatism continues from arc volcanism, through rifting to back-arc spreading. The Mariana Trough is opening nonrigidly and is characterized by two predominant abyssal hill trends, NNW-SSE in the north and N-S in the south. Between the only two <span class="hlt">basin</span>-crossing fracture zones at ˜15.5 and 17.5°, N-S axes propagated north at the expense of NNW axes.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/sir/2006/5207/PDF/SIR2006_5207.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/sir/2006/5207/PDF/SIR2006_5207.pdf"><span>Evaluation of baseline ground-water conditions in the Mosteiros, Ribeira Paul, and Ribeira Fajã <span class="hlt">Basins</span>, Republic of Cape Verde, <span class="hlt">West</span> Africa, 2005-06</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Heilweil, Victor M.; Earle, John D.; Cederberg, Jay R.; Messer, Mickey M.; Jorgensen, Brent E.; Verstraeten, Ingrid M.; Moura, Miguel A.; Querido, Arrigo; Spencer,; Osorio, Tatiana</p> <p>2006-01-01</p> <p>This report documents current (2005-06) baseline ground-water conditions in three <span class="hlt">basins</span> within the <span class="hlt">West</span> African Republic of Cape Verde (Mosteiros on Fogo, Ribeira Paul on Santo Antão, and Ribeira Fajã on São Nicolau) based on existing data and additional data collected during this study. Ground-water conditions (indicators) include ground-water levels, ground-water recharge altitude, ground-water discharge amounts, ground-water age (residence time), and ground-water quality. These indicators are needed to evaluate (1) long-term changes in ground-water resources or water quality caused by planned ground-water development associated with agricultural projects in these <span class="hlt">basins</span>, and (2) the feasibility of artificial recharge as a mitigation strategy to offset the potentially declining water levels associated with increased ground-water development.Ground-water levels in all three <span class="hlt">basins</span> vary from less than a few meters to more than 170 meters below land surface. Continuous recorder and electric tape measurements at three monitoring wells (one per <span class="hlt">basin</span>) showed variations between August 2005 and June 2006 of as much as 1.8 meters. Few historical water-level data were available for the Mosteiros or Ribeira Paul <span class="hlt">Basins</span>. Historical records from Ribeira Fajã indicate very large ground-water declines during the 1980s and early 1990s, associated with dewatering of the Galleria Fajã tunnel. More-recent data indicate that ground-water levels in Ribeira Fajã have reached a new equilibrium, remaining fairly constant since the late 1990s.Because of the scarcity of observation wells within each <span class="hlt">basin</span>, water-level data were combined with other techniques to evaluate ground-water conditions. These techniques include the quantification of ground-water discharge (well withdrawals, spring discharge, seepage to springs, and gallery drainage), field water-quality measurements, and the use of environmental tracers to evaluate sources of aquifer recharge, flow paths, and ground</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/of/2006/1019/','USGSPUBS'); return false;" href="https://pubs.usgs.gov/of/2006/1019/"><span>Burial and thermal history of the central Appalachian <span class="hlt">basin</span>, based on three 2-D models of Ohio, Pennsylvania, and <span class="hlt">West</span> Virginia</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Rowan, Elisabeth L.</p> <p>2006-01-01</p> <p>Introduction: Three regional-scale, cross sectional (2-D) burial and thermal history models are presented for the central Appalachian <span class="hlt">basin</span> based on the detailed geologic cross sections of Ryder and others (2004), Crangle and others (2005), and Ryder, R.T., written communication. The models integrate the available thermal and geologic information to constrain the burial, uplift, and erosion history of the region. The models are restricted to the relatively undeformed part of the <span class="hlt">basin</span> and extend from the Rome trough in <span class="hlt">West</span> Virginia and Pennsylvania northwestward to the Findlay arch in Ohio. This study expands the scope of previous work by Rowan and others (2004) which presented a preliminary burial/thermal history model for a cross section (E-E') through <span class="hlt">West</span> Virginia and Ohio. In the current study, the burial/thermal history model for E-E' is revised, and integrated with results of two additional cross sectional models (D-D' and C-C'). The burial/thermal history models provide calculated thermal maturity (Ro%) values for the entire stratigraphic sequence, including hydrocarbon source rocks, along each of the three cross sections. In contrast, the Ro and conodont CAI data available in the literature are sparse and limited to specific stratigraphic intervals. The burial/thermal history models also provide the regional temperature and pressure framework that is needed to model hydrocarbon migration.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2015HESS...19.3387M','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2015HESS...19.3387M"><span>Relating seasonal dynamics of enhanced vegetation index to the recycling of water in two endorheic river <span class="hlt">basins</span> in north-<span class="hlt">west</span> China</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Matin, M. A.; Bourque, C. P.-A.</p> <p>2015-08-01</p> <p>This study associates the dynamics of enhanced vegetation index in lowland desert oases to the recycling of water in two endorheic (hydrologically closed) river <span class="hlt">basins</span> in Gansu Province, north-<span class="hlt">west</span> China, along a gradient of elevation zones and land cover types. Each river <span class="hlt">basin</span> was subdivided into four elevation zones representative of (i) oasis plains and foothills, and (ii) low-, (iii) mid-, and (iv) high-mountain elevations. Comparison of monthly vegetation phenology with precipitation and snowmelt dynamics within the same <span class="hlt">basins</span> over a 10-year period (2000-2009) suggested that the onset of the precipitation season (cumulative % precipitation > 7-8 %) in the mountains, typically in late April to early May, was triggered by the greening of vegetation and increased production of water vapour at the base of the mountains. Seasonal evolution of in-mountain precipitation correlated fairly well with the temporal variation in oasis-vegetation coverage and phenology characterised by monthly enhanced vegetation index, yielding coefficients of determination of 0.65 and 0.85 for the two <span class="hlt">basins</span>. Convergent cross-mapping of related time series indicated bi-directional causality (feedback) between the two variables. Comparisons between same-zone monthly precipitation amounts and enhanced vegetation index provided weaker correlations. Start of the growing season in the oases was shown to coincide with favourable spring warming and discharge of meltwater from low- to mid-elevations of the Qilian Mountains (zones 1 and 2) in mid-to-late March. In terms of plant requirement for water, mid-seasonal development of oasis vegetation was seen to be controlled to a greater extent by the production of rain in the mountains. Comparison of water volumes associated with in-<span class="hlt">basin</span> production of rainfall and snowmelt with that associated with evaporation seemed to suggest that about 90 % of the available liquid water (i.e. mostly in the form of direct rainfall and snowmelt in the mountains</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/sir/2007/5222/','USGSPUBS'); return false;" href="https://pubs.usgs.gov/sir/2007/5222/"><span>Relations of Principal Components Analysis Site Scores to Algal-Biomass, Habitat, <span class="hlt">Basin</span>-Characteristics, Nutrient, and Biological-Community Data in the <span class="hlt">West</span> Fork White River <span class="hlt">Basin</span>, Indiana, 2001</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Frey, Jeffrey W.; Caskey, Brian J.; Lowe, B. Scott</p> <p>2007-01-01</p> <p>Data were gathered from July through September 2001 at 34 randomly selected sites in the <span class="hlt">West</span> Fork White River <span class="hlt">Basin</span>, Indiana for algal biomass, habitat, nutrients, and biological communities (fish and invertebrates). <span class="hlt">Basin</span> characteristics (drainage area and land use) and biological-community attributes and metric scores were determined for the <span class="hlt">basin</span> of each sampling site. Yearly Principal Components Analysis site scores were calculated for algal biomass (periphyton and seston). The yearly Principal Components Analysis site scores for the first axis (PC1) were related, using Spearman's rho, to the seasonal algal-biomass, <span class="hlt">basin</span>-characteristics, habitat, seasonal nutrient, biological-community attribute and metric score data. The periphyton PC1 site score, which was most influenced by ash-free dry mass, was negatively related to one (percent closed canopy) of nine habitat variables examined. Of the 43 fish-community attributes and metric scores examined, the periphyton PC1 was positively related to one fish-community attribute (percent tolerant). Of the 21 invertebrate-community attributes and metric scores examined, the periphyton PC1 was positively related to one attribute (Ephemeroptera, Plecoptera, and Trichoptera (EPT) index) and one metric score (EPT index metric score). The periphyton PC1 was not related to the five <span class="hlt">basin</span>-characteristic or 12 nutrient variables examined. The seston PC1 site score, which was most influenced by particulate organic carbon, was negatively related to two of the 12 nutrient variables examined: total Kjeldahl nitrogen (July) and total phosphorus (July). Of the 43 fish-community attributes and metric scores examined, the seston PC1 was negatively related to one attribute (large-river percent). Of the 21 invertebrate-community attributes and metric scores examined, the seston PC1 was negatively related to one attribute (EPT-to-total ratio). The seston PC1 was not related to the five <span class="hlt">basin</span>-characteristics or nine habitat variables</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70048250','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70048250"><span>Late Quaternary stratigraphy, sedimentology, and geochemistry of an underfilled lake <span class="hlt">basin</span> in the Puna (north-<span class="hlt">west</span> Argentina)</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>McGlue, Michael M.; Cohen, Andrew S.; Ellis, Geoffrey S.; Kowler, Andrew L.</p> <p>2013-01-01</p> <p>Depositional models of ancient lakes in thin-skinned retroarc foreland <span class="hlt">basins</span> rarely benefit from appropriate Quaternary analogues. To address this, we present new stratigraphic, sedimentological and geochemical analyses of four radiocarbon-dated sediment cores from the Pozuelos <span class="hlt">Basin</span> (PB; northwest Argentina) that capture the evolution of this low-accommodation Puna <span class="hlt">basin</span> over the past ca. 43 cal kyr. Strata from the PB are interpreted as accumulations of a highly variable, underfilled lake system represented by lake-plain/littoral, profundal, palustrine, saline lake and playa facies associations. The vertical stacking of facies is asymmetric, with transgressive and thin organic-rich highstand deposits underlying thicker, organic-poor regressive deposits. The major controls on depositional architecture and <span class="hlt">basin</span> palaeogeography are tectonics and climate. Accommodation space was derived from piggyback <span class="hlt">basin</span>-forming flexural subsidence and Miocene-Quaternary normal faulting associated with incorporation of the <span class="hlt">basin</span> into the Andean hinterland. Sediment and water supply was modulated by variability in the South American summer monsoon, and perennial lake deposits correlate in time with several well-known late Pleistocene wet periods on the Altiplano/Puna plateau. Our results shed new light on lake expansion–contraction dynamics in the PB in particular and provide a deeper understanding of Puna <span class="hlt">basin</span> lakes in general.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2016Tectp.693..340G','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2016Tectp.693..340G"><span>Deformed Neogene <span class="hlt">basins</span>, active faulting and topography in Westland: Distributed crustal mobility <span class="hlt">west</span> of the Alpine Fault transpressive plate boundary (South Island, New Zealand)</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Ghisetti, Francesca; Sibson, Richard H.; Hamling, Ian</p> <p>2016-12-01</p> <p>Tectonic activity in the South Island of New Zealand is dominated by the Alpine Fault component of the Australia-Pacific plate boundary. <span class="hlt">West</span> of the Alpine Fault deformation is recorded by Paleogene-Neogene <span class="hlt">basins</span> coeval with the evolution of the right-lateral/transpressive plate margin. Initial tectonic setting was controlled by N-S normal faults developed during Late Cretaceous and Eocene-early Miocene rifting. Following inception of the Alpine Fault (c. 25 Ma) reverse reactivation of the normal faults controlled tectonic segmentation that became apparent in the cover sequences at c. 22 Ma. Based on restored transects tied to stratigraphic sections, seismic lines and wells, we reconstruct the vertical mobility of the Top Basement Unconformity <span class="hlt">west</span> of Alpine Fault. From c. 37-35 Ma to 22 Ma subsidence was controlled by extensional faulting. After 22 Ma the region was affected by differential subsidence, resulting from eastward crustal flexure towards the Alpine Fault boundary and/or components of transtension. Transition from subsidence to uplift started at c. 17 Ma within a belt of basement pop-ups, separated by subsiding <span class="hlt">basins</span> localised in the common footwall of oppositely-dipping reverse faults. From 17 to 7-3 Ma reverse fault reactivation and uplift migrated to the WSW. Persistent reverse reactivation of the inherited faults in the present stress field is reflected by the close match between tectonic block segmentation and topography filtered at a wavelength of 25 km, i.e. at a scale comparable to crustal thickness in the region. However, topography filtered at wavelength of 75 km shows marked contrasts between the elevated Tasman Ranges region relative to regions to the south. Variations in thickness and rigidity of the Australian lithosphere possibly control N-S longitudinal changes, consistent with our estimates of increase in linear shortening from the Tasman Ranges to the regions located <span class="hlt">west</span> of the Alpine Fault bend.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2015AGUFM.T13C3025Z','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2015AGUFM.T13C3025Z"><span>Multi-phase Uplift of the Indo-Burman Ranges and Western Thrust Belt of Minbu Sub-<span class="hlt">basin</span> (<span class="hlt">West</span> Myanmar): Constraints from Apatite Fission Track Data</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Zhang, P.; Qiu, H.; Mei, L.</p> <p>2015-12-01</p> <p>The forearc regions in active continental margins are important keys to analysis geodynamic processes such as oceanic crust oblique subduction, mechanism of subduction zone, and sediments recycling. The <span class="hlt">West</span> Myanmar, interpreted as forearc silver, is the archetype example of such forearc regions subordinate to Sunda arc-trench system, and is widely debated when and how its forearc regions formed. A total of twenty-two samples were obtained from the Indo-Burman Ranges and western thrust belt of Minbu Sub-<span class="hlt">basin</span> along Taungup-Prome Road in Southwestern Myanmar (Figure 1), and five sandstone samples of them were performed at Apatite to Zircon, Inc. Three samples (M3, M5, and M11) collected from Eocene flysch and metamorphic core at the Indo-Burman Ranges revealed apatite fission track (AFT) ages ranging from 19 to 9 Ma and 6.5 to 2 Ma. Two samples (M20 and M21) acquired from the western thrust belt of Minbu Sub-<span class="hlt">basin</span> yielded AFT ages ranging from 28 to 13.5 Ma and 7.5 to 3.5 Ma. Time-temperature models based on AFT data suggest four major Cenozoic cooling episodes, Late Oligocene, Early to Middle Miocene, Late Miocene, and Pliocene to Pleistocene. The first to third episode, models suggest the metamorphic core of the Indo-Burman Ranges has experienced multi-phase rapidly uplifted during the early construction of the forearc regions. The latest episode, on which this study focused, indicated a fast westward growth of the Palaeogene accretionary wedge and a eastward propagation deformation of folding and thrusting of the western thrust belt of Minbu Sub-<span class="hlt">basin</span>. We argued that above multi-phase uplifted and deformation of the forearc regions were results of India/<span class="hlt">West</span> Burma plate's faster oblique convergence and faster sedimentation along the India/Eurasia suture zone.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70013225','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70013225"><span>Application of mineral-solution equilibria to geochemical exploration for sandstone-hosted uranium deposits in two <span class="hlt">basins</span> in <span class="hlt">west</span> central Utah.</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Miller, W.R.; Wanty, R.B.; McHugh, J.B.</p> <p>1984-01-01</p> <p>This study applies mineral-solution equilibrium methods to the interpretation of ground-water chemistry in evaluating the uranium potential of the Beaver and Milford <span class="hlt">basins</span> in <span class="hlt">west</span> central Utah. Waters were collected mainly from wells and springs at 100 sites in limited areas in the <span class="hlt">basins</span>, and in part from mixed sources. The waters were analysed for T, pH, alkalinity, specific conductance, SO4, Cl, F, NO3, Ca, Mg, Na, K, SiO2, Zn, Cu, Mo, As, U, V, Se, Li, Fe, Mn, and Al on different fractions. A computer model (WATEQ3) was used to calculate the redox potential and the state of saturation of the waters with respect to uraninite, coffinite, realgar and arsenopyrite. Mineral saturation studies have reliably predicted the location of known (none given here) U deposits and are more diagnostic of these deposits than are concentrations of indicator elements (U, Mo, As, Se). Several areas in the <span class="hlt">basins</span> have ground-water environments of reducing redox potential, favourable for precipitation of reduced U minerals, and some of these areas are saturated or near-saturated with respect to uraninite and coffinite. The approach shows only that the environment is favourable locally for precipitation of reduced U minerals, but thereby locates exploration targets for (modern?) sandstone-hosted U deposits.-G.J.N.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2008SuScT..21g5014S','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2008SuScT..21g5014S"><span>Irreversibility line and flux pinning properties in a multilayered cuprate superconductor of Ba2Ca3Cu4O8(O,F)2 (Tc = <span class="hlt">105</span> <span class="hlt">K</span>)</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Shirage, P. M.; Iyo, A.; Shivagan, D. D.; Tanaka, Y.; Kito, H.; Kodama, Y.</p> <p>2008-07-01</p> <p>Irreversibility line (IL) and flux pinning properties were investigated for a Ba2Ca3Cu4O8(O,F)2 (F-0234) multilayered cuprate superconductor with a Tc of <span class="hlt">105</span> <span class="hlt">K</span>. The intragrain critical current density (Jc) and irreversibility field (Birr) were determined by using Bean's critical state model for the grain-aligned sample (nominal composition Ba2Ca3Cu4O8.7F1.3). The irreversibility line (IL) of F-0234 is much lower than that of (Cu,C)Ba2Ca3Cu4Oy ((Cu, C)-1234) and HgBa2Ca3Cu4Oy (Hg-1234) in spite of the spacing between the superconducting blocks of F-0234 (7.3 Å) being much thinner. The double logarithmic plot of Birr field versus [1-(T/Tc) ] analysis hints that the flux line melting model has been adopted. An anisotropy factor of 65 was calculated from a 3D to 2D crossover field of about 0.95 T. Due to the high anisotropy of this system, a low IL has resulted. The flux pinning force density Fp ( ≈JcB) exhibits scaling behaviour when the magnetic field B is normalized by the Birr field. Analysis of the normalized pinning force reveals that a surface pinning mechanism is dominant and the reduced magnetic field bmax = 0.2 agrees with surface pinning mechanism with closely spaced pins.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/279692','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/279692"><span>Application of advanced reservoir characterization, simulation, and production optimization strategies to maximize recovery in slope and <span class="hlt">basin</span> clastic reservoirs, <span class="hlt">west</span> Texas (Delaware <span class="hlt">Basin</span>). Annual progress report, March 31, 1995--March 31, 1996</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Dutton, S.P.; Hovorka, S.D.; Cole, A.G.</p> <p>1996-08-01</p> <p>The objective of this Class III project is to demonstrate that detailed reservoir characterization of clastic reservoirs in <span class="hlt">basinal</span> sandstones of the Delaware Mountain Group in the Delaware <span class="hlt">Basin</span> of <span class="hlt">West</span> Texas and New Mexico is a cost-effective way to recover more of the original oil in place by strategic infill-well placement and geologically based field development. Reservoirs in the Delaware Mountain Group have low producibility (average recovery <14 percent of the original oil in place) because of a high degree of vertical and lateral heterogeneity caused by depositional processes and post-depositional diagenetic modification. Detailed correlations of the Ramsey sandstone reservoirs in Geraldine Ford field suggest that lateral sandstone continuity is less than interpreted by previous studies. The degree of lateral heterogeneity in the reservoir sandstones suggests that they were deposited by eolian-derived turbidites. According to the eolian-derived turbidite model, sand dunes migrated across the exposed shelf to the shelf break during sea-level lowstands and provided well sorted sand for turbidity currents or grain flows into the deep <span class="hlt">basin</span>.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/782430','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/782430"><span>Risk assessment of K <span class="hlt">Basin</span> twelve-inch and four-inch drain valve failure from a postulated seismic initiating event</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>MORGAN, R.G.</p> <p>1999-06-23</p> <p>The Spent Nuclear Fuel (SNF) Project will transfer metallic SNF from the Hanford <span class="hlt">105</span> <span class="hlt">K</span>-East and <span class="hlt">105</span> <span class="hlt">K-West</span> <span class="hlt">Basins</span> to safe interim storage in the Canister Storage Building in the 200 Area. The initial basis for design, fabrication, installation, and operation of the fuel removal systems was that the <span class="hlt">basin</span> leak rate which could result from a postulated accident condition would not be excessive relative to reasonable recovery operations. However, an additional potential K <span class="hlt">Basin</span> water leak path is through the K <span class="hlt">Basin</span> drain valves. Three twelve-inch drain valves are located in the main <span class="hlt">basin</span> bays along the north wall. Five four-inch drain valves are located in the north and south loadout pits (NLOP and SLOP), the weasel pit, the technical viewing pit, and the discharge chute pit. The sumps containing the valves are filled with concrete which covers the drain valve body. Visual observations indicate that only the valve's bonnet and stem are exposed above the <span class="hlt">basin</span> concrete floor for the twelve-inch drain valve and that much less of the valve's bonnet and stem are exposed above the <span class="hlt">basin</span> concrete floor for the five four-inch drain valves. It was recognized, however, that damage of the drain valve bonnet or stem during a seismic initiating event could provide a potential K <span class="hlt">Basin</span> water leak path. The objectives of this analysis are to: (1) evaluate the likelihood of damaging the three twelve-inch drain valves located along the north wall of the main <span class="hlt">basin</span> and the five four-inch drain valves located in the pits from a seismic initiating event, and (2) determine the likelihood of exceeding a specific consequence (initial leak rate) from a damaged valve. The analysis process is a risk-based uncertainty analysis where each variable is modeled using available information and engineering judgement. The uncertainty associated with each variable is represented by a probability distribution (probability density function). Uncertainty exists because of the inherent randomness</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/sim/3067/','USGSPUBS'); return false;" href="https://pubs.usgs.gov/sim/3067/"><span>Geologic Cross Section D-D' Through the Appalachian <span class="hlt">Basin</span> from the Findlay Arch, Sandusky County, Ohio, to the Valley and Ridge Province, Hardy County, <span class="hlt">West</span> Virginia</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Ryder, Robert T.; Crangle, Robert D.; Trippi, Michael H.; Swezey, Christopher S.; Lentz, Erika E.; Rowan, Elisabeth L.; Hope, Rebecca S.</p> <p>2009-01-01</p> <p>Geologic cross section D-D' is the second in a series of cross sections constructed by the U.S. Geological Survey to document and improve understanding of the geologic framework and petroleum systems of the Appalachian <span class="hlt">basin</span>. Cross section D-D' provides a regional view of the structural and stratigraphic framework of the Appalachian <span class="hlt">basin</span> from the Findlay arch in northwestern Ohio to the Valley and Ridge province in eastern <span class="hlt">West</span> Virginia, a distance of approximately 290 miles. The information shown on the cross section is based on geological and geophysical data from 13 deep drill holes, several of which penetrate the Paleozoic sedimentary rocks of the <span class="hlt">basin</span> and bottom in Mesoproterozoic (Grenville-age) crystalline basement rocks. This cross section is a companion to cross section E-E' (Ryder and others, 2008) that is located about 25 to 50 mi to the southwest. Although specific petroleum systems in the Appalachian <span class="hlt">basin</span> are not identified on the cross section, many of their key elements (such as source rocks, reservoir rocks, seals, and traps) can be inferred from lithologic units, unconformities, and geologic structures shown on the cross section. Other aspects of petroleum systems (such as the timing of petroleum generation and preferred migration pathways) may be evaluated by burial history, thermal history, and fluid flow models based on information shown on the cross section. Cross section D-D' lacks the detail to illustrate key elements of coal systems (such as paleoclimate, coal quality, and coal rank), but it does provide a general geologic framework (stratigraphic units and general rock types) for the coal-bearing section. Also, cross section D-D' may be used as a reconnaissance tool to identify plausible geologic structures and strata for the subsurface storage of liquid waste or for the sequestration of carbon dioxide.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2013Tectp.583...88L','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2013Tectp.583...88L"><span>Geophysical evidence of Cretaceous volcanics in Logone Birni <span class="hlt">Basin</span> (Northern Cameroon), Central Africa, and consequences for the <span class="hlt">West</span> and Central African Rift System</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Loule, Jean-Pierre; Pospisil, Lubomil</p> <p>2013-01-01</p> <p>Detailed analyses and interpretation realized by combining existing 2D reflection seismic and Gravity/Magnetic data of the Logone Birni <span class="hlt">Basin</span> (LBB) in the <span class="hlt">West</span> and Central African Rift System (WCAS) have revealed the distribution of the main buried volcanic bodies as well as their relationships with the structural and tectonic evolution of this <span class="hlt">basin</span>. The volcanic activity in the LBB is restricted to the Cretaceous period. Three main volcanic episodes are identified and are associated to the Neocomian, Late Albian and Cenomanian-Turonian rifting phases respectively. The volcanic bodies within the Lower Cretaceous are either lying directly on basement or are mainly interbedded with the contemporaneous sediments whereas the Upper Cretaceous bodies are morphologically expressed in the forms of dykes and sills. The volcanic activity was more intense in the western region of the central LBB (Zina sub-<span class="hlt">basin</span>) along the Cameroon-Nigeria border whereas it was scanty and scattered in the other parts of the <span class="hlt">basin</span>. The main volcanic dykes are found on the flanks of the major faults bounding basement horsts or in crestal positions in association with syndepositional faults. Although WCAS is associated with large amount of crustal extension and minor volcanism, the intense volcanic activity observed in LBB during the Cretaceous suggests that the intrusive zone during this period was confined to the basement beneath the study area flanked respectively to the north, south and southwest by the Lake Chad, Poli and Chum triple junctions. Tensional stresses generated by this localized domal uplift accounts for most of the observed tectonic structures where major faults transected the entire lithosphere, thus providing conduits for magma migration.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70012287','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70012287"><span>Hydrogeologic comparison of an acidic-lake <span class="hlt">basin</span> with a neutral-lake <span class="hlt">basin</span> in the <span class="hlt">West</span>-Central Adirondack Mountains, New York</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Peters, N.E.; Murdoch, Peter S.</p> <p>1985-01-01</p> <p>Two small headwater lake <span class="hlt">basins</span> that receive similar amounts of acidic atmospheric deposition have significantly different lake outflow pH values; pH at Panther Lake (neutral) ranges from about 4.7 to 7; that at Woods Lake (acidic) ranges from about 4.3 to 5. A hydrologic analysis, which included monthly water budgets, hydrograph analysis, examination of flow duration and runoff recession curves, calculation of ground-water storage, and an analysis of lateral flow capacity of the soil, indicates that differences in lakewater pH can be attributed to differences in the ground-water contribution to the lakes. A larger percentage of the water discharged from the neutral lake is derived from ground water than that from the acidic lake. Ground water has a higher pH resulting from a sufficiently long residence time for neutralizing chemical reactions to occur with the till. The difference in ground-water contribution is attributed to a more extensive distribution of thick till (<3m) in the neutral-lake <span class="hlt">basin</span> than in the acidic-lake <span class="hlt">basin</span>; average thickness of till in the neutral-lake <span class="hlt">basin</span> is 24m whereas that in the other is 2.3m. During the snowmelt period, as much as three months of accumulated precipitation may be released within two weeks causing the lateral flow capacity of the deeper mineral soil to be exceeded in the neutral-lake <span class="hlt">basin</span>. This excess water moves over and through the shallow acidic soil horizons and causes the lakewater pH to decrease during snowmelt.Two small headwater lake <span class="hlt">basins</span> that receive similar amounts of acidic atmospheric deposition have significantly different lake outflow pH values; pH at Panther Lake (neutral) ranges from about 4. 7 to 7; that at Woods Lake (acidic) ranges from about 4. 3 to 5. A hydrologic analysis, which included monthly water budgets, hydrograph analysis, examination of flow duration and runoff recession curves, calculation of ground-water storage, and an analysis of lateral flow capacity of the soil, indicates that</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://ngmdb.usgs.gov/Prodesc/proddesc_80828.htm','USGSPUBS'); return false;" href="http://ngmdb.usgs.gov/Prodesc/proddesc_80828.htm"><span>Stratigraphic Framework and Depositional Sequences in the Lower Silurian Regional Oil and Gas Accumulation, Appalachian <span class="hlt">Basin</span>: From Licking County, Ohio, to Fayette County, <span class="hlt">West</span> Virginia</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Ryder, Robert T.</p> <p>2006-01-01</p> <p>The Lower Silurian regional oil and gas accumulation was named by Ryder and Zagorski (2003) for a 400-mile (mi)-long by 200-mi-wide hydrocarbon accumulation in the central Appalachian <span class="hlt">basin</span> of the Eastern United States and Ontario, Canada. From the early 1880s to 2000, approximately 300 to 400 million barrels of oil and eight to nine trillion cubic feet of gas have been produced from the Lower Silurian regional oil and gas accumulation (Miller, 1975; McCormac and others, 1996; Harper and others, 1999). Dominant reservoirs in the regional accumulation are the Lower Silurian 'Clinton' and Medina sandstones in Ohio and westernmost <span class="hlt">West</span> Virginia and coeval rocks in the Lower Silurian Medina Group (Grimsby Sandstone (Formation) and Whirlpool Sandstone) in northwestern Pennsylvania and western New York. A secondary reservoir is the Upper Ordovician(?) and Lower Silurian Tuscarora Sandstone in central Pennsylvania and central <span class="hlt">West</span> Virginia, a more proximal eastern facies of the 'Clinton' sandstone and Medina Group (Yeakel, 1962; Cotter, 1982, 1983; Castle, 1998). The Lower Silurian regional oil and gas accumulation is subdivided by Ryder and Zagorski (2003) into the following three parts: (1) an easternmost part consisting of local gas-bearing sandstone units in the Tuscarora Sandstone that is included with the <span class="hlt">basin</span>-center accumulation; (2) an eastern part consisting predominantly of gas-bearing 'Clinton' sandstone-Medina Group sandstones that have many characteristics of a <span class="hlt">basin</span>-center accumulation (Davis, 1984; Zagorski, 1988, 1991; Law and Spencer, 1993); and (3) a western part consisting of oil- and gas-bearing 'Clinton' sandstone-Medina Group sandstones that is a conventional accumulation with hybrid features of a <span class="hlt">basin</span>-center accumulation (Zagorski, 1999). With the notable exception of the offshore part of Lake Erie (de Witt, 1993), the supply of oil and (or) gas in the hybrid-conventional part of the regional accumulation continues to decline because of the many</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/10122625','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/10122625"><span>California <span class="hlt">Basin</span> study (CaBS): DOE <span class="hlt">west</span> coast <span class="hlt">basin</span> program. Progress report 8, 15 November 1989--14 November 1990</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Small, L.F.</p> <p>1990-12-31</p> <p>The overall objective of our research continues to be elucidation of the transport pathways and transformations of organic matter in the California <span class="hlt">Basins</span> region, with particular reference to the role of macrozooplankton in upper waters. We have concentrated on C and N pathways and fluxes to data, and will continue to investigate these further (seasonal aspects, and the role of zooplankton carnivory in zooplankton-medicated C and N flux, for example).</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/of/1995/0162/report.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/of/1995/0162/report.pdf"><span>Physical characteristics of stream subbasins in the upper Minnesota River <span class="hlt">basin</span>, <span class="hlt">west</span>-central Minnesota, northeastern South Dakota and southeastern North Dakota</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Sanocki, C.A.</p> <p>1995-01-01</p> <p>Data that describe the physical characteristics of stream subbasins upstream from selected points on streams in the Upper Minnesota River <span class="hlt">Basin</span>, located in <span class="hlt">west</span>-central Minnesota, north-eastern South Dakota, and southeastern North Dakota, are presented in this report. The physical characteristics are the drainage area of the subbasin, the percentage area of the subbasin covered only by lakes, the percentage area of the subbasin covered by both laker and wetlands, the main-channel length, and the main-channel slope. The points on the stream include outlets of subbasins of at least 5 square miles, outlets of sewage treatment plants, and locations of U.S. Geological Survey low-flow, highflow, and continuous-record gaging stations.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/9421','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/9421"><span>Data quality objectives for sampling of sludge from the K <span class="hlt">West</span> and K East <span class="hlt">Basin</span> floor and from other <span class="hlt">Basin</span> areas</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>MAKENAS, B.J.</p> <p>1998-10-21</p> <p>This document addresses the characterization strategy for those types of sludge not previously characterized or discussed in previous DQO documents. It seeks to ascertain those characteristics of uncharacterized Sludge which are unique with respect to the properties already determined for canister and K East <span class="hlt">Basin</span> floor Sludge. Also recent decisions have resulted in the need for treatment of the Sludge prior to its currently identified disposal path to the Hanford waste tanks. This has resulted in a need for process development testing for the treatment system development.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_9");'>9</a></li> <li><a href="#" onclick='return showDiv("page_10");'>10</a></li> <li class="active"><span>11</span></li> <li><a href="#" onclick='return showDiv("page_12");'>12</a></li> <li><a href="#" onclick='return showDiv("page_13");'>13</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_11 --> <div id="page_12" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_10");'>10</a></li> <li><a href="#" onclick='return showDiv("page_11");'>11</a></li> <li class="active"><span>12</span></li> <li><a href="#" onclick='return showDiv("page_13");'>13</a></li> <li><a href="#" onclick='return showDiv("page_14");'>14</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="221"> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/465840','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/465840"><span>Application of advanced reservoir characterization, simulation, and production optimization strategies to maximize recovery in slope and <span class="hlt">basin</span> clastic reservoirs, <span class="hlt">West</span> Texas (Delaware <span class="hlt">Basin</span>). Quarterly report, October 1 - December 31, 1996</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Dutton, S.P.</p> <p>1997-01-01</p> <p>The objective of this project is to demonstrate that detailed reservoir characterization of slope and <span class="hlt">basin</span> clastic reservoirs in sandstones of the Delaware Mountain Group in the Delaware <span class="hlt">Basin</span> of <span class="hlt">West</span> Texas and New Mexico is a cost effective way to recover a higher percentage of the original oil in place through strategic placement of infill wells and geologically based field development. Project objectives are divided into two major phases. The objectives of the reservoir characterization phase of the project are to provide a detailed understanding of the architecture and heterogeneity of two fields, the Ford Geraldine unit and Ford <span class="hlt">West</span> field, which produce from the Bell Canyon and Cherry Canyon Formations, respectively, of the Delaware Mountain Group and to compare Bell Canyon and Cherry Canyon reservoirs. Reservoir characterization will utilize 3-D seismic data, high-resolution sequence stratigraphy, subsurface field studies, outcrop characterization, and other techniques. Once the reservoir-characterization study of both fields is completed, a pilot area of approximately 1 mi{sup 2} in one of the fields will be chosen for reservoir simulation. The objectives of the implementation phase of the project are to (1) apply the knowledge gained from reservoir characterization and simulation studies to increase recovery from the pilot area, (2) demonstrate that economically significant unrecovered oil remains in geologically resolvable untapped compartments, and (3) test the accuracy of reservoir characterization and flow simulation as predictive tools in resource preservation of mature fields. A geologically designed, enhanced-recovery program (CO{sub 2} flood, waterflood, or polymer flood) and well-completion program will be developed, and one to three infill wells will be drilled and cored. Technical progress is summarized for: geophysical characterization; reservoir characterization; outcrop characterization; and recovery technology identification and analysis.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/465304','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/465304"><span>Application of advanced reservoir characterization, simulation, and production optimization strategies to maximize recovery in slope and <span class="hlt">basin</span> clastic reservoirs, <span class="hlt">West</span> Texas (Delaware <span class="hlt">Basin</span>). Quarterly report, April 1,1996 - June 30, 1996</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Dutton, S.P.</p> <p>1996-07-01</p> <p>The objective of this project is to demonstrate that detailed reservoir characterization of slope and <span class="hlt">basin</span> clastic reservoirs in sandstones of the Delaware Mountain Group in the Delaware <span class="hlt">Basin</span> of <span class="hlt">West</span> Texas and New Mexico is a cost effective way to recover a higher percentage of the original oil in place through strategic placement of infill wells and geologically based field development. Project objectives are divided into two major phases. The objectives of the reservoir characterization phase of the project are to provide a detailed understanding of the architecture and heterogeneity of two fields, the Ford Geraldine unit and Ford <span class="hlt">West</span> field, which produce from the Bell Canyon and Cherry Canyon Formations, respectively, of the Delaware Mountain Group and to compare Bell Canyon and Cherry Canyon reservoirs. Reservoir characterization will utilize 3-D seismic data, high-resolution sequence stratigraphy, subsurface field studies, outcrop characterization, and other techniques. Once the reservoir- characterization study of both fields is completed, a pilot area of approximately 1 mi{sup 2} in one of the fields will be chosen for reservoir simulation. The objectives of the implementation phase of the project are to (1) apply the knowledge gained from reservoir characterization and simulation studies to increase recovery from the pilot area, (2) demonstrate that economically significant unrecovered oil remains in geologically resolvable untapped compartments, and (3) test the accuracy of reservoir characterization and flow simulation as predictive tools in resource preservation of mature fields. A geologically designed, enhanced-recovery program (CO{sub 2} flood, waterflood, or polymer flood) and well-completion program will be developed, and one to three infill wells will be drilled and cored. Progress to date is summarized for reservoir characterization.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/465319','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/465319"><span>Application of advanced reservoir characterization, simulation, and production optimization strategies to maximize recovery in slope and <span class="hlt">basin</span> clastic reservoirs, <span class="hlt">West</span> Texas (Delaware <span class="hlt">Basin</span>). Quarterly report, July 1 - September 30, 1996</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Dutton, S.P.</p> <p>1996-10-01</p> <p>The objective of this project is to demonstrate that detailed reservoir characterization of slope and <span class="hlt">basin</span> clastic reservoirs in sandstones of the Delaware Mountain Group in the Delaware <span class="hlt">Basin</span> of <span class="hlt">West</span> Texas and New Mexico is a cost effective way to recover a higher percentage of the original oil in place through strategic placement of infill wells and geologically based field development. Project objectives are divided into two major phases. The objectives of the reservoir characterization phase of the project are to provide a detailed understanding of the architecture and heterogeneity of two fields, the Ford Geraldine unit and Ford <span class="hlt">West</span> field, which produce from the Bell Canyon and Cherry Canyon Formations, respectively, of the Delaware Mountain Group and to compare Bell Canyon and Cherry Canyon reservoirs. Reservoir characterization will utilize 3-D seismic data, high-resolution sequence stratigraphy, subsurface field studies, outcrop characterization, and other techniques. Once the reservoir- characterization study of both fields is completed, a pilot area of approximately 1 mi{sup 2} in one of the fields will be chosen for reservoir simulation. The objectives of the implementation phase of the project are to (1) apply the knowledge gained from reservoir characterization and simulation studies to increase recovery from the pilot area, (2) demonstrate that economically significant unrecovered oil remains in geologically resolvable untapped compartments, and (3) test the accuracy of reservoir characterization and flow simulation as predictive tools in resource preservation of mature fields. A geologically designed, enhanced-recovery program (CO{sup 2} flood, waterflood, or polymer flood) and well-completion program will be developed, and one to three infill wells will be drilled and cored. Accomplishments for this past quarter are discussed.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/wri/1981/0079/report.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/wri/1981/0079/report.pdf"><span>Hydrologic characteristics and possible effects of surface mining in the northwestern part of <span class="hlt">West</span> Branch Antelope Creek <span class="hlt">basin</span>, Mercer County, North Dakota</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Crawley, Mark E.; Emerson, Douglas G.</p> <p>1981-01-01</p> <p>Lignite beds and abundant discontinuous sandstone beds of the Paleocene Sentinel Butte Member of the Fort Union Formation and sand and gravel beds in the Quarternary glaciofluvial deposits (Antelope Creek aquifer) are the most important aquifers for domestic and livestock water supplies in the <span class="hlt">West</span> Branch Antelope Creek <span class="hlt">basin</span>. In the Beulah-Zap lignite, ground water moves from highland area in the <span class="hlt">west</span> toward the Antelope Creek aquifer. Water levels in the basal Sentinel Butte sandstone appear to be controlled by the level of Lake Sakakawea. In the glaciofluvial deposits of the Antelope Creek aquifer water moves from a ground-water divide northwestward to Lake Sakakawea and southeastward toward the Knife River. Large water-level declines in wells completed in the lignite and shallower aquifers could be expected with mining. The effects probably would be limited to within 1 to 2 miles of an active mine. Surface-runoff duration could be altered by increased infiltration and retention in the reclaimed are and possible temporal extension of base flow could occur. Shallow ground water beneath mine sites would be expected to increase in dissolved solids and locally to contain large sodium and sulfate concentrations. In some locations movement of poor quality water toward the Antelope Creek aquifer would be expected. (USGS)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/sim/2985/','USGSPUBS'); return false;" href="https://pubs.usgs.gov/sim/2985/"><span>Geologic Cross Section E-E' through the Appalachian <span class="hlt">Basin</span> from the Findlay Arch, Wood County, Ohio, to the Valley and Ridge Province, Pendleton County, <span class="hlt">West</span> Virginia</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Ryder, Robert T.; Swezey, Christopher S.; Crangle, Robert D.; Trippi, Michael H.</p> <p>2008-01-01</p> <p>Geologic cross section E-E' is the first in a series of cross sections planned by the U.S. Geological Survey (USGS) to document and improve understanding of the geologic framework and petroleum systems of the Appalachian <span class="hlt">basin</span>. Cross section E-E' provides a regional view of the structural and stratigraphic framework of the <span class="hlt">basin</span> from the Findlay arch in northwestern Ohio to the Valley and Ridge province in eastern <span class="hlt">West</span> Virginia, a distance of approximately 380 miles (mi) (fig. 1, on sheet 1). Cross section E-E' updates earlier geologic cross sections through the central Appalachian <span class="hlt">basin</span> by Renfro and Feray (1970), Bennison (1978), and Bally and Snelson (1980) and a stratigraphic cross section by Colton (1970). Although other published cross sections through parts of the <span class="hlt">basin</span> show more structural detail (for example, Shumaker, 1985; Kulander and Dean, 1986) and stratigraphic detail (for example, Ryder, 1992; de Witt and others, 1993; Hettinger, 2001), these other cross sections are of more limited extent geographically and stratigraphically. Although specific petroleum systems in the Appalachian <span class="hlt">basin</span> are not identified on the cross section, many of their key elements (such as source rocks, reservoir rocks, seals, and traps) can be inferred from lithologic units, unconformities, and geologic structures shown on the cross section. Other aspects of petroleum systems (such as the timing of petroleum generation and preferred migration pathways) may be evaluated by burial history, thermal history, and fluid flow models based on information shown on the cross section. Cross section E-E' lacks the detail to illustrate key elements of coal systems (such as paleoclimate, coal quality, and coal rank), but it does provide a general framework (stratigraphic units and general rock types) for the coal-bearing section. Also, cross section E-E' may be used as a reconnaissance tool to identify plausible geologic structures and strata for the subsurface storage of liquid waste (for</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2010AGUFM.H31I..03V','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2010AGUFM.H31I..03V"><span>An approach for reconstructing past streamflows using a water balance model and tree-ring records in the upper <span class="hlt">West</span> Walker River <span class="hlt">basin</span>, California</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Vittori, J. C.; Saito, L.; Biondi, F.</p> <p>2010-12-01</p> <p>Historical streamflows in a given river <span class="hlt">basin</span> can be useful for determining regional patterns of drought and climate, yet such measured data are typically available for the last 100 years at most. To extend the measured record, observed streamflows can be regressed against tree-ring data that serve as proxies for streamflow. This empirical approach, however, cannot account for or test factors that do not directly affect tree-ring growth but may influence streamflow. To reconstruct past streamflows in a more mechanistic way, a seasonal water balance model has been developed for the upper <span class="hlt">West</span> Walker River <span class="hlt">basin</span> that uses proxy precipitation and air temperature data derived from tree-ring records as input. The model incorporates simplistic relationships between precipitation and other components of the hydrologic cycle, as well as a component for modeling snow, and operates at a seasonal time scale. The model allows for flexibility in manipulating various hydrologic and land use characteristics, and can be applied to other watersheds. The intent is for the model to investigate sources of uncertainty in streamflow reconstructions, and how factors such as wildfire or changes in vegetation cover could impact estimates of past flows, something regression-based models are not able to do. In addition, the use of a mechanistic water balance model calibrated against proxy climate records can provide information on changes in various components of the water cycle, including the interaction between evapotranspiration, snowmelt, and runoff under warmer climatic regimes.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2017GeoJI.208...75C','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2017GeoJI.208...75C"><span>Spatial distribution of hydrocarbon reservoirs in the <span class="hlt">West</span> Korea Bay <span class="hlt">Basin</span> in the northern part of the Yellow Sea, estimated by 3-D gravity forward modelling</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Choi, Sungchan; Ryu, In-Chang; Götze, H.-J.; Chae, Y.</p> <p>2017-01-01</p> <p>Although an amount of hydrocarbon has been discovered in the <span class="hlt">West</span> Korea Bay <span class="hlt">Basin</span> (WKBB), located in the North Korean offshore area, geophysical investigations associated with these hydrocarbon reservoirs are not permitted because of the current geopolitical situation. Interpretation of satellite-derived potential field data can be alternatively used to image the 3-D density distribution in the sedimentary <span class="hlt">basin</span> associated with hydrocarbon deposits. We interpreted the TRIDENT satellite-derived gravity field data to provide detailed insights into the spatial distribution of sedimentary density structures in the WKBB. We used 3-D forward density modelling for the interpretation that incorporated constraints from existing geological and geophysical information. The gravity data interpretation and the 3-D forward modelling showed that there are two modelled areas in the central subbasin that are characterized by very low density structures, with a maximum density of about 2000 kg m-3, indicating some type of hydrocarbon reservoir. One of the anticipated hydrocarbon reservoirs is located in the southern part of the central subbasin with a volume of about 250 km3 at a depth of about 3000 m in the Cretaceous/Jurassic layer. The other hydrocarbon reservoir should exist in the northern part of the central subbasin, with an average volume of about 300 km3 at a depth of about 2500 m.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2016GeoJI.tmp..383C','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2016GeoJI.tmp..383C"><span>Spatial distribution of Hydrocarbon Reservoirs in the <span class="hlt">West</span> Korea Bay <span class="hlt">Basin</span> in the northern part of the Yellow Sea, estimated by 3D gravity forward modeling</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Choi, Sungchan; Ryu, In-Chang; Götze, H.-J.; Chae, Y.</p> <p>2016-10-01</p> <p>Although an amount of hydrocarbon has been discovered in the <span class="hlt">West</span> Korea Bay <span class="hlt">Basin</span> (WKBB), located in the North Korean offshore area, geophysical investigations associated with these hydrocarbon reservoirs are not permitted because of the current geopolitical situation. Interpretation of satellite- derived potential field data can be alternatively used to image the three-dimensional (3D) density distribution in the sedimentary <span class="hlt">basin</span> associated with hydrocarbon deposits. We interpreted the TRIDENT satellite-derived gravity field data to provide detailed insights into the spatial distribution of sedimentary density structures in the WKBB. We used 3D forward density modeling for the interpretation that incorporated constraints from existing geological and geophysical information. The gravity data interpretation and the 3D forward modeling showed that there are two modeled areas in the central subbasin that are characterized by very low density structures, with a maximum density of about 2000 kg/m3, indicating some type of hydrocarbon reservoir. One of the anticipated hydrocarbon reservoirs is located in the southern part of the central subbasin with a volume of about 250 km3 at a depth of about 3000 m in the Cretaceous/Jurassic layer. The other hydrocarbon reservoir should exist in the northern part of the central subbasin, with an average volume of about 300 km3 at a depth of about 2500 m.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70035801','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70035801"><span>Adsorption kinetics of CO2, CH4, and their equimolar mixture on coal from the Black Warrior <span class="hlt">Basin</span>, <span class="hlt">West</span>-Central Alabama</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Gruszkiewicz, M.S.; Naney, M.T.; Blencoe, J.G.; Cole, D.R.; Pashin, J.C.; Carroll, R.E.</p> <p>2009-01-01</p> <p>Laboratory experiments were conducted to investigate the adsorption kinetic behavior of pure and mixed gases (CO2, CH4, approximately equimolar CO2 + CH4 mixtures, and He) on a coal sample obtained from the Black Warrior <span class="hlt">Basin</span> at the Littleton Mine (Twin Pine Coal Company), Jefferson County, <span class="hlt">west</span>-central Alabama. The sample was from the Mary Lee coal zone of the Pottsville Formation (Lower Pennsylvanian). Experiments with three size fractions (45-150????m, 1-2??mm, and 5-10??mm) of crushed coal were performed at 40????C and 35????C over a pressure range of 1.4-6.9??MPa to simulate coalbed methane reservoir conditions in the Black Warrior <span class="hlt">Basin</span> and provide data relevant for enhanced coalbed methane recovery operations. The following key observations were made: (1) CO2 adsorption on both dry and water-saturated coal is much more rapid than CH4 adsorption; (2) water saturation decreases the rates of CO2 and CH4 adsorption on coal surfaces, but it appears to have minimal effects on the final magnitude of CO2 or CH4 adsorption if the coal is not previously exposed to CO2; (3) retention of adsorbed CO2 on coal surfaces is significant even with extreme pressure cycling; and (4) adsorption is significantly faster for the 45-150????m size fraction compared to the two coarser fractions. ?? 2008 Elsevier B.V.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/341285','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/341285"><span>Radioactive Air Emissions Notice of Construction for the 105-KW <span class="hlt">Basin</span> integrated water treatment system filter vessel sparging vent</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Kamberg, L.D.</p> <p>1998-02-23</p> <p>This document serves as a notice of construction (NOC), pursuant to the requirements of Washington Administrative Code (WAC) 246-247-060, and as a request for approval to construct, pursuant to 40 Code of Federal Regulations (CFR) 61.07, for the Integrated Water Treatment System (IWTS) Filter Vessel Sparging Vent at 105-KW <span class="hlt">Basin</span>. Additionally, the following description, and references are provided as the notices of startup, pursuant to 40 CFR 61.09(a)(1) and (2) in accordance with Title 40 Code of Federal Regulations, Part 61, National Emission Standards for Hazardous Air Pollutants. The <span class="hlt">105</span>-<span class="hlt">K</span> <span class="hlt">West</span> Reactor and its associated spent nuclear fuel (SNF) storage <span class="hlt">basin</span> were constructed in the early 1950s and are located on the Hanford Site in the 100-K Area about 1,400 feet from the Columbia River. The 105-KW <span class="hlt">Basin</span> contains 964 Metric Tons of SNF stored under water in approximately 3,800 closed canisters. This SNF has been stored for varying periods of time ranging from 8 to 17 years. The 105-KW <span class="hlt">Basin</span> is constructed of concrete with an epoxy coating and contains approximately 1.3 million gallons of water with an asphaltic membrane beneath the pool. The IWTS, which has been described in the Radioactive Air Emissions NOC for Fuel Removal for 105-KW <span class="hlt">Basin</span> (DOE/RL-97-28 and page changes per US Department of Energy, Richland Operations Office letter 97-EAP-814) will be used to remove radionuclides from the <span class="hlt">basin</span> water during fuel removal operations. The purpose of the modification described herein is to provide operational flexibility for the IWTS at the 105-KW <span class="hlt">basin</span>. The proposed modification is scheduled to begin in calendar year 1998.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/6546039','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/6546039"><span>Genetic sequence stratigraphy of upper Desmoinesian Oswego limestone along northern shelf margin of Anadarko <span class="hlt">basin</span>, <span class="hlt">West</span>-Central Oklahoma</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Derstine, T.P.</p> <p>1988-01-01</p> <p>The Pennsylvania Oswego limestone (upper Desmoinesian) in the vicinity of the northern shelf break of the Anadarko <span class="hlt">basin</span> contains stratigraphic sequences and associated depositional facies that were controlled by eustatic variations in a slowly subsiding <span class="hlt">basin</span>. Core descriptions, detailed well-log correlations, and facies maps of Oswego limestone in Dewey and Custer Counties, Oklahoma, supplemented by seismic data along dip profile, define at least two principal stratigraphic sequences separated by regional unconformities. In this area, oil and gas have been produced from phylloid algal-bank deposits that formed at the shelf margin. The algal-bank deposits that contain vuggy and moldic porosity are bound northward by wackestones of shelf facies and southward by tightly calcite-cemented packstones that formed on the seaward margin in relatively high-energy environments. The detailed well-log correlations that consider genetic units illustrate the evolution of these carbonate and locally clastic deposits along Oswego shelf-ramp-<span class="hlt">basin</span> profiles as a consequence of sea level oscillations. Repeated succession of upward-coarsening shelf wackestones, algal-bank deposits with fringing packstones and scattered terrigenous clastics, and <span class="hlt">basinal</span> shales are a depositional system tract associated with sea level lowstand. This lowstand system is capped in one of the principal stratigraphic sequences by a thin shale that reflects an episode of rapid relative sea level rise and flooding of the Oswego carbonate shelf. Black shales deposited during this rapid flooding event form a problematic downlapping unit, because terrigenous sediment was evidently supplied from both the Oklahoma-Kansas area to the north and the Wichita-Amarillo high to the south. Highstand carbonate facies system are not present in the shaly cyclic sequences indicating drowning or backstepping of carbonate sources.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2016EGUGA..18.1598D','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2016EGUGA..18.1598D"><span>Intraplate compressional deformation in <span class="hlt">West</span>-Congo and the Congo <span class="hlt">basin</span>: related to ridge-puch from the South Atlantic spreading ridge?</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Delvaux, Damien; Everaerts, Michel; Kongota Isasi, Elvis; Ganza Bamulezi, Gloire</p> <p>2016-04-01</p> <p>After the break-up and separation of South America from Africa and the initiation of the South-Atlantic mid-oceanic ridge in the Albian, at about 120 Ma, ridge-push forces started to build-up in the oceanic lithosphere and were transmitted to the adjacent continental plates. This is particularly well expressed in the passive margin and continental interior of Central Africa. According to the relations of Wiens and Stein (1985) between ridge-push forces and basal drag in function of the lithospheric age of oceanic plates, the deviatoric stress reaches a compressional maximum between 50 and 100, Ma after the initiation of the spreading ridge, so broadly corresponding to the Paleocene in this case (~70-20 Ma). Earthquake focal mechanism data show that the <span class="hlt">West</span>-Congo margin and a large part of the Congo <span class="hlt">basin</span> are still currently under compressional stresses with an horizontal compression parallel to the direction of the active transform fracture zones. We studied the fracture network along the Congo River in Kinshasa and Brazzaville which affect Cambrian sandstones and probably also the late Cretaceous-Paleocene sediments. Their brittle tectonic evolution is compatible with the buildup of ridge-push forces related to the South-Atlantic opening. Further inland, low-angle reverse faults are found affecting Jurassic to Middle Cretaceous cores from the Samba borehole in the Congo <span class="hlt">basin</span> and strike-slip movements are recorded as a second brittle phase in the Permian cores of the Dekese well, at the southern margin of the Congo <span class="hlt">basin</span>. An analysis of the topography and river network of the Congo <span class="hlt">basin</span> show the development of low-amplitude (50-100 m) long wavelengths (100-300 km) undulations that can be interpreted as lithospheric buckling in response to the compressional intraplate stress field generated by the Mid-Atlantic ridge-push. Wiens, D.A., Stein, S., 1985. Implications of oceanic intraplate seismicity for plate stresses, driving forces and theology. Tectonophysics</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/896541','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/896541"><span>Geologic Controls of Hydrocarbon Occurrence in the Southern Appalachian <span class="hlt">Basin</span> in Eastern Tennessee, Southwestern Virginia, Eastern Kentucky, and Southern <span class="hlt">West</span> Virginia</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Robert D. Hatcher</p> <p>2004-05-31</p> <p>This report summarizes the second-year accomplishments of a three-year program to investigate the geologic controls of hydrocarbon occurrence in the southern Appalachian <span class="hlt">basin</span> in eastern Tennessee, southwestern Virginia, eastern Kentucky, and southern <span class="hlt">West</span> Virginia. The project: (1) employs the petroleum system approach to understand the geologic controls of hydrocarbons; (2) attempts to characterize the T-P parameters driving petroleum evolution; (3) attempts to obtain more quantitative definitions of reservoir architecture and identify new traps; (4) is working with USGS and industry partners to develop new play concepts and geophysical log standards for subsurface correlation; and (5) is geochemically characterizing the hydrocarbons (cooperatively with USGS). Second-year results include: All current milestones have been met and other components of the project have been functioning in parallel toward satisfaction of year-3 milestones. We also have been effecting the ultimate goal of the project in the dissemination of information through presentations at professional meetings, convening a major workshop in August 2003, and the publication of results. Our work in geophysical log correlation in the Middle Ordovician units is bearing fruit in recognition that the criteria developed locally in Tennessee and southern Kentucky have much greater extensibility than anticipated earlier. We have identified a major 60 mi-long structure in the western part of the Valley and Ridge thrust belt that is generating considerable exploration interest. If this structure is productive, it will be one of the largest structures in the Appalachians. We are completing a more quantitative structural reconstruction of the Valley and Ridge than has been made before. This should yield major dividends in future exploration in the southern Appalachian <span class="hlt">basin</span>. Our work in mapping, retrodeformation, and modeling of the Sevier <span class="hlt">basin</span> is a major component of the understanding of the Ordovician</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/circ/circ1204/','USGSPUBS'); return false;" href="https://pubs.usgs.gov/circ/circ1204/"><span>Water quality in the Kanawha-New River <span class="hlt">basin</span>; <span class="hlt">West</span> Virginia, Virginia, and North Carolina, 1996-98</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Paybins, Katherine S.; Messinger, Terence; Eychaner, James H.; Chambers, Douglas B.; Kozar, Mark D.</p> <p>2000-01-01</p> <p>This report summarizes major findings about water quality in the Kanawha-New River <span class="hlt">basin</span> that emerged from an assessment conducted between 1996 and 1998 by the U.S. Geological Survey (USGS) National Water-Quality Assessment (NAWQA) Program. Water quality is discussed in terms of local and regional issues and compared to conditions found in all 36 NAWQA study areas assessed to date. Findings also are explained in the context of selected national benchmarks, such as those for drinking-water quality and the protection of aquatic organisms.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/25433386','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/25433386"><span>Assessment of the health status of wild fish inhabiting a cotton <span class="hlt">basin</span> heavily impacted by pesticides in Benin (<span class="hlt">West</span> Africa).</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Agbohessi, Prudencio T; Imorou Toko, Ibrahim; Ouédraogo, Alfred; Jauniaux, Thierry; Mandiki, S N M; Kestemont, Patrick</p> <p>2015-02-15</p> <p>To determine the impact of agricultural pesticides used in cotton cultivation on the health status of fish living in a Beninese cotton <span class="hlt">basin</span>, we compared the reproductive and hepatic systems of fish sampled from rivers located in both contaminated and pristine conditions. Different types of biomarkers, including biometric indices (a condition factor K, a gonadosomatic index GSI, and a hepatosomatic index HSI), plasma levels of sex steroids (11-ketotestosterone 11-KT, testosterone T and estradiol-17β E2) and the histopathology of the gonads and liver, were investigated for two different trophic levels of the following two fish species: the Guinean tilapia Tilapia guineensis and the African catfish Clarias gariepinus. The fish were captured during both the rainy season (when there is heavy use of pesticides on cotton fields) and the dry season from one site, in Pendjari River (reference site), which is located outside the cotton-producing <span class="hlt">basin</span>, and from three other sites on the Alibori River within the cotton-producing <span class="hlt">basin</span>. Comparing fish that were sampled from contaminated (high levels of endosulfan, heptachlor and DDT and metabolites) and reference sites, the results clearly indicated that agricultural pesticides significantly decreased K and GSI while they increased HSI, regardless of the season, species and sex of the fish. These pesticides also induced a decrease in the plasma levels of 11-KT and T and increased those of E2. The histopathology of the testes revealed, in both species, a high rate of testicular oocytes, up to 50% in the African catfish, downstream of the Alibori River, which indicated estrogenic effects from the pesticides. The disruption of male spermatogenesis primarily included necrosis, fibrosis and the presence of foam cells in the lobular lumen. The histopathology of the ovaries revealed high levels of pre-ovulatory follicular atresia, impaired oogenesis, a decrease in the oocyte vitellogenic diameter and other lesions, such as fibrosis</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2004JAfES..39..459K','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2004JAfES..39..459K"><span>Dust deposits in Souss?Massa <span class="hlt">basin</span>, South-<span class="hlt">West</span> of Morocco: granulometrical, mineralogical and geochemical characterisation</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Khiri, F.; Ezaidi, A.; Kabbachi, K.</p> <p>2004-08-01</p> <p>Samples of dust deposits were periodically collected from July 1, 1997 to January 30, 1999, at Souss-Massa <span class="hlt">basin</span>, in the South of Morocco. Granulometrical, geochemical and mineralogical characterisations show that quartz, calcite and feldspars dominate the mineral contents of the dust deposit with a minor clay fraction. It indicates the mineralogical composition of dust collected in peri-Saharan regions. The material collected in the summer period is dominated by local dust against a mixture of local and proximal dusts in the winter period.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70011703','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70011703"><span>Paleoecological studies at Lake Patzcuaro on the <span class="hlt">west</span>-central Mexican Plateau and at Chalco in the <span class="hlt">basin</span> of Mexico</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Watts, W.A.; Bradbury, J.P.</p> <p>1982-01-01</p> <p>A 1520-cm sediment core from Lake Patzcuaro, Michoacan, Mexico, is 44,000 yr old at the base. All parts of the core have abundant pollen of Pinus (pine), Alnus (alder), and Quercus (oak) with frequent Abies (fir). The interval dated from 44,000 to 11,000 yr ago has a homogeneous flora characterized by abundant Juniperus (juniper) pollen and frequent Artemisia (sagebrush). It is believed to represent an appreciably drier and colder climate than at present. The Holocene at Lake Patzcuaro is characterized by a moderate increase in Pinus pollen and the loss of Juniperus pollen, as the modern type of climate succeeded. Alnus was abundant until about 5000 yr ago; its abrupt decrease with the first appearance of herbaceous weed pollen may reflect the cutting of lake-shore and stream-course alder communities for agricultural purposes, or it may simply reflect a drying tendency in the climate. Pollen of Zea (corn) appears at Lake Patzcuaro along with low peaks of chenopod and grass pollen at 3500 yr B.P. apparently recording a human population large enough to modify the natural environment, as well as the beginning of agriculture. A rich aquatic flora in this phase suggests eutrophication of the lake by slope erosion. In the most recent period corn is absent from the sediments, perhaps reflecting a change in agricultural practices. The environment changes at Lake Patzcuaro are similar to and correlate with those in the Cuenca de Mexico, where diatom stratigraphy from the Chalco <span class="hlt">basin</span> indicates fluctuations in lake levels and lake chemistry in response to variations in available moisture. Before 10,000 yr ago climates there were cool and dry, and the Chalco <span class="hlt">basin</span> was occupied by a shallow freshwater marsh that drained north to Lake Texcoco, where saline water accumulated by evaporation. Increases in effective moisture and possible melting of glaciers during the Holocene caused lake levels to rise throughout the Cuenca de Mexico, and Lake Texcoco flooded the Chalco <span class="hlt">basin</span> with</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/circ/circ1202/','USGSPUBS'); return false;" href="https://pubs.usgs.gov/circ/circ1202/"><span>Water quality in the Allegheny and Monongahela River <span class="hlt">basins</span>, Pennsylvania, <span class="hlt">West</span> Virginia, New York, and Maryland, 1996-98</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Anderson, Robert M.; Beer, Kevin M.; Buckwalter, Theodore F.; Clark, Mary E.; McAuley, Steven D.; Sams, James I.; Williams, Donald R.</p> <p>2000-01-01</p> <p>Major influences and findings for ground water quality, surface water quality, and biology in the Allegheny and Monongahela River <span class="hlt">basins</span> are described and illustrated. Samples were collected in a variety of media to determine trace elements, sulfate, pesticides, nitrate, volatile organic compounds, organochlorine compounds, and radon-222. This report discusses the influences of several land-use practices, such as coal mining, urbanization, agriculture, and forestry. The report also includes a summary of a regional investigation of water quality and quality invertebrates in the Northern and Central Appalachian coal regions.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/of/1978/0577/report.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/of/1978/0577/report.pdf"><span>Magnitudes, nature, and effects of point and nonpoint discharges in the Chattahoochee River <span class="hlt">basin</span>, Atlanta to <span class="hlt">West</span> Point Dam, Georgia</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Stamer, J.K.; Cherry, R.N.; Faye, R.E.; Kleckner, R.L.</p> <p>1978-01-01</p> <p>On an average annual basis and during the storm period of March 12-15, 1976, nonpoint-source loads for most constituents were larger than point-source loads at the Whitesburg station, located on the Chattahoochee River about 40 miles downstream from Atlanta, GA. Most of the nonpoint-source constituent loads in the Atlanta to Whitesburg reach were from urban areas. Average annual point-source discharges accounted for about 50 percent of the dissolved nitrogen, total nitrogen, and total phosphorus loads and about 70 percent of the dissolved phosphorus loads at Whitesburg. During a low-flow period, June 1-2, 1977, five municipal point-sources contributed 63 percent of the ultimate biochemical oxygen demand, and 97 percent of the ammonium nitrogen loads at the Franklin station, at the upstream end of <span class="hlt">West</span> Point Lake. Dissolved-oxygen concentrations of 4.1 to 5.0 milligrams per liter occurred in a 22-mile reach of the river downstream from Atlanta due about equally to nitrogenous and carbonaceous oxygen demands. The heat load from two thermoelectric powerplants caused a decrease in dissolved-oxygen concentration of about 0.2 milligrams per liter. Phytoplankton concentrations in <span class="hlt">West</span> Point Lake, about 70 miles downstream from Atlanta, could exceed three million cells per millimeter during extended low-flow periods in the summer with present point-source phosphorus loads. (Woodard-USGS)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2012JAESc..45..106Z','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2012JAESc..45..106Z"><span>Ichnological constraints on the depositional environment of the Sawahlunto Formation, Kandi, northwest Ombilin <span class="hlt">Basin</span>, <span class="hlt">west</span> Sumatra, Indonesia</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Zonneveld, J.-P.; Zaim, Y.; Rizal, Y.; Ciochon, R. L.; Bettis, E. A.; Aswan; Gunnell, G. F.</p> <p>2012-02-01</p> <p>A low diversity trace fossil assemblage is described from the Oligocene Sawahlunto Formation near Kandi, in the northwestern part of the Ombilin <span class="hlt">Basin</span> in western Sumatra, Indonesia. This trace fossil assemblage includes six ichnogenera attributed to invertebrate infaunal and epifaunal activities ( Arenicolites, Diplocraterion, Planolites, Monocraterion/ Skolithos and Coenobichnus) and two ichnotaxa attributed to vertebrate activity (avian footprints: two species of Aquatilavipes). Arenicolites, Diplocraterion and Monocraterion/ Skolithos record the suspension feeding activities of either arthropods (most likely amphipods) or vermiform organisms. Planolites reflects the presence of an infaunal deposit feeder. Coenobichnus records the walking activities of hermit crabs. Both the Coenobichnus and the avian footprints record the surficial detritus scavenging of epifaunal organisms within a subaerial setting. These traces occur within a fine-grained sandstone succession characterized by planar laminae and low-relief, asymmetrical, commonly mud-draped (locally bidirectional) ripples. The presence of traces attributable to suspension feeders implies deposition in a subaqueous setting. Their occurrence (particularly the presence of Arenicolites and Diplocraterion) in a sandstone bed characterized by mud-draped and bidirectional ripples implies emplacement in a tidally-influenced marine to marginal marine setting. Co-occurrence of these traces with well-preserved avian footprints ( Aquatilavipes) further implies periodic subaerial exposure. Thus, it is most likely that the Sawahlunto Formation near Kandi records deposition within an intertidal flat setting. Definitive evidence of marine influences in the Oligocene interval of the Ombilin <span class="hlt">Basin</span> implies a more complex tectono-stratigraphic history than has previously been implied.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_10");'>10</a></li> <li><a href="#" onclick='return showDiv("page_11");'>11</a></li> <li class="active"><span>12</span></li> <li><a href="#" onclick='return showDiv("page_13");'>13</a></li> <li><a href="#" onclick='return showDiv("page_14");'>14</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_12 --> <div id="page_13" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_11");'>11</a></li> <li><a href="#" onclick='return showDiv("page_12");'>12</a></li> <li class="active"><span>13</span></li> <li><a href="#" onclick='return showDiv("page_14");'>14</a></li> <li><a href="#" onclick='return showDiv("page_15");'>15</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="241"> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2015EGUGA..1713385A','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2015EGUGA..1713385A"><span>A Remote Sensing-Based Land Surface Phenology Application for Cropland Monitoring in the Volta River <span class="hlt">Basin</span> of <span class="hlt">West</span> Africa</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Abd Salam El Vilaly, Mohamed; El Vilaly, Audra; Badiane, Ousmane</p> <p>2015-04-01</p> <p>Understanding the complex feedbacks between climate, environmental change, and human activities is essential to the development of sustainable agricultural systems. A key aspect of crop production that shows immediate response to climate change is crop phenology, which defines the shape and progress of the growing season and is an integrator of all environmental factors controlling crop production. This research aims to characterize remote sensing-based land surface phenology of cropped areas and compare them to the actual crop growing seasons recorded by farmers: planting, emergences, flowering, fruiting, and harvest date. We use the 2000-2013 MODIS Terra 16-day record of vegetation index to extract 4 phenometrics (Start and Length of Growing Season, Date of Growing Season Peak, and the Growing Season Cumulative Signal). Most of these metrics are simple time-related phenometrics. A spatiotemporal phenological characterization of cropped/managed lands in the <span class="hlt">basin</span> already shows distinct response patterns and trajectories along climate gradients. This permits us to monitor cropped lands and their responses to disturbances, such as drought, fire, flooding, and human activities. In turn, interviewing farmers in the <span class="hlt">basin</span> and consulting their phenological records. This study will allow for robust validation of remote sensing LSP algorithms, and more crucially, will help characterize any remote sensing-based metrics that contrast with the actual biological phenophases of monitored crops. In terms of its larger significance, this study demonstrates the fundamental role that remote sensing plays in global agriculture in informing conservation and management practices.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2005HESSD...2..449A','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2005HESSD...2..449A"><span>Using a spatio-temporal dynamic state-space model with the EM algorithm to patch gaps in daily riverflow series, with examples from the Volta <span class="hlt">Basin</span>, <span class="hlt">West</span> Africa</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Amisigo, B. A.; van de Giesen, N. C.</p> <p>2005-04-01</p> <p>A spatio-temporal linear dynamic model has been developed for patching short gaps in daily river runoff series. The model was cast in a state-space form in which the state variable was estimated using the Kalman smoother (RTS smoother). The EM algorithm was used to concurrently estimate both parameter and missing runoff values. Application of the model to daily runoff series in the Volta <span class="hlt">Basin</span> of <span class="hlt">West</span> Africa showed that the model was capable of providing good estimates of missing runoff values at a gauging station from the remaining series at the station and at spatially correlated stations in the same sub-<span class="hlt">basin</span>.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/of/2006/1393/','USGSPUBS'); return false;" href="https://pubs.usgs.gov/of/2006/1393/"><span>A Reconnaissance for Emerging Contaminants in the South Branch Potomac River, Cacapon River, and Williams River <span class="hlt">Basins</span>, <span class="hlt">West</span> Virginia, April-October 2004</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Chambers, Douglas B.; Leiker, Thomas J.</p> <p>2006-01-01</p> <p>In 2003 a team of scientists from <span class="hlt">West</span> Virginia Division of Natural Resources and the U. S. Geological Survey found a high incidence of an intersex condition, oocytes in the testes, among smallmouth bass (Micropterus dolomieu) in the South Branch Potomac River and the Cacapon River of <span class="hlt">West</span> Virginia, indicating the possible presence of endocrine-disrupting compounds (EDCs). Possible sources of EDCs include municipal and domestic wastewater, and agricultural and industrial activities. Several sampling strategies were used to identify emerging contaminants, including potential EDCs, and their possible sources in these river <span class="hlt">basins</span> and at an out-of-<span class="hlt">basin</span> reference site. Passive water-sampling devices, which accumulate in-stream organic chemical compounds, were deployed for 40-41 days at 8 sampling sites. Sampler extracts were analyzed for a broad range of polar and non-polar organic compounds including pesticides, flame retardants, pharmaceuticals, and personal-care products. Analysis of passive-sampler extracts found 4 compounds; hexachloro-benzene; pentachloroanisole; 2,2',4,4',5-penta-bromo-diphenyl ether (BDE 47); and 2,2',4,4',6-penta-bromo-diphenyl ether (BDE 99) to be present at every sampled site, including the reference site, and several sites had detectable quantities of other compounds. No detectable quantity of any antibiotics was found in any passive-sampler extract. Effluent samples were analyzed for 39 antibiotics as tracers of human and agricultural waste. Additionally, poultry-processing plant effluent was sampled for roxarsone, an organoarsenic compound used as a poultry-feed additive, and other arsenic species as tracers of poultry waste. Antibiotics were detected in municipal wastewater, aquaculture, and poultry-processing effluent, with the highest number of antibiotics and the greatest concentrations found in municipal effluent. Arsenate was the only arsenic species detected in the poultry-processing plant effluent, at a concentration of 1.0 ?g</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2016SedG..341..175A','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2016SedG..341..175A"><span>Permian paleogeography of <span class="hlt">west</span>-central Pangea: Reconstruction using sabkha-type gypsum-bearing deposits of Parnaíba <span class="hlt">Basin</span>, Northern Brazil</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Abrantes, Francisco R.; Nogueira, Afonso C. R.; Soares, Joelson L.</p> <p>2016-07-01</p> <p>Extreme aridity during Late Permian - Early Triassic period was the main factor for resetting the entire paleoclimate of the planet. Permian evaporite <span class="hlt">basins</span> and lacustrine red beds were widely distributed along the supercontinent of Pangea. Sulphate deposits in Western Pangea, particularly in Northern Brazil, accumulated in an extensive playa lake system. Outcrop-based facies and stratigraphic analysis of up to 20 m thick evaporite-siliciclastic deposits reveal the predominance of laminated reddish mudstone with subordinate limestone, marl and lenses of gypsum. The succession was deposited in shallow lacustrine and inland sabkha environments associated with saline pans and mudflats. Gypsum deposits comprise six lithofacies: 1) bottom-growth gypsum, 2) nodular/micronodular gypsum, 3) mosaic gypsum, 4) fibrous/prismatic gypsum, 5) alabastrine gypsum, and 6) rosettes of gypsum. Gypsum types 1 and 2 are interpreted as primary deposition in saline pans. Bottom-growth gypsum forms grass-like crusts while nodular/micronodular gypsum indicates displacive precipitation of the crust in shallow water and the groundwater capillary zone. Types 3 and 4 are early diagenetic precipitates. Abundant inclusions of tiny lath-like anhydrite crystals suggest a primary origin of anhydrite. Alabastrine gypsum, fibrous gypsum (satinspar) and rosettes of gypsum probably derived from near-surface hydration of anhydrite. The gypsum-bearing deposits in the Parnaíba <span class="hlt">Basin</span> contribute towards understanding paleogeographic changes in Western Pangea. A progressive uplift of East Pangea, culminated in the forced regression and retreat of epicontinental seas to the <span class="hlt">West</span>. Restricted seas or large lakes were formed before the definitive onset of desert conditions in Pangea, leading to the development of extensive ergs.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2017JAfES.130..102E','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2017JAfES.130..102E"><span>Hydrocarbon source potential of the Tanezzuft Formation, Murzuq <span class="hlt">Basin</span>, south-<span class="hlt">west</span> Libya: An organic geochemical approach</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>El Diasty, W. Sh.; El Beialy, S. Y.; Anwari, T. A.; Batten, D. J.</p> <p>2017-06-01</p> <p>A detailed organic geochemical study of 20 core and cuttings samples collected from the Silurian Tanezzuft Formation, Murzuq <span class="hlt">Basin</span>, in the south-western part of Libya has demonstrated the advantages of pyrolysis geochemical methods for evaluating the source-rock potential of this geological unit. Rock-Eval pyrolysis results indicate a wide variation in source richness and quality. The basal Hot Shale samples proved to contain abundant immature to early mature kerogen type II/III (oil-gas prone) that had been deposited in a marine environment under terrigenous influence, implying good to excellent source rocks. Strata above the Hot Shale yielded a mixture of terrigenous and marine type III/II kerogen (gas-oil prone) at the same maturity level as the Hot Shale, indicating the presence of only poor to fair source rocks.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/6138210','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/6138210"><span>Karst development in the Tobosa <span class="hlt">basin</span> (Ordovician-Devonian) strata in the El Paso border region of <span class="hlt">west</span> Texas</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Lemone, D.V. . Dept. of Geological Sciences)</p> <p>1993-02-01</p> <p>Karst development within the Tobosa <span class="hlt">basin</span> strata in the El Paso border region is best displayed during two time intervals: Middle Ordovician (27 Ma) developed on the Lower Ordovician El Paso Group and Middle Silurian to Middle Devonian (40 Ma) karst developed on the Lower-Middle Fusselman Formation. These major exposure intervals are recognized in regional outcrops as well as in the subsurface of the Permian <span class="hlt">Basin</span> where they form major reservoirs. Minor local karsting is noted also within and upon the Upper Ordovician (Montoya Group) and within the shoaling upward members of overlying the Fusselman Formation. Middle Ordovician karsting with major cavern development extends down into McKellingon Canyon Formation approximately 1,000 feet below the top of the Lower Ordovician El Paso Group. The McKellingon is overlain by the cavern roof-forming early diagenetic dolomites, lower Scenic Drive Formation which in turn is overlain by the locally karsted upper Scenic Drive and Florida Mountains formations. Collapse of the overlying Montoya Group into El Paso Group rocks is observed. The Fusselman Formation rests disconformably on the Montoya Group. It is a massive, vuggy, fine- to coarsely-crystalline, whitish dolomite. Extensive karsting has developed on the top of the Fusselman. The middle Devonian Canutillo Formation with a basal flooding deposit overlies this karst surface. Minor karsting following fracture systems extends from the major karst of the El Paso Group up into the major karst in the Fusselman. The karst seems to be following and developing along the same linear fracture systems. If so, it is not unreasonable to interpret these fracture systems as being inherited from the earlier Precambrian structures underlying them.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/pp/pp1713/19/pp1713_ch19.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/pp/pp1713/19/pp1713_ch19.pdf"><span>Eocene Total Petroleum System -- North and East of the Eocene <span class="hlt">West</span> Side Fold Belt Assessment Unit of the San Joaquin <span class="hlt">Basin</span> Province: Chapter 19 in Petroleum systems and geologic assessment of oil and gas in the San Joaquin <span class="hlt">Basin</span> Province, California</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Gautier, Donald L.; Hosford Scheirer, Allegra</p> <p>2009-01-01</p> <p>The North and East of Eocene <span class="hlt">West</span> Side Fold Belt Assessment Unit (AU) of the Eocene Total Petroleum System of the San Joaquin <span class="hlt">Basin</span> Province comprises all hydrocarbon accumulations within the geographic and stratigraphic limits of this confirmed AU. Oil and associated gas accumulations occur in Paleocene through early middle Miocene marine to nonmarine sandstones found on the comparatively stable northeast shelf of the <span class="hlt">basin</span>. The assessment unit is located north and east of the thickest accumulation of Neogene sediments and the <span class="hlt">west</span> side fold belt. The area enclosed by the AU has been affected by only mild deformation since Eocene time. Traps containing known accumulations are mostly low-relief domes, anticlines, and up-dip <span class="hlt">basin</span> margin traps with faulting and stratigraphic components. Map boundaries of the assessment unit are shown in figures 19.1 and 19.2; this assessment unit replaces the Northeast Shelf of Neogene <span class="hlt">Basin</span> play 1006, the East Central <span class="hlt">Basin</span> and Slope North of Bakersfield Arch play 1010, and part of the <span class="hlt">West</span> Side Fold Belt Sourced by Pre-middle Miocene Rocks play 1005 considered by the U.S. Geological Survey (USGS) in their 1995 National Assessment (Beyer, 1996). Stratigraphically, the AU includes rocks from the uppermost crystalline basement to the topographic surface. In the region of overlap with the Central <span class="hlt">Basin</span> Monterey Diagenetic Traps Assessment Unit, the North and East of Eocene <span class="hlt">West</span> Side Fold Belt AU extends from basement rocks to the top of the Temblor Formation (figs. 19.3 and 19.4). In map view, the northern boundary of the assessment unit corresponds to the northernmost extent of Eocene-age Kreyenhagen Formation. The northeast boundary is the eastern limit of possible oil reservoir rocks near the eastern edge of the <span class="hlt">basin</span>. The southeast boundary corresponds to the pinch-out of Stevens sand of Eckis (1940) to the south, which approximately coincides with the northern flank of the Bakersfield Arch (fig. 19.1). The AU is bounded on the</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/bul/b1839k/','USGSPUBS'); return false;" href="https://pubs.usgs.gov/bul/b1839k/"><span>Stratigraphic framework of Cambrian and Ordovician rocks in the central Appalachian <span class="hlt">Basin</span> from Medina County, Ohio, through southwestern and south-central Pennsylvania to Hampshire County, <span class="hlt">West</span> Virginia</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Ryder, Robert T.; Harris, Anita G.; Repetski, John E.; revised and digitized by Crangle, Robert D.</p> <p>2003-01-01</p> <p>A 275-mi-long restored stratigraphic cross section from Medina County, Ohio, through southwestern and south-central Pennsylvania to Hampshire County, W. Va., provides new details on Cambrian and Ordovician stratigraphy in the central Appalachian <span class="hlt">basin</span> and the structure of underlying Precambrian basement rocks. From <span class="hlt">west</span> to east, the major structural elements of the block-faulted basement in this section are (1) the relatively stable, slightly extended craton, which includes the Wooster arch, (2) the fault-controlled Ohio-<span class="hlt">West</span> Virginia hinge zone, which separates the craton from the adjoining Rome trough, (3) the Rome trough, which consists of an east-facing asymmetric graben and an overlying sag <span class="hlt">basin</span>, and (4) a positive fault block, named here the South-central Pennsylvania arch, which borders the eastern margin of the graben part of the Rome trough. Pre-Middle Ordovician structural relief on Precambrian basement rocks across the down-to-the-<span class="hlt">west</span> normal fault that separates the Rome trough and the adjoining South-central Pennsylvania arch amounted to between 6,000 and 7,000 ft. The restored cross section shows eastward thickening of the Cambrian and Ordovician sequence from about 3,000 ft near the crest of the Wooster arch at the western end of the section to about 5,150 ft at the Ohio-<span class="hlt">West</span> Virginia hinge zone adjoining the western margin of the Rome trough to about 19,800 ft near the depositional axis of the Rome trough. East of the Rome trough, at the adjoining western edge of the South-central Pennsylvania arch, the Cambrian and Ordovician sequence thins abruptly to about 13,500 ft and then thins gradually eastward across the arch to about 12,700 ft near the Allegheny structural front and to about 10,150 ft at the eastern end of the restored section. In general, the Cambrian and Ordovician sequence along this section consists of four major lithofacies that are predominantly shallow marine to peritidal in origin. In ascending stratigraphic order, the lithofacies</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/of/ofr01277/','USGSPUBS'); return false;" href="https://pubs.usgs.gov/of/ofr01277/"><span>Geologic, hydrologic, and water-quality data from multiple-well monitoring sites in the Central and <span class="hlt">West</span> Coast <span class="hlt">basins</span>, Los Angeles County, California, 1995-2000</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Land, Michael; Everett, R.R.; Crawford, S.M.</p> <p>2002-01-01</p> <p>In 1995, the U.S. Geological Survey (USGS), in cooperation with the HYPERLINK 'http://wrd.org' Water Replenishment District of Southern California (WRDSC), began a study to examine ground-water resources in the Central and <span class="hlt">West</span> Coast <span class="hlt">Basins</span> in Los Angeles County, California. The study characterizes the geohydrology and geochemistry of the regional ground-water flow system and provides extensive data for evaluating ground-water management issues. This report is a compilation of geologic, hydrologic, and water-quality data collected from 24 recently constructed multiple-well monitoring sites for the period 1995?2000. Descriptions of the collected drill cuttings were compiled into lithologic logs, which are summarized along with geophysical logs?including gamma-ray, spontaneous potential, resistivity, electromagnetic induction, and temperature tool logs?for each monitoring site. At selected sites, cores were analyzed for magnetic orientation, physical and thermal properties, and mineralogy. Field and laboratory estimates of hydraulic conductivity are presented for most multiple-well monitoring sites. Periodic water-level measurements are also reported. Water-quality information for major ions, nutrients, trace elements, deuterium and oxygen-18, and tritium is presented for the multiple-well monitoring locations, and for selected existing production and observation wells. In addition, boron-11, carbon-13, carbon-14, sulfur-34, and strontium-87/86 data are presented for selected wells.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/wri/1987/4013/report.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/wri/1987/4013/report.pdf"><span>Potential for pollution of the Upper Floridan aquifer from five sinkholes and an internally drained <span class="hlt">basin</span> in <span class="hlt">west</span>-central Florida</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Trommer, J.T.</p> <p>1987-01-01</p> <p>Sinkholes are natural and common geologic features in <span class="hlt">west</span>-central Florida, which is underlain by water soluble limestone deposits. Dissolution of these deposits is the fundamental cause of sinkhole development. Sinkholes and other karst features are more pronounced in the northern part of the study area, but sinkhole activity has occurred throughout the area. Fifty-eight sinkholes with known or suspected connection to the Upper Floridan aquifer are located in the study area. An internally drained <span class="hlt">basin</span> near the city of Brandon and five sinkholes in Hillsborough, Pasco, and Hernando Counties were selected for detailed investigation. At all sites, chemical or biological constituents were detected that indicate pollutants had entered the aquifer. A generalized classification, based on the potential to pollute, was applied to the selected sites. Four of the sites have high potential and two have moderate potential to pollute the Upper Floridan aquifer. All of the sites investigated are capable of recharging large volumes of water to the Upper Floridan aquifer in short periods of time. Continued monitoring of the quality of water entering the sinkholes and of wells downgradient to the sinks is needed to assess the future impacts on the aquifer. (Author 's abstract)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2016JAESc.127...47J','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2016JAESc.127...47J"><span>Joint development and tectonic stress field evolution in the southeastern Mesozoic Ordos <span class="hlt">Basin</span>, <span class="hlt">west</span> part of North China</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Jiang, Lin; Qiu, Zhen; Wang, Qingchen; Guo, Yusen; Wu, Chaofan; Wu, Zhijie; Xue, Zhenhua</p> <p>2016-09-01</p> <p>Major joint sets trending E-W (J1), ENE-WSW (J2), NE-SW (J3), N-S (J4), NNW-SSE (J5), NNE-SSW (J6), NW-SE (J7), and WNW-ESE (J8) respectively are recognized in Mesozoic strata within the southeast of Ordos <span class="hlt">Basin</span>. Among them, the J1, J2 and J3 joint sets are systematic joints, while the other five joint sets (J4, J5, J6, J7, J8) are nonsystematic joints. There are three groups of orthogonal joint systems (i.e. J1 and J4 sets, J2 and J5 sets, and J6 and J8 sets) and two groups of conjugate shear fractures (ENE-WSW and NNE-SSW, ENE-WSW and ESE-WNW) in the study area. Joint spacing analysis indicates that: (1) layer thickness has an effect on the joint spacing, but the correlation of joint spacing and layer thickness is low; (2) joint density of systematic joints is greater than nonsystematic joints, and the joint density of a thin layer is also greater than that of a thick layer; and (3) the joints of Mesozoic strata in the <span class="hlt">basin</span> are the result of tectonic events affected by multiple stress fields. All these joints in the Mesozoic strata are formed in the two main tectonic events since Late Mesozoic times. One is the westward subduction of the Pacific Plate beneath the Eurasia Plate, which formed the approximately E-W-trending compressive stress field in the China continent. The trends of the J1 joint set (E-W) and the bisector of conjugate shear fractures composed of ENE-WSW and ESE-WNW fractures are all parallel to the trend of maximum compressive stress (E-W). The other stress field is related to the collision of the Indian and Eurasian Plates, which formed the NE-SW-trending compressive stress field in the China continent. The trends of the J3 joint set and bisector of conjugate shear fractures composed of ENE-WSW and NNE-SSW fractures are all parallel to the trend of maximum compressive stress (NE-SW). Finally, we conclude that the J1 and J4 sets are formed in the E-W-trending compressive stress field, and the J2, J3, J5, J6, J7 and J8 sets are formed in the NE</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2012ECSS..106....1K','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2012ECSS..106....1K"><span>Depositional dynamics in a river diversion receiving <span class="hlt">basin</span>: The case of the <span class="hlt">West</span> Bay Mississippi River Diversion</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Kolker, Alexander S.; Miner, Michael D.; Weathers, H. Dallon</p> <p>2012-06-01</p> <p>River deltas are a globally distributed class of sedimentary environment that are highly productive, ecologically diverse and serve as centers for population and commerce. Many deltas are also in a state of environmental degradation, and the Mississippi River Delta (MRD) stands out as a particularly iconic example. Plans to restore the MRD call for partially diverting the Mississippi River, which should reinitiate natural deltaic land-building processes. While the basic physical underpinnings of river diversions are relatively straightforward, there exists a considerable controversy over whether diversions can and do deliver enough sediment to the coastal zone to build sub-aerial land on restoration-dependent time scales. This controversy was addressed through a study of crevasse-splay dynamics at the <span class="hlt">West</span> Bay Mississippi River Diversion, the largest diversion in the MRD that was specifically constructed for coastal restoration. We found that most sediments were distributed over a 13.5 km area, with the maximum deposition occurring at the seaward end of this field. These results indicate substantial sediment deposition downstream of project boundaries and run counter to simple sedimentary models, which predict that maximum sediment deposition should occur closest to the riverbank. Despite this, most sediments appear to be retained in the nearshore zone, suggesting that the sediment retention efficiency was at the higher end of the 30-70% range suggested by some sediment budgets.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2016JESS..125..129S','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2016JESS..125..129S"><span>Geochemical evolution of groundwater in southern Bengal <span class="hlt">Basin</span>: The example of Rajarhat and adjoining areas, <span class="hlt">West</span> Bengal, India</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Sahu, Paulami; Sikdar, P. K.; Chakraborty, Surajit</p> <p>2016-02-01</p> <p>Detailed geochemical analysis of groundwater beneath 1223 km2 area in southern Bengal <span class="hlt">Basin</span> along with statistical analysis on the chemical data was attempted, to develop a better understanding of the geochemical processes that control the groundwater evolution in the deltaic aquifer of the region. Groundwater is categorized into three types: `excellent', `good' and `poor' and seven hydrochemical facies are assigned to three broad types: `fresh', `mixed' and `brackish' waters. The `fresh' water type dominated with sodium indicates active flushing of the aquifer, whereas chloride-rich `brackish' groundwater represents freshening of modified connate water. The `mixed' type groundwater has possibly evolved due to hydraulic mixing of `fresh' and `brackish' waters. Enrichment of major ions in groundwater is due to weathering of feldspathic and ferro-magnesian minerals by percolating water. The groundwater of Rajarhat New Town (RNT) and adjacent areas in the north and southeast is contaminated with arsenic. Current-pumping may induce more arsenic to flow into the aquifers of RNT and Kolkata cities. Future large-scale pumping of groundwater beneath RNT can modify the hydrological system, which may transport arsenic and low quality water from adjacent aquifers to presently unpolluted aquifer.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/896542','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/896542"><span>Geologic Controls of Hydrocarbon Occurrence in the Southern Appalachian <span class="hlt">Basin</span> in Eastern Tennessee, Southwestern Virginia, Eastern Kentucky, and Southern <span class="hlt">West</span> Virginia</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Robert D. Hatcher</p> <p>2003-05-31</p> <p>This report summarizes the first-year accomplishments of a three-year program to investigate the geologic controls of hydrocarbon occurrence in the southern Appalachian <span class="hlt">basin</span> in eastern Tennessee, southwestern Virginia, eastern Kentucky, and southern <span class="hlt">West</span> Virginia. The project: (1) employs the petroleum system approach to understand the geologic controls of hydrocarbons; (2) attempts to characterize the T-P parameters driving petroleum evolution; (3) attempts to obtain more quantitative definitions of reservoir architecture and identify new traps; (4) is working with USGS and industry partners to develop new play concepts and geophysical log standards for subsurface correlation; and (5) is geochemically characterizing the hydrocarbons (cooperatively with USGS). First-year results include: (1) meeting specific milestones (determination of thrust movement vectors, fracture analysis, and communicating results at professional meetings and through publication). All milestones were met. Movement vectors for Valley and Ridge thrusts were confirmed to be <span class="hlt">west</span>-directed and derived from pushing by the Blue Ridge thrust sheet, and fan about the Tennessee salient. Fracture systems developed during Paleozoic, Mesozoic, and Cenozoic to Holocene compressional and extensional tectonic events, and are more intense near faults. Presentations of first-year results were made at the Tennessee Oil and Gas Association meeting (invited) in June, 2003, at a workshop in August 2003 on geophysical logs in Ordovician rocks, and at the Eastern Section AAPG meeting in September 2003. Papers on thrust tectonics and a major prospect discovered during the first year are in press in an AAPG Memoir and published in the July 28, 2003, issue of the Oil and Gas Journal. (2) collaboration with industry and USGS partners. Several Middle Ordovician black shale samples were sent to USGS for organic carbon analysis. Mississippian and Middle Ordovician rock samples were collected by John Repetski (USGS) and</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2001AGUFM.S11A0536S','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2001AGUFM.S11A0536S"><span>Late Quaternary Uplift Rates and Geomorphology of the Santa Fe Springs and <span class="hlt">West</span> Coyote Folds, Los Angeles <span class="hlt">Basin</span>, California</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Sundermann, S. T.; Mueller, K. J.</p> <p>2001-12-01</p> <p>We mapped Quaternary aquifers with water wells and 5 m DEM's from IFSAR to define rates of folding along the Puente Hills blind thrust system. A cross section across Santa Fe Springs along Carfax Ave suggests 100 and 165 m of uplift of the 330 ka Gage and 650 ka Lynwood aquifers, yielding uplift rates of 0.2 mm/yr between 330-650 ka and 0.27 mm/yr beween 0-330 ka. For a 27° thrust, this yields a slip rate of 0.44 - 0.59 mm/yr. Surface folding is discernable across the Santa Fe Springs segment in the DEM, to a point 4 km <span class="hlt">west</span> of the San Gabriel River. Aquifers correlated with reflectors in a USGS seismic profile along Carfax suggests lower relief for the Lynwood (85 m) and the Gage (59 m). We suggest the 1 km-long USGS profile images only part of the fold limb and that additional structural relief is accommodated further north, as defined by our subsurface mapping. Correlation of a shallow reflector in the seismic profile with the 15-20 ka Gaspur aquifer suggests Holocene uplift of 1.0 mm/yr. A similar analysis undertaken for the Coyote fold near Trojan Ave. suggests 85 and 229 m of uplift for the Gage and Lynwood, yielding uplift rates of 0.26 mm/yr between 0-330 ka and 0.45 mm/yr between 330-650 ka. Correlation of the Gage with a reflector on another USGS seismic profile along Trojan suggests equivalent uplift (86 m), indicating the profile images the entire width of the Coyote forelimb at this site.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2005SedG..177..271N','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2005SedG..177..271N"><span>Cenomanian Turonian organic sedimentation in North-<span class="hlt">West</span> Africa: A comparison between the Tarfaya (Morocco) and Senegal <span class="hlt">Basins</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Nzoussi-Mbassani, P.; Khamli, N.; Disnar, J. R.; Laggoun-Défarge, F.; Boussafir, M.</p> <p>2005-06-01</p> <p>The Cenomanian-Turonian Oceanic Anoxic Event was recognised in North Western Africa in various depositional settings from abyssal areas to continental shelves. To derive information on environmental conditions in these different settings and define a depositional model, a petrographical and geochemical study of the organic matter was performed on sediments from the Tarfaya (Morocco) and Senegal <span class="hlt">Basins</span>. The results obtained for these two locations were compared to those of previous studies, namely from DSDP wells. Petrographic and geochemical data allow the differentiation of two main organofacies: a shallow depositional facies (continental shelf) is characterised by low total organic carbon (TOC) contents (< 4%). As attested by low hydrogen index (HI) values (100 to 400 mg HC/g TOC), the organic matter (OM) is moderately preserved. Petrographically, this facies is composed of mixed OM with high proportions of reworked vitrinite indicating detrital material influence. The depositional environment is typical of dysoxic conditions (S/C < 0.36) exposed to high mineral inputs and oxygenated water currents. The second organofacies deposited in the deep marine environment (slope and abyssal) shows a high TOC content (> 7%). The predominance of fluorescing amorphous OM combined with high HI values suggests good preservation conditions. The S/C ratio (> 0.36) and abundance of organic-sulphur compounds support this interpretation and indicate a development of anoxic conditions. To explain the organic contrast between both environments a depositional model has been developed which is based on limited water exchange between both depositional settings. The main factor which has determined black shale sedimentation is the restricted water circulation related to the presence of isolated depositional environment during Atlantic Ocean opening. Compared to present upwelling zones, the palaeoproductivity in the studied area was relatively moderate during Cenomanian-Turonian and seems</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/7079128','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/7079128"><span>Calcitization and silicification of evaporites in Guadalupian back-reef carbonates of the Delaware <span class="hlt">basin</span>, <span class="hlt">west</span> Texas and New Mexico</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Ulmer, D.S.; Scholle, P.A. )</p> <p>1991-03-01</p> <p>Outcrop of the Seven Rivers, Yates, and Tansill formations contain numerous examples of evaporites that have been replaced by both quartz and calcite. The original evaporites consisted of discrete horizons, scattered nodules, enterolithic layers, and individual crystal laths of gypsum and/or anhydrite within a predominantly dolomitic matrix. Based on field and petrographic observations, evaporite replacement proceeded from the exterior to the interior of the nodules. The earliest replacement was by euhedral, black megaquartz containing abundant hydrocarbon inclusions. Calcite replacement followed silicification and consists of coarse, equant, blocky spar. Isotopic analyses of these calcites form two distinct groups: the first group ranges from -10.9 to -20.1{per thousand} (average -16.4{per thousand}) {delta}{sup 13}C and -6.4 to -13.8{per thousand} (average -10.9{per thousand}) {delta}{sup 18}O; the second group ranges from +1.4 to 5.8{per thousand} (average -2.4{per thousand}) {delta}{sup 13}C and -6.2 to 14.1{per thousand} (average -9.2{per thousand}) {delta}{sup 18}O. Evaporite silicification was coeval with hydrocarbon migration as indicated by the inclusion data. Calcitization, however, was associated with mid-Tertiary block faulting that uplifted the area causing deep groundwater circulation. The isotopically very light calcites resulted from the mixing of meteoric fluids and hydrocarbon-rich pore fluids, probably during early uplift while these strata were still at significant depth. The calcites with heavier isotopic values were produced somewhat later by meteoric fluids that had little or no contact with hydrocarbons. Evaporite diagenesis in the Delaware <span class="hlt">basin</span> is an ongoing process that started during hydrocarbon migration, continued over millions of years, and has the potential to significantly change the porosity of these units.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2008PhDT........74K','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2008PhDT........74K"><span>An integrated geological and geophysical study of the Uinta Mountains, Utah, Colorado and a geophysical study on Tamarix in the Rio Grande River <span class="hlt">basin</span>, <span class="hlt">West</span> Texas</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Khatun, Salma</p> <p>2008-07-01</p> <p>This research consists of two parts. One part deals with an integrated analysis of the structural anomaly associated with the Uinta Mountains, Utah. The other part deals with a study on the effect of Tamarix on soil and water quality. The Uinta Mountains are an anomalous east-<span class="hlt">west</span> trending range of the Central Rocky Mountains and are located in northeastern Utah and northwestern Colorado. They have long been recognized as a structural anomaly that is surrounded by other Laramide structures that trend N-S or northwest. The study area extends from -112 to -108 degrees longitude and 41.5 to 39 degrees latitude and consists of three major geologic features: The Green River <span class="hlt">basin</span>, Uinta Mountains, and the Uinta <span class="hlt">basin</span>. This study investigates the tectonic evolution and the structural development of the Uinta aulacogen. There is a growing interest in exploration for petroleum and other hydrocarbons in the area of this study. Oil companies have been drilling wells in this area since the 1950's. The results of this study will enhance the existing knowledge of this region, and thus will help in the pursuit of hydrocarbons. A highly integrated approach was followed for this investigation. Gravity, magnetic, drill hole, seismic and receiver function data were used in the analysis. Gravity and magnetic data were analyzed using software tools available in the Department of Geological Sciences such as Oasis Montaj and GIS. Filtered gravity maps show that the Uinta Mountains and the surrounding <span class="hlt">basins</span> and uplifts are deep seated features. These maps also reveal a correlation between the Uinta Mountains and the regional tectonic structures. This correlation helps in understanding how the different tectonic events that this region went through contributed to the different phases of development of the Uinta aulacogen. Four gravity models were generated along four north-south trending profile lines covering the target area from east to <span class="hlt">west</span>. Interpretations of these models give a</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/sir/2012/5140/SIR12-5140.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/sir/2012/5140/SIR12-5140.pdf"><span>Demonstration optimization analyses of pumping from selected Arapahoe aquifer municipal wells in the <span class="hlt">west</span>-central Denver <span class="hlt">Basin</span>, Colorado, 2010–2109</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Banta, Edward R.; Paschke, Suzanne S.</p> <p>2012-01-01</p> <p>Declining water levels caused by withdrawals of water from wells in the <span class="hlt">west</span>-central part of the Denver <span class="hlt">Basin</span> bedrock-aquifer system have raised concerns with respect to the ability of the aquifer system to sustain production. The Arapahoe aquifer in particular is heavily used in this area. Two optimization analyses were conducted to demonstrate approaches that could be used to evaluate possible future pumping scenarios intended to prolong the productivity of the aquifer and to delay excessive loss of saturated thickness. These analyses were designed as demonstrations only, and were not intended as a comprehensive optimization study. Optimization analyses were based on a groundwater-flow model of the Denver <span class="hlt">Basin</span> developed as part of a recently published U.S. Geological Survey groundwater-availability study. For each analysis an optimization problem was set up to maximize total withdrawal rate, subject to withdrawal-rate and hydraulic-head constraints, for 119 selected municipal water-supply wells located in 96 model cells. The optimization analyses were based on 50- and 100-year simulations of groundwater withdrawals. The optimized total withdrawal rate for all selected wells for a 50-year simulation time was about 58.8 cubic feet per second. For an analysis in which the simulation time and head-constraint time were extended to 100 years, the optimized total withdrawal rate for all selected wells was about 53.0 cubic feet per second, demonstrating that a reduction in withdrawal rate of about 10 percent may extend the time before the hydraulic-head constraints are violated by 50 years, provided that pumping rates are optimally distributed. Analysis of simulation results showed that initially, the pumping produces water primarily by release of water from storage in the Arapahoe aquifer. However, because confining layers between the Denver and Arapahoe aquifers are thin, in less than 5 years, most of the water removed by managed-flows pumping likely would be supplied</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2009AGUFM.V43I..02C','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2009AGUFM.V43I..02C"><span>Products of Submarine Fountains and Bubble-burst Eruptive Activity at 1200 m on <span class="hlt">West</span> Mata Volcano, Lau <span class="hlt">Basin</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Clague, D. A.; Rubin, K. H.; Keller, N. S.</p> <p>2009-12-01</p> <p>An eruption was observed and sampled at <span class="hlt">West</span> Mata Volcano using ROV JASON II for 5 days in May 2009 during the NSF-NOAA eruption response cruise to this region of suspected volcanic activity. Activity was focused near the summit at the Prometheus and Hades vents. Prometheus erupted almost exclusively as low-level fountains. Activity at Hades cycled between vigorous degassing, low fountains, and bubble-bursts, building up and partially collapsing a small spatter/scoria cone and feeding short sheet-like and pillow flows. Fire fountains at Prometheus produced mostly small primary pyroclasts that include Pele's hair and fluidal fragments of highly vesicular volcanic glass. These fragments have mostly shattered and broken surfaces, although smooth spatter-like surfaces also occur. As activity wanes, glow in the vent fades, and denser, sometimes altered volcanic clasts are incorporated into the eruption. The latter are likely from the conduit walls and/or vent-rim ejecta, drawn back into the vent by inrushing seawater that replaces water entrained in the rising volcanic plume. Repeated recycling of previously erupted materials eventually produces rounded clasts resembling beach cobbles and pitted surfaces on broken phenocrysts of pyroxene and olivine. We estimate that roughly 33% of near vent ejecta are recycled. Our best sample of this ejecta type was deposited in the drawer of the JASON II ROV during a particularly large explosion that occurred during plume sampling immediately above the vent. Elemental sulfur spherules up to 5 mm in diameter are common in ejecta from both vents and occur inside some of the lava fragments Hades activity included dramatic bubble-bursts unlike anything previously observed under water. The lava bubbles, sometimes occurring in rapid-fire sequence, collapsed in the water-column, producing fragments that are quenched in less than a second to form Pele's hair, limu o Pele, spatter-like lava blobs, and scoria. All are highly vesicular</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_11");'>11</a></li> <li><a href="#" onclick='return showDiv("page_12");'>12</a></li> <li class="active"><span>13</span></li> <li><a href="#" onclick='return showDiv("page_14");'>14</a></li> <li><a href="#" onclick='return showDiv("page_15");'>15</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_13 --> <div id="page_14" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_12");'>12</a></li> <li><a href="#" onclick='return showDiv("page_13");'>13</a></li> <li class="active"><span>14</span></li> <li><a href="#" onclick='return showDiv("page_15");'>15</a></li> <li><a href="#" onclick='return showDiv("page_16");'>16</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="261"> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/wri/1991/4164/report.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/wri/1991/4164/report.pdf"><span>Hydrologic conditions in the Jacobs Creek, Stony Brook, and Beden Brook drainage <span class="hlt">basins</span>, <span class="hlt">west</span>-central New Jersey, 1986-88</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Jacobsen, Eric; Hardy, M.A.; Kurtz, B.A.</p> <p>1993-01-01</p> <p>Data on the quantity and quality of groundwater and surface water in the drainage <span class="hlt">basins</span> of Jacobs Creek, Stony Brook, and Beden Brook upstream from U.S. Route 206 in <span class="hlt">west</span>-central New Jersey were collected from October 1, 1986, through September 30, 1988. Water levels measured in 74 wells ranged from 49 to 453 ft above sea level. The water-table surface generally mimicked topography; however, the water-level altitude in one well indicates the possibility of local interbasin groundwater flow. Calcium and bicarbonate were the most abundant cation and anion in most of the 25 groundwater samples. With one exception, concentrations of nutrients, trace elements, organic carbon, and volatile organic compounds in groundwater samples were less than U.S. Environmental Protection Agency primary drinking-water regulations. Stream low-flow measurements made twice at each of 63 sites indicate that both discharge and runoff increased downstream for most reaches of Jacobs Creek, Stony Brook, and Beden Brook. For main-stem sites, the highest base-flow runoff occurred at site 01462733 on Jacobs Creek; the greatest discharge was measured at site 01401100 on Stony Brook. The flow-duration curve for Stony Brook for 1987-88 indicates a wetter- than-normal period for the area. Results of surface-water-quality analyses indicate that calcium and sodium plus potassium were the dominant or codominant cations, and bicarbonate and chloride were the dominant or codominant anions in most samples. Concentrations of nutrients typically exceeded those needed to support surplus algal growth. Concentrations of trace elements generally were less than U.S. Environmental Protection Agency primary drinking-water regulations. Bottom-sediment samples contained several persistent organic compounds. Significant downstream variations were found in concentrations of copper and lead in Jacobs Creek and Stony Brook. Results of macroinvertebrate community sampling indicate an input of nutrients to several stream</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/25734617','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/25734617"><span>Isolation of an arsenate-respiring bacterium from a redox front in an arsenic-polluted aquifer in <span class="hlt">West</span> Bengal, Bengal <span class="hlt">Basin</span>.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Osborne, Thomas H; McArthur, John M; Sikdar, Pradip K; Santini, Joanne M</p> <p>2015-04-07</p> <p>Natural pollution of groundwater by arsenic adversely affects the health of tens of millions of people worldwide, with the deltaic aquifers of SE Asia being particularly polluted. The pollution is caused primarily by, or as a side reaction of, the microbial reduction of sedimentary Fe(III)-oxyhydroxides, but the organism(s) responsible for As release have not been isolated. Here we report the first isolation of a dissimilatory arsenate reducer from sediments of the Bengal <span class="hlt">Basin</span> in <span class="hlt">West</span> Bengal. The bacterium, here designated WB3, respires soluble arsenate and couples its reduction to the oxidation of acetate; WB3 is therefore implicated in the process of arsenic pollution of groundwater, which is largely by arsenite. The bacterium WB3 is also capable of reducing dissolved Fe(III) citrate, solid Fe(III)-oxyhydroxide, and elemental sulfur, using acetate as the electron donor. It is a member of the Desulfuromonas genus and possesses a dissimilatory arsenate reductase that was identified using degenerate polymerase chain reaction primers. The sediment from which WB3 was isolated was brown, Pleistocene sand at a depth of 35.2 m below ground level (mbgl). This level was some 3 cm below the boundary between the brown sands and overlying reduced, gray, Holocene aquifer sands. The color boundary is interpreted to be a reduction front that releases As for resorption downflow, yielding a high load of labile As sorbed to the sediment at a depth of 35.8 mbgl and concentrations of As in groundwater that reach >1000 μg/L.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/pp/1708/f2/pdf/pp1708_f2.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/pp/1708/f2/pdf/pp1708_f2.pdf"><span>Thermal maturity patterns in Pennsylvanian coal-bearing rocks in Alabama, Tennessee, Kentucky, Virginia, <span class="hlt">West</span> Virginia, Ohio, Maryland, and Pennsylvania: Chapter F.2 in Coal and petroleum resources in the Appalachian <span class="hlt">basin</span>: distribution, geologic framework, and geochemical character</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Ruppert, Leslie F.; Trippi, Michael H.; Hower, James C.; Grady, William C.; Levine, Jeffrey R.; Ruppert, Leslie F.; Ryder, Robert T.</p> <p>2014-01-01</p> <p>Thermal maturation patterns of Pennsylvanian strata in the Appalachian <span class="hlt">basin</span> and part of the Black Warrior <span class="hlt">basin</span> were determined by compiling previously published and unpublished percent-vitrinite-reflectance (%R0) measurements and preparing isograd maps on the basis of the measurements. The isograd values range from 0.6 %R0 in Ohio and the western side of the Eastern Kentucky coal field to 5.5 %R0 in the Southern field in the Pennsylvania Anthracite region, Schuylkill County, Pa. The vitrinite-reflectance values correspond to the American Society of Testing Materials (ASTM) coal-rank classes of high-volatile C bituminous to meta-anthracite, respectively. In general, the isograds show that thermal maturity patterns of Pennsylvanian coals within the Appalachian <span class="hlt">basin</span> generally decrease from east to <span class="hlt">west</span>. In the Black Warrior <span class="hlt">basin</span> of Alabama, the isograds show a circular pattern with the highest values (greater than 1.6 %R0) centered in Jefferson County, Ala. Most of the observed patterns can be explained by variations in the depth of burial, variations in geothermal gradient, or a combination of both; however, there are at least four areas of higher ranking coal in the Appalachian <span class="hlt">basin</span> that are difficult to explain by these two processes alone: (1) a set of <span class="hlt">west</span>- to northwest-trending salients centered in Somerset, Cambria, and Fayette Counties, Pa.; (2) an elliptically shaped, northeast-trending area centered in southern <span class="hlt">West</span> Virginia and western Virginia; (3) the Pennsylvania Anthracite region in eastern Pennsylvania; and (4) the eastern part of the Black Warrior coal field in Alabama. The areas of high-ranking coal in southwestern Pennsylvania, the Black Warrior coal field, and the Pennsylvania Anthracite region are interpreted here to represent areas of higher paleo-heat flow related to syntectonic movement of hot fluids towards the foreland associated with Alleghanian deformation. In addition to the higher heat flow from these fluids, the Pennsylvania</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/sir/2011/5066/','USGSPUBS'); return false;" href="https://pubs.usgs.gov/sir/2011/5066/"><span>Precipitation and runoff simulations of select perennial and ephemeral watersheds in the middle Carson River <span class="hlt">basin</span>, Eagle, Dayton, and Churchill Valleys, <span class="hlt">west</span>-central Nevada</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Jeton, Anne E.; Maurer, Douglas K.</p> <p>2011-01-01</p> <p>The effect that land use may have on streamflow in the Carson River, and ultimately its impact on downstream users can be evaluated by simulating precipitation-runoff processes and estimating groundwater inflow in the middle Carson River in <span class="hlt">west</span>-central Nevada. To address these concerns, the U.S. Geological Survey, in cooperation with the Bureau of Reclamation, began a study in 2008 to evaluate groundwater flow in the Carson River <span class="hlt">basin</span> extending from Eagle Valley to Churchill Valley, called the middle Carson River <span class="hlt">basin</span> in this report. This report documents the development and calibration of 12 watershed models and presents model results and the estimated mean annual water budgets for the modeled watersheds. This part of the larger middle Carson River study will provide estimates of runoff tributary to the Carson River and the potential for groundwater inflow (defined here as that component of recharge derived from percolation of excess water from the soil zone to the groundwater reservoir). The model used for the study was the U.S. Geological Survey's Precipitation-Runoff Modeling System, a physically based, distributed-parameter model designed to simulate precipitation and snowmelt runoff as well as snowpack accumulation and snowmelt processes. Models were developed for 2 perennial watersheds in Eagle Valley having gaged daily mean runoff, Ash Canyon Creek and Clear Creek, and for 10 ephemeral watersheds in the Dayton Valley and Churchill Valley hydrologic areas. Model calibration was constrained by daily mean runoff for the 2 perennial watersheds and for the 10 ephemeral watersheds by limited indirect runoff estimates and by mean annual runoff estimates derived from empirical methods. The models were further constrained by limited climate data adjusted for altitude differences using annual precipitation volumes estimated in a previous study. The calibration periods were water years 1980-2007 for Ash Canyon Creek, and water years 1991-2007 for Clear Creek. To</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2001AGUFM.V42F..05R','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2001AGUFM.V42F..05R"><span>New 40Ar-39Ar ages for Basalts From the <span class="hlt">West</span> Siberian <span class="hlt">Basin</span> and Links With the Siberian Flood Basalt Province</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Reichow, M. K.; Saunders, A. D.; White, R. V.; Pringle, M. S.; Al'Mukhamedov, A. I.; Medvedev, A. Y.</p> <p>2001-12-01</p> <p>The Siberian Traps represent the world's largest subaerial flood basalt province, and may be responsible for the Permo-Triassic mass extinction at 250 Ma (e.g., Campbell et al. 1992 Science 258, 1760). The total extent of the Traps, and whether or not the volcanism is a contributor to the Permo-Triassic mass extinction, are both still matters of debate. Basaltic and gabbroic rocks occur throughout the <span class="hlt">West</span> Siberian <span class="hlt">Basin</span> (WSB), but are covered by a thick succession of Mesozoic and Cenozoic sediments, unlike the more accessible Traps on the Siberian craton to the east. We have obtained material from three deep industrial boreholes (Hohryakovskaya, Permyakovskaya, Van Eganskaya), and show that basalts and gabbros from the WSB have ages indistinguishable from the Traps to the east. 40Ar-39Ar dating of plagioclase (from basalts) and phlogopite (from a gabbro) separates from 6 samples from three boreholes give ages of 249.3 to 250.5 Ma (plagioclase) and 253.4 Ma (phlogopite) (relative to GA1550 biotite at 98.79 Ma). The results are obtained by step heating and the apparent plateau ages include more than 90 percent of the total argon released. Two sigma errors are better than 1.0 Ma for 5 of the samples. Normalised to the same standard, these ages are in good agreement with ages obtained for the Siberian Traps (250 Ma: Renne and Basu 1991 Science 253, 176). On the basis of major and trace element data, the basalts from the WSB show affinities with the Nadezhinsky suite (Noril'sk area), which is known to immediately precede the main pulse of volcanism that extruded over large areas of the craton. Limited recovery from the boreholes indicates that the basalts were erupted subaerially or possibly into shallow water (e.g. presence of abundant, large amygdales). Lava flows are at least 20 m thick, indicating voluminous eruptions. The results from the Ar-Ar dating and chemical analysis emphasise a clear correlation between basalts from the WSB and the Siberian Traps. This</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/5933377','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/5933377"><span>Lithospheric flexure and composite tectonic loads in the foreland of the Marathon orogenic belt: Permian <span class="hlt">Basin</span>, <span class="hlt">west</span> Texas and southern New Mexico</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Yang, Kenn Ming; Dorobek, S. . Dept. of Geology)</p> <p>1992-01-01</p> <p>Lithospheric flexure caused by loading of orogenic belts is regarded as the main process that produces subsidence in foreland <span class="hlt">basins</span>. However in some foreland areas, subsidence may be affected by synorogenic foreland uplifts that act as additional loads. The Permian <span class="hlt">Basin</span> is located in the foreland area of the late Paleozoic Marathon orogenic belt (Mob). The Permian <span class="hlt">Basin</span> consists of several sub-<span class="hlt">basins</span> that are separated by several structurally complex uplifts. Uplift of the Central <span class="hlt">Basin</span> Platform (CBP) and subsidence in adjacent <span class="hlt">basins</span> were coeval with final stages of deformation in the Marathon orogen. The CBP is oriented at high angles to the Marathon orogen and consists of several blocks arranged in an en echelon pattern. Data suggest that uplift of the CBP was affected by clockwise rotation of crustal blocks between NNW-SSE trending boundary faults. Although both the Delaware <span class="hlt">Basin</span> (DB) and Val Verde <span class="hlt">Basin</span> (VVB) are adjacent to the Mob, the synorogenic geometries of these <span class="hlt">basins</span> are different. The VVB has a typical flexural profile that apparently is due to loading of the Marathon orogen. However, the flexural profile becomes narrower and deeper toward the western end of the VVB where the <span class="hlt">basin</span> is bordered by the southernmost block of the CBP. In contrast, synorogenic DB profiles have composite wavelengths which show maximum deflection next to the Mob and toward the uplifted blocks of the CBP. This suggests that synorogenic subsidence of the DB was affected by loading of the CBP. In addition, the loading geometry across the uplifted CBP is asymmetric, with greater uplift and basement shortening on the western side of the CBP and less uplift and basement shortening on the eastern side. This may explain greater synorogenic subsidence in the DB than the Midland <span class="hlt">Basin</span>.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/wri/1984/4313/report.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/wri/1984/4313/report.pdf"><span>Hydrologic analysis of two headwater lake <span class="hlt">basins</span> of differing lake pH in the <span class="hlt">west</span>-central Adirondack Mountains of New York</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Murdoch, Peter S.; Peters, N.E.; Newton, R.M.</p> <p>1987-01-01</p> <p>Hydrologic analysis of two headwater lake <span class="hlt">basins</span> in the Adirondack Mountains, New York, during 1980-81 indicates that the degree of neutralization of acid precipitation is controlled by the groundwater contribution to the lake. According to flow-duration analyses, daily mean outflow/unit area from the neutral lake (Panther Lake, pH 5-7) was more sustained and contained a higher percentage of groundwater than that of the acidic lake (Woods Lake, pH 4-5). Outflow recession rates and maximum base-flow rates, derived from individual recession curves, were 3.9 times and 1.5 times greater, respectively, in the neutral-lake <span class="hlt">basin</span> than in the acidic-lake <span class="hlt">basin</span>. Groundwater contribution to lake outflow was also calculated from a lake-water budget; the groundwater contribution to the neutral lake was about 10 times greater than that to the acidic lake. Thick sandy till forms the groundwater reservoir and the major recharge area in both <span class="hlt">basins</span> but covers 8.5 times more area in the neutral-lake <span class="hlt">basin</span> than in the acidic-lake <span class="hlt">basin</span>. More groundwater storage within the neutral <span class="hlt">basin</span> provides longer contact time with neutralizing minerals and more groundwater discharge. As a result, the neutral lake has relatively high pH and alkalinity, and more net cation transport. (USGS)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2014AGUFM.T53A4652C','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2014AGUFM.T53A4652C"><span>Examination of Global Seismic Tomography Images and Sea-Surface Magnetic Field Anomaly Profiles in the <span class="hlt">West</span> Philippine <span class="hlt">Basin</span> for the Large Clockwise Rotation of the Philippine Sea Plate during the Last 55 Million Years</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Choe, H.; Lee, S. M.</p> <p>2014-12-01</p> <p>The Philippine Sea Plate is thought to have undergone a 90° clockwise rotation during the last 55 million years. However, evidences for such an argument are rather circumstantial. For instance, paleomagnetic measurements for the large rotation are derived largely from Halmahera, Indonesia which is quite close to the plate boundary. It is thus possible that this region may have undergone local deformation separate from the main parts of the Philippine Sea Plate. In this study, we examine the global seismic tomography images of the mantle beneath the Philippine Sea Plate and the marine magnetic field anomaly data at the sea surface from the <span class="hlt">West</span> Philippine <span class="hlt">Basin</span> to see whether they agree with the presumed motion of the Philippine Sea Plate. Our comparison between the plate reconstruction and global tomography suggests that the rotation of Philippine Sea Plate may not have been continuous but instead experienced a temporal break at around 32 Ma. The exact nature of this pause is uncertain, but it may be related to a sudden change in the configuration of subduction systems. A detail comparison with recent results from IODP Legs 350 and 351 is therefore necessary, including a search for a change in the depositional style of <span class="hlt">basin</span> sediment. We also examined the detailed the shape of magnetic anomalies (such as skewness) and compare them with the previous model by allowing the magnetization to have direction corresponding to that during the opening of the <span class="hlt">West</span> Philippine <span class="hlt">Basin</span>. At this moment, it is too early to tell if the sudden change at around 32 Ma or other inferred breaks can be seen in the magnetic profiles as well.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/6629969','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/6629969"><span>Geothermal investigations in <span class="hlt">West</span> Virginia</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Hendry, R.; Hilfiker, K.; Hodge, D.; Morgan, P.; Swanberg, C.; Shannon, S.S. Jr.</p> <p>1982-11-01</p> <p>Deep sedimentary <span class="hlt">basins</span> and warm-spring systems in <span class="hlt">West</span> Virginia are potential geothermal resources. A temperature gradient map based on 800 bottom-hole temperatures for <span class="hlt">West</span> Virginia shows that variations of temperature gradient trend northeasterly, parallel to regional structure. Highest temperature gradient values of about 28/sup 0/C/km occur in east-central <span class="hlt">West</span> Virginia, and the lowest gradients (18/sup 0/C/km) are found over the Rome Trough. Results from ground-water geochemistry indicate that the warm waters circulate in very shallow aquifers and are subject to seasonal temperature fluctuations. Silica heat-flow data in <span class="hlt">West</span> Virginia vary from about 0.89 to 1.4 HFU and generally increase towards the <span class="hlt">west</span>. Bouguer, magnetic, and temperature gradient profiles suggest that an ancient rift transects the state and is the site of several deep sedimentary <span class="hlt">basins</span>.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/sir/2010/5189/','USGSPUBS'); return false;" href="https://pubs.usgs.gov/sir/2010/5189/"><span>Effects of groundwater levels and headwater wetlands on streamflow in the Charlie Creek <span class="hlt">basin</span>, Peace River watershed, <span class="hlt">west</span>-central Florida</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Lee, T.M.; Sacks, L.A.; Hughes, J.D.</p> <p>2010-01-01</p> <p>The Charlie Creek <span class="hlt">basin</span> was studied from April 2004 to December 2005 to better understand how groundwater levels in the underlying aquifers and storage and overflow of water from headwater wetlands preserve the streamflows exiting this least-developed tributary <span class="hlt">basin</span> of the Peace River watershed. The hydrogeologic framework, physical characteristics, and streamflow were described and quantified for five subbasins of the 330-square mile Charlie Creek <span class="hlt">basin</span>, allowing the contribution of its headwaters area and tributary subbasins to be separately quantified. A MIKE SHE model simulation of the integrated surface-water and groundwater flow processes in the <span class="hlt">basin</span> was used to simulate daily streamflow observed over 21 months in 2004 and 2005 at five streamflow stations, and to quantify the monthly and annual water budgets for the five subbasins including the changing amount of water stored in wetlands. Groundwater heads were mapped in Zone 2 of the intermediate aquifer system and in the Upper Floridan aquifer, and were used to interpret the location of artesian head conditions in the Charlie Creek <span class="hlt">basin</span> and its relation to streamflow. Artesian conditions in the intermediate aquifer system induce upward groundwater flow into the surficial aquifer and help sustain base flow which supplies about two-thirds of the streamflow from the Charlie Creek <span class="hlt">basin</span>. Seepage measurements confirmed seepage inflow to Charlie Creek during the study period. The upper half of the <span class="hlt">basin</span>, comprised largely of the Upper Charlie Creek subbasin, has lower runoff potential than the lower <span class="hlt">basin</span>, more storage of runoff in wetlands, and periodically generates no streamflow. Artesian head conditions in the intermediate aquifer system were widespread in the upper half of the Charlie Creek <span class="hlt">basin</span>, preventing downward leakage from expansive areas of wetlands and enabling them to act as headwaters to Charlie Creek once their storage requirements were met. Currently, the dynamic balance between wetland</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/5865273','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/5865273"><span>Parana <span class="hlt">basin</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Zalan, P.V.; Wolff, S.; Conceicao, J.C.J.; Vieira, I.S.; Astolfi, M.A.; Appi, V.T.; Zanotto, O.; Neto, E.V.S.; Cerqueira, J.R.</p> <p>1987-05-01</p> <p>The Parana <span class="hlt">basin</span> is a large intracratonic <span class="hlt">basin</span> in South America, developed entirely on continental crust and filled with sedimentary and volcanic rocks ranging in age from Silurian to Cretaceous. It occupies the southern portion of Brazil (1,100,000 km/sup 2/ or 425,000 mi/sup 2/) and the eastern half of Paraguay (100,000 km/sup 2/ or 39,000 mi/sup 2/); its extension into Argentina and Uruguay is known as the Chaco-Parana <span class="hlt">basin</span>. Five major depositional sequences (Silurian, Devonian, Permo-Carboniferous, Triassic, Juro-Cretaceous) constitute the stratigraphic framework of the <span class="hlt">basin</span>. The first four are predominantly siliciclastic in nature, and the fifth contains the most voluminous basaltic lava flows of the planet. Maximum thicknesses are in the order of 6000 m (19,646 ft). The sequences are separated by <span class="hlt">basin</span> wide unconformities related in the Paleozoic to Andean orogenic events and in the Mesozoic to the continental breakup and sea floor spreading between South America and Africa. The structural framework of the Parana <span class="hlt">basin</span> consists of a remarkable pattern of criss-crossing linear features (faults, fault zones, arches) clustered into three major groups (N45/sup 0/-65/sup 0/W, N50/sup 0/-70/sup 0/E, E-W). The northwest- and northeast-trending faults are long-lived tectonic elements inherited from the Precambrian basement whose recurrent activity throughout the Phanerozoic strongly influenced sedimentation, facies distribution, and development of structures in the <span class="hlt">basin</span>. Thermomechanical analyses indicate three main phases of subsidence (Silurian-Devonian, late Carboniferous-Permian, Late Jurassic-Early Cretaceous) and low geothermal gradients until the beginning of the Late Jurassic Permian oil-prone source rocks attained maturation due to extra heat originated from Juro-Cretaceous igneous intrusions. The third phase of subsidence also coincided with strong tectonic reactivation and creation of a third structural trend (east-<span class="hlt">west</span>).</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2011AGUFM.T53D..03L','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2011AGUFM.T53D..03L"><span>First images of the crustal structure across the central Algerian margin, off Tipaza (<span class="hlt">West</span> Algiers) from deep penetrating seismic data: new information to constrain the opening of the Algerian <span class="hlt">basin</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Leprêtre, A.; Deverchere, J.; Klingelhoefer, F.; Graindorge, D.; Schnurle, P.; Yelles, K.; Bracene, R.</p> <p>2011-12-01</p> <p>The origin of the Algerian margin remains one of the key questions still unresolved in the Western Mediterranean sea. This is related to the unknown nature and kinematics of this Neogene <span class="hlt">basin</span>. Whereas the westernmost margin is generally assumed to have been shaped as a STEP-fault (Subduction-Transform Edge Propagator, transcurrent) margin by the westward displacement of the Alboran block, the central Algerian margin is believed to have involved a NW-SE <span class="hlt">basin</span> opening related to a southward slab rollback. This work sheds insight on this issue, using data acquired in the context of the Algerian-French program SPIRAL (Sismique Profonde et Investigation Régionale en Algérie): a cruise conducted on the 'R/V L'Atalante' in October-November 2009. It has provided 5 new combined onshore-offshore wide-angle seismic profiles and an extensive multi-channel seismic dataset spread along the margin, from Oran to Annaba. In this work, the available structural information on the ~N-S wide-angle transect of Tipaza is presented, where the margin broadens due to the presence of a bathymetric high (the Khayr-Al-Din bank) which is assumed to represent a remaining titled block of the passive margin. Along the transect, 39 OBS and 13 landstations recorded 751 low frequency airgun shots. Travel-time tomography and forward modelling were computed using the software developed by Zelt and Barton (1998) and Zelt and Smith (1992), to obtain the velocity structure in the region. A set of multi-channel seismic reflection profiles including two coincident profiles with the wide-angle data allows a combined interpretation and extend the deep structure in the Bou Ismail Bay. MCS data outline the sedimentary sequence filling the Algerian <span class="hlt">basin</span> depicting an intensive salt tectonic associated with the Messinan Salinity Crisis and allowing to image locally below the salt layer. The deep penetrating data SPIRAL allow to image the sedimentary sequence in the Algerian <span class="hlt">basin</span> off Tipaza (<span class="hlt">West</span> Algiers) and</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/1993Tecto..12.1267B','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/1993Tecto..12.1267B"><span>Interpretation of magnetic anomalies over the Grenada <span class="hlt">Basin</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Bird, Dale E.; Hall, Stuart A.; Casey, John F.; Millegan, Patrick S.</p> <p>1993-10-01</p> <p>The Grenada <span class="hlt">Basin</span> is a back arc <span class="hlt">basin</span> located near the eastern border of the Caribbean Plate. The <span class="hlt">basin</span> is bounded on the <span class="hlt">west</span> by the north-south trending Aves Ridge (a remnant island arc) and on the east by the active Lesser Antilles island arc. Although this physiography suggests that east-<span class="hlt">west</span> extension formed the <span class="hlt">basin</span>, magnetic anomalies over the <span class="hlt">basin</span> exhibit predominantly east-<span class="hlt">west</span> trends. If the observed magnetic anomalies over the <span class="hlt">basin</span> are produced by seafloor spreading, then the orientation of extension is complex. Extension in back arc <span class="hlt">basins</span> is roughly normal to the trench, although some <span class="hlt">basins</span> exhibit oblique extension. Present models for the formation of the Grenada <span class="hlt">Basin</span> vary from north-south extension through northeast-southwest extension to east-<span class="hlt">west</span> extension. An interpretation of magnetic anomalies over the Grenada <span class="hlt">Basin</span> supports <span class="hlt">basin</span> development by nearly east-<span class="hlt">west</span> extension. Low amplitude magnetic anomaly trends subparallel to the island arc magnetic anomaly trends over the southern part of the <span class="hlt">basin</span> and the results of forward three-dimensional (3-D) magnetic modeling are consistent with this conclusion. Late Cenozoic tectonic movements may have been responsible for disrupting the magnetic signature over the northern part of the <span class="hlt">basin</span>. On the basis of our 3-D analysis, we attribute the prominent east-<span class="hlt">west</span> trending anomalies of the Grenada <span class="hlt">Basin</span> to fracture zones formed during seafloor spreading at low latitude. This east-<span class="hlt">west</span> trend is not interpreted as indicating north-south extension of the <span class="hlt">basin</span>.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/643522','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/643522"><span>Geoscience/Engineering Characterization of the Interwell Environment in Carbonate Reservoirs Based on Outcrop Analogs, Permian <span class="hlt">Basin</span>, <span class="hlt">West</span> Texas and New Mexico.</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Lucia, F.J.; Kerans, C.</p> <p>1997-05-29</p> <p>The objective of this project is to investigate styles of reservoir heterogeneity found in low permeability pelleted wackestone/packstone facies and mixed carbonate/clastic facies found in Permian <span class="hlt">Basin</span> reservoirs by studying similar facies found in Permian <span class="hlt">Basin</span> reservoirs by studying similar facies exposed in the Guadalupe Mountains. Specific objectives for the outcrop study include construction of a stratigraphic framework, petrophysical quantification of the framework, and testing the outcrop reservoir model for effects of reservoir heterogeneity on production performance. Specific objectives for the subsurface study parallel objectives for the outcrop study.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/513505','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/513505"><span>Geoscience/engineering characterization of the interwell environment in carbonate reservoirs based on outcrop analogs, Permian <span class="hlt">Basin</span>, <span class="hlt">West</span> Texas and New Mexico - petrophysical characterization of the South Cowden Grayburg Reservoir, Ector County, Texas. Final report</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Lucia, F.J.</p> <p>1997-06-01</p> <p>Reservoir performance of the South Cowden Grayburg field suggests that only 21 percent of the original oil in place has been recovered. The purpose of this study is to construct a realistic reservoir model to be used to predict the location of the remaining mobile oil. Construction of reservoir models for fluid-flow simulation of carbonate reservoirs is difficult because they typically have complicated and unpredictable permeability patterns. Much of the difficulty results from the degree to which diagenetic overprinting masks depositional textures and patterns. For example, the task of constructing a reservoir model of a limestone reservoir that has undergone only cementation and compaction is easier than constructing a model of a karsted reservoir that has undergone cavern formation and collapse as well as cementation and compaction. The Permian-age carbonate-ramp reservoirs in the Permian <span class="hlt">Basin</span>, <span class="hlt">West</span> Texas and New Mexico, are typically anhydritic dolomitized limestone. Because the dolomitization occurred soon after deposition, depositional fabrics and patterns are often retained, and a reservoir model can be constructed using depositional concepts. Recent studies of the San Andres outcrop in the Guadalupe Mountains and the Seminole San Andres reservoir in the Permian <span class="hlt">Basin</span> illustrate how depositional fabrics and patterns can be used to construct a reservoir model when depositional features are retained.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/27169229','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/27169229"><span>[Genetic Differentiation of Sockeye Salmon Oncorhynchus nerka from Kamchatka River <span class="hlt">Basin</span> and the Lake-River Systems of the <span class="hlt">West</span> Coast of the Bering Sea as Inferred from Data on Single Nucleotide Polymorphism].</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Khrustaleva, A M; Klovach, N V; Vedischeva, E V; Seeb, J E</p> <p>2015-10-01</p> <p>The variability of 45 single nucleotide polymorphism loci (SNP) was studied in sockeye salmon from the Kamchatka River <span class="hlt">basin</span> and four lake-river systems of the <span class="hlt">west</span> coast of the Bering Sea. Based on the genetic differentiation estimates for the largest sockeye salmon populations of Eastern Kamchatka and Chukotka, the examined samples were combined into two regional groups represented by the population of the Kamchatka River drainage, which included numerous local subpopulations and seasonal races, and the northern population grouping from the rivers of Olutorsko-Navarinsky raion, wherein the sockeye salmon from Maynypilginskaya Lake-River system was relatively isolated. Considerable divergence was observed between the island (Sarannoe Lake, Bering Island) and continental populations. Genetic heterogeneity was revealed and groups of early- and late-maturing individuals were isolated in the sample of late-run sockeye salmon from Kamchatka River. In Apuka River, subdivision of the spawning run into two genetically distinct spatial and temporal groupings was also observed. The results suggest that the differentiation of sockeye salmon samples by single nucleotide substitution frequencies was largely due to differences in the direction and strength of local selection at some loci in the population complexes and intrapopulation groupings from the examined river <span class="hlt">basins</span> of Eastern Kamchatka, Chukotka, and Commander Islands.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/6746488','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/6746488"><span>(The role of zooplankton in the cycling and remineralization of chemical materials in the Southern California Bight): California <span class="hlt">Basin</span> Study: DOE <span class="hlt">west</span> coast <span class="hlt">basin</span> program: Progress report 4, (June 1987--June 1988)</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Small, L.F.; Huh, Chih-An</p> <p>1988-06-01</p> <p>The overall objective of our research, within the structure of the DOE CaBS (California <span class="hlt">Basin</span> Study) program, is to understand the transport pathways and mass balances of selected metabolically active and inactive chemical species in the Santa Monica/San Pedro <span class="hlt">Basins</span>. One focus of our study is to examine the role of zooplankton and micronekton in the cycling and remineralization of chemical materials in the Southern California Bight, with particular reference to C, N and certain radionuclides and trace metals. A second focus is to examine these same radionuclides and trace metals in other reservoirs besides the zooplankton (i.e., in seawater, sediment trap material and bottom sediments). Knowledge of the rates, routes and reservoirs of these nuclides and metals should lead to a cogent model for these elements in Santa Monica/San Pedro <span class="hlt">Basins</span>. Our zooplankton C and N data, in conjunction with primary production, microbiological and sediment flux data from colleagues in the program, should also lead ultimately to a model of C and N cycling in the <span class="hlt">basins</span>. 33 refs., 13 figs., 7 tabs.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.dtic.mil/docs/citations/ADA154719','DTIC-ST'); return false;" href="http://www.dtic.mil/docs/citations/ADA154719"><span>National Program for Inspection of Non-Federal Dams. <span class="hlt">West</span> Lake Dam (MA 00288), Connecticut River <span class="hlt">Basin</span>, Sandisfield, Massachusetts. Phase I Inspection Report.</span></a></p> <p><a target="_blank" href="https://publicaccess.dtic.mil/psm/api/service/search/search">DTIC Science & Technology</a></p> <p></p> <p>1979-12-01</p> <p>BRIEF ASSESSMENT 1 The <span class="hlt">West</span> Lake Dam, No. MA 288, is located on Morley Brook a tribu - tary to the Buck and Clam Rivers, in the Town of Sandisfield, Massa... DANI NEI A L . muSETTS RADLE,’ !LAR,PONDDRAININLET& STEEL SCHIEDULE MO]A I.(()SA i’i 65 SLi( AD-R154 719 NATIONAL PROGRAM FOR INSPECTION OF NON-FEDERfL</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2012AGUFMNS41B1672D','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2012AGUFMNS41B1672D"><span>Determining Deep <span class="hlt">Basin</span> Structure of the Hueco and southern Mesilla Bolsons, <span class="hlt">West</span> Texas, Southern New Mexico and Northern Chihuahua Using Nonseismic Geophysical Techniques</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Doser, D. I.; Avila, V.; Budhathoki, P.; Marrufo, S.; Montana, C. J.; Kaip, G.; Moncada, M.; Dena Ornelas, O.</p> <p>2012-12-01</p> <p>The Hueco and southern Mesilla bolsons are the primary groundwater source for much of the El Paso/Ciudad Juarez metropolitan region of over 1 million residents. The bolsons lie at the point where the strike of the southern Rio Grande rift changes from north-south to northwest-southeast, likely due to its interaction with pre-existing Mesozoic and Paleozoic structures. Tectonic activity continues with recent (< 750,000 years) movement along <span class="hlt">basin</span> bounding and low level (M<4) seismicity. Over the past 4 years we have been using a conjunction of microgravity, magnetic, water well logs and electrical resistivity studies to image the complex structure of these <span class="hlt">basins</span> within a heavily urbanized environment. These studies suggest the presence of several northwest-southeast striking cross faults within the southern Mesilla Bolson as well as an extensive subsurface andesite body related to the Cristo Rey laccolith. Intrabasin faults in the Hueco Bolson appear to cut the <span class="hlt">basin</span> into at least 3 smaller subbasins and to control the boundary between fresh and saline water within the aquifer system beneath El Paso. We are also able to trace the East Franklins Mountain fault (last movement < 15,000 ya) at least 15 km south of the U.S.-Mexico border.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70014557','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70014557"><span>Shallow subsurface temperature surveys in the <span class="hlt">basin</span> and range province-II. Ground temperatures in the upsal hogback geothermal area, <span class="hlt">West</span>-Central Nevada, U.S.A.</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Olmsted, F.H.; Ingebritsen, S.E.</p> <p>1986-01-01</p> <p>Numerous temperature surveys at a depth of 1 m were made in 1973-1985 in the Upsal Hogback and Soda Lakes geothermal areas in <span class="hlt">west</span>-central Nevada. Whereas the surveys effectively delineated temperature at depth and heat flow within the relatively intense Soda Lakes thermal anomaly, they were not effective at the diffuse Upsal Hogback anomaly, where several perturbing factors that affect shallow subsurface temperatures are exceedingly variable. Albedo is the most important factor in the Upsal Hogback area, even at a depth of 30 m. All possible perturbing factors should be considered when designing a shallow temperature-based prospecting scheme. ?? 1986.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_12");'>12</a></li> <li><a href="#" onclick='return showDiv("page_13");'>13</a></li> <li class="active"><span>14</span></li> <li><a href="#" onclick='return showDiv("page_15");'>15</a></li> <li><a href="#" onclick='return showDiv("page_16");'>16</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_14 --> <div id="page_15" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_13");'>13</a></li> <li><a href="#" onclick='return showDiv("page_14");'>14</a></li> <li class="active"><span>15</span></li> <li><a href="#" onclick='return showDiv("page_16");'>16</a></li> <li><a href="#" onclick='return showDiv("page_17");'>17</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="281"> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/643513','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/643513"><span>Geoscience/Engineering Characterization of the Interwell Environment in Carbonate Reservoirs Based on Outcrop Analogs, Permian <span class="hlt">Basin</span>, <span class="hlt">West</span> Texas and New Mexico.</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Lucia, F.J.; Kerans, C.</p> <p>1996-12-31</p> <p>The objective of this project is to investigate styles of reservoir heterogeneity found in low permeability pelleted wackestone/packstone facies and mixed carbonate/clastic facies found in Permian <span class="hlt">Basin</span> reservoirs by studying similar facies exposed in the Guadalupe Mountains. Specific objectives for the outcrop study include construction of a stratigraphic framework, petrophysical quantification of the framework, and testing the outcrop reservoir model for effects of reservoir heterogeneity on production performance. Specific objectives for the subsurface study parallel objectives for the outcrop study.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/781588','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/781588"><span>Supplementary information on K-<span class="hlt">Basin</span> sludges</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>MAKENAS, B.J.</p> <p>1999-03-15</p> <p>Three previous documents in this series have been published covering the analysis of: K East <span class="hlt">Basin</span> Floor and Pit Sludge, K East <span class="hlt">Basin</span> Canister Sludge, and K <span class="hlt">West</span> <span class="hlt">Basin</span> Canister Sludge. Since their publication, additional data have been acquired and analyses performed. It is the purpose of this volume to summarize the additional insights gained in the interim time period.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.gpo.gov/fdsys/pkg/FR-2012-02-29/pdf/2012-4771.pdf','FEDREG'); return false;" href="https://www.gpo.gov/fdsys/pkg/FR-2012-02-29/pdf/2012-4771.pdf"><span>77 FR 12281 - Williston <span class="hlt">Basin</span> Interstate Pipeline Company; Notice of Request Under Blanket Authorization</span></a></p> <p><a target="_blank" href="http://www.gpo.gov/fdsys/browse/collection.action?collectionCode=FR">Federal Register 2010, 2011, 2012, 2013, 2014</a></p> <p></p> <p>2012-02-29</p> <p>... Energy Regulatory Commission Williston <span class="hlt">Basin</span> Interstate Pipeline Company; Notice of Request Under Blanket Authorization Take notice that on February 15, 2012, Williston <span class="hlt">Basin</span> Interstate Pipeline Company (Williston <span class="hlt">Basin</span>), 1250 <span class="hlt">West</span> Century Avenue, Bismarck, North Dakota 58503, pursuant to its blanket...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/wsp/1329a/report.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/wsp/1329a/report.pdf"><span>Water-power resources in upper Carson River <span class="hlt">basin</span>, California-Nevada, A discussion of potential development of power and reservoir sites on east and <span class="hlt">west</span> forks, Carson River</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Pumphrey, Harold L.</p> <p>1955-01-01</p> <p><span class="hlt">West</span> Fork Carson River offers the best opportunity for power development in the Carson River <span class="hlt">basin</span>. The Hope Valley reservoir site could be developed to provide adequate storage regulation and concentration of fall would permit utilization of 1,400 feet of head in 51h miles below the clam site, or 1,900 feet of head in about 972 miles below the dam site; however, the average annual runoff susceptible of development is only about 70,000 acre-feet which limits the power that could be developed continuously in an average year with regulation to about 8,700 kilowatts utilizing 1,400 feet of head, or 12,000 kilowatts utilizing 1,900 feet of head. The method and degree of development will be determined to large extent by the method devised to supplement regulated flows from the Hope Valley reservoir to supply the water already appropriated for irrigation. If the Hope Valley site and the Watasheamu site on East Fork Carson River were developed coordinately water could be transferred to the <span class="hlt">West</span> Fork for distribution through canals leading from that stream thus satisfying the deficiency due to regulation at Hope Valley and release of stored water on a power schedule. This would permit utilization of the entire 1,900 feet of fall. Independent development of the <span class="hlt">West</span> Fork for optimum power production would require re-regulation of releases from Hope Valley reservoir and storage of a considerable part of the fall and winter flow for use during the irrigation season. Adequate storage capacity is apparently not available on the <span class="hlt">West</span> Fork below Hope Valley; but offstream storage may be available in Diamond Valley which could be utilized by diversion from the <span class="hlt">West</span> Fork near Woodfords. This would limit the utilization of the stream for power purposes to the development of the 1,400 feet of head between the Hope Valley dam site and Wood fords. In a year of average discharge East Fork Carson River and three of its principal tributaries could be developed to produce about 13</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/30494','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/30494"><span>Characteristics and properties of the <span class="hlt">basin</span>-fill aquifer determined from three test wells <span class="hlt">west</span> of Albuquerque, Bernalillo County, New Mexico</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Wilkins, D.W.</p> <p>1987-01-01</p> <p>Three test wells were drilled <span class="hlt">west</span> of Albuquerque; two are on the mesa <span class="hlt">west</span> of the city, the third well is near the Rio Grande flood plain, <span class="hlt">west</span> of the river. Test well 1, was drilled to a depth of 1,204 ft. Transmissivity of perforated intervals in the alluvial zone (980-1121 ft) ranged from 3.1 to 3.9 ft sq/day, and horizontal hydraulic conductivity from .02 to .03 ft/day. Vertical hydraulic conductivity of the semiconfining layer between the alluvial and volcanic zones is estimated to range from .00031 to .0031 ft/day. Transmissivity of the volcanic zone (1139-1179 ft) is about 81 ft sq/day, and horizontal hydraulic conductivity is about 2.0 ft/day. Dissolved-iron and manganese concentrations exceed recommended constituent limits for a public water supply. Vertical flow is upward; the potentiometric surface in the volcanic zone is about 2 ft higher than in the alluvial zone. Water levels are about 883 ft below land surface. Test well 2 was drilled to a depth of 1,828 ft below land surface with seven intervals open to the aquifer. During development, fine sand and silt entered the casing, filling it to a depth of 1,500 ft. The dissolved-cadmium concentration exceeds the maximum contaminant level and the dissolved-manganese concentration exceeds the recommended constituent limit for a public water supply. The vertical flow gradient is downward; the potentiometric surface in the middle and lower zones is about 17 ft lower than in the upper zones. Depth to water in the upper zone is about 767 below land surface and in the lower two zones the depth to water is about 784 ft below land surface. Test well 3 was drilled to a depth of 1,050 ft. Only the interval from 490 to 590 ft below land surface could be used to calculate transmissivity which was about 1,300 ft sq/day; horizontal hydraulic conductivity is about 13 ft/day. Quality of water is acceptable for a public water supply. Vertical flow is downward; the potentiometric surface in the deepest interval is about 7</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2011JHyd..402....1S','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2011JHyd..402....1S"><span>Origins of streamflow in a crystalline basement catchment in a sub-humid Sudanian zone: The Donga <span class="hlt">basin</span> (Benin, <span class="hlt">West</span> Africa): Inter-annual variability of water budget</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Séguis, L.; Kamagaté, B.; Favreau, G.; Descloitres, M.; Seidel, J.-L.; Galle, S.; Peugeot, C.; Gosset, M.; Le Barbé, L.; Malinur, F.; Van Exter, S.; Arjounin, M.; Boubkraoui, S.; Wubda, M.</p> <p>2011-05-01</p> <p>SummaryDuring the last quarter of the 20th century, <span class="hlt">West</span> Africa underwent a particularly intense and generalized drought. During this period, the biggest drops in streamflow were observed in the Sudanian zone rather than in the Sahelian zone, but the reasons are still poorly understood. In 2000, a meso-scale hydrological observatory was set up in the sub-humid Sudanian zone of the Upper Ouémé Valley (Benin). Three embedded catchments of 12-586 km 2 located on a crystalline bedrock were intensively instrumented to document the different terms of the water budget and to identify the main streamflow generating processes and base-flow mechanisms at different scales. Geophysical, hydrological and geochemical data were collected throughout the catchments from 2002 to 2006. Crossing these data helped define their hydrological functioning. The region has seasonal streamflow, and the permanent groundwater in the weathered mantle does not drain to rivers, instead, seasonal perched groundwaters are the major contributor to annual streamflow. The perched groundwaters are mainly located in seasonally waterlogged sandy layers in the headwater bottom-lands called bas-fonds in French-speaking <span class="hlt">West</span> Africa of 1st order streams. During the period 2003-2006, regolith groundwater recharge ranged between 10% and 15% of the annual rainfall depth. Depletion of permanent groundwater during the dry season is probably explained by local evapotranspiration which was seen not to be limited to gallery forests. During the 4-year study period, a reduction of 20% in annual rainfall led to a 50% reduction in streamflow. This reduction was observed in the two components of the flow: direct runoff and drainage of perched groundwater. Thanks to the comprehensive dataset obtained, the results obtained for the Donga experimental catchment are now being extrapolated to the whole upper Ouémé valley, which can be considered as representative of sub-humid Sudanian rivers flowing on a crystalline</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('//www.loc.gov/pictures/collection/hh/item/pa3415.photos.359943p/','SCIGOV-HHH'); return false;" href="//www.loc.gov/pictures/collection/hh/item/pa3415.photos.359943p/"><span>View westsouthwest of marine railway at reserve <span class="hlt">basin</span> of Philadelphia ...</span></a></p> <p><a target="_blank" href="http://www.loc.gov/pictures/collection/hh/">Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey</a></p> <p></p> <p></p> <p>View <span class="hlt">west</span>-southwest of marine railway at reserve <span class="hlt">basin</span> of Philadelphia Naval Shipyard. - Naval Base Philadelphia-Philadelphia Naval Shipyard, Reserve <span class="hlt">Basin</span> & Marine Railway, League Island, Philadelphia, Philadelphia County, PA</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/598542','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/598542"><span>Geoscience/Engineering Characterization of the Interwell Environment in Carbonate Reservoirs Based on Outcrop Analogs, Permian <span class="hlt">Basin</span>, <span class="hlt">West</span> Texas and New Mexico.</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Lucia, Jerry F.; Kerans, Charles</p> <p>1997-05-29</p> <p>The objective of this project is to investigate styles of reservoir heterogeneity found in low permeability pelleted wackestone/packstone facies and mixed carbonate/clastic facies found in Permian <span class="hlt">Basin</span> reservoirs by studying similar facies exposed in the Guadalupe Mountains. Specific objectives for the outcrop study include construction of a stratigraphic framework, petrophysical quantification of the framework, and testing the outcrop reservoir model for effects of reservoir heterogeneity on production performance. Specific objectives for the subsurface study parallel objectives for the outcrop study. Subsurface Activities - We continue to prepare two final reports that summarize research results of the South Cowden Field study. One report summarizes results of the petrophysical characterization research, and one summarizes results of the fluid-flow modeling research. Outcrop Activities - We also continue to prepare the final report, which summarizes the research results of the Grayburg outcrop reservoir study.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/598567','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/598567"><span>Geoscience/Engineering Characterization of the Interwell Environment in Carbonate Reservoirs Based on Outcrop Analogs, Permian <span class="hlt">Basin</span>, <span class="hlt">West</span> Texas and New Mexico.</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Lucia, Jerry F.; Kerans, Charles</p> <p>1997-05-19</p> <p>The objective of this project is to investigate styles of reservoir heterogeneity found in low permeability pelleted wackestone/packstone facies and mixed carbonate/clastic facies found in Permian <span class="hlt">Basin</span> reservoirs by studying similar facies exposed in the Guadalupe Mountains. Specific objectives for the outcrop study include construction of a stratigraphic framework, petrophysical quantification of the framework, and testing the outcrop reservoir model for effects of reservoir heterogeneity on production performance. Specific objectives for the subsurface study parallel objectives for the outcrop study. Subsurface Activities - We continue to prepare two final reports that summarize research results of the South Cowden Field study. One report summarizes results of the petrophysical characterization research, and one summarizes results of the fluid-flow modeling research. Outcrop Activities - We also continue to prepare the final report, which summarizes the research results of the Grayburg outcrop reservoir study.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/494203','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/494203"><span>Heterogeneity of fluvial-deltaic reservoirs in the Appalachian <span class="hlt">basin</span>: A case study from a Lower Mississippian oil field in central <span class="hlt">West</span> Virginia</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Hohn, M.E.; McDowell, R.R.; Matchen, D.L.</p> <p>1997-06-01</p> <p>Since discovery in 1924, Granny Creek field in central <span class="hlt">West</span> Virginia has experienced several periods of renewed drilling for oil in a fluvial-deltaic sandstone in the Lower Mississippian Price Formation. Depositional and diagenetic features leading to reservoir heterogeneity include highly variable grain size, thin shale and siltstone beds, and zones containing large quantities of calcite, siderite, or quartz cement. Electrofacies defined through cluster analysis of wireline log responses corresponded approximately to facies observed in core. Three-dimensional models of porosity computed from density logs showed that zones of relatively high porosity were discontinuous across the field. The regression of core permeability on core porosity is statistically significant, and differs for each electrofacies. Zones of high permeability estimated from porosity and electrofacies tend to be discontinuous and aligned roughly north-south. Cumulative oil production varies considerably between adjacent wells, and corresponds very poorly with trends in porosity and permeability. Original oil in place, estimated for each well from reservoir thickness, porosity, water saturation, and an assumed value for drainage radius, is highly variable in the southern part of the field, which is characterized by relatively complex interfingering of electrofacies and similar variability in porosity and permeability.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/6785850','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/6785850"><span>Stratigraphy, sedimentology, and ichnology of the Late Pennsylvanian Glenshaw Formation (Lower Conemaugh Group), southern Dunkard <span class="hlt">basin</span>, Ohio-Kentucky-<span class="hlt">West</span> Virginia</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Martino, R.L. . Dept. of Geology)</p> <p>1994-03-01</p> <p>Facies analysis of outcrops of the Glenshaw Formation was carried out at 45 localities over a 761 sq. km area. The glenshaw Formation is 61--76 m thick in the study area. Four marine units (Lower Brush Creek, Upper Brush Creek, Cambridge , and Ames) occur which contain invertebrate body fossils and/or trace fossils including Teichichnus, Rhizocorallium, Aulichnites, Paleophycus, Lockeia, and Curvolithus. Alluvial channel-fills contain internal features that reflect deposition in high sinuosity suspended or mixed load rivers. Paleocurrent data (N = 77) are broadly dispersed with a mean azimuth of 335 degrees. Overbank facies have yielded trackways from giant arthropods and Eryopoid amphibians (Limnopus). There are fewer marine units in the glenshaw than toward the north and <span class="hlt">west</span> which has made direct detailed correlation of much of the formation problematic. The coal beds and marine units used previous stratigraphic studies may be extended through the recognition of non-coal-bearing paleosols and marine-influenced intervals distinguished by facies relations, and sedimentary and biogenic structures. Nine laterally persistent, paleosol-bounded packages occur which are comparable to allocyclic T-R units reported by Busch and Rollins (1984) from Pennsylvania and Ohio. Alternating episodes of soil formation and alluvial aggradation may reflect updip coastal plain responses to low stand incision of drainage lines and sediment bypassing followed by aggradation of alluvial systems in response to rising sea level. Climate changes may also have played a role in sediment flux.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://ngmdb.usgs.gov/Prodesc/proddesc_84767.htm','USGSPUBS'); return false;" href="http://ngmdb.usgs.gov/Prodesc/proddesc_84767.htm"><span>Stratigraphic Framework of Cambrian and Ordovician Rocks in the Appalachian <span class="hlt">Basin</span> from Sequatchie County, Tennessee, through Eastern Kentucky, to Mingo County, <span class="hlt">West</span> Virginia</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Ryder, Robert T.; Crangle, Robert D.; Repetski, John E.; Harris, Anita G.</p> <p>2008-01-01</p> <p>Cross section H-H' is the seventh in a series of restored cross sections constructed by the lead author to show the stratigraphic framework of Cambrian and Ordovician rocks in the Appalachian <span class="hlt">basin</span> from Pennsylvania to Tennessee. The sections show complexly intertongued carbonate and siliciclastic lithofacies, marked thickness variations, key marker horizons, unconformities, stratigraphic nomenclature of the Cambrian and Ordovician sequence, and major faults that offset Proterozoic basement and overlying lower Paleozoic rocks. Several of the drill holes along the cross section have yielded a variety of whole and (or) fragmented conodont elements. The identifiable conodonts are used to differentiate strata of Late Cambrian, Early Ordovician, and Middle Ordovician age, and their conodont color alteration index (CAI) values are used to establish the thermal maturity of the sequence. Previous cross sections in this series are G-G', F-F', E-E', D-D', C-C', and B-B'. Many of these cross sections (B-B', C-C', D-D', and G-G') have been improved with the addition of gamma-ray log traces, converted to digital images, and made accessible on the Web.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/425834','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/425834"><span>Tectonic events, sequence stratigraphy and prediction of petroleum play elements in the Cretaceous and Tertiary of the northern Carnarvon <span class="hlt">Basin</span>, north <span class="hlt">west</span> shelf, Australia</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Romine, K.K.; Durrant, J.D.</p> <p>1996-12-31</p> <p>The Carnarvon <span class="hlt">Basin</span> is one of Australia`s most prolific oil and gas provinces. A recent Paleocene discovery has initiated a shift in exploration interest from traditional Jurassic/Triassic plays to the younger Cretaceous and Tertiary section. To improve play element prediction, a sequence stratigraphic study has been completed, utilizing newly acquired, regional high-resolution seismic data and 80 wells. The occurrence and distribution of the key play elements, reservoir, source and seal, is controlled by the interaction of tectonic subsidence, eustasy and paleogeography, with traps and migration pathways set up and modified by regional tectonic events. For example, a major rifting event commenced in the latest Kimmeridgian-Tithonian that resulted in structuring of older Jurassic sediments and initiation of seafloor spreading in the adjacent Cuvier-Gascoyne Abyssal Plain in the Valanginian. This event was accompanied by a dramatic fall in eustasy that initiated the deposition of high-quality reservoir sandstones of the Tithonian-Valanginian age Barrow Delta. The post-rift phase of thermal cooling and rapid subsidence resulted in transgression, accompanied by deposition of backstepping parasequences of the Mardie Greensand, a potential thief zone and reservoir, and culminated in maximum transgression and deposition of seal and source facies of the Muclerong Shale. The improved sequence stratigraphic framework established in this study provides a predictive tool for the development and assessment of new plays.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/6576191','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/6576191"><span>Tectonic events, sequence stratigraphy and prediction of petroleum play elements in the Cretaceous and Tertiary of the northern Carnarvon <span class="hlt">Basin</span>, north <span class="hlt">west</span> shelf, Australia</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Romine, K.K. ); Durrant, J.D. )</p> <p>1996-01-01</p> <p>The Carnarvon <span class="hlt">Basin</span> is one of Australia's most prolific oil and gas provinces. A recent Paleocene discovery has initiated a shift in exploration interest from traditional Jurassic/Triassic plays to the younger Cretaceous and Tertiary section. To improve play element prediction, a sequence stratigraphic study has been completed, utilizing newly acquired, regional high-resolution seismic data and 80 wells. The occurrence and distribution of the key play elements, reservoir, source and seal, is controlled by the interaction of tectonic subsidence, eustasy and paleogeography, with traps and migration pathways set up and modified by regional tectonic events. For example, a major rifting event commenced in the latest Kimmeridgian-Tithonian that resulted in structuring of older Jurassic sediments and initiation of seafloor spreading in the adjacent Cuvier-Gascoyne Abyssal Plain in the Valanginian. This event was accompanied by a dramatic fall in eustasy that initiated the deposition of high-quality reservoir sandstones of the Tithonian-Valanginian age Barrow Delta. The post-rift phase of thermal cooling and rapid subsidence resulted in transgression, accompanied by deposition of backstepping parasequences of the Mardie Greensand, a potential thief zone and reservoir, and culminated in maximum transgression and deposition of seal and source facies of the Muclerong Shale. The improved sequence stratigraphic framework established in this study provides a predictive tool for the development and assessment of new plays.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2015AGUFMGC43B1203G','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2015AGUFMGC43B1203G"><span>Improvement and Comparative Assessment of a New Hydrological Modelling Approach for the Ouémé River <span class="hlt">Basin</span> (Bénin), <span class="hlt">West</span> Africa</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>GABA, C. O. U.</p> <p>2015-12-01</p> <p>Assessing water resources is still an important issue especially in the context of climatic changes. Although numerous hydrological models exist, new approaches are still under investigation. In this context, we propose a new modelling approach based on the Physics Principle of Least Action. A first version of a Least Action based model, in its deterministic version has already given very good results on simulating the Bétérou catchment in the Ouémé <span class="hlt">basin</span>, Benin. The paper presents new hypotheses to go further in the model development with a view of widening its application. The improved version of the model MODYPMA was applied on 22 subcatchments in Africa, in Bénin, Côte d'Ivoire, Ethiopia; in Europe, and in the USA. Its performance was compared to two well known lumped conceptual models, the GR4J and HBV models. The model could be successfully calibrated and validated; it shows a good performance for a range of scales but a limited applicability to catchments smaller than 500 km2 . The analysis revealed that the three models have similar performance and timing errors. The parameter uncertainty was analysed using the GLUE methodology. It is concluded that model uncertainty is higher during high flows and that uncertainty analysis should include the uncertainty of the discharge data. Finally, some aspects that further research must address are brought out.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2027/mdp.39015018204951?urlappend=%3Bseq=3','USGSPUBS'); return false;" href="http://hdl.handle.net/2027/mdp.39015018204951?urlappend=%3Bseq=3"><span>Ground water withdrawn for municipal, industrial, and irrigation use in the Upper Peace and Alafia River <span class="hlt">basins</span>, <span class="hlt">west</span>-central Florida, 1970-74</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Robertson, Alton F.; Mills, L.R.; Parsons, D.C.</p> <p>1978-01-01</p> <p>Data are presented for ground-water withdrawals for municipal, industrial and irrigation use in the upper Peace and Alafia River <span class="hlt">basins</span> during 1970-71. Within the 1,160-square-mile study area, the principal source of ground water is the Floridan aquifer. Methods used to determine ground-water withdrawal include: metering water use; relating measured well discharge to power consumption of pumping time; and relating water use to phosphate production, citrus irrigation or processing. About 90 percent of municipal pumpage is metered, and annual pumpage increased from 11,165 million gallons in 1970 to 13,455 in 1974. Water use per ton of phosphate produced is estimated to be 3,320 gallons per ton prior to 1971 and 2,460 gallons per ton from 1971 through 1974. Estimated ground-eater use by the phosphate industry has declined from 93.3 billion gallons in 1970 to 78.7 in 1974. Citrus irrigation pumpage is obtained by extrapolating pumpage obtained from pilot areas of unmeasured areas and has declined from 33.4 billion gallons in 1970 to 31.3 in 1974. The citrus processing industry used about 4.9 billion gallons in 1970 and about 5.9 in 1974. (Woodard-USGS)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/sir/2010/5171/','USGSPUBS'); return false;" href="https://pubs.usgs.gov/sir/2010/5171/"><span>Streamflow and water-quality properties in the <span class="hlt">West</span> Fork San Jacinto River <span class="hlt">Basin</span> and regression models to estimate real-time suspended-sediment and total suspended-solids concentrations and loads in the <span class="hlt">West</span> Fork San Jacinto River in the vicinity of Conroe, Texas, July 2008-August 2009</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Bodkin, Lee J.; Oden, Jeannette H.</p> <p>2010-01-01</p> <p>To better understand the hydrology (streamflow and water quality) of the <span class="hlt">West</span> Fork San Jacinto River <span class="hlt">Basin</span> downstream from Lake Conroe near Conroe, Texas, including spatial and temporal variation in suspended-sediment (SS) and total suspended-solids (TSS) concentrations and loads, the U.S. Geological Survey, in cooperation with the Houston-Galveston Area Council and the Texas Commission on Environmental Quality, measured streamflow and collected continuous and discrete water-quality data during July 2008-August 2009 in the <span class="hlt">West</span> Fork San Jacinto River <span class="hlt">Basin</span> downstream from Lake Conroe. During July 2008-August 2009, discrete samples were collected and streamflow measurements were made over the range of flow conditions at two streamflow-gaging stations on the <span class="hlt">West</span> Fork San Jacinto River: <span class="hlt">West</span> Fork San Jacinto River below Lake Conroe near Conroe, Texas (station 08067650) and <span class="hlt">West</span> Fork San Jacinto River near Conroe, Texas (station 08068000). In addition to samples collected at these two main monitoring sites, discrete sediment samples were also collected at five additional monitoring sites to help characterize water quality in the <span class="hlt">West</span> Fork San Jacinto River <span class="hlt">Basin</span>. Discrete samples were collected semimonthly, regardless of flow conditions, and during periods of high flow resulting from storms or releases from Lake Conroe. Because the period of data collection was relatively short (14 months) and low flow was prevalent during much of the study, relatively few samples collected were representative of the middle and upper ranges of historical daily mean streamflows. The largest streamflows tended to occur in response to large rainfall events and generally were associated with the largest SS and TSS concentrations. The maximum SS and TSS concentrations at station 08067650 (180 and 133 milligrams per liter [mg/L], respectively) were on April 19, 2009, when the instantaneous streamflow was the third largest associated with a discrete sample at the station. SS concentrations</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2015EGUGA..17.3666R','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2015EGUGA..17.3666R"><span>Sedimentary profile from oxbow lake as an archive for past productivity and vegetation changes: a case study from Ganges <span class="hlt">basin</span>, <span class="hlt">West</span> Bengal, India</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Rakshit, Subhadeep; Ghosh, Sambit; Sanyal, Prasanta; Ambili, Anoop</p> <p>2015-04-01</p> <p>Isotope (δ13CSOM) and biomarker (lipid n-alkane) investigations has been carried out on three sedimentary profiles (ca. 1.8 m depth) collected from Mohanpur, <span class="hlt">West</span> Bengal, India with the aim of reconstructing paleovegetational and paleoproductivity changes. Satellite images reveal that the investigated sediments has been deposited in an oxbow lake setting of the river Ganges. The correlation of the three sedimentary profiles has been achieved using lithological and isotopic (δ13CSOM) marker layers. The total organic carbon (TOC) content of the profile ranges from 0.9% to 0.1%. The isotopic analysis (δ13CSOM) shows values mostly fluctuating between -19.2o to -22o with a rapid excursions (~5) showing enriched δ13CSOMvalue (-14.2) observed at ca. 1.5 m depth. The biomarker studies of the profile reveals dominant preferences in short carbon chain (C14, C16, C18, C20) with a little preferences for higher chain (C29, C31, C33). Interestingly, n-alkanes at 1.5 m depth shows very high concentration in short chain n-alkanes. Since the lower chain n-alkane represents aquatic vegetation/productivity and higher chain indicates the terrestrial contribution, the data from the investigated sedimentary profile shows contribution mostly from aquatic vegetation with a little contribution from terrestrial plants. This inference has been further corroborated by δ13CSOMvalues (-19.2o to -22) of the sedimentary profile typical of mixed aquatic and terrestrial vegetation. Additionally, the enriched δ13CSOMvalue (-14.2) coupled with very high concentration of short chain n-alkanes at 1.5 m depth reveals intense lake eutrophication. The development of rigorous chronology and high resolution data set of additional analytical parameters (e.g., C/N, δ15N) will provide crucial paleoclimate data set from this unexplored setting of Indian summer monsoon domain.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2016EGUGA..18.9250F','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2016EGUGA..18.9250F"><span>Agricultural crop mapping and classification by Landsat images to evaluate water use in the Lake Urmia <span class="hlt">basin</span>, North-<span class="hlt">west</span> Iran</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Fazel, Nasim; Norouzi, Hamid; Madani, Kaveh; Kløve, Bjørn</p> <p>2016-04-01</p> <p>Lake Urmia, once one of the largest hypersaline lakes in the world has lost more than 90% of its surface body mainly due to the intensive expansion of agriculture, using more than 90% of all water in the region. Access to accurate and up-to-date information on the extent and distribution of individual crop types, associated with land use changes and practices, has significant value in intensively agricultural regions. Explicit information of croplands can be useful for sustainable water resources, land and agriculture planning and management. Remote sensing, has been proven to be a more cost-effective alternative to the traditional statistically-based ground surveys for crop coverage areas that are costly and provide insufficient information. Satellite images along with ground surveys can provide the necessary information of spatial coverage and spectral responses of croplands for sustainable agricultural management. This study strives to differentiate different crop types and agricultural practices to achieve a higher detailed crop map of the Lake Urmia <span class="hlt">basin</span>. The mapping approach consists of a two-stage supervised classification of multi-temporal multi-spectral high resolution images obtained from Landsat imagery archive. Irrigated and non-irrigated croplands and orchards were separated from other major land covers (urban, ranges, bare-lands, and water) in the region by means of maximum Likelihood supervised classification method. The field data collected during 2015 and land use maps generated in 2007 and Google Earth comparisons were used to form a training data set to perform the supervised classification. In the second stage, non-agricultural lands were masked and the supervised classification was applied on the Landsat images stack to identify seven major croplands in the region (wheat and barley, beetroot, corn, sunflower, alfalfa, vineyards, and apple orchards). The obtained results can be of significant value to the Urmia Lake restoration efforts which</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70016113','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70016113"><span>Paleontological analysis of a lacustrine carbonaceous uranium deposit at the Anderson mine, Date Creek <span class="hlt">basin</span>, <span class="hlt">west</span>-central Arizona (U.S.A.)</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Otton, J.K.; Bradbury, J.P.; Forester, R.M.; Hanley, J.H.</p> <p>1990-01-01</p> <p>The Tertiary sedimentary sequence of the Date Creek <span class="hlt">basin</span> area of Arizona is composed principally of intertonguing alluvial-fan and lacustrine deposits. The lacustrine rocks contain large intermediate- to, locally, high-grade uranium deposits that form one of the largest uranium resources in the United States (an estimated 670,000 tons of U3O8 at an average grade of 0.023% is indicated by drilling to date). At the Anderson mine, about 50,000 tons of U3O8 occurs in lacustrine carbonaceous siltstones and mudstones (using a cutoff grade of 0.01%). The Anderson mine constitutes a new class of ore deposit, a lacustrine carbonaceous uranium deposit. Floral and faunal remains at the Anderson mine played a critical role in creating and documenting conditions necessary for uranium mineralization. Organic-rich, uraniferous rocks at the Anderson mine contain plant remains and ostracodes having remarkably detailed preservation of internal features because of infilling by opaline silica. This preservation suggests that the alkaline lake waters in the mine area contained high concentrations of dissolved silica and that silicification occurred rapidly, before compaction or cementation of the enclosing sediment. Uranium coprecipitated with the silica. Thinly laminated, dark-colored, siliceous beds contain centric diatoms preserved with carbonaceous material suggesting that lake waters at the mine were locally deep and anoxic. These alkaline, silica-charged waters and a stagnant, anoxic environment in parts of the lake were necessary conditions for the precipitation of large amounts of uranium in the lake-bottom sediments. Sediments at the Anderson mine contain plant remains and pollen that were derived from diverse vegetative zones suggesting about 1500 m of relief in the area at the time of deposition. The pollen suggests that the valley floor was semiarid and subtropical, whereas nearby mountains supported temperate deciduous forests. ?? 1990.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_13");'>13</a></li> <li><a href="#" onclick='return showDiv("page_14");'>14</a></li> <li class="active"><span>15</span></li> <li><a href="#" onclick='return showDiv("page_16");'>16</a></li> <li><a href="#" onclick='return showDiv("page_17");'>17</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_15 --> <div id="page_16" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_14");'>14</a></li> <li><a href="#" onclick='return showDiv("page_15");'>15</a></li> <li class="active"><span>16</span></li> <li><a href="#" onclick='return showDiv("page_17");'>17</a></li> <li><a href="#" onclick='return showDiv("page_18");'>18</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="301"> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/5749053','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/5749053"><span>Tectonic framework of Turkish sedimentary <span class="hlt">basins</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Yilmaz, P.O. )</p> <p>1988-08-01</p> <p>Turkey's exploration potential primarily exists in seven onshore (Southeast Turkey platform, Tauride platform, Pontide platform, East Anatolian platform, Interior, Trace, and Adana) <span class="hlt">basins</span> and four offshore (Black Sea, Marmara Sea, Aegean Sea, and Mediterranean Sea) regional <span class="hlt">basins</span> formed during the Mesozoic and Tertiary. The Mesozoic <span class="hlt">basins</span> are the onshore <span class="hlt">basins</span>: Southeast Turkey, Tauride, Pontide, East Anatolian, and Interior <span class="hlt">basins</span>. Due to their common tectonic heritage, the southeast Turkey and Tauride <span class="hlt">basins</span> have similar source rocks, structural growth, trap size, and structural styles. In the north, another Mesozoic <span class="hlt">basin</span>, the Pontide platform, has a much more complex history and very little in common with the southerly <span class="hlt">basins</span>. The Pontide has two distinct parts; the <span class="hlt">west</span> has Paleozoic continental basement and the east is underlain by island-arc basement of Jurassic age. The plays are in the upper Mesozoic rocks in the <span class="hlt">west</span> Pontide. The remaining Mesozoic <span class="hlt">basins</span> of the onshore Interior and East Anatolian <span class="hlt">basins</span> are poorly known and very complex. Their source, reservoir, and seal are not clearly defined. The <span class="hlt">basins</span> formed during several orogenic phases in mesozoic and Tertiary. The Cenozoic <span class="hlt">basins</span> are the onshore Thrace and Adana <span class="hlt">basins</span>, and all offshore regional <span class="hlt">basins</span> formed during Miocene extension. Further complicating the onshore <span class="hlt">basins</span> evolution is the superposition of Cenozoic <span class="hlt">basins</span> and Mesozoic <span class="hlt">basins</span>. The Thrace <span class="hlt">basin</span> in the northwest and Adana <span class="hlt">basin</span> in the south both originate from Tertiary extension over Tethyan basement and result in a similar source, reservoir, and seal. Local strike-slip movement along the North Anatolian fault modifies the Thrace <span class="hlt">basin</span> structures, influencing its hydrocarbon potential.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/10118054','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/10118054"><span>Summary status of K <span class="hlt">Basins</span> sludge characterization</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Baker, R.B.</p> <p>1995-01-20</p> <p>A number of activities are underway as part of the Spent Nuclear Fuels Project (SNFP) related to the processing and disposing of sludge in the <span class="hlt">105</span>-<span class="hlt">K</span> <span class="hlt">Basins</span> (K <span class="hlt">Basins</span>). Efforts to rigorously define data requirements for these activities are being made using the Data Quality Objectives (DQO) process. Summaries of current sludge characterization data are required to both help support this DQO process and to allow continued progress with on-going engineering activities (e.g., evaluations of disposal alternatives). This document provides the status of K <span class="hlt">Basins</span> sludge characterization data currently available to the Nuclear Fuel Evaluations group. This group is tasked by the SNFP to help develop and maintain the characterization baseline for the K <span class="hlt">Basins</span>. The specific objectives of this document are to: (1) provide a current summary (and set of references) of sludge characterization data for use by SNFP initiatives, to avoid unnecessary duplication of effort and to support on-going initiatives; (2) submit these data to an open forum for review and comment, and identify additional sources of significant data that may be available; (3) provide a summary of current data to use as part of the basis to develop requirements for additional sludge characterization data through the DQO process; (4) provide an overview of the intended activities that will be used to develop and maintain the sludge characterization baseline.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/5342399','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/5342399"><span>Quaternary faults of <span class="hlt">west</span> Texas</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Collins, E.W.; Raney, J.A. . Bureau of Economic Geology)</p> <p>1993-04-01</p> <p>North- and northwest-striking intermontane <span class="hlt">basins</span> and associated normal faults in <span class="hlt">West</span> Texas and adjacent Chihuahua, Mexico, formed in response to <span class="hlt">Basin</span> and Range tectonism that began about 24 Ma ago. Data on the precise ages of faulted and unfaulted Quaternary deposits are sparse. However, age estimates made on the basis of field stratigraphic relationships and the degree of calcic soil development have helped determine that many of the faults that bound the <span class="hlt">basin</span> margins ruptured since the middle Pleistocene and that some faults probably ruptured during the Holocene. Average recurrence intervals between surface ruptures since the middle Pleistocene appear to be relatively long, about 10,000 to 100,000 yr. Maximum throw during single rupture events have been between 1 and 3 m. Historic seismicity in <span class="hlt">West</span> Texas is low compared to seismicity in many parts of the <span class="hlt">Basin</span> and Range province. The largest historic earthquake, the 1931 Valentine earthquake in Ryan Flat/Lobo Valley, had a magnitude of 6.4 and no reported surface rupture. The most active Quaternary faults occur within the 120-km-long Hueco Bolson, the 70-km-long Red Light Bolson, and the > 200-km-long Salt <span class="hlt">Basins</span>/Wild Horse Flat/Lobo Valley/Ryan Flat.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/513494','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/513494"><span>Geoscience/engineering characterization of the interwell environment in carbonate reservoirs based on outcrop analogs, Permian <span class="hlt">Basin</span>, <span class="hlt">West</span> Texas and New Mexico--waterflood performance analysis for the South Cowden Grayburg Reservoir, Ector County, Texas. Final report</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Jennings, J.W. Jr.</p> <p>1997-05-01</p> <p>A reservoir engineering study was conducted of waterflood performance in the South Cowden field, an Upper Permian Grayburg reservoir on the Central <span class="hlt">Basin</span> Platform in <span class="hlt">West</span> Texas. The study was undertaken to understand the historically poor waterflood performance, evaluate three techniques for incorporating petrophysical measurements and geological interpretation into heterogeneous reservoir models, and identify issues in heterogeneity modeling and fluid-flow scaleup that require further research. The approach included analysis of relative permeability data, analysis of injection and production data, heterogeneity modeling, and waterflood simulation. The poor South Cowden waterflood recovery is due, in part, to completion of wells in only the top half of the formation. Recompletion of wells through the entire formation is estimated to improve recovery in ten years by 6 percent of the original oil in place in some areas of the field. A direct three-dimensional stochastic approach to heterogeneity modeling produced the best fit to waterflood performance and injectivity, but a more conventional model based on smooth mapping of layer-averaged properties was almost as good. The results reaffirm the importance of large-scale heterogeneities in waterflood modeling but demonstrate only a slight advantage for stochastic modeling at this scale. All the flow simulations required a reduction to the measured whole-core k{sub v}/k{sub h} to explain waterflood behavior, suggesting the presence of barriers to vertical flow not explicitly accounted for in any of the heterogeneity models. They also required modifications to the measured steady-state relative permeabilities, suggesting the importance of small-scale heterogeneities and scaleup. Vertical flow barriers, small-scale heterogeneity modeling, and relative permeability scaleup require additional research for waterflood performance prediction in reservoirs like South Cowden.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2009AGUFM.B21D..06L','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2009AGUFM.B21D..06L"><span>Dissolved Organic Carbon Distribution in Two Hydrothermal Systems - <span class="hlt">West</span> Mata, NE Lau <span class="hlt">Basin</span> during an eruption event and basement fluids from sediment-buried Juan de Fuca Ridge flanks</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Lin, H.; Cowen, J. P.; Butterfield, D. A.; Embley, R. W.; Resing, J.</p> <p>2009-12-01</p> <p>Hydrothermal systems have profound influence in regulating seawater chemistry. However, the extent hydrothermal systems have impact on deep ocean DOC remains unclear. This study will provide data on dissolved organic carbon distribution in two very different hydrothermal systems. The first is hydrothermal fluids produced from a near-arc volcano in Northeast Lau <span class="hlt">Basin</span>. Samples were collected with the Butterfield fluid sampler during an eruption event at <span class="hlt">West</span> Mata during May 2009. The eruption event allowed collection of fluids from both new and established vents, high temperature focused and low temperature diffused vents. This unique opportunity should shed light on DOC changes in nascent hydrothermal systems in accordance with early microbiological community succession. The second hydrothermal environment is a 3.5 Myr-sediment-covered basement aquifer located on the east flank of Juan de Fuca Ridge. Basement Fluids were collected from basement ~280 mbsf (~20 m below sediment-basement interface) using 0.25” stainless steal fluid delivery lines of the Circulation Obviating Retrofit Kit (CORK) observatories at Ocean Drilling program borehole 1301A; samples were drawn up the FDL by a new clean pumping system (Mobile Pump Valve Unit or MPVU) and collected in an acid-cleaned 60-L Large Volume Bag Sampler (LVBS). Due to the effective hydraulic barrier of the 260 m thick of sediment over-lying the basement at this site, the basement fluid here does not readily exchange with bottom seawater. In contrast to vent fluid in Lau vent field, the basement fluid has been circulating in the basement, on average, several thousand years. DOC data will be presented from these hydrothermal fluids and discussed with respect to the DOC cycle in the deep ocean.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/6327476','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/6327476"><span>South American sedimentary <span class="hlt">basins</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Urien, C.M.</p> <p>1984-04-01</p> <p>More than 64 sedimentary <span class="hlt">basins</span> have been identified on the South American continent. According to their regional structural character and tectonic setting, they are classified in 4 super groups. About 20 interior or intracratonic <span class="hlt">basins</span> occur on South American cratons (Guayanas, Brazilian, and Patagonian). In most cases, their sedimentary fill is Paleozoic or early Mesozoic. Rift or transverse grabens resulting from incipient sea floor spreading extend towards the continental margin. Seventeen <span class="hlt">basins</span> are located along the Atlantic stable margin, and consist primarily of half grabens with downfaulted seaward blocks. These rifts (or pull-apart <span class="hlt">basins</span>) were separated as results of the migration of the African and American continental blocks. Therefore the sedimentation is chiefly Cretaceous and Tertiary. On the western edge of South American cratons, almost 20 <span class="hlt">basins</span> of downwarped blocks extend from Orinoco down to the Malvinas plateau in a relatively uninterrupted chain of retroarc <span class="hlt">basins</span>, bordered by the Andean orogen. They lie on a flexured Precambrian and Paleozoic basement, and are highly deformed in the <span class="hlt">west</span> (Subandean belt) due to the action of compressional forces caused by the tectonic influence of the Mesozoic Andean batholith. Westward, the Pacific margin is bordered by 27 foreland and forearc <span class="hlt">basins</span>, which alternate from north to south on an unstable or quasistable margin, fringed by a trench and slope complex where the ocean crust is subducted beneath the continental plate.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/20790829','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/20790829"><span>Assessment of undiscovered carboniferous coal-bed gas resources of the Appalachian <span class="hlt">Basin</span> and Black Warrior <span class="hlt">Basin</span> Provinces, 2002</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Milici, R.C.; Hatch, J.R.</p> <p>2004-09-15</p> <p>Coalbed methane (CBM) occurs in coal beds of Mississippian and Pennsylvanian (Carboniferous) age in the Appalachian <span class="hlt">basin</span>, which extends almost continuously from New York to Alabama. In general, the <span class="hlt">basin</span> includes three structural subbasins: the Dunkard <span class="hlt">basin</span> in Pennsylvania, Ohio, and northern <span class="hlt">West</span> Virginia; the Pocahontas <span class="hlt">basin</span> in southern <span class="hlt">West</span> Virginia, eastern Kentucky, and southwestern Virginia; and the Black Warrior <span class="hlt">basin</span> in Alabama and Mississippi. For assessment purposes, the Appalachian <span class="hlt">basin</span> was divided into two assessment provinces: the Appalachian <span class="hlt">Basin</span> Province from New York to Alabama, and the Black Warrior <span class="hlt">Basin</span> Province in Alabama and Mississippi. By far, most of the coalbed methane produced in the entire Appalachian <span class="hlt">basin</span> has come from the Black Warrior <span class="hlt">Basin</span> Province. 8 refs., 1 fig., 1 tab.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/sim/2007/2995/','USGSPUBS'); return false;" href="https://pubs.usgs.gov/sim/2007/2995/"><span>Altitude and Configuration of the Potentiometric Surface in the Upper White Clay Creek and Lower <span class="hlt">West</span> Branch Brandywine Creek <span class="hlt">Basins</span> including Portions of Penn, London Grove, New Garden, Londonderry, <span class="hlt">West</span> Marlborough, Highland, and East Fallowfield Townships and <span class="hlt">West</span> Grove, Avondale, Modena, and South Coatesville boroughs, Chester County, Pennsylvania, May through July 2006</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Hale, Lindsay B.</p> <p>2007-01-01</p> <p>INTRODUCTION Since 1984, the U.S. Geological Survey (USGS) has been mapping the altitude and configuration of the potentiometric surface in Chester County as part of an ongoing cooperative program to measure and describe the water resources of the county. These maps can be used to determine the general direction of ground-water flow and are frequently referenced by municipalities and developers to evaluate ground-water conditions for water supply and resource-protection requirements. For this study, the potentiometric surface was mapped for an area in south-central Chester County. The northern part of the map includes portions of Highland, East Fallowfield, Londonderry, and <span class="hlt">West</span> Marlborough Townships and South Coatesville and Modena Boroughs. The southern part of the map includes portions of Londonderry, <span class="hlt">West</span> Marlborough, Penn, London Grove, and New Garden Townships and <span class="hlt">West</span> Grove and Avondale Boroughs. The study area is mostly underlain by metamorphic rocks of the Glenarm Supergroup including Peters Creek Schist, Octoraro Phyllite, Wissahickon Schist, Cockeysville Mrable, and Setters Quartzite; and by pegmatite, mafic gneiss, felsic gneiss, and diabase. Ground water is obtained from these bedrock formations by wells that intercept fractures. The altitude and configuration of the potentiometric surface was contoured from water levels measured on different dates in available wells during May through July 2006 and from the altitude of springs and perennial streams. Topography was used as a guide for contouring so that the altitude of the potentiometric surface was inferred nowhere to be higher than the land surface. The potentiometric surface shown on this map is an approximation of the water table. The altitude of the actual potentiometric surface may differ from the water table, especially in areas where wells are completed in a semi-confined zone or have long open intervals that reflect the composite hydraulic head of multiple water-yielding fractures. A composite</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('//www.loc.gov/pictures/collection/hh/item/nd0028.photos.103246p/','SCIGOV-HHH'); return false;" href="//www.loc.gov/pictures/collection/hh/item/nd0028.photos.103246p/"><span>2. VIEW OF POND B, LOOKING NORTHEAST FROM THE <span class="hlt">WEST</span> ...</span></a></p> <p><a target="_blank" href="http://www.loc.gov/pictures/collection/hh/">Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey</a></p> <p></p> <p></p> <p>2. VIEW OF POND B, LOOKING NORTHEAST FROM THE <span class="hlt">WEST</span> SIDE OF THE SOURIS RIVER VALLEY, DUE SOUTH OF THE LOOKOUT TOWER - Upper Souris National Wildlife Refuge Dams, Souris River <span class="hlt">Basin</span>, Foxholm, Surrey (England), ND</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('//www.loc.gov/pictures/collection/hh/item/ca1724.photos.010861p/','SCIGOV-HHH'); return false;" href="//www.loc.gov/pictures/collection/hh/item/ca1724.photos.010861p/"><span>6. GENERAL WIDE VIEW SHOWING EAST (SOUTHEAST) SIDE, LOOKING <span class="hlt">WEST</span> ...</span></a></p> <p><a target="_blank" href="http://www.loc.gov/pictures/collection/hh/">Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey</a></p> <p></p> <p></p> <p>6. GENERAL WIDE VIEW SHOWING EAST (SOUTHEAST) SIDE, LOOKING <span class="hlt">WEST</span> ACROSS TURNING <span class="hlt">BASIN</span>; FREIGHTER LOADING IN FOREGROUND - Oakland Army Base, Transit Shed, East of Dunkirk Street & South of Burma Road, Oakland, Alameda County, CA</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=romance+AND+genre&pg=4&id=ED058712','ERIC'); return false;" href="http://eric.ed.gov/?q=romance+AND+genre&pg=4&id=ED058712"><span>Horizons <span class="hlt">West</span>.</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Kitses, Jim</p> <p></p> <p>The western is the most popular and enduring of Hollywood forms. It is one embodiment of a traditional theme in American culture: the <span class="hlt">West</span> as both Garden of natural dignity and innocence and also as treacherous Desert resisting the gradual sweep of agrarian progress and community values. Westerns have in common: a) history, America's past; b)…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/798140','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/798140"><span>Integrated Worker Radiation Dose Assessment for the K <span class="hlt">Basins</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>NELSON, J.V.</p> <p>1999-10-27</p> <p>This report documents an assessment of the radiation dose workers at the K <span class="hlt">Basins</span> are expected to receive in the process of removing spent nuclear fuel from the storage <span class="hlt">basins</span>. The K <span class="hlt">Basins</span> (K East and K <span class="hlt">West</span>) are located in the Hanford 100K Area.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/5739897','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/5739897"><span>Mississippian facies relationships, eastern Anadarko <span class="hlt">basin</span>, Oklahoma</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Peace, H.W. ); Forgotson, J.M. )</p> <p>1991-08-01</p> <p>Mississippian strata in the eastern Anadarko <span class="hlt">basin</span> record a gradual deepening of the <span class="hlt">basin</span>. Late and post-Mississippian tectonism (Wichita and Arbuckle orogenies) fragmented the single large <span class="hlt">basin</span> into the series of paired <span class="hlt">basins</span> and uplifts recognized in the southern half of Oklahoma today. Lower Mississippian isopach and facies trends (Sycamore and Caney Formations) indicate that <span class="hlt">basinal</span> strike in the study area (southeastern Anadarko <span class="hlt">basin</span>) was predominantly east-<span class="hlt">west</span>. Depositional environment interpretations made for Lower Mississippian strata suggest that the <span class="hlt">basin</span> was partially sediment starved and exhibited a low shelf-to-<span class="hlt">basin</span> gradient. Upper Mississippian isopach and facies trends suggest that <span class="hlt">basinal</span> strike within the study area shifted from dominantly east-<span class="hlt">west</span> to dominantly northwest-southeast due to Late Mississippian and Early Pennsylvanian uplift along the Nemaha ridge. Within the study area, the Chester Formation, composed of gray to dove-gray shales with interbedded limestones deposited on a carbonate shelf, thins depositionally into the <span class="hlt">basin</span> and is thinnest at its facies boundary with the Springer Group and the upper portion of the Caney Formation. As <span class="hlt">basin</span> subsidence rates accelerated, the southern edge of the Chester carbonate shelf was progressively drowned, causing a backstepping of the Chester Formation calcareous shale and carbonate facies. Springer Group sands and black shales transgressed northward over the drowned Chester Formation shelf.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('//www.loc.gov/pictures/collection/hh/item/ny2021.photos.385119p/','SCIGOV-HHH'); return false;" href="//www.loc.gov/pictures/collection/hh/item/ny2021.photos.385119p/"><span>79th Street Rotunda, former fountain in foreground, now Boat <span class="hlt">Basin</span> ...</span></a></p> <p><a target="_blank" href="http://www.loc.gov/pictures/collection/hh/">Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey</a></p> <p></p> <p></p> <p>79th Street Rotunda, former fountain in foreground, now Boat <span class="hlt">Basin</span> Cafe, looking <span class="hlt">west</span>. - Henry Hudson Parkway, Extending 11.2 miles from <span class="hlt">West</span> 72nd Street to Bronx-Westchester border, New York County, NY</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/5968295','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/5968295"><span>Seismic exploration in Raton <span class="hlt">basin</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Applegate, J.K.; Rose, P.R.</p> <p>1985-05-01</p> <p>Exploration in the Raton <span class="hlt">basin</span> has delineated complex mountain-front structure in the asymmetric <span class="hlt">basin</span>, and defined possible <span class="hlt">basin</span>-centered gas. Exploration has included subsurface and surface geology, remote sensing, and seismic reflection. The Raton <span class="hlt">basin</span> is a north-south-trending structural <span class="hlt">basin</span> straddling the Colorado-New Mexico boundary. It is bounded on the <span class="hlt">west</span> by the Sangre de Cristo Mountains, on the north and northeast by the Wet Mountains and Apishapa arch, and the Sierra Grande uplift on the south and southeast. The <span class="hlt">basin</span> is asymmetric with transcurrent faulting and thrusting associated with the steeper western flank of the <span class="hlt">basin</span>. Rocks range from Devonian-Mississippian overlying Precambrian basement to Miocene volcanics associated with the Spanish Peaks. Principal targets include the Entrada, Dakota, Codell, and Trinidad Sandstones and the Purgatoire and Raton Formations. Seismic data include explosive and Vibroseis data. Data quality is good in the <span class="hlt">basin</span> center and is fair in the thrusted areas. Correlations are difficult from line to line. However, a strike line in the disturbed area would probably be more disrupted by out-of-the-plane reflections than the dip lines would be. Significant stratigraphic changes are seen in both the Trinidad and Dakota intervals. Integrated seismic and geological studies are keys to exploration in the <span class="hlt">basin</span>. Subsequent work will rely heavily on improved seismic information.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/6729658','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/6729658"><span>Nam Con Son <span class="hlt">Basin</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Tin, N.T.; Ty, N.D.; Hung, L.T.</p> <p>1994-07-01</p> <p>The Nam Con Son <span class="hlt">basin</span> is the largest oil and gas bearing <span class="hlt">basin</span> in Vietnam, and has a number of producing fields. The history of studies in the <span class="hlt">basin</span> can be divided into four periods: Pre-1975, 1976-1980, 1981-1989, and 1990-present. A number of oil companies have carried out geological and geophysical studies and conducted drilling activities in the <span class="hlt">basin</span>. These include ONGC, Enterprise Oil, BP, Shell, Petro-Canada, IPL, Lasmo, etc. Pre-Tertiary formations comprise quartz diorites, granodiorites, and metamorphic rocks of Mesozoic age. Cenozoic rocks include those of the Cau Formation (Oligocene and older), Dua Formation (lower Miocene), Thong-Mang Cau Formation (middle Miocene), Nam Con Son Formation (upper Miocene) and Bien Dong Formation (Pliocene-Quaternary). The basement is composed of pre-Cenozoic formations. Three fault systems are evident in the <span class="hlt">basin</span>: north-south fault system, northeast-southwest fault system, and east-<span class="hlt">west</span> fault system. Four tectonic zones can also be distinguished: western differentiated zone, northern differentiated zone, Dua-Natuna high zone, and eastern trough zone.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://ntrs.nasa.gov/search.jsp?R=GL-2002-001605&hterms=Morocco+western+Sahara&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D20%26Ntt%3DMorocco%2Bwestern%2BSahara','NASA-TRS'); return false;" href="https://ntrs.nasa.gov/search.jsp?R=GL-2002-001605&hterms=Morocco+western+Sahara&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D20%26Ntt%3DMorocco%2Bwestern%2BSahara"><span><span class="hlt">West</span> Africa</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p></p> <p>2002-01-01</p> <p>With its vast expanses of sand, framed by mountain ranges and exposed rock, northwestern Africa makes a pretty picture when viewed from above. This image was acquired by the Moderate-resolution Imaging Spectroradiometer (MODIS), flying aboard NASA's Terra spacecraft. The Canary Islands can be seen on the left side of the image just off Africa's Atlantic shore. The light brown expanse running through the northern two thirds of the image is the Sahara Desert. The desert runs up against the dark brown Haut Atlas mountain range of Morocco in the northwest, the Atlantic Ocean to the <span class="hlt">west</span> and the semi-arid (light brown pixels) Sahelian region in the South. The Sahara, however, isn't staying put. Since the 1960s, the desert has been expanding into the Sahelian region at a rate of up to 6 kilometers per year. In the 1980s this desert expansion, combined with over cultivation of the Sahel, caused a major famine across <span class="hlt">west</span> Africa. Over the summer months, strong winds pick up sands from the Sahara and blow them across the Atlantic as far <span class="hlt">west</span> as North America, causing air pollution in Miami and damaging coral reefs in the Bahamas and the Florida Keys. The white outlines on the map represent country borders. Starting at the top-most portion of the map and working clockwise, the countries shown are Morocco, Western Sahara, Mauritania, Senegal, Mali, Burkina Fasso, Nigeria, Mali (again), and Algeria. Image by Reto Stockli, Robert Simmon, and Brian Montgomery, NASA Earth Observatory, based on data from MODIS</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/513495','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/513495"><span>Geoscience/engineering characterization of the interwell environment in carbonate reservoirs based on outcrop analogs, Permian <span class="hlt">Basin</span>, <span class="hlt">West</span> Texas and New Mexico-stratigraphic hierarchy and cycle stacking facies distribution, and interwell-scale heterogeneity: Grayburg Formation, New Mexico. Final report</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Barnaby, R.J.; Ward, W.B.; Jennings, J.W. Jr.</p> <p>1997-06-01</p> <p>The Grayburg Formation (middle Guadalupian) is a major producing interval in the Permian <span class="hlt">Basin</span> and has yielded more than 2.5 billion barrels of oil in <span class="hlt">West</span> Texas. Grayburg reservoirs have produced, on average, less than 30 percent of their original oil in place and are undergoing secondary and tertiary recovery. Efficient design of such enhanced recovery programs dictates improved geological models to better understand and predict reservoir heterogeneity imposed by depositional and diagenetic controls. The Grayburg records mixed carbonate-siliciclastic sedimentation on shallow-water platforms that rimmed the Delaware and Midland <span class="hlt">Basins</span>. Grayburg outcrops in the Guadalupe and Brokeoff Mountains region on the northwest margin of the Delaware <span class="hlt">Basin</span> present an opportunity to construct a detailed, three-dimensional image of the stratigraphic and facies architecture. This model can be applied towards improved description and characterization of heterogeneity in analogous Grayburg reservoirs. Four orders of stratigraphic hierarchy are recognized in the Grayburg Formation. The Grayburg represents a long-term composite sequence composed of four high-frequency sequences (HFS 1-4). Each HFS contains several composite cycles comprising two or more cycles that define intermediate-scale transgressive-regressive successions. Cycles are the smallest scale upward-shoaling vertical facies successions that can be recognized and correlated across various facies tracts. Cycles thus form the basis for establishing the detailed chronostratigraphic correlations needed to delineate facies heterogeneity.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/of/1999/0050q/report.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/of/1999/0050q/report.pdf"><span>Petroleum system of the Gippsland <span class="hlt">Basin</span>, Australia</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Bishop, Michele G.</p> <p>2000-01-01</p> <p>The Gippsland <span class="hlt">Basin</span> Province 3930, located on the southeastern coast of Australia, is formed from two successive failed rifts that developed into a passive margin during the Cretaceous. Formation of this <span class="hlt">basin</span> is related to the break up of Gondwana, which resulted in the separation of Antarctica from Australia, and the separation of the New Zealand and Lord Howe Rise continental crust from Australia. Coals and coaly shales of Late Cretaceous through Eocene age are the source rocks for oil and gas that accumulated predominantly in anticlinal traps. The <span class="hlt">basin</span> was Australia?s major producing <span class="hlt">basin</span> until 1996 when daily oil/condensate production from the North <span class="hlt">West</span> Shelf surpassed it.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70015996','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70015996"><span>Geology and K-Ar geochronology of the Paradise Peak Mine and the relationship of pre-<span class="hlt">Basin</span> and Range extension to Early Miocene precious metal mineralization in <span class="hlt">west</span>-central Nevada</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>John, D.A.; Thomason, R.E.; McKee, E.H.</p> <p>1989-01-01</p> <p>The Paradise Peak mine is a major gold-silver-mercury deposit located in the southwestern part of the Paradise Range near the eastern edge of the Walker Lane in the western Great <span class="hlt">Basin</span>, Nevada. Regional stratigraphic relations and K-Ar ages indicate that volcanism changed from silicic ash-flow tuffs to intermediate lavas at about 20 to 19 Ma. Regionally extensive angular unconformities indicate that a period of "pre-<span class="hlt">Basin</span> and Range' crustal extension occurred between about 22 to 19 Ma. This extension was penecontemporaneous with the shift in the style of volcanism and with gold-silver mineralization in the Paradise Peak mine and in the Goldfield and Tonopah districts of western Nevada. The close temporal and spatial relationships of precious metal mineralization with pre-<span class="hlt">Basin</span> and Range extension suggest that extension was a major factor in the genesis of early Miocene precious metal deposits in the western Great <span class="hlt">Basin</span>. -from Authors</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_14");'>14</a></li> <li><a href="#" onclick='return showDiv("page_15");'>15</a></li> <li class="active"><span>16</span></li> <li><a href="#" onclick='return showDiv("page_17");'>17</a></li> <li><a href="#" onclick='return showDiv("page_18");'>18</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_16 --> <div id="page_17" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_15");'>15</a></li> <li><a href="#" onclick='return showDiv("page_16");'>16</a></li> <li class="active"><span>17</span></li> <li><a href="#" onclick='return showDiv("page_18");'>18</a></li> <li><a href="#" onclick='return showDiv("page_19");'>19</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="321"> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/465139','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/465139"><span>Australia`s southeastern Bonaparte <span class="hlt">basin</span> has plenty of potential</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Miyazaki, S.</p> <p>1997-04-21</p> <p>Situated in the Timor Sea and Joseph Bonaparte Gulf regions, the Bonaparte <span class="hlt">basin</span> is one of the Phanerozoic <span class="hlt">basins</span> of what is now called the North <span class="hlt">West</span> Shelf of Australia. This <span class="hlt">basin</span> consists of a number of Paleozoic and Mesozoic synclines and horsts. Drilling success rate for this <span class="hlt">basin</span> is one of the highest in Australia in the last 5 years. New opportunities are available in the southeastern Bonaparte <span class="hlt">basin</span>, where seven vacant tracts have just been released for application for exploration permits. The paper discusses the regional geology, previous exploration activities, and potentials of the southern Petrel sub-<span class="hlt">basin</span> and Darwin shelf.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/5771285','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/5771285"><span><span class="hlt">Basin</span> development and petroleum potential of offshore Otway <span class="hlt">basin</span>, Australia</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Williamson, P.E.; O'Brien, G.W.; Swift, M.G.; Scherl, A.S.; Marlow, M.S.; Exon, N.F.; Falvey, D.A.; Lock, J.; Lockwood, K.</p> <p>1987-05-01</p> <p>The Bass Strait region in southeastern Australia contains three sedimentary <span class="hlt">basins</span>, which are, from east to <span class="hlt">west</span>, the Gippsland, Bass, and Otway <span class="hlt">basins</span>. The offshore Gippsland <span class="hlt">basin</span> is Australia's most prolific petroleum-producing province and supplies over 90% of the country's production. In contrast, exploration has been unsuccessful in the offshore portion of the Otway <span class="hlt">basin</span>; 17 wells have been drilled, and although shows of oil and gas have been common, no commercial discoveries have been made. Many of these wells, drilled in the 1960s and 1970s, were sited using poor-quality seismic data and, as a consequence, were frequently off structure. Seismic data quality has, however, improved significantly in recent years. The present study by the Australian Bureau of Mineral Resources (BMR) involved the collection, in the offshore Otway <span class="hlt">basin</span>, of 3700 km of high-quality, 48-channel seismic reflection data by the BMR research vessel R/V Rig Seismic. These data have been integrated with existing industry seismic data, well data, limited dredged material, and geohistory analyses in a framework study of <span class="hlt">basin</span> development and hydrocarbon potential in this under-explored area. The offshore Otway <span class="hlt">basin</span> extends 500 km along the southern coastline and is typically 50 km wide in water depths of less than 200 m. It contains up to 10 km of predominantly late Mesozoic to early Cenozoic sediments, which are overlain by a thin sequence of middle to late Tertiary shelf carbonates. It has been divided into three main structural elements: the Mussel Platform in the east, the central Voluta Trough, and the Crayfish Platform in the <span class="hlt">west</span>. The <span class="hlt">basin</span> was initiated at the end of the Jurassic as part of the Bassian rift. Up to 6 km of Lower Cretaceous sediments were deposited prior to breakup at the end of the Early Cretaceous and the onset of sea-floor spreading between Australia and Antarctica.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/6639355','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/6639355"><span>Cenozoic evolution of San Joaquin <span class="hlt">basin</span>, California</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Bartow, J.A.</p> <p>1988-03-01</p> <p>The Neogene San Joaquin <span class="hlt">basin</span> in the southern part of the 700-km long Great Valley of California is a successor to a late Mesozoic and earliest Tertiary forearc <span class="hlt">basin</span>. The transition from forearc <span class="hlt">basin</span> to the more restricted Neogene marine <span class="hlt">basin</span> occurred principally during the Paleogene as the plate tectonic setting changed from oblique convergence to normal convergence, and finally to the initiation of tangential (transform) movement near the end of the Oligocene. Regional-scale tectonic events that affected the <span class="hlt">basin</span> include: (1) clockwise rotation of the southernmost Sierra Nevada, and large-scale en echelon folding in the southern Diablo Range, both perhaps related to Late Cretaceous and early Tertiary right slip on the proto-San-Andreas fault; (2) regional uplift of southern California in the Oligocene that resulted from the subduction of the Pacific-Farallon spreading ridge: (3) extensional tectonism in the <span class="hlt">Basin</span> and Range province, particularly in the Miocene; (4) wrench tectonism adjacent to the San Andreas fault in the Neogene; (5) northeastward emplacement of a wedge of the Franciscan complex at the <span class="hlt">west</span> side of the Sierran block, with associated deep-seated thrusting in the late Cenozoic; and (6) the accelerated uplift of the Sierra Nevada beginning in the late Miocene. Neogene <span class="hlt">basin</span> history was controlled principally by the tectonic effects of the northwestward migration of the Mendocino triple junction along the California continental margin and by the subsequent wrench tectonism associated with the San Andreas fault system. East-<span class="hlt">west</span> compression in the <span class="hlt">basin</span>, resulting from extension in the <span class="hlt">Basin</span> and Range province was an important contributing factor to crustal shortening at the <span class="hlt">west</span> side of the valley. Analysis of the sedimentary history of the <span class="hlt">basin</span>, which was controlled to some extent by eustatic sea level change, enables reconstruction of the <span class="hlt">basin</span> paleogeography through the Cenozoic.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/6829195','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/6829195"><span>Late Paleozoic structural evolution of Permian <span class="hlt">basin</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Ewing, T.E.</p> <p>1984-04-01</p> <p>The southern Permian <span class="hlt">basin</span> is underlain by the NNW-trending Central <span class="hlt">Basin</span> disturbed belt of Wolfcamp age (Lower Permian), the deep Delaware <span class="hlt">basin</span> to its <span class="hlt">west</span>, and the shallower Midland <span class="hlt">basin</span> to its eat. The disturbed belt is highly segmented with zones of left-lateral offset. Major segments from south to north are: the Puckett-Grey Ranch zone; the Fort Stockton uplift; the Monahans transverse zone; the Andector ridges and the Eunice ridge; the Hobbs transverse zone; and the Tatum ridges, which abut the broad Roosevelt uplift to the north. The disturbed belt may have originated along rift zones of either Precambrian or Cambrian age. The extent of Lower and Middle Pennsylvanian deformation is unclear; much of the Val Verde <span class="hlt">basin</span>-Ozona arch structure may have formed then. The main Wolfcamp deformation over thrust the <span class="hlt">West</span> Texas crustal block against the Delaware block, with local denudation of the uplifted edge and eastward-directed backthrusting into the Midland <span class="hlt">basin</span>. Latter in the Permian, the area was the center of a subcontinental bowl of subsidence - the Permian <span class="hlt">basin</span> proper. The disturbed belt formed a pedestal for the carbonate accumulations which created the Central <span class="hlt">Basin</span> platform. The major pre-Permian reservoirs of the Permian <span class="hlt">basin</span> lie in large structural and unconformity-bounded traps on uplift ridges and domes. Further work on the regional structural style may help to predict fracture trends, to assess the timing of oil migration, and to evaluate intrareservoir variations in the overlying Permian giant oil fields.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/6065881','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/6065881"><span>Gladden Pull-Apart <span class="hlt">Basin</span>, offshore Belize</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Morrice, S. )</p> <p>1993-02-01</p> <p>The junction of the American and Caribbean plates in Belize has created a complex structural setting for oil and gas exploration. Recent seismic offshore Belize has been used to identify three structural provinces, from <span class="hlt">west</span> to east: a shallow thrust zone, a narrow upthrown wrench faulted zone and a deeper extensional <span class="hlt">basin</span>, named the Gladden Pull-Apart <span class="hlt">Basin</span>. Hydrocarbon leakage from recent fault movement appears to have depleted the shallow structures to the <span class="hlt">west</span>, but the pull-apart <span class="hlt">basin</span> has a thick sequence of low-frequency clay-dominated sealing rocks with the potential to preserve hydrocarbon accumulations in Cretaceous carbonate banks. These buried carbonate are of the same age and depositional environment of Mexico's Golden Lane/Tabasco Reforma carbonate banks which are world class giant fields. The Belize and Mexican carbonate banks are within the same Cretaceous depositional <span class="hlt">basin</span>, the Peten <span class="hlt">Basin</span>. Seismic interpretations in offshore Belize have been integrated with gravity and magnetic surveys. This provides additional support for the deep extensional <span class="hlt">basin</span>. The location of the thick Cretaceous carbonate banks is better interpreted with the integration of these three geophysical tools. Airborne geochemical surveys were used to detect the presence of oil seeps on the east and <span class="hlt">west</span> <span class="hlt">basin</span> margins.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('//www.loc.gov/pictures/collection/hh/item/ca1661.photos.011841p/','SCIGOV-HHH'); return false;" href="//www.loc.gov/pictures/collection/hh/item/ca1661.photos.011841p/"><span>29. CIRCULAR WASH <span class="hlt">BASIN</span>, TOILETS ABOVE ROOF PANEL STORAGE AREA. ...</span></a></p> <p><a target="_blank" href="http://www.loc.gov/pictures/collection/hh/">Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey</a></p> <p></p> <p></p> <p>29. CIRCULAR WASH <span class="hlt">BASIN</span>, TOILETS ABOVE ROOF PANEL STORAGE AREA. VIEW TO <span class="hlt">WEST</span>-NORTHWEST. - Ford Motor Company Long Beach Assembly Plant, Assembly Building, 700 Henry Ford Avenue, Long Beach, Los Angeles County, CA</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('//www.loc.gov/pictures/collection/hh/item/wa0374.photos.370103p/','SCIGOV-HHH'); return false;" href="//www.loc.gov/pictures/collection/hh/item/wa0374.photos.370103p/"><span>36. View of Wolslegal <span class="hlt">Basin</span> from State Route 410 bridge, ...</span></a></p> <p><a target="_blank" href="http://www.loc.gov/pictures/collection/hh/">Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey</a></p> <p></p> <p></p> <p>36. View of Wolslegal <span class="hlt">Basin</span> from State Route 410 bridge, looking <span class="hlt">west</span>. Photo by Brian C. Morris, Puget Power, 1989. - Puget Sound Power & Light Company, White River Hydroelectric Project, 600 North River Avenue, Dieringer, Pierce County, WA</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('//www.loc.gov/pictures/collection/hh/item/wa0374.photos.370128p/','SCIGOV-HHH'); return false;" href="//www.loc.gov/pictures/collection/hh/item/wa0374.photos.370128p/"><span>61. View of bellmouth which empties into Printz <span class="hlt">Basin</span>, looking ...</span></a></p> <p><a target="_blank" href="http://www.loc.gov/pictures/collection/hh/">Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey</a></p> <p></p> <p></p> <p>61. View of bellmouth which empties into Printz <span class="hlt">Basin</span>, looking <span class="hlt">west</span>. Photo by Robin Lee Tedder, Puget Power, 1989. - Puget Sound Power & Light Company, White River Hydroelectric Project, 600 North River Avenue, Dieringer, Pierce County, WA</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/fs/2005/3004/fs20053004.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/fs/2005/3004/fs20053004.pdf"><span>Biological science in the Great <span class="hlt">Basin</span></span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>,</p> <p>2005-01-01</p> <p>The Great <span class="hlt">Basin</span> is an expanse of desert and high moun-tains situated between the Rocky Mountains and the Sierra Nevada of the western United States. The most explicit description of the Great <span class="hlt">Basin</span> is that area in the <span class="hlt">West</span> where surface waters drain inland. In other words, the Great <span class="hlt">Basin</span> is comprised of many separate drainage areas - each with no outlet. What at first glance may appear as only a barren landscape, the Great <span class="hlt">Basin</span> upon closer inspection reveals island mountains, sagebrush seas, and intermittent aquatic habitats, all teeming with an incredible number and variety of plants and animals. Biologists at the USGS are studying many different species and ecosystems in the Great <span class="hlt">Basin</span> in order to provide information about this landscape for policy and land-management decision-making. The following stories represent a few of the many projects the USGS is conducting in the Great <span class="hlt">Basin</span>.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/pp/1708/d2/pdf/pp1708_d2.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/pp/1708/d2/pdf/pp1708_d2.pdf"><span>Correlation chart of Pennsylvanian rocks in Alabama, Tennessee, Kentucky, Virginia, <span class="hlt">West</span> Virginia, Ohio, Maryland, and Pennsylvania showing approximate position of coal beds, coal zones, and key stratigraphic units: Chapter D.2 in Coal and petroleum resources in the Appalachian <span class="hlt">basin</span>: distribution, geologic framework, and geochemical character</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Ruppert, Leslie F.; Trippi, Michael H.; Slucher, Ernie R.; Ruppert, Leslie F.; Ryder, Robert T.</p> <p>2014-01-01</p> <p>Because of the many names used to identify individual coal beds and coal zones in the historic Appalachian <span class="hlt">basin</span> coal-mining districts, coal bed designations may differ even more than stratigraphic nomenclature. In eastern Kentucky, northwest of the Pine Mountain thrust fault on the Cumberland overthrust sheet, for example, coal beds or coal zones equivalent to the Lower Elkhorn coal zone (within the Pikeville Formation) are identified also as the Eagle coal zone, Pond Creek coal zone, and Blue Gem coal bed (fig. 1). Southeast of the Pine Mountain thrust fault, yet still in Kentucky, equivalent coals in this same interval are known as the Imboden and Rich Mountain. Moreover, this same interval of coal is identified as the Blue Gem coal in Tennessee, the Imboden coal bed or Campbell Creek or Pond Creek coal zones in Virginia, and the Eagle coal zone in <span class="hlt">West</span> Virginia.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/5787342','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/5787342"><span>Frontier sedimentary <span class="hlt">basins</span> of New Zealand region</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Beggs, J.M. )</p> <p>1991-03-01</p> <p>Petroleum-prospective <span class="hlt">basins</span> of New Zealand began to form by mid-Cretaceous rifting of crustal elements previously assembled at the Gondwana continental margin. During the latest Cretaceous-early Cenozoic New Zealand separated from Australia and Antarctica by sea-floor spreading. An overall transgression in widely recorded in this post-rift phase, with decreasing clastic sediment supply as land area and relief were reduced. Mid-Cenozoic initiation of the modern plate boundary has resulted in uplift of mountain ranges, subsidence and filling of troughs, progradation of the shelf, and common reactivation or eversion of older structures. Petroleum potential of less explored <span class="hlt">basins</span> can be compared to the productive Taranki <span class="hlt">basin</span>. Source rocks are coal-rich deposits of the rift phase, also developed in Great South, Canterbury/Chatham, Western Southland, <span class="hlt">West</span> Coast, and Northland <span class="hlt">basins</span>. A different source contributes to oil and gas seeps on the East Coast, a continental margin during Late Cretaceous. The main reservoirs of Taranaki are early Cenozoic coastal and fluvial sands, also present in Great South, Canterbury, and <span class="hlt">West</span> Coast and possibly other <span class="hlt">basins</span>. Other Taranaki reservoirs include mid-Cenozoic limestone and Miocene turbidites, which are widespread in most other <span class="hlt">basins</span>. Pliocene limestones have excellent reservoir potential on the East Coast. Late Cenozoic tectonics, essential to trap development and significant for maturation in Taranaki, have created similar structures in <span class="hlt">basins</span> near the plate boundary but are less significant in the development of Great South, eastern Canterbury/Chatham, and Northland <span class="hlt">basins</span>.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/837778','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/837778"><span>RESERVES IN WESTERN <span class="hlt">BASINS</span> PART IV: WIND RIVER <span class="hlt">BASIN</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Robert Caldwell</p> <p>1998-04-01</p> <p>Vast quantities of natural gas are entrapped within various tight formations in the Rocky Mountain area. This report seeks to quantify what proportion of that resource can be considered recoverable under today's technological and economic conditions and discusses factors controlling recovery. The ultimate goal of this project is to encourage development of tight gas reserves by industry through reducing the technical and economic risks of locating, drilling and completing commercial tight gas wells. This report is the fourth in a series and focuses on the Wind River <span class="hlt">Basin</span> located in <span class="hlt">west</span> central Wyoming. The first three reports presented analyses of the tight gas reserves and resources in the Greater Green River <span class="hlt">Basin</span> (Scotia, 1993), Piceance <span class="hlt">Basin</span> (Scotia, 1995) and the Uinta <span class="hlt">Basin</span> (Scotia, 1995). Since each report is a stand-alone document, duplication of language will exist where common aspects are discussed. This study, and the previous three, describe <span class="hlt">basin</span>-centered gas deposits (Masters, 1979) which contain vast quantities of natural gas entrapped in low permeability (tight), overpressured sandstones occupying a central <span class="hlt">basin</span> location. Such deposits are generally continuous and are not conventionally trapped by a structural or stratigraphic seal. Rather, the tight character of the reservoirs prevents rapid migration of the gas, and where rates of gas generation exceed rates of escape, an overpressured <span class="hlt">basin</span>-centered gas deposit results (Spencer, 1987). Since the temperature is a primary controlling factor for the onset and rate of gas generation, these deposits exist in the deeper, central parts of a <span class="hlt">basin</span> where temperatures generally exceed 200 F and drill depths exceed 8,000 feet. The abbreviation OPT (overpressured tight) is used when referring to sandstone reservoirs that comprise the <span class="hlt">basin</span>-centered gas deposit. Because the gas resources trapped in this setting are so large, they represent an important source of future gas supply, prompting studies to</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/6741510','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/6741510"><span>Preliminary geothermal investigations in <span class="hlt">West</span> Virginia</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Hendry, R.; Hilfiker, K.; Hodge, D.; Morgan, P.; Swanberg, C.</p> <p>1981-10-01</p> <p>Deep sedimentary <span class="hlt">basins</span> and warm spring systems are potential geothermal resources in <span class="hlt">West</span> Virginia. A temperature gradient map based on 800 BHT for WV shows that variation of temperature gradients trend NE parallel to regional structure. Highest temperature gradient values of about 28/sup 0/C/km occur in the eastcentral WV and the lowest gradients (18/sup 0/C/km) are found over the Rome trough. Results of groundwater geochemistry indicate that the warm springs circulate in very shallow aquifers and are subject to seasonal temperature fluctuations. Silica heat flow data in WV varies from about .89 to 1.4 HFU and generally increases towards the <span class="hlt">west</span>. Bouguer, magnetic and temperature gradient profiles suggest that an ancient rift transects the State and is the site of several deep sedimentary <span class="hlt">basins</span>.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.dtic.mil/docs/citations/ADA292446','DTIC-ST'); return false;" href="http://www.dtic.mil/docs/citations/ADA292446"><span>Late Quarternary Sedimentation in the Eastern Angola <span class="hlt">Basin</span>.</span></a></p> <p><a target="_blank" href="https://publicaccess.dtic.mil/psm/api/service/search/search">DTIC Science & Technology</a></p> <p></p> <p>1973-11-01</p> <p>Angola diapir field. Illite and montmorillonite are abundant in the southern part of the <span class="hlt">basin</span>, reflecting the source in soils of South <span class="hlt">West</span> Africa and...northward transport in the Benguela Current system. Kaolinite dominates the clay-mineral assemblage in the north-central part of the <span class="hlt">basin</span></p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/7151904','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/7151904"><span>Radiolarian paleo-oceanographic studies of Humboldt <span class="hlt">basin</span> and adjacent areas</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Nelson, C.O.</p> <p>1986-04-01</p> <p>Miocene-Pliocene samples from land-based sections along an east-<span class="hlt">west</span> transect of the Humboldt <span class="hlt">basin</span> were analyzed for microfossil content. The microfossil populations reflect the gradual infilling and shoaling of the <span class="hlt">basin</span>. Radiolarian fauna indicate that initial deposition occurred in a <span class="hlt">basin</span> open to deep marine waters. The shelfal characteristics of the radiolarian populations increase through time in a <span class="hlt">west</span>-east direction. Fauna appear to be sourced from cooler waters of the North Pacific and deep Central Pacific.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/798041','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/798041"><span>K <span class="hlt">basins</span> interim remedial action health and safety plan</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>DAY, P.T.</p> <p>1999-09-14</p> <p>The K <span class="hlt">Basins</span> Interim Remedial Action Health and Safety Plan addresses the requirements of the Comprehensive Environmental Response, Compensation and Liability Act (CERCLA), as they apply to the CERCLA work that will take place at the K East and K <span class="hlt">West</span> <span class="hlt">Basins</span>. The provisions of this plan become effective on the date the US Environmental Protection Agency issues the Record of Decision for the K <span class="hlt">Basins</span> Interim Remedial Action, currently planned in late August 1999.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.gpo.gov/fdsys/pkg/FR-2011-05-04/pdf/2011-10838.pdf','FEDREG'); return false;" href="https://www.gpo.gov/fdsys/pkg/FR-2011-05-04/pdf/2011-10838.pdf"><span>76 FR 25331 - Williston <span class="hlt">Basin</span> Interstate Pipeline Company; Notice of Request Under Blanket Authorization</span></a></p> <p><a target="_blank" href="http://www.gpo.gov/fdsys/browse/collection.action?collectionCode=FR">Federal Register 2010, 2011, 2012, 2013, 2014</a></p> <p></p> <p>2011-05-04</p> <p>... <span class="hlt">Basin</span> Interstate Pipeline Company, 1250 <span class="hlt">West</span> Century Avenue, Bismarck, North Dakota 58503, or telephone... Energy Regulatory Commission Williston <span class="hlt">Basin</span> Interstate Pipeline Company; Notice of Request Under Blanket Authorization Take notice that on April 15, 2011, Williston <span class="hlt">Basin</span> Interstate Pipeline Company (Williston...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.gpo.gov/fdsys/pkg/FR-2011-02-01/pdf/2011-2147.pdf','FEDREG'); return false;" href="https://www.gpo.gov/fdsys/pkg/FR-2011-02-01/pdf/2011-2147.pdf"><span>76 FR 5586 - Williston <span class="hlt">Basin</span> Interstate Pipeline Company; Notice of Request Under Blanket Authorization</span></a></p> <p><a target="_blank" href="http://www.gpo.gov/fdsys/browse/collection.action?collectionCode=FR">Federal Register 2010, 2011, 2012, 2013, 2014</a></p> <p></p> <p>2011-02-01</p> <p>... <span class="hlt">Basin</span> Interstate Pipeline Company, 1250 <span class="hlt">West</span> Century Avenue, Bismarck, North Dakota 58503, (701) 530... Energy Regulatory Commission Williston <span class="hlt">Basin</span> Interstate Pipeline Company; Notice of Request Under Blanket Authorization January 24, 2011. Take notice that on January 19, 2011, Williston <span class="hlt">Basin</span> Interstate...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.gpo.gov/fdsys/pkg/FR-2012-02-21/pdf/2012-3817.pdf','FEDREG'); return false;" href="https://www.gpo.gov/fdsys/pkg/FR-2012-02-21/pdf/2012-3817.pdf"><span>77 FR 9916 - Williston <span class="hlt">Basin</span> Interstate Pipeline Company; Notice of Request Under Blanket Authorization</span></a></p> <p><a target="_blank" href="http://www.gpo.gov/fdsys/browse/collection.action?collectionCode=FR">Federal Register 2010, 2011, 2012, 2013, 2014</a></p> <p></p> <p>2012-02-21</p> <p>... Energy Regulatory Commission Williston <span class="hlt">Basin</span> Interstate Pipeline Company; Notice of Request Under Blanket Authorization Take notice that on February 6, 2012, Williston <span class="hlt">Basin</span> Interstate Pipeline Company (Williston <span class="hlt">Basin</span>), 1250 <span class="hlt">West</span> Century Avenue, Bismarck, North Dakota 58503, filed in Docket No. CP12-57-000, an...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.gpo.gov/fdsys/pkg/FR-2012-06-20/pdf/2012-15036.pdf','FEDREG'); return false;" href="https://www.gpo.gov/fdsys/pkg/FR-2012-06-20/pdf/2012-15036.pdf"><span>77 FR 37036 - Williston <span class="hlt">Basin</span> Interstate Pipeline Company; Notice of Request Under Blanket Authorization</span></a></p> <p><a target="_blank" href="http://www.gpo.gov/fdsys/browse/collection.action?collectionCode=FR">Federal Register 2010, 2011, 2012, 2013, 2014</a></p> <p></p> <p>2012-06-20</p> <p>...] Williston <span class="hlt">Basin</span> Interstate Pipeline Company; Notice of Request Under Blanket Authorization Take notice that on June 4, 2012, Williston <span class="hlt">Basin</span> Interstate Pipeline Company (Wiliston <span class="hlt">Basin</span>), 1250 <span class="hlt">West</span> Century Avenue, Bismark, North Dakota, 58503, filed in Docket No. CP12-472-000, an application pursuant...</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_15");'>15</a></li> <li><a href="#" onclick='return showDiv("page_16");'>16</a></li> <li class="active"><span>17</span></li> <li><a href="#" onclick='return showDiv("page_18");'>18</a></li> <li><a href="#" onclick='return showDiv("page_19");'>19</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_17 --> <div id="page_18" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_16");'>16</a></li> <li><a href="#" onclick='return showDiv("page_17");'>17</a></li> <li class="active"><span>18</span></li> <li><a href="#" onclick='return showDiv("page_19");'>19</a></li> <li><a href="#" onclick='return showDiv("page_20");'>20</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="341"> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2011Tectp.502...38D','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2011Tectp.502...38D"><span>Tectonic classification of Cenozoic Iberian foreland <span class="hlt">basins</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>De Vicente, G.; Cloetingh, S.; Van Wees, J. D.; Cunha, P. P.</p> <p>2011-04-01</p> <p>The Iberian microcontinent stands out because of its intense Alpine intraplate deformation. This is reflected in a large number of Cenozoic <span class="hlt">basins</span> of very different sizes. Most of the contacts between topographic highs and <span class="hlt">basins</span> are thrust or strike-slip faults. All these <span class="hlt">basins</span> seem to have undergone a common sedimentary evolution, comprising four stages: initiation of sedimentation, intense syn-tectonic infilling, change from endorheic to exorheic drainage, and accelerated erosion related to fluvial incision. This simple evolutionary model shows a migration from East to <span class="hlt">West</span>, in which <span class="hlt">basins</span> are still tectonically active at the Atlantic margin of Iberia. This common evolution is also found in a series of geometrical characteristics, such as the ratio r of length of strike-slip fault and length of thrust fault, that are very similar in both types of <span class="hlt">basin</span> border settings. Thrust-related <span class="hlt">basins</span> are mainly associated with segmented pop-downs, whereas the main <span class="hlt">basins</span> have the characteristics of open-ramp <span class="hlt">basins</span>. Strike-slip related <span class="hlt">basins</span> are mostly transpressive structures, although small pull-apart <span class="hlt">basins</span> are usual along the Vilariça and Messejana faults. For <span class="hlt">basin</span> areas larger than 100-1000 km 2, a constant r value of 0.6 is found (including the Ebro, Duero, Madrid, Lower Tagus and Badajoz <span class="hlt">basins</span>). Within the Iberian microcontinent, the total amount of Cenozoic contractional deformation was distributed between strike-slip and thrust faults with an r ratio close to 0.6. However, for small <span class="hlt">basins</span> this parameter seems to depend on the type of fault, range or deformation belt (pure strike-slip, transtension, transpression, and pop-up) independently of its local tectonic development.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('//www.loc.gov/pictures/collection/hh/item/sc1109.photos.203248p/','SCIGOV-HHH'); return false;" href="//www.loc.gov/pictures/collection/hh/item/sc1109.photos.203248p/"><span>7. DETAIL VIEW OF <span class="hlt">WEST</span> SIDE OF <span class="hlt">WEST</span> BRIDGE ABUTMENT ...</span></a></p> <p><a target="_blank" href="http://www.loc.gov/pictures/collection/hh/">Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey</a></p> <p></p> <p></p> <p>7. DETAIL VIEW OF <span class="hlt">WEST</span> SIDE OF <span class="hlt">WEST</span> BRIDGE ABUTMENT AND UNKNOWN STRUCTURE FROM BELOW, FACING NORTHWEST - <span class="hlt">West</span> Branch Bridge, South Carolina Road S-569 spanning <span class="hlt">West</span> Branch of Pacolet River, Pacolet, Spartanburg County, SC</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/101181','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/101181"><span>Geoscience/engineering characterization of the interwell environment in carbonate reservoirs based on outcrop analogs, Permian <span class="hlt">Basin</span>, <span class="hlt">West</span> Texas and New Mexico. Quarterly technical progress report, April 1, 1995--June 1, 1995</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Lucia, F.J.; Kerans, C.</p> <p>1995-09-01</p> <p>The objective of this project is to investigate styles of reservoir heterogeneity that occur in low permeability pelleted wackestone/packstone facies and mixed carbonate/clastic facies found in Permian <span class="hlt">Basin</span> reservoirs by studying similar facies exposed in the Guadalupe mountains. Specific objectives for the outcrop study include construction of a stratigraphic framework, petrophysical quantification of the framework, and testing the outcrop reservoir model for effects of reservoir heterogeneity on production performance. Specific objectives for the subsurface study parallel objectives for the outcrop study. Technical progress is reported for outcrop activities and subsurface activities.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/244562','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/244562"><span>Geoscience/engineering characterization of the interwell environment in carbonate reservoirs based on outcrop analogs, Permian <span class="hlt">Basin</span>, <span class="hlt">West</span> Texas and New Mexico. Quarterly report, January 1--April 30, 1996</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Lucia, F.J.; Kerans, C.</p> <p>1996-04-30</p> <p>The objective of this project is to investigate styles of reservoir heterogeneity found in low-permeability pelleted wackestone/packstone facies and mixed carbonate/clastic facies found in Permian <span class="hlt">Basin</span> reservoirs by studying similar facies exposed in the Guadalupe Mountains. Specific objectives for the outcrop study include construction of a stratigraphic framework, petrophysical quantification of the framework, and testing the outcrop reservoir model for effects of reservoir heterogeneity on production performance. Specific objectives for the subsurface study parallel objectives for the outcrop study.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.epa.gov/exposure-assessment-models/basins-publications','PESTICIDES'); return false;" href="https://www.epa.gov/exposure-assessment-models/basins-publications"><span><span class="hlt">BASINS</span> Publications</span></a></p> <p><a target="_blank" href="http://www.epa.gov/pesticides/search.htm">EPA Pesticide Factsheets</a></p> <p></p> <p></p> <p>Although <span class="hlt">BASINS</span> has been in use for the past 10 years, there has been limited modeling guidance on its applications for complex environmental problems, such as modeling impacts of hydro modification on water quantity and quality.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/7148174','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/7148174"><span>Giant gas field of northern <span class="hlt">West</span> Siberia</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Grace, J.D.; Hart, G.F.</p> <p>1986-06-01</p> <p>The 66 fields discovered since the 1960s in the northern <span class="hlt">West</span> Siberian <span class="hlt">basin</span> contain at least 22 trillion m/sup 3/ (777 tcf) of proved gas, almost one-third of the world's reserves. Half of these fields are giants (> 85 billion m/sup 3/ or 3000 bcf of reserves). These include the largest and second-largest gas fields in the world-Urengoy (8.099 trillion m/sup 3/ or 286 tcf of gas) and Yamburg (4.81 trillion m/sup 3/ or 170 tcf of gas)-as well as most of the other ten largest gas fields in the world. The <span class="hlt">West</span> Siberian <span class="hlt">basin</span> occupies a 3.4-million km/sup 2/ (1.31-million mi/sup 2/) arctic lowland immediately east of the Ural Mountains, extending north under the Kara Sea. It is a composite <span class="hlt">basin</span>, with Mesozoic-Cenozoic <span class="hlt">basin</span> fill on top of a Paleozoic <span class="hlt">basin</span> that overlies a crystalline Archean-Proterozoic framework. The productive zones in the northern <span class="hlt">basin</span> are principally in the Neocomian section (at an average depth of 2800m or 9200 ft) and the Cenomanian section (at an average depth of 2800 m or 9200 ft) and the Cenomanian section (at an average depth of 1100 m or 3600 ft). The former contains reservoirs with gas, condensate, and oil; the latter contains two-thirds of the region's gas. Gas in Cenomanian reservoirs is almost pure methane. Hydrocarbons in Neocomian reservoirs were generated by thermal maturation of sapropelic organic matter contained principally in the Tithonian Bazhenov shale. Methane in the Cenomanian section appears to be a combination of thermogenic gas from the Bazhenov Suite (or deeper) and biogenic gas generated in the Cenomanian section itself, although workers disagree over how much gas came from each source. Continental glaciation during the Pleistocene may have been important in concentrating the methane in Cenomanian reservoirs.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/7041908','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/7041908"><span>Petroleum exploration in Absaroka <span class="hlt">basin</span> of northwestern Wyoming</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Sundell, K.A.</p> <p>1986-08-01</p> <p>A new, virtually unexplored petroleum province with large potential resources can be defined in northwestern Wyoming. Structurally, the Absaroka <span class="hlt">basin</span> is bounded on the north by the Beartooth uplift, to the <span class="hlt">west</span> by the Gallatin and Washakie uplifts, to the south by the Washakie and Owl Creek uplifts, and to the east by the Cody arch. The Cody arch connects the southern Beartooth uplift with the northwesternmost Owl Creek uplift and separates the Bighorn <span class="hlt">basin</span> to the east from the Absaroka <span class="hlt">basin</span> to the <span class="hlt">west</span>. The eastern flank of the cody arch is bounded by a major <span class="hlt">west</span>-dipping thrust fault. The western flank is locally a subhorizontal shelf but overall gently dips to the <span class="hlt">west</span>-southwest into deeper parts of the Absaroka <span class="hlt">basin</span>. In contrast to most petroleum <span class="hlt">basins</span>, the Absaroka <span class="hlt">basin</span> is topographically a rugged mountain range, created by erosion of a thick sequence of Eocene volcanic rocks that fill the center of the <span class="hlt">basin</span> and lap onto the adjacent uplifts. Mesozoic and Paleozoic rocks that have produced several billion barrels of oil from the adjacent Bighorn and Wind River <span class="hlt">basins</span> are probably present within the Absaroka <span class="hlt">basin</span> and should have similar production capabilities. The Absaroka <span class="hlt">basin</span> may have greater potential than adjacent <span class="hlt">basins</span> because the volcanics provide additional traps and reservoirs. Domes in Mesozoic and Paleozoic rocks beneath the volcanics and stratigraphic traps at the angular unconformity between the volcanics and underlying reservoirs are primary exploration targets. Unique geologic, geophysical, permitting, access, and drilling problems are encountered in all aspects of exploration.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70156458','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70156458"><span>Canada <span class="hlt">Basin</span> revealed</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Mosher, David C.; Shimeld, John; Hutchinson, Deborah R.; Chian, D; Lebedeva-Ivanova, Nina; Jackson, Ruth</p> <p>2012-01-01</p> <p>More than 15,000 line-km of new regional seismic reflection and refraction data in the western Arctic Ocean provide insights into the tectonic and sedimentologic history of Canada <span class="hlt">Basin</span>, permitting development of new geologic understanding in one of Earth's last frontiers. These new data support a rotational opening model for southern Canada <span class="hlt">Basin</span>. There is a central basement ridge possibly representing an extinct spreading center with oceanic crustal velocities and blocky basement morphology characteristic of spreading centre crust surrounding this ridge. Basement elevation is lower in the south, mostly due to sediment loading subsidence. The sedimentary succession is thickest in the southern Beaufort Sea region, reaching more than 15 km, and generally thins to the north and <span class="hlt">west</span>. In the north, grabens and half-grabens are indicative of extension. Alpha-Mendeleev Ridge is a large igneous province in northern Amerasia <span class="hlt">Basin</span>, presumably emplaced synchronously with <span class="hlt">basin</span> formation. It overprints most of northern Canada <span class="hlt">Basin</span> structure. The seafloor and sedimentary succession of Canada <span class="hlt">Basin</span> is remarkably flat-lying in its central region, with little bathymetric change over most of its extent. Reflections that correlate over 100s of kms comprise most of the succession and on-lap bathymetric and basement highs. They are interpreted as representing deposits from unconfined turbidity current flows. Sediment distribution patterns reflect changing source directions during the basin’s history. Initially, probably late Cretaceous to Paleocene synrift sediments sourced from the Alaska and Mackenzie-Beaufort margins. This unit shows a progressive series of onlap unconformities with a younging trend towards Alpha and Northwind ridges, likely a response to contemporaneous subsidence. Sediment source direction appeared to shift to the Canadian Arctic Archipelago margin for the Eocene and Oligocene, likely due to uplift of Arctic islands during the Eurekan Orogeny. The final</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://files.eric.ed.gov/fulltext/ED449047.pdf','ERIC'); return false;" href="http://files.eric.ed.gov/fulltext/ED449047.pdf"><span>America's Historic <span class="hlt">West</span>.</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Beardsley, Donna A.</p> <p></p> <p>Settlers who pushed <span class="hlt">west</span> over the Great Divide to the shores of the Pacific Ocean found the American <span class="hlt">West</span> to be an expanse of extreme differences in time, topography, and ways of life. This paper elaborates on several historic sites in the American <span class="hlt">West</span>. The purpose of the paper is to introduce a series of places to the students and teachers of…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/325667','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/325667"><span>Radioactive air emissions notice of construction fuel removal for 105-KE <span class="hlt">basin</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Kamberg, L.D., Fluor Daniel Hanford</p> <p>1997-02-11</p> <p>This document serves as a notice of construction (NOC), pursuant to the requirements of Washington Administrative Code (WAC) 246-247-060, and as a request for approval to construct pursuant to 40 Code of Federal Regulations (CFR) 61.96 for the modifications, installation of new equipment, and fuel removal and sludge relocation activities at 105-KE <span class="hlt">Basin</span>. The <span class="hlt">105</span>-<span class="hlt">K</span> east reactor and its associated spent nuclear fuel (SNF) storage <span class="hlt">basin</span> (105-KE <span class="hlt">Basin</span>) were constructed in the early 1950s and are located in the 100-K Area about 1,400 feet from the Columbia River. The 105-KE <span class="hlt">Basin</span> contains 1,152 metric tons of SNF stored underwater in 3,673 open canisters. This SNF has been stored for varying periods of time ranging from 8 to 24 years. The 105-KE <span class="hlt">Basin</span> is constructed of unlined concrete and contains approximately 1.3 million gallons of water with an asphaltic membrane beneath the pool. The fuel is corroding and an estimated 1,700 cubic feet of sludge, containing radionuclides and miscellaneous materials, have accumulated in the <span class="hlt">basin</span>. The 105-KE <span class="hlt">Basin</span> has leaked radiologically contaminated water to the soil beneath the <span class="hlt">basin</span> in the past most likely at the construction joint between the foundation of the <span class="hlt">basin</span> and the foundation of the reactor. The purpose of the activities described in this Notice of Construction (NOC) is to enable the retrieval and transport of the fuel to the Cold Vacuum Drying Facility (CVDF). This NOC describes modifications, the installation of new equipment, and fuel removal and sludge relocation activities expected to be routine in the future. Debris removal activities described in this NOC will supersede the previously approved NOC (DOE/RL-95-65). The proposed modifications described are scheduled to begin in calendar year 1997.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://ngmdb.usgs.gov/Prodesc/proddesc_33553.htm','USGSPUBS'); return false;" href="http://ngmdb.usgs.gov/Prodesc/proddesc_33553.htm"><span>Geologic Map of the Nulato Quadrangle, <span class="hlt">West</span>-Central Alaska</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Patton, W.W.; Moll-Stalcup, E. J.</p> <p>2000-01-01</p> <p>Introduction The Nulato quadrangle encompasses approximately 17,000 km2 (6,500 mi2) of <span class="hlt">west</span>-central Alaska within the Yukon River drainage <span class="hlt">basin</span>. The quadrangle straddles two major geologic features-the Yukon-Koyukuk sedimentary <span class="hlt">basin</span>, a huge triangle-shaped Cretaceous depression that stretches across western Alaska from the Brooks Range to the Yukon delta; and the Ruby geanticline,a broad uplift of pre-Cretaceous rocks that borders the Yukon-Koyukuk <span class="hlt">basin</span> on the southeast. The Kaltag Fault crosses the quadrangle diagonally from northeast to southwest and dextrally offsets all major geologic features as much as 130 km.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/23149586','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/23149586"><span><span class="hlt">West</span> Nile virus ecology in a tropical ecosystem in Guatemala.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Morales-Betoulle, Maria E; Komar, Nicholas; Panella, Nicholas A; Alvarez, Danilo; López, María R; Betoulle, Jean-Luc; Sosa, Silvia M; Müller, María L; Kilpatrick, A Marm; Lanciotti, Robert S; Johnson, Barbara W; Powers, Ann M; Cordón-Rosales, Celia</p> <p>2013-01-01</p> <p><span class="hlt">West</span> Nile virus ecology has yet to be rigorously investigated in the Caribbean <span class="hlt">Basin</span>. We identified a transmission focus in Puerto Barrios, Guatemala, and established systematic monitoring of avian abundance and infection, seroconversions in domestic poultry, and viral infections in mosquitoes. <span class="hlt">West</span> Nile virus transmission was detected annually between May and October from 2005 to 2008. High temperature and low rainfall enhanced the probability of chicken seroconversions, which occurred in both urban and rural sites. <span class="hlt">West</span> Nile virus was isolated from Culex quinquefasciatus and to a lesser extent, from Culex mollis/Culex inflictus, but not from the most abundant Culex mosquito, Culex nigripalpus. A calculation that combined avian abundance, seroprevalence, and vertebrate reservoir competence suggested that great-tailed grackle (Quiscalus mexicanus) is the major amplifying host in this ecosystem. <span class="hlt">West</span> Nile virus transmission reached moderate levels in sentinel chickens during 2007, but less than that observed during outbreaks of human disease attributed to <span class="hlt">West</span> Nile virus in the United States.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/6054099','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/6054099"><span>Permian evolution of sandstone composition in a complex back-arc extensional to foreland <span class="hlt">basin</span>: The Bowen <span class="hlt">Basin</span>, eastern Australia</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Baker, J.C. . Centre for Microscopy and Microanalysis); Fielding, C.R. . Dept. of Earth Sciences); Caritat, P de . Dept. of Geology); Wilkinson, M.M. )</p> <p>1993-09-01</p> <p>The Bowen <span class="hlt">Basin</span> is a Permo-Triassic, back-arc extensional to foreland <span class="hlt">basin</span> that developed landward of an intermittently active continental volcanic arc associated with the eastern Australian convergent plate margin. The <span class="hlt">basin</span> has a complex, polyphase tectonic history that began with limited back-arc crustal extension during the Early Permian. This created a series of north-trending grabens and half grabens which, in the <span class="hlt">west</span>, accommodated quartz-rich sediment derived locally from surrounding, uplifted continental basement. In the east, coeval calc-alkaline, volcanolithic-rich, and volcaniclastic sediment was derived from the active volcanic arc. This early extensional episode was followed by a phase of passive thermal subsidence accompanied by episodic compression during the late Early Permian to early Late Permian, with little contemporaneous volcanism. In the <span class="hlt">west</span>, quartzose sediment was shed from stable, polymictic, continental basement immediately to the <span class="hlt">west</span> and south of the <span class="hlt">basin</span>, whereas volcanolithic-rich sediment that entered the eastern side of the <span class="hlt">basin</span> during this time was presumably derived from the inactive, and possibly partly submerged volcanic arc. During the late Late Permian, flexural loading and increased compression occurred along the eastern margin of the Bowen <span class="hlt">Basin</span>, and renewed volcanism took place in the arc system to the east. Reactivation of this arc led to westward and southward spread of volcanolithic-rich sediment over the entire <span class="hlt">basin</span>. Accordingly, areas in the <span class="hlt">west</span> that were earlier receiving quartzose, craton-derived sediment from the <span class="hlt">west</span> and south were overwhelmed by volcanolithic-rich, arc-derived sediment from the east and north. This transition from quartz-rich, craton-derived sediments to volcanolithic-rich, arc-derived sediments is consistent with the interpreted back-arc extensional to foreland <span class="hlt">basin</span> origin for the Bowen <span class="hlt">Basin</span>.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/362409','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/362409"><span>Strategy for phase 2 whole element furnace testing K <span class="hlt">West</span> fuel</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Lawrence, L.A.</p> <p>1998-03-13</p> <p>A strategy was developed for the second phase of the whole element furnace testing of damaged fuel removed from the K <span class="hlt">West</span> <span class="hlt">Basin</span>. The Phase 2 testing can be divided into three groups covering oxidation of whole element in moist inert atmospheres, drying elements for post Cold Vacuum Drying staging tests, and drying additional K <span class="hlt">West</span> elements to provide confirmation of the results from the first series of damaged K <span class="hlt">West</span> fuel drying studies.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/pp/1708/g2/pdf/pp1708_g2.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/pp/1708/g2/pdf/pp1708_g2.pdf"><span>Coalbed-methane production in the Appalachian <span class="hlt">basin</span>: Chapter G.2 in Coal and petroleum resources in the Appalachian <span class="hlt">basin</span>: distribution, geologic framework, and geochemical character</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Milici, Robert C.; Polyak, Désirée E.; Ruppert, Leslie F.; Ryder, Robert T.</p> <p>2014-01-01</p> <p>Coalbed methane (CBM) occurs in coal beds of Mississippian and Pennsylvanian (Carboniferous) age in the northern, central, and southern Appalachian <span class="hlt">basin</span> coal regions, which extend almost continuously from Pennsylvania southward to Alabama. Most commercial CBM production in the Appalachian <span class="hlt">basin</span> is from three structural subbasins: (1) the Dunkard <span class="hlt">basin</span> in Pennsylvania, Ohio, and northern <span class="hlt">West</span> Virginia; (2) the Pocahontas <span class="hlt">basin</span> in southern <span class="hlt">West</span> Virginia, eastern Kentucky, and southwestern Virginia; and (3) part of the Black Warrior <span class="hlt">basin</span> in Alabama. The cumulative CBM production in the Dunkard <span class="hlt">basin</span> through 2005 was 17 billion cubic feet (BCF), the production in the Pocahontas <span class="hlt">basin</span> through 2006 was 754 BCF, and the production in the part of the Black Warrior <span class="hlt">basin</span> in Alabama through 2007 was 2.008 TCF. CBM development may be regarded as mature in Alabama, where annual production from 1998 through 2007 was relatively constant and ranged from 112 to 121 BCF. An opportunity still exists for additional growth in the Pocahontas <span class="hlt">basin</span>. In 2005, annual CBM production in the Pocahontas <span class="hlt">basin</span> in Virginia and <span class="hlt">West</span> Virginia was 85 BCF. In addition, opportunities are emerging for producing the large, diffuse CBM resources in the Dunkard <span class="hlt">basin</span> as additional wells are drilled and technology improves.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('//www.loc.gov/pictures/collection/hh/item/la0164.photos.073691p/','SCIGOV-HHH'); return false;" href="//www.loc.gov/pictures/collection/hh/item/la0164.photos.073691p/"><span>78. (Credit JTL) Mixing chambers (19241926) in foreground, looking <span class="hlt">west</span> ...</span></a></p> <p><a target="_blank" href="http://www.loc.gov/pictures/collection/hh/">Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey</a></p> <p></p> <p></p> <p>78. (Credit JTL) Mixing chambers (1924-1926) in foreground, looking <span class="hlt">west</span> along south facade of station. Settling <span class="hlt">basins</span> to left, new filter house (1942) in background. Aerators added in 1930-31 to remove carbon dioxide from water. - McNeil Street Pumping Station, McNeil Street & Cross Bayou, Shreveport, Caddo Parish, LA</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('//www.loc.gov/pictures/collection/hh/item/az0239.photos.009756p/','SCIGOV-HHH'); return false;" href="//www.loc.gov/pictures/collection/hh/item/az0239.photos.009756p/"><span>22. VIEW OF GRAND CANAL, SHOWING OLD ALIGNMENT, LOOKING <span class="hlt">WEST</span> ...</span></a></p> <p><a target="_blank" href="http://www.loc.gov/pictures/collection/hh/">Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey</a></p> <p></p> <p></p> <p>22. VIEW OF GRAND CANAL, SHOWING OLD ALIGNMENT, LOOKING <span class="hlt">WEST</span> FROM BELOW THE SETTLING <span class="hlt">BASIN</span> (see HAER Photograph No. AZ-30-17, Crosscut Hydro Plant). Photographer: Mark Durben, April 1989 - Grand Canal, North side of Salt River, Tempe, Maricopa County, AZ</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('//www.loc.gov/pictures/collection/hh/item/hi0778.photos.367240p/','SCIGOV-HHH'); return false;" href="//www.loc.gov/pictures/collection/hh/item/hi0778.photos.367240p/"><span>Interior view of the hip roof at the <span class="hlt">west</span> end ...</span></a></p> <p><a target="_blank" href="http://www.loc.gov/pictures/collection/hh/">Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey</a></p> <p></p> <p></p> <p>Interior view of the hip roof at the <span class="hlt">west</span> end of the sail loft. View facing north northeast - U.S. Naval Base, Pearl Harbor, Shipfitter's Shop, Seventh Street near Avenue C, Adjacent to Repair <span class="hlt">Basins</span>, Pearl City, Honolulu County, HI</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('//www.loc.gov/pictures/collection/hh/item/md1796.photos.574323p/','SCIGOV-HHH'); return false;" href="//www.loc.gov/pictures/collection/hh/item/md1796.photos.574323p/"><span>East elevation of lowlift pumping station, looking <span class="hlt">west</span>. Former preliminary ...</span></a></p> <p><a target="_blank" href="http://www.loc.gov/pictures/collection/hh/">Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey</a></p> <p></p> <p></p> <p>East elevation of low-lift pumping station, looking <span class="hlt">west</span>. Former preliminary sedimentation <span class="hlt">basin</span> is in foreground. High-lift pumping station is in background. - Robert B. Morse Water Filtration Plant, 10700 and 10701 Columbia Pike, Silver Spring, Montgomery County, MD</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/of/2013/1002/OF13-1002.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/of/2013/1002/OF13-1002.pdf"><span>New vitrinite reflectance data for the Wind River <span class="hlt">Basin</span>, Wyoming</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Pawlewicz, Mark J.; Finn, Thomas M.</p> <p>2013-01-01</p> <p>The Wind River <span class="hlt">Basin</span> is a large Laramide (Late Cretaceous through Eocene) structural and sedimentary <span class="hlt">basin</span> that encompasses about 7,400 square miles in central Wyoming. The <span class="hlt">basin</span> is bounded by the Washakie Range and Owl Creek and southern Bighorn Mountains on the north, the Casper arch on the east and northeast, and the Granite Mountains on the south, and Wind River Range on the <span class="hlt">west</span>. The purpose of this report is to present new vitrinite reflectance data collected mainly from Cretaceous marine shales in the Wind River <span class="hlt">Basin</span> to better characterize their thermal maturity and hydrocarbon potential.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_16");'>16</a></li> <li><a href="#" onclick='return showDiv("page_17");'>17</a></li> <li class="active"><span>18</span></li> <li><a href="#" onclick='return showDiv("page_19");'>19</a></li> <li><a href="#" onclick='return showDiv("page_20");'>20</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_18 --> <div id="page_19" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_17");'>17</a></li> <li><a href="#" onclick='return showDiv("page_18");'>18</a></li> <li class="active"><span>19</span></li> <li><a href="#" onclick='return showDiv("page_20");'>20</a></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="361"> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2015AGUFMDI13A2624Y','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2015AGUFMDI13A2624Y"><span>Hf-Nd Isotopes in <span class="hlt">West</span> Philippine <span class="hlt">Basin</span> Basalts: Results from International Ocean Discovery Program (IODP) Site U1438 and Implications for the Early History of the Izu-Bonin-Mariana (IBM) Subduction System</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Yogodzinski, G. M.; Hocking, B.; Bizimis, M.; Hickey-Vargas, R.; Ishizuka, O.; Bogus, K.; Arculus, R. J.</p> <p>2015-12-01</p> <p>Drilling at IODP Site U1438, located immediately <span class="hlt">west</span> of Kyushu-Palau Ridge (KPR), the site of IBM subduction initiation, penetrated 1460 m of volcaniclastic sedimentary rock and 150 m of underlying basement. Biostratigraphic controls indicate a probable age for the oldest sedimentary rocks at around 55 Ma (51-64 Ma - Arculus et al., Nat Geosci in-press). This is close to the 48-52 Ma time period of IBM subduction initiation, based on studies in the forearc. There, the first products of volcanism are tholeiitic basalts termed FAB (forearc basalt), which are more depleted than average MORB and show subtle indicators of subduction geochemical enrichment (Reagan et al., 2010 - Geochem Geophy Geosy). Shipboard data indicate that Site U1438 basement basalts share many characteristics with FABs, including primitive major elements (high MgO/FeO*) and strongly depleted incompatible element patterns (Ti, Zr, Ti/V and Zr/Y below those of average MORB). Initial results thus indicate that FAB geochemistry may have been produced not only in the forearc, but also in backarc locations (<span class="hlt">west</span> of the KPR) at the time of subduction initiation. Hf-Nd isotopes for Site 1438 basement basalts show a significant range of compositions from ɛNd of 7.0 to 9.5 and ɛHf of 14.5 to 19.8 (present-day values). The data define a well-correlated and steep array in Hf-Nd isotope space. Relatively radiogenic Hf compared to Nd indicates an Indian Ocean-type MORB source, but the dominant signature, with ɛHf >16.5, is more radiogenic than most Indian MORB. The pattern through time is from more-to-less radiogenic and more variable Hf-Nd isotopes within the basement section. This pattern culminates in basaltic andesite sills, which intrude the lower parts of the sedimentary section. The sills have the least radiogenic compositions measured so far (ɛNd ~6.6, ɛHf ~13.8), and are similar to those of boninites of the IBM forearc and modern IBM arc and reararc rocks. The pattern within the basement</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/bul/2207/B/','USGSPUBS'); return false;" href="https://pubs.usgs.gov/bul/2207/B/"><span>Geology and total petroleum systems of the <span class="hlt">West</span>-Central Coastal province (7203), <span class="hlt">West</span> Africa</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Brownfield, Michael E.; Charpentier, Ronald R.</p> <p>2006-01-01</p> <p>The <span class="hlt">West</span>-Central Coastal Province of the Sub-Saharan Africa Region consists of the coastal and offshore areas of Cameroon, Equatorial Guinea, Gabon, Democratic Republic of the Congo, Republic of the Congo, Angola (including the disputed Cabinda Province), and Namibia. The area stretches from the east edge of the Niger Delta south to the Walvis Ridge. The <span class="hlt">West</span>-Central Coastal Province includes the Douala, Kribi-Campo, Rio Muni, Gabon, Congo, Kwanza, Benguela, and Namibe <span class="hlt">Basins</span>, which together form the Aptian salt <span class="hlt">basin</span> of equatorial <span class="hlt">west</span> Africa. The area has had significant exploration for petroleum; more than 295 oil fields have been discovered since 1954. Since 1995, several giant oil fields have been discovered, especially in the deep-water area of the Congo <span class="hlt">Basin</span>. Although many total petroleum systems may exist in the <span class="hlt">West</span>-Central Coastal Province, only four major total petroleum systems have been defined. The area of the province north of the Congo <span class="hlt">Basin</span> contains two total petroleum systems: the Melania-Gamba Total Petroleum System, consisting of Lower Cretaceous source and reservoir rocks, and the Azile-Senonian Total Petroleum System, consisting of Albian to Turonian source rocks and Cretaceous reservoir rocks. Two assessment units are defined in the <span class="hlt">West</span>-Central Coastal Province north of the Congo <span class="hlt">Basin</span>: the Gabon Subsalt and the Gabon Suprasalt Assessment Units. The Congo <span class="hlt">Basin</span> contains the Congo Delta Composite Total Petroleum System, consisting of Lower Cretaceous to Tertiary source and reservoir rocks. The Central Congo Delta and Carbonate Platform and the Central Congo Turbidites Assessment Units are defined in the Congo Delta Composite Total Petroleum System. The area south of the Congo <span class="hlt">Basin</span> contains the Cuanza Composite Total Petroleum System, consisting of Lower Cretaceous to Tertiary source and reservoir rocks. The Cuanza-Namibe Assessment Unit is defined in the Cuanza Composite Total Petroleum System. The U.S. Geological Survey (USGS) assessed the</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.water.usgs.gov/wri014036/','USGSPUBS'); return false;" href="http://pubs.water.usgs.gov/wri014036/"><span>Aquifer-characteristics data for <span class="hlt">West</span> Virginia</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Kozar, Mark D.; Mathes, Melvin V.</p> <p>2001-01-01</p> <p> through the central part of the State within the eastern part of the Kanawha River <span class="hlt">Basin</span>. This area of relatively high relief has peaks higher than 4,000 ft and precipitation greater than 50 in./yr. The band of high recharge rates extends northward towards Pennsylvania and includes the Monongahela River <span class="hlt">Basin</span>, which has a mean annual recharge of 21.4 inches. To the <span class="hlt">west</span> of this central band lies a region of lower relief with much lower mean annual precipitation rates. Mean annual recharge for the Tug Fork, Twelvepole Creek, and Guyandotte River <span class="hlt">Basins</span> is only 12.6 inches. For the western part of the Kanawha River <span class="hlt">Basin</span>, mean recharge is 11.9 inches. The lowest mean annual recharge rates (8.4 in.) within the State occur in the Little Kanawha River <span class="hlt">Basin</span> and the tributary streams in the region that discharge directly to the Ohio River. <span class="hlt">West</span> Virginia's Eastern Panhandle is an area characterized by long linear northeast to southwest trending ridges and valleys. The mean annual ground-water recharge rate for this region, which is drained almost entirely by the Potomac River and its tributaries, is 9.4 inches. This area, which is located within a rain shadow resulting from orographic lifting in the higher altitude area to the <span class="hlt">west</span>, receives less precipitation (approximately 30 in.) than the region to the <span class="hlt">west</span>.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/1981JGR....86.7901D','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/1981JGR....86.7901D"><span>Venezuela <span class="hlt">Basin</span> crustal structure</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Diebold, J. B.; Stoffa, P. L.; Buhl, P.; Truchan, M.</p> <p>1981-09-01</p> <p>Velocity-depth profiles derived from six two-ship expanding spread experiments, in combination with other geophysical data, define the characteristics of two distinct types of Venezuela <span class="hlt">Basin</span> crust and the boundary between them. Each two-ship common midpoint reflection/refraction profile is automatically transformed into the τ-p plane, `picked' and interpreted to provide V(Z) functions with appropriate confidence bounds. The results, together with gravity, magnetic, and near-vertical incidence reflection data, reveal a 50,000 km2 triangle of Venezuela <span class="hlt">Basin</span> crust which resembles normal oceanic crust in a magnetic quiet zone. North and <span class="hlt">west</span> of this triangle lies the previously defined, thick `Caribbean' crust, having two distinct layers above the M discontinuity. Acoustic basement there appears unusually smooth due to extensive basaltic sills and flows which were cored at Deep Sea Drilling Project sites 146/149(sills), and 150 (flows); also, depths to mantle are greater than normal. Interpretations of near-vertical and wide-angle reflection data show that the extra crustal thickness is due not only to the emplacement of the flows but also to the crust below being somewhat thicker than normal. The boundary between the two crustal areas has a NE-SW trend which parallels the dominant structural and magnetic lineations.This boundary coincides in position, though not in trend, with the previously defined `central Venezuela <span class="hlt">Basin</span> fault zone'. Further study is required to determine whether this boundary is of tectonic origin or if it represents a change in style of crustal production.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2010AGUFM.T42B..06L','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2010AGUFM.T42B..06L"><span>Marginal <span class="hlt">Basins</span> of the Western Pacific: An Overview (Invited)</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Lewis, S. D.</p> <p>2010-12-01</p> <p>Marginal ocean <span class="hlt">basins</span> of the Western Pacific fall into several distinct categories based on their mechanisms of formation: 1) Back-arc <span class="hlt">basins</span> that likely formed associated with island arc rifting and seafloor spreading, such as the Mariana Trough and the Shikoku-Parece Vela <span class="hlt">Basin</span>. 2) Ocean <span class="hlt">basins</span> that formed through processes related to continental rifting, such as the South China Sea and the Sea of Japan, and 3) marginal <span class="hlt">basins</span> of ambiguous or uncertain origin such as the <span class="hlt">West</span> Philippine <span class="hlt">Basin</span> and the Celebes Sea, that may have originated by back-arc spreading, by entrapment of a fragment of an older ocean <span class="hlt">basin</span>, or by rifting from the Southeast Asian continental margin. The origin of the largest of the western Pacific marginal <span class="hlt">basins</span>, the <span class="hlt">West</span> Philippine <span class="hlt">Basin</span>, has been suggested to be either by back-arc rifting or through entrapment from a major ocean <span class="hlt">basin</span>. Based on the geological/tectonic characteristics of ocean <span class="hlt">basin</span> margins, the compositions and ages of oceanic basement, and the stratigraphic and paleomagnetic data from the marginal <span class="hlt">basins</span>, only the Japan Sea, the South China Sea, the Andaman Sea, and perhaps the Celebes Sea are likely candidates for being formed in relation to the uplift off the Tibetan Plateau. While the age of formation of the <span class="hlt">West</span> Philippine <span class="hlt">Basin</span> (55-39 Ma) is roughly synchronous with Tibetan Plateau uplift, the lack of continental crustal blocks or continentally-derived sediment argues against an Asian continental margin origin for the <span class="hlt">West</span> Philippine <span class="hlt">Basin</span>. In addition, the evidence for active plate boundaries in the Philippines and along the western side of the <span class="hlt">West</span> Philippine <span class="hlt">Basin</span> at this time suggests that it was isolated from Asian deformation perhaps related to Tibetan Plateau uplift. The Celebes Sea is of similar age to the <span class="hlt">West</span> Philippine <span class="hlt">Basin</span>, and paleomagnetic data from basement rocks indicates that has moved less than 150 relative to Southeast Asia since it was formed. This evidence, coupled with N-MORB samples recovered</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/of/2007/1047/srp/srp052/of2007-1047srp052.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/of/2007/1047/srp/srp052/of2007-1047srp052.pdf"><span>Regional seismic stratigraphic correlations of the Ross Sea: Implications for the tectonic history of the <span class="hlt">West</span> Antarctic Rift System</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Decesari, Robert C.; Sorlien, Christopher C.; Luyendyk, Bruce P.; Wilson, Douglas S.; Bartek, Louis; Diebold, John; Hopkins, Sarah E.</p> <p>2007-01-01</p> <p>Using existing and new seismic reflection data, new and updated correlations of late Oligocene-early Miocene RSS-2 strata were made between the southern parts of Ross Sea <span class="hlt">basins</span>. Previous studies documented Cretaceous extension across much of Ross Sea. We interpret that Cenozoic extension also occurred across Ross Sea. Subsidence during and following this extension deepened existing <span class="hlt">basins</span> and may have initiated <span class="hlt">basins</span> in the <span class="hlt">west</span>, subsiding ridges between <span class="hlt">basins</span> below sea level during the late Oligocene. Pre-Oligocene strata record cessation of L. Cretaceous extension in easternmost Ross Sea. Successively younger Cenozoic extension occurred from east to <span class="hlt">west</span> across the rest of Ross Sea.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/5864061','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/5864061"><span>Ordovician chitinozoan zones of Great <span class="hlt">Basin</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Hutter, T.J.</p> <p>1987-08-01</p> <p>Within the <span class="hlt">Basin</span> and Range province of the Great <span class="hlt">Basin</span> of the western US, Ordovician chitinozoans have been recovered in two major lithic facies; the western eugeosynclinal facies and the eastern miogeosynclinal facies. Chitinozoans recovered from these facies range in age from Arenig to Ashgill. Extensive collections from this area make possible the establishment of chitinozoan faunal interval zones from the Ordovician of this area. Selected species of biostratigraphic value include, in chronostratigraphic order, Lagenochitina ovoidea Benoit and Taugourdeau, 1961, Conochitina langei Combaz and Peniguel, 1972, Conochitinia poumoti Combaz and Penique, Desmochitina cf. nodosa Eisenack, 1931, Conochitina maclartii Combaz and Peniguel, 1972, Conochitina robusta Eisenack, 1959, Angochitina capitallata Eisenack, 1937, Sphaerochitina lepta Jenkins. 1970, and Ancyrochitina merga Jenkins, 1970. In many cases, these zones can be divided into additional sub-zones using chitinozoans and acritarchs. In all cases, these chitinozoan faunal zones are contrasted with established American graptolite zones of the area, as well as correlated with British standard graptolite zones. The composition of these faunas of the western US Great <span class="hlt">Basin</span> is similar to that of the Marathon region of <span class="hlt">west</span> Texas and the <span class="hlt">Basin</span> Ranges of Arizona and New Mexico, to which direct comparisons have been made. There also appears to be a great similarity with the microfaunas and microfloras of the Ordovician of the Canning <span class="hlt">basin</span> of western Australia. The Ordovician chitinozoan faunal interval zones established for the <span class="hlt">Basin</span> and Range province of the Great <span class="hlt">Basin</span> of the western US also appear to be applicable to the Marathon region of <span class="hlt">west</span> Texas and the <span class="hlt">Basin</span> Ranges of Arizona and New Mexico.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/421047','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/421047"><span>Sedimentary sequence evolution in a Foredeep <span class="hlt">basin</span>: Eastern Venezuela</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Bejarano, C.; Funes, D.; Sarzalho, S.; Audemard, F.; Flores, G.</p> <p>1996-08-01</p> <p>Well log-seismic sequence stratigraphy analysis in the Eastern Venezuela Foreland <span class="hlt">Basin</span> leads to study of the evolution of sedimentary sequences onto the Cretaceous-Paleocene passive margin. This <span class="hlt">basin</span> comprises two different foredeep sub-<span class="hlt">basins</span>: The Guarico subbasin to the <span class="hlt">west</span>, older, and the Maturin sub-<span class="hlt">basin</span> to the east, younger. A foredeep switching between these two sub-<span class="hlt">basins</span> is observed at 12.5 m.y. Seismic interpretation and well log sections across the study area show sedimentary sequences with transgressive sands and coastal onlaps to the east-southeast for the Guarico sub-<span class="hlt">basin</span>, as well as truncations below the switching sequence (12.5 m.y.), and the Maturin sub-<span class="hlt">basin</span> shows apparent coastal onlaps to the <span class="hlt">west</span>-northwest, as well as a marine onlap (deeper water) in the <span class="hlt">west</span>, where it starts to establish. Sequence stratigraphy analysis of these sequences with well logs allowed the study of the evolution of stratigraphic section from Paleocene to middle Miocene (68.0-12.0 m.y.). On the basis of well log patterns, the sequences were divided in regressive-transgressive-regressive sedimentary cycles caused by changes in relative sea level. Facies distributions were analyzed and the sequences were divided into simple sequences or sub- sequences of a greater frequencies than third order depositional sequences.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('//www.loc.gov/pictures/collection/hh/item/ky0318.photos.037744p/','SCIGOV-HHH'); return false;" href="//www.loc.gov/pictures/collection/hh/item/ky0318.photos.037744p/"><span>300. VACANT LOTS BETWEEN <span class="hlt">WEST</span> MADISON ALLEY AND <span class="hlt">WEST</span> CHESTNUT ...</span></a></p> <p><a target="_blank" href="http://www.loc.gov/pictures/collection/hh/">Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey</a></p> <p></p> <p></p> <p>300. VACANT LOTS BETWEEN <span class="hlt">WEST</span> MADISON ALLEY AND <span class="hlt">WEST</span> CHESTNUT STREET, TOWARD <span class="hlt">WEST</span> - Russell Neighborhood, Bounded by Congress & Esquire Alley, Fifteenth & Twenty-first Streets, Louisville, Jefferson County, KY</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('//www.loc.gov/pictures/collection/hh/item/az0229.photos.008643p/','SCIGOV-HHH'); return false;" href="//www.loc.gov/pictures/collection/hh/item/az0229.photos.008643p/"><span>13. VIEW OF BRIDGE, LOOKING <span class="hlt">WEST</span> FROM THE <span class="hlt">WEST</span> TOWER ...</span></a></p> <p><a target="_blank" href="http://www.loc.gov/pictures/collection/hh/">Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey</a></p> <p></p> <p></p> <p>13. VIEW OF BRIDGE, LOOKING <span class="hlt">WEST</span> FROM THE <span class="hlt">WEST</span> TOWER TO THE MAIN SUSPENSION CABLE <span class="hlt">WEST</span> ANCHORAGE. February 1987 - Verde River Sheep Bridge, Spanning Verde River (Tonto National Forest), Cave Creek, Maricopa County, AZ</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('//www.loc.gov/pictures/collection/hh/item/ky0318.photos.037554p/','SCIGOV-HHH'); return false;" href="//www.loc.gov/pictures/collection/hh/item/ky0318.photos.037554p/"><span>110. <span class="hlt">WEST</span> CHESTNUT STREET PAPTIST CHURCH AT 1725 <span class="hlt">WEST</span> CHESTNUT ...</span></a></p> <p><a target="_blank" href="http://www.loc.gov/pictures/collection/hh/">Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey</a></p> <p></p> <p></p> <p>110. <span class="hlt">WEST</span> CHESTNUT STREET PAPTIST CHURCH AT 1725 <span class="hlt">WEST</span> CHESTNUT STREET, <span class="hlt">WEST</span> SIDE - Russell Neighborhood, Bounded by Congress & Esquire Alley, Fifteenth & Twenty-first Streets, Louisville, Jefferson County, KY</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/6935736','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/6935736"><span>Laramide <span class="hlt">basin</span> subsidence and fluvial architecture of the Fort Union and Wasatch Formations in the southern greater Green River <span class="hlt">basin</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Johnson, P.L. )</p> <p>1990-05-01</p> <p>The late Paleocene Fort Union Formation and early Eocene Wasatch Formation exposed around the Rock Springs uplift demonstrate subsidence variations in the southern greater Green River <span class="hlt">basin</span>. Total unit thickness and distribution of channel sandstones within overbank deposits record differences in subsidence rate across the <span class="hlt">basin</span>. On the <span class="hlt">west</span> flank of the Rock springs uplift, <span class="hlt">west</span> of the bounding fault, channels have close spacing and thickness is low. On the south flank within the uplift, the thickness values are intermediary but channels are very closely spaced. Away from the uplift on the southeast flank, the thickness is greatest and channels are very widely spaced. Paleocurrents indicate that rivers flowed southward across the central <span class="hlt">basin</span> to an eastward-flowing axis trunk river at the southern end of the <span class="hlt">basin</span>. Both the south and southeast flank area were within the <span class="hlt">basin</span> axis, but the <span class="hlt">west</span> flank areas was within the central <span class="hlt">basin</span>. Thickness trends represent subsidence variations across the <span class="hlt">basin</span>. Subsidence was slowest at the <span class="hlt">west</span> flank area. On the south flank, subsidence was greater, and the highest subsidence rate was on the southeast flank. Generally, thickness indicates increasing subsidence toward the Uinta uplift, but the south flank area is an exception. <span class="hlt">Basin</span> subsidence occurred by flexure of the lithosphere under a tectonic load from the Uinta uplift to the south. Thickened lithosphere at the Rock springs uplift bounding fault was resistant to flexure. Thus, on the south flank near the fault, subsidence was slower than on the southeast flank where the lithosphere was not thickened. The closely spaced fluvial architecture on the south flank resulted from a narrow <span class="hlt">basin</span> axis flood plain. A narrow flood plain possibly resulted from the subsidence resistance of thickened lithosphere at the Rock Springs uplift bounding fault or from topographic expression of the uplift itself.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('//www.loc.gov/pictures/collection/hh/item/ca2617.photos.326868p/','SCIGOV-HHH'); return false;" href="//www.loc.gov/pictures/collection/hh/item/ca2617.photos.326868p/"><span>5. EASTSIDE RESERVOIR, LOOKING <span class="hlt">WEST</span>. <span class="hlt">WEST</span> DAM UNDER CONSTRUCTION, QUARRIES ...</span></a></p> <p><a target="_blank" href="http://www.loc.gov/pictures/collection/hh/">Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey</a></p> <p></p> <p></p> <p>5. EASTSIDE RESERVOIR, LOOKING <span class="hlt">WEST</span>. <span class="hlt">WEST</span> DAM UNDER CONSTRUCTION, QUARRIES TO LEFT MIDDLE GROUND OF PICTURE. - Eastside Reservoir, Diamond & Domenigoni Valleys, southwest of Hemet, Hemet, Riverside County, CA</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.ars.usda.gov/research/publications/publication/?seqNo115=257650','TEKTRAN'); return false;" href="http://www.ars.usda.gov/research/publications/publication/?seqNo115=257650"><span>The relationship between conductivity and major ions within the Davis Spring drainage <span class="hlt">basin</span> as a method to determine the source of spring discharge</span></a></p> <p><a target="_blank" href="http://www.ars.usda.gov/services/TekTran.htm">Technology Transfer Automated Retrieval System (TEKTRAN)</a></p> <p></p> <p></p> <p>The Davis Spring drainage <span class="hlt">basin</span> is a 190 km2 karst <span class="hlt">basin</span> in Greenbrier County, <span class="hlt">West</span> Virginia underlain by the 300+ m sequence of the Mississippian Greenbrier Limestone Group which rests on top of the Maccrady Shale. Davis Spring is the largest karst spring in <span class="hlt">West</span> Virginia with average flows of 10 ...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2008Geomo.100..193S','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2008Geomo.100..193S"><span>Plio-Pleistocene drainage development in an inverted sedimentary <span class="hlt">basin</span>: Vera <span class="hlt">basin</span>, Betic Cordillera, SE Spain</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Stokes, Martin</p> <p>2008-08-01</p> <p> fluvial incision into the underlying <span class="hlt">basin</span> fill sediments and <span class="hlt">basin</span> margin mountainous topography. Fluvial incision, headwards erosion, expansion and modification of the consequent drainage network is documented within a series of up to four major inset river terrace levels and associated landforms. Fluvial incision and drainage network expansion are attributed to differential uplift and the creation of regional gradients between adjacent <span class="hlt">basins</span>. The relatively low Plio-Pleistocene uplift rate of the Vera <span class="hlt">basin</span> (11-21 m Ma - 1 ) in comparison to adjacent <span class="hlt">basins</span> (Sorbas: 80-160 m Ma - 1 ; Huercal-Overa: > 50 m Ma - 1 ) resulted in a switch from internal to external <span class="hlt">basin</span> drainage. Ancestral forms of the principal drainage systems within the Vera <span class="hlt">basin</span>: the Ríos Almanzora, Aguas and Antas, captured <span class="hlt">basins</span> and mountain catchment areas to the north (Huercal-Overa <span class="hlt">basin</span>), southwest (Sorbas <span class="hlt">basin</span>) and <span class="hlt">west</span> (Sierra de los Filabres range). The switch from <span class="hlt">basin</span> infilling to fluvial dissection is coincident with a phase of Early-Mid Pleistocene compressional tectonics, expressed by extensional faulting. This deformation is probably linked to accelerated strike-slip movement along the Palomares Fault Zone. The faulting is superimposed onto the longer term pattern of Plio-Pleistocene uplift and <span class="hlt">basin</span> inversion.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/127593','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/127593"><span>Petroleum geology of Giant oil and gas fields in Turpan <span class="hlt">Basin</span> Xinjiang China</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Boliang, Hu; Jiajing, Yang,</p> <p>1995-08-01</p> <p>Turpan <span class="hlt">Basin</span> is the smallest and the last development <span class="hlt">basin</span> in three big <span class="hlt">basins</span> of Xinjiang autonomous region, P.R. China. Since April, 1989, the Shanshan oilfield was discovered, the Oinling, Wenjisang, Midang, Baka, Qiudong and North Putaogou fields were discovered. In 1994, the crude oil productivity of Turpan <span class="hlt">Basin</span> was a Million tons, with an estimated output of 3 million tons per year by 1995; obviously a key oil productive base in the <span class="hlt">west</span> <span class="hlt">basins</span> of China, Tarim, Jungar, Chaidam, Hexi, Erduos and Sichuan <span class="hlt">Basins</span>. The Turpan <span class="hlt">Basin</span> is an intermontane <span class="hlt">basin</span> in a eugeosyncline foldbelt of the north Tianshan Mountains. The oil and gas was produced from the payzone of the Xishanyao, Sanjianfang and Qiketai Formatiosn of the Middle Jurassic series. The geochemical characteristics of the crude oil and gas indicate they derive from the Middle to Lower Jurassic coal series, in which contains the best oil-prone source rocks in the <span class="hlt">basin</span>.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/5865770','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/5865770"><span>Kandik <span class="hlt">basin</span> stratigraphy, sedimentology, and structure</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Wiley, T.J.; Howell, D.G.; Kauffman-Linam, L.; Boundy-Sanders, S.; Murray, R.W.; Jones, D.L.</p> <p>1987-05-01</p> <p>East-central Alaska's Kandik <span class="hlt">basin</span> is a structural remnant of a larger Permian to Cretaceous <span class="hlt">basin</span>. Permian shallow-water Tahkandit Limestone and Step Conglomerate at the base of the sequence rest unconformably on Paleozoic chert-pebble conglomerate, siliceous shale, and limestone. These Permian rocks are overlain by Triassic to Lower Cretaceous open-ocean Glenn Shale, which grades upward into Lower Cretaceous (Valanginian) hummocky cross-bedded (outer shelf to upper slope) Keenan Quartzite. The quartzite grades upward into fine-grained north-northeast-flowing turbidites of the Biederman Argillite (undated). East-northeast-flowing pebbly turbidites of the Kathul Graywacke (undated) overlie Biederman strata. Locally, Cretaceous (Albian and younger) through Paleogene nonmarine rocks unconformably overlie the Kandik <span class="hlt">basin</span> sequence. The Mesozoic part of the sequence is similar to that of Manley <span class="hlt">basin</span>, northwest Yukon Territory, and much of the North Slope. East-directed flow for Kandik <span class="hlt">basin</span> strata may require paleogeographic reconstructions involving local to large-scale palinspastic rotations or a western source of chert detritus. Deformation of the Mesozoic sequence in Kandik <span class="hlt">basin</span> <span class="hlt">west</span> of the US-Canada border shows northwest-southeast shortening. Shaly units are tightly folded with well-developed cleavage striking northeast. Strikes of beds swing from northeast to east in the extreme southwestern part of the <span class="hlt">basin</span>, suggesting clockwise rotation. Thrust faults, reverse faults, and fold axes trend east to northeast; normal faults trend northwest. These relations are all consistent with, and probably are closely related to, right slip on the <span class="hlt">west</span>-northwest-trending Tintina fault.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('//www.loc.gov/pictures/collection/hh/item/id0445.photos.224316p/','SCIGOV-HHH'); return false;" href="//www.loc.gov/pictures/collection/hh/item/id0445.photos.224316p/"><span>PBF Cooling Tower under construction. Cold water <span class="hlt">basin</span> is five ...</span></a></p> <p><a target="_blank" href="http://www.loc.gov/pictures/collection/hh/">Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey</a></p> <p></p> <p></p> <p>PBF Cooling Tower under construction. Cold water <span class="hlt">basin</span> is five feet deep. Foundation and <span class="hlt">basin</span> walls are reinforced concrete. Camera facing <span class="hlt">west</span>. Pipe openings through wall in front are outlets for return flow of cool water to reactor building. Photographer: John Capek. Date: September 4, 1968. INEEL negative no. 68-3473 - Idaho National Engineering Laboratory, SPERT-I & Power Burst Facility Area, Scoville, Butte County, ID</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/7229969','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/7229969"><span>Tectonic development of Michigan <span class="hlt">basin</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Prouty, C.E.</p> <p>1986-08-01</p> <p>The general form of the Michigan <span class="hlt">basin</span> and surrounding frame structures - the Findlay, Kankakee, and Wisconsin arches - was inherited from the Precambrian. An ongoing study has provided new information on present <span class="hlt">basin</span> configuration and the evolution of intrabasinal structures during the Paleozoic. This study involves: (1) isopach, structure contour, depocenter, and lithofacies map preparation; (2) diagenetic and epigenetic dolomitization processes and patterns; (3) Landsat imagery and lineament interpretation; (4) recognition of shearing mechanics and the resulting shear faulting and folding; and (5) the recognition of radial faults in contrast to shear faults. Monitoring of the above throughout the Paleozoic indicates that tectonic events within the <span class="hlt">basin</span> were episodic in nature. Stresses are recognized as external and, through Fourier analysis of lineaments (shear faults), may be demonstrated as from the southeast, probably the Appalachian mobile belt. Shear faults are seated in Precambrian rocks, although they are probably not of that age. The faults occur with accompanying shear folds in rocks possibly as early as the Late Ordovician or Middle Silurian, but definitely by the Middle Devonian with the principal faulting and folding during the post-Osage Mississippian. Local shifting of the depocenter within the general Saginaw Bay area occurred during the early Paleozoic with a major shift westward to the present central <span class="hlt">basin</span> position accompanied by the development of the present north-northwest ellipticity of the <span class="hlt">basin</span> during the post-Osage, pre-Meramecian Mississippian. Barrier separation of the <span class="hlt">West</span> Michigan Lagoon occurred in the Middle Ordovician and Middle and Late Devonian. Radial structures can be demonstrated in at least the Upper Silurian and Upper Devonian.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.epa.gov/grants-mining-district/san-mateo-creek-basin','PESTICIDES'); return false;" href="https://www.epa.gov/grants-mining-district/san-mateo-creek-basin"><span>San Mateo Creek <span class="hlt">Basin</span></span></a></p> <p><a target="_blank" href="http://www.epa.gov/pesticides/search.htm">EPA Pesticide Factsheets</a></p> <p></p> <p></p> <p>The San Mateo Creek <span class="hlt">Basin</span> comprises approximately 321 square miles within the Rio San Jose drainage <span class="hlt">basin</span> in McKinley and Cibola counties, New Mexico. This <span class="hlt">basin</span> is located within the Grants Mining District (GMD).</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_17");'>17</a></li> <li><a href="#" onclick='return showDiv("page_18");'>18</a></li> <li class="active"><span>19</span></li> <li><a href="#" onclick='return showDiv("page_20");'>20</a></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_19 --> <div id="page_20" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_18");'>18</a></li> <li><a href="#" onclick='return showDiv("page_19");'>19</a></li> <li class="active"><span>20</span></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li><a href="#" onclick='return showDiv("page_22");'>22</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="381"> <li> <p><a target="_blank" onclick="trackOutboundLink('https://ntrs.nasa.gov/search.jsp?R=19890024919&hterms=indian+navy&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D40%26Ntt%3Dindian%2Bnavy','NASA-TRS'); return false;" href="https://ntrs.nasa.gov/search.jsp?R=19890024919&hterms=indian+navy&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D40%26Ntt%3Dindian%2Bnavy"><span>Somali <span class="hlt">Basin</span>, Chain Ridge, and origin of the Northern Somali <span class="hlt">Basin</span> gravity and geoid low</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Cochran, James R.</p> <p>1988-01-01</p> <p>Geophysical data are used to investigate the origin of the Northern Somali <span class="hlt">Basin</span> and its relationship to surrounding tectonic elements. The results show the Northern Somali <span class="hlt">Basin</span> to be the third of a series of oceanic <span class="hlt">basins</span> separated by long transform faults created during movement between East and <span class="hlt">West</span> Gondwanaland. The flexure resulting from differential subsidence across Chain Ridge along with the difference in lithospheric thermal structure on either side of it can account for the amplitude and shape of the observed geoid step and gravity anomalies across Chain Rige. It is suggested that the geoid and gravity low over the Northern Somali <span class="hlt">Basin</span> may result from the superposition of a continental edge effect anomaly and the fracture zone edge effect anomaly.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/5963712','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/5963712"><span><span class="hlt">West</span> Valley Demonstration Project</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Not Available</p> <p>1991-01-01</p> <p>Under the <span class="hlt">West</span> Valley Demonstration Project Act, Public Law 96-368, liquid high-level radioactive waste stored at the Western New York Nuclear Service Center in <span class="hlt">West</span> Valley, New York, is to be solidified (vitrified) in borosilicate glass and transported to a federal repository for geologic disposal. This waste material resulted from spent nuclear fuel reprocessing operations conducted between 1966 and 1972. Project costs are shared by the US Department of Energy (90 percent) and the New York State Energy Research and Development Authority (10 percent). The site on which the Project is located is owned by New York State. This report is an overview of <span class="hlt">West</span> Valley's plans and accomplishments.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70157440','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70157440"><span>Aleutian <span class="hlt">basin</span> oceanic crust</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Christeson, Gail L.; Barth, Ginger A.</p> <p>2015-01-01</p> <p>We present two-dimensional P-wave velocity structure along two wide-angle ocean bottom seismometer profiles from the Aleutian <span class="hlt">basin</span> in the Bering Sea. The basement here is commonly considered to be trapped oceanic crust, yet there is a change in orientation of magnetic lineations and gravity features within the <span class="hlt">basin</span> that might reflect later processes. Line 1 extends ∼225 km from southwest to northeast, while Line 2 extends ∼225 km from northwest to southeast and crosses the observed change in magnetic lineation orientation. Velocities of the sediment layer increase from 2.0 km/s at the seafloor to 3.0–3.4 km/s just above basement, crustal velocities increase from 5.1–5.6 km/s at the top of basement to 7.0–7.1 km/s at the base of the crust, and upper mantle velocities are 8.1–8.2 km/s. Average sediment thickness is 3.8–3.9 km for both profiles. Crustal thickness varies from 6.2 to 9.6 km, with average thickness of 7.2 km on Line 1 and 8.8 km on Line 2. There is no clear change in crustal structure associated with a change in orientation of magnetic lineations and gravity features. The velocity structure is consistent with that of normal or thickened oceanic crust. The observed increase in crustal thickness from <span class="hlt">west</span> to east is interpreted as reflecting an increase in melt supply during crustal formation.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('//www.loc.gov/pictures/collection/hh/item/ca2271.photos.315524p/','SCIGOV-HHH'); return false;" href="//www.loc.gov/pictures/collection/hh/item/ca2271.photos.315524p/"><span>38. SECOND FLOOR <span class="hlt">WEST</span> SIDE APARTMENT <span class="hlt">WEST</span> BEDROOM INTERIOR SHOWING ...</span></a></p> <p><a target="_blank" href="http://www.loc.gov/pictures/collection/hh/">Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey</a></p> <p></p> <p></p> <p>38. SECOND FLOOR <span class="hlt">WEST</span> SIDE APARTMENT <span class="hlt">WEST</span> BEDROOM INTERIOR SHOWING PAIRED 6-LIGHT OVER 6-LIGHT DOUBLE-HUNG, WOOD-FRAME WINDOWS ON <span class="hlt">WEST</span> WALL AND OPEN DOORWAY TO LIVING ROOM. VIEW TO <span class="hlt">WEST</span>. - Lee Vining Creek Hydroelectric System, Triplex Cottage, Lee Vining Creek, Lee Vining, Mono County, CA</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('//www.loc.gov/pictures/collection/hh/item/co0811.photos.329035p/','SCIGOV-HHH'); return false;" href="//www.loc.gov/pictures/collection/hh/item/co0811.photos.329035p/"><span><span class="hlt">West</span> side of the north and <span class="hlt">west</span> wings of the ...</span></a></p> <p><a target="_blank" href="http://www.loc.gov/pictures/collection/hh/">Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey</a></p> <p></p> <p></p> <p><span class="hlt">West</span> side of the north and <span class="hlt">west</span> wings of the building - Fitzsimons General Hospital, Women's Army Corps Recreation & Administration Building, North Hickey Street, <span class="hlt">west</span> side, 75 feet north of intersection of <span class="hlt">West</span> Pennington Avenue & North Hickey Street, Aurora, Adams County, CO</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2014JGRB..119..378C','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2014JGRB..119..378C"><span>The crustal thickness of <span class="hlt">West</span> Antarctica</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Chaput, J.; Aster, R. C.; Huerta, A.; Sun, X.; Lloyd, A.; Wiens, D.; Nyblade, A.; Anandakrishnan, S.; Winberry, J. P.; Wilson, T.</p> <p>2014-01-01</p> <p>P-to-S receiver functions (PRFs) from the Polar Earth Observing Network (POLENET) GPS and seismic leg of POLENET spanning <span class="hlt">West</span> Antarctica and the Transantarctic Mountains deployment of seismographic stations provide new estimates of crustal thickness across <span class="hlt">West</span> Antarctica, including the <span class="hlt">West</span> Antarctic Rift System (WARS), Marie Byrd Land (MBL) dome, and the Transantarctic Mountains (TAM) margin. We show that complications arising from ice sheet multiples can be effectively managed and further information concerning low-velocity subglacial sediment thickness may be determined, via top-down utilization of synthetic receiver function models. We combine shallow structure constraints with the response of deeper layers using a regularized Markov chain Monte Carlo methodology to constrain bulk crustal properties. Crustal thickness estimates range from 17.0±4 km at Fishtail Point in the western WARS to 45±5 km at Lonewolf Nunataks in the TAM. Symmetric regions of crustal thinning observed in a transect deployment across the <span class="hlt">West</span> Antarctic Ice Sheet correlate with deep subice <span class="hlt">basins</span>, consistent with pure shear crustal necking under past localized extension. Subglacial sediment deposit thicknesses generally correlate with trough/dome expectations, with the thickest inferred subice low-velocity sediment estimated as ˜0.4 km within the Bentley Subglacial Trench. Inverted PRFs from this study and other published crustal estimates are combined with ambient noise surface wave constraints to generate a crustal thickness map for <span class="hlt">West</span> Antarctica south of 75°S. Observations are consistent with isostatic crustal compensation across the central WARS but indicate significant mantle compensation across the TAM, Ellsworth Block, MBL dome, and eastern and western sectors of thinnest WARS crust, consistent with low density and likely dynamic, low-viscosity high-temperature mantle.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2010EGUGA..12.4091O','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2010EGUGA..12.4091O"><span>Characteristics, physical - geographical and climate of the <span class="hlt">basin</span> Lumbardhi in Peja, Republic of Kosovo</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Osmanaj, Lavdim; Zeneli, Vildane; Komoraku, Alket</p> <p>2010-05-01</p> <p>Territory of the Republic of Kosovo has four river <span class="hlt">basins</span>; <span class="hlt">basin</span> "White Drini", "Ibar", "Morava e Binces" and "Lepenci". This paper deals: Orografic, hydro geological, geological and climatic characteristics. River <span class="hlt">basin</span> of Peja "Lumbardhi" is branch of River <span class="hlt">basin</span> " White Drini', all surface of the <span class="hlt">basin</span> until shedding to the " White Drini" is 483.00km2 and extends toward east and <span class="hlt">west</span>. Lumbardhi source of Peja is branch of Mount Çakorr. As right main branches are: River Bjeluha and lake Milishevci, whereas in the left side of river Boga and Alga. Key works: rainfall, air temperature, snow, air humidity, wind, evaporation.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2016DokES.470.1019G','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2016DokES.470.1019G"><span>Igneous rocks of the <span class="hlt">West</span> Sakhalin Terrane of Sakhalin Island</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Grannik, V. M.</p> <p>2016-10-01</p> <p>It has been determined that the Rozhdestvenka Formation of the <span class="hlt">West</span> Sakhalin Terrane composed of Late Mesozoic igneous rocks is a fragment of the accretionary prism of the Rebun-Kabato-Moneron-Samarga island-arc system. Volcanic eruptions, as well as destruction of the Rebun-Kabato-Moneron-Samarga island-arc and the East Sikhote-Alin volcano plutonic marginal continental belt, were the sources of pyroclastic and clastic material entering the sedimentary <span class="hlt">basin</span>, where the Pobedinsk and Krasnoyarka suites of the <span class="hlt">West</span> Sakhalin Terrane were formed.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.gpo.gov/fdsys/pkg/FR-2011-08-09/pdf/2011-20147.pdf','FEDREG'); return false;" href="https://www.gpo.gov/fdsys/pkg/FR-2011-08-09/pdf/2011-20147.pdf"><span>76 FR 48854 - Williston <span class="hlt">Basin</span> Interstate Pipeline Company; Notice of Request Under Blanket Authorization</span></a></p> <p><a target="_blank" href="http://www.gpo.gov/fdsys/browse/collection.action?collectionCode=FR">Federal Register 2010, 2011, 2012, 2013, 2014</a></p> <p></p> <p>2011-08-09</p> <p>... Pipeline Company, 1250 <span class="hlt">West</span> Century Avenue, Bismarck, North Dakota 58503, or telephone (701) 530-1560, or... Energy Regulatory Commission Williston <span class="hlt">Basin</span> Interstate Pipeline Company; Notice of Request Under Blanket Authorization Take notice that on July 26, 2011, Williston <span class="hlt">Basin</span> Interstate Pipeline Company (Williston...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.gpo.gov/fdsys/pkg/FR-2011-10-18/pdf/2011-26847.pdf','FEDREG'); return false;" href="https://www.gpo.gov/fdsys/pkg/FR-2011-10-18/pdf/2011-26847.pdf"><span>76 FR 64343 - Williston <span class="hlt">Basin</span> Interstate Pipeline Company; Notice of Request Under Blanket Authorization</span></a></p> <p><a target="_blank" href="http://www.gpo.gov/fdsys/browse/collection.action?collectionCode=FR">Federal Register 2010, 2011, 2012, 2013, 2014</a></p> <p></p> <p>2011-10-18</p> <p>... Interstate Pipeline Company, 1250 <span class="hlt">West</span> Century Avenue, Bismark, North Dakota 58503, or call (701) 530-1560 or... Energy Regulatory Commission Williston <span class="hlt">Basin</span> Interstate Pipeline Company; Notice of Request Under Blanket Authorization Take notice that on October 3, 2011 Williston <span class="hlt">Basin</span> Interstate Pipeline Company (Williston...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.gpo.gov/fdsys/pkg/FR-2011-06-02/pdf/2011-13680.pdf','FEDREG'); return false;" href="https://www.gpo.gov/fdsys/pkg/FR-2011-06-02/pdf/2011-13680.pdf"><span>76 FR 31957 - Williston <span class="hlt">Basin</span> Interstate Pipeline Company; Notice of Request Under Blanket Authorization</span></a></p> <p><a target="_blank" href="http://www.gpo.gov/fdsys/browse/collection.action?collectionCode=FR">Federal Register 2010, 2011, 2012, 2013, 2014</a></p> <p></p> <p>2011-06-02</p> <p>... Interstate Pipeline Company, 1250 <span class="hlt">West</span> Century Avenue, Bismarck, North Dakota 58503, or telephone (701) 530... Energy Regulatory Commission Williston <span class="hlt">Basin</span> Interstate Pipeline Company; Notice of Request Under Blanket Authorization Take notice that on May 18, 2011, Williston <span class="hlt">Basin</span> Interstate Pipeline Company (Williston...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://kidshealth.org/en/teens/west-nile.html','NIH-MEDLINEPLUS'); return false;" href="http://kidshealth.org/en/teens/west-nile.html"><span><span class="hlt">West</span> Nile Virus</span></a></p> <p><a target="_blank" href="http://medlineplus.gov/">MedlinePlus</a></p> <p></p> <p></p> <p>... you'll be infected with <span class="hlt">West</span> Nile virus, mosquito bites can still be an itchy nuisance. The CDC advises people to protect themselves from mosquito bites by using mosquito repellent, especially at times ...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://kidshealth.org/en/teens/west-nile.html','NIH-MEDLINEPLUS'); return false;" href="https://kidshealth.org/en/teens/west-nile.html"><span><span class="hlt">West</span> Nile Virus</span></a></p> <p><a target="_blank" href="http://medlineplus.gov/">MedlinePlus</a></p> <p></p> <p></p> <p>... <span class="hlt">West</span> Nile virus has been found in animals, birds, and humans in all continental states in the ... picked up the virus after feeding on infected birds. Pets and other animals can also become infected ...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.epa.gov/statelocalclimate/west-union-green-downtown','PESTICIDES'); return false;" href="https://www.epa.gov/statelocalclimate/west-union-green-downtown"><span><span class="hlt">West</span> Union Green Downtown</span></a></p> <p><a target="_blank" href="http://www.epa.gov/pesticides/search.htm">EPA Pesticide Factsheets</a></p> <p></p> <p></p> <p><span class="hlt">West</span> Union, Iowa, is an EPA Climate Showcase Community. EPA’s Climate Showcase Communities Program helps local governments and tribal nations pilot innovative, cost-effective and replicable community-based greenhouse gas reduction projects.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=purge&pg=4&id=EJ171456','ERIC'); return false;" href="http://eric.ed.gov/?q=purge&pg=4&id=EJ171456"><span>Purge at <span class="hlt">West</span> Valley</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Mack, Warren</p> <p>1977-01-01</p> <p>Tells how the adviser of the student newspaper at <span class="hlt">West</span> Valley College (Saratoga, California) was dismissed after the newspaper published stories based on investigations into alleged wrongdoings by administration members. (GW)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.dtic.mil/docs/citations/ADA347820','DTIC-ST'); return false;" href="http://www.dtic.mil/docs/citations/ADA347820"><span><span class="hlt">West</span> Europe Report</span></a></p> <p><a target="_blank" href="https://publicaccess.dtic.mil/psm/api/service/search/search">DTIC Science & Technology</a></p> <p></p> <p>2007-11-02</p> <p>the majority local KGB directors are almost all ethnic Russians. Though Mos- cow is known to appoint ethnic Turks and Muslims as secretaries general...<span class="hlt">West</span> German in the united Command for Jutland and Schleswig- Holstein . Like the Danes, the <span class="hlt">West</span> Germans have Leopard tanks, but their armored personnel...Social Democratic Party has changed its position a great deal, for example, on the issue of an advanced defense in Schleswig- Holstein . We do not</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/7033824','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/7033824"><span>Seismic stratigraphy or Cape Sorell <span class="hlt">Basin</span>, Tasmania</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Bellow, T.L.</p> <p>1990-05-01</p> <p>Because large new exploration areas have become scarce, the Cape Sorell <span class="hlt">basin</span> has become an increasingly attractive frontier area. Cape Sorell <span class="hlt">basin</span>, located along the western passive continental margin of Tasmania formed as a result of the breakup of eastern Gondwanaland 95{plus minus}5 Ma. An extensional fault system trending <span class="hlt">west</span>-northwest with dip-slip movement down to the south-southwest forms the northern boundary and a second fault system trending north-northwest with oblique slip down to the south-southwest creates the <span class="hlt">basin</span>. Second order extensional faults within the <span class="hlt">basin</span> have created wrench-type flower structures, which are potential migration pathways for hydrocarbons. Nine distinct depositional sequences identified within the Cape Sorell <span class="hlt">basin</span> record the evolution of this passive continental margin. Late Cretaceous-early Paleocene sequences were deposited as the rifting ceased and clastic progradation over the rift terrain began. Relative lowering of sea level occurred during the Paleocene, resulting in extensive channeling of the Late Cretaceous-early Paleocene sequences. A subsequent rise in relative sea level resulted in canyon-fill deposition during the early Paleocene to early Eocene. During the Eocene, sedimentation sufficiently increased to produce a downlapping sediment progradation characterized by deltaic depositional environment. Although interrupted several times by changes in relative sea level and shifting sediment sources, deltaic deposition continued until the late Oligocene. As the rate of clastic sedimentation slowed, carbonate shelf deposition began and has typified the <span class="hlt">basin</span> since late the Oligocene.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2015MarGR..36...61L','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2015MarGR..36...61L"><span>Tectonic differences between eastern and western sub-<span class="hlt">basins</span> of the Qiongdongnan <span class="hlt">Basin</span> and their dynamics</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Liu, Jianbao; Sun, Zhen; Wang, Zhenfeng; Sun, Zhipeng; Zhao, Zhongxian; Wang, Zhangwen; Zhang, Cuimei; Qiu, Ning; Zhang, Jiangyang</p> <p>2015-03-01</p> <p>The central depression of the Qiongdongnan <span class="hlt">Basin</span> can be divided into the eastern and western sub-<span class="hlt">basins</span> by the Lingshui-Songnan paleo-uplift. To the northwest, the orientation of the faults turns from NE, to EW, and later to NW; In the southwest, the orientation of the faults turns from NE, to NNE, and then to NW, making the central depression much wider towards the <span class="hlt">west</span>. In the eastern sub-<span class="hlt">basin</span>, the NE-striking faults and the EW-striking faults made up an echelon, making the central depression turn wider towards the east. Fault activity rates indicate that faulting spreads gradually from both the east and <span class="hlt">west</span> sides to the middle of the <span class="hlt">basin</span>. Hence, extensional stress in the eastern sub-<span class="hlt">basin</span> may be related to the South China Sea spreading system, whereas the western sub-<span class="hlt">basin</span> was more under the effect of the activity of the Red River Fault. The extreme crustal stretching in the eastern sub-<span class="hlt">basin</span> was probably related to magmatic setting. It seems that there are three periods of magmatic events that occurred in the eastern sub-<span class="hlt">basin</span>. In the eastern part of the southern depression, the deformed strata indicate that the magma may have intruded into the strata along faults around T60 (23.3 Ma). The second magmatic event occurred earlier than 10.5 Ma, which induced the accelerated subsidence. The final magmatic event commenced later than 10 Ma, which led to today's high heat flow. As for the western sub-<span class="hlt">basin</span>, the crust thickened southward, and there seemed to be a southeastward lower crustal flow, which happened during continental breakup which was possibly superimposed by a later lower crustal flow induced by the isostatic compensation of massive sedimentation caused by the right lateral slipping of the Red River Fault. Under the huge thick sediment, super pressure developed in the western sub-<span class="hlt">basin</span>. In summary, the eastern sub-<span class="hlt">basin</span> was mainly affected by the South China Sea spreading system and a magma setting, whereas the western sub-<span class="hlt">basin</span> had a closer</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2016ThApC.tmp...39V','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2016ThApC.tmp...39V"><span>Structural characteristics of annual precipitation in Lake Urmia <span class="hlt">basin</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Vaheddoost, Babak; Aksoy, Hafzullah</p> <p>2016-02-01</p> <p>Precipitation as the main process that brings evaporated water from the oceans to the land's surface is a critical role player in Lake Urmia <span class="hlt">basin</span> (Iran). As a hyper-saline lake declared as UNESCO's biosphere reserve in Ramsar Convention, it is dealing with gradual atrophy. In this study, characteristics of annual precipitation in the Lake Urmia <span class="hlt">basin</span> are investigated by means of several statistical measures and tests. Data in 53 meteorological stations widespread across the <span class="hlt">basin</span> for a period of 31 years from 1981 to 2011 are considered for analysis. Fundamental statistical characteristics of the data like mean, maximum, minimum, standard deviation, coefficient of variation, coefficient of skewness, coefficient of kurtosis, auto-correlation and cross-correlation coefficients of the annual precipitation are calculated. Entropy in each station is also calculated with respect to the long-run mean precipitation of the <span class="hlt">basin</span>. Results of the analysis are plotted in contour maps. Several tests for consistency, randomness, trend and best-fit probability distribution function are applied to investigate characteristics of the annual precipitation. Heterogeneity and dependence on local conditions are the main results revealed by this study while consistency and dependency of precipitation on North <span class="hlt">West</span> and <span class="hlt">West</span> of the <span class="hlt">basin</span> are considered as the most effective among other regions. Due to the North-South oriented mountains, a relatively sharp decline in the precipitation from <span class="hlt">West</span> to East can be compared to the gradual decline in precipitation from North to South due to smooth change in the terrain. It is also seen that such characteristics as probability distribution, consistency, randomness, trend, and uncertainty of annual precipitation in the Lake Urmia <span class="hlt">basin</span> become more complex as crossing from <span class="hlt">West</span> to East than crossing from North to South on the <span class="hlt">basin</span>.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/of/1979/1293/report.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/of/1979/1293/report.pdf"><span>Regional flood-frequency relations for <span class="hlt">west</span>-central Florida</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Seijo, M.A.; Giovannelli, R.F.; Turner, J.F.</p> <p>1979-01-01</p> <p>This report presents regional relations for estimating the magnitude and frequency of floods on streams in <span class="hlt">west</span>-central Florida. Flood prediction equations derived cover 20, 5-, 25-, 100-, 200-, and 500-year recurrence intervals. Annual floods for three geographic areas of <span class="hlt">west</span>-central Florida were found to relate significantly to <span class="hlt">basin</span> characteristics. <span class="hlt">Basin</span> characteristics include drainage area, soils index, slope, and lake area. The average standard error of estimate for regional flood relations ranged from 38.4 to 52.1 percent with a mean of 43.5 percent. The average multiple correlation coefficient if 0.94. Regional relations apply to gaged and ungaged sites whose drainage areas are greater than 10 but less than 2,500 square miles. Tables of maximum known floods for 64 streamflow stations used in the analysis are included. Tables comparing station, weighted, and regional flood-peak discharges are also included. (Kosco-USGS)</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_18");'>18</a></li> <li><a href="#" onclick='return showDiv("page_19");'>19</a></li> <li class="active"><span>20</span></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li><a href="#" onclick='return showDiv("page_22");'>22</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_20 --> <div id="page_21" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_19");'>19</a></li> <li><a href="#" onclick='return showDiv("page_20");'>20</a></li> <li class="active"><span>21</span></li> <li><a href="#" onclick='return showDiv("page_22");'>22</a></li> <li><a href="#" onclick='return showDiv("page_23");'>23</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="401"> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/sir/2008/5210/','USGSPUBS'); return false;" href="https://pubs.usgs.gov/sir/2008/5210/"><span>Origin of Meter-Size Granite <span class="hlt">Basins</span> in the Southern Sierra Nevada, California</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Moore, James G.; Gorden, Mary A.; Robinson, Joel E.; Moring, Barry C.</p> <p>2008-01-01</p> <p>Meter-size granite <span class="hlt">basins</span> are found in a 180-km belt extending south from the South Fork of the Kings River to Lake Isabella on the <span class="hlt">west</span> slope of the southern Sierra Nevada, California. Their origin has long been debated. A total of 1,033 <span class="hlt">basins</span> have been inventoried at 221 sites. The <span class="hlt">basins</span> occur on bedrock granitic outcrops at a median elevation of 1,950 m. Median <span class="hlt">basin</span> diameter among 30 of the <span class="hlt">basin</span> sites varies from 89 to 170 cm, median depth is 12 to 63 cm. Eighty percent of the <span class="hlt">basin</span> sites also contain smaller bedrock mortars (~1-2 liters in capacity) of the type used by Native Americans (American Indians) to grind acorns. Features that suggest a manmade origin for the <span class="hlt">basins</span> are: restricted size, shape, and elevation range; common association with Indian middens and grinding mortars; a south- and <span class="hlt">west</span>-facing aspect; presence of differing shapes in distinct localities; and location in a food-rich belt with pleasant summer weather. Volcanic ash (erupted A.D. 1240+-60) in the bottom of several of the <span class="hlt">basins</span> indicates that they were used shortly before ~760 years ago but not thereafter. Experiments suggest that campfires built on the granite will weaken the bedrock and expedite excavation of the <span class="hlt">basins</span>. The primary use of the <span class="hlt">basins</span> was apparently in preparing food, including acorns and pine nuts. The <span class="hlt">basins</span> are among the largest and most permanent artifacts remaining from the California Indian civilization.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/6761979','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/6761979"><span>Structural and stratigraphic evolution of the East Georges Bank <span class="hlt">Basin</span>, offshore Nova Scotia, Canada</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Carswell, A.B. ); Koning, T. ); Hibbs, D.C. )</p> <p>1990-05-01</p> <p>The East Georges Bank <span class="hlt">Basin</span> is located offshore Nova Scotia on the southeastern Canadian continental shelf. The <span class="hlt">basin</span> covers 2.5 million ac and is one of the last undrilled <span class="hlt">basins</span> in North America. The geological interpretation is almost entirely based on 16,000 km of seismic data over the <span class="hlt">basin</span>. Pertinent well control is limited to 10 wells on the US portion of the Georges Bank (<span class="hlt">West</span> Georges Bank <span class="hlt">Basin</span>) and two wells on the Scotian shelf. Seismic-stratigraphic analysis of this data has led to a structural and stratigraphic model for the <span class="hlt">basin</span>. The <span class="hlt">basin</span> formed during the Triassic when the landmass of Pange began separating along rift zones. A prominent Paleozoic basement high, the Yarmouth Arch separated the East Georges Bank <span class="hlt">Basin</span> from the <span class="hlt">West</span> Georges Bank <span class="hlt">Basin</span> and had a dominant influence on sedimentation until the Middle Jurassic. Early synrift sequences consist of lacustrine clastics and shales. Marine incursions began in the late Triassic resulting in massive salt deposits that reflect the restricted extent of the <span class="hlt">basin</span> and the arid Triassic and Early Jurassic climate. Further continental separation during the Early Jurassic resulted in deposition of carbonates and evaporites followed by Middle Jurassic continental shelf carbonates and deltaic sands. During the Middle Jurassic, major growth faulting and halokinesis was initiated by progradation of the deltaic sands. Post Middle Jurassic continental spreading in combination with changing climatic conditions resulted in a steady decline of carbonate sedimentation and dominance of clastic deposition throughout the remaining history of the <span class="hlt">basin</span>.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/6796922','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/6796922"><span>Sedimentation and tectonics in the southern Bida <span class="hlt">Basin</span>, Nigeria: depositional response to varying tectonic context</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Braide, S.P. )</p> <p>1990-05-01</p> <p>The Upper Cretaceous Bida <span class="hlt">basin</span> of central Nigeria is sandwiched between the Precambrian schist belts of the Northern Nigerian massif and the <span class="hlt">West</span> African craton. Of interest is the southern part of the <span class="hlt">basin</span>, which developed in continental settings, because the facies architecture of the sedimentary fill suggests a close relation between sedimentation dynamics and <span class="hlt">basin</span> margin tectonics. This relationship is significant to an understanding of the <span class="hlt">basin</span>'s origin, which has been controversial. A simple sag and rift origin has been suggested, and consequently dominated the negative thinking on the hydrocarbon prospects of the <span class="hlt">basin</span> which were considered poor. This detailed study of the facies indicates rapid <span class="hlt">basin</span>-wide changes from various alluvial fan facies through flood-<span class="hlt">basin</span> and deltaic facies to lacustrine facies. Paleogeographic reconstruction suggests lacustrine environments were widespread and elongate. Lacustrine environments occurred at the <span class="hlt">basin</span>'s axis and close to the margins. This suggests the depocenter must have migrated during the <span class="hlt">basin</span>'s depositional history and subsided rapidly to accommodate the 3.5-km-thick sedimentary fill. Although distinguishing pull-apart <span class="hlt">basins</span> from rift <span class="hlt">basins</span>, based solely on sedimentologic grounds, may be difficult, the temporal migration of the depocenter, as well as the <span class="hlt">basin</span> architecture of upward coarsening cyclicity, show a strong tectonic and structural overprint that suggests a tectonic framework for the Southern Bida <span class="hlt">basin</span> similar in origin to a pull-apart <span class="hlt">basin</span>.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('//www.loc.gov/pictures/collection/hh/item/ca2611.photos.383007p/','SCIGOV-HHH'); return false;" href="//www.loc.gov/pictures/collection/hh/item/ca2611.photos.383007p/"><span>2. GENE CAMP FROM ABOVE COPPER <span class="hlt">BASIN</span>, LOOKING NORTHEAST (NEGATIVE ...</span></a></p> <p><a target="_blank" href="http://www.loc.gov/pictures/collection/hh/">Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey</a></p> <p></p> <p></p> <p>2. GENE CAMP FROM ABOVE COPPER <span class="hlt">BASIN</span>, LOOKING NORTHEAST (NEGATIVE FLARED FROM BADLY SEATED FILM HOLDER, RETAINED BECAUSE OF USEFUL INFORMATION ON GEOGRAPHY OF GENE CAMP). - Gene Pump Plant, South of Gene Wash Reservoir, 2 miles <span class="hlt">west</span> of Whitsett Pump Plant, Parker Dam, San Bernardino County, CA</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('//www.loc.gov/pictures/collection/hh/item/id0443.photos.220087p/','SCIGOV-HHH'); return false;" href="//www.loc.gov/pictures/collection/hh/item/id0443.photos.220087p/"><span>RETENTION <span class="hlt">BASIN</span>. ERECTING REINFORCING STEEL FOR CONCRETE DECK. STACK RISES ...</span></a></p> <p><a target="_blank" href="http://www.loc.gov/pictures/collection/hh/">Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey</a></p> <p></p> <p></p> <p>RETENTION <span class="hlt">BASIN</span>. ERECTING REINFORCING STEEL FOR CONCRETE DECK. STACK RISES AT TOP LEFT. CAMERA FACES <span class="hlt">WEST</span>. INL NEGATIVE NO. 2581. Unknown Photographer, 6/18/1951 - Idaho National Engineering Laboratory, Test Reactor Area, Materials & Engineering Test Reactors, Scoville, Butte County, ID</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/1988E%26PSL..89..387M','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/1988E%26PSL..89..387M"><span>Continental crust under the southern Porcupine Seabight <span class="hlt">west</span> of Ireland</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Makris, J.; Egloff, R.; Jacob, A. W. B.; Mohr, P.; Murphy, T.; Ryan, P.</p> <p>1988-08-01</p> <p>Two new seismic refraction/wide-angle reflection profiles demonstrate that the crust beneath the southern Porcupine Seabight, out to water depths in excess of 4000 m, is of continental type. They also reveal the rifted margin of the Porcupine <span class="hlt">basin</span> on its eastern side. Crustal thickness under the Seabight, inclusive of sediments which are up to 6 km thick, decreases from 23 km in the east to about 10 km at a sharp continent-ocean transition in the <span class="hlt">west</span>.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/7025011','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/7025011"><span>Hydrocarbon potential of <span class="hlt">basins</span> along Australia's southern margin</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Willink, R.J. )</p> <p>1991-03-01</p> <p>Seven discrete sedimentary <span class="hlt">basins</span> are recognized along the southern margin of the Australian continent; namely, from east to <span class="hlt">west</span>, the Gippsland, Bass, Sorell, Otway, Duntroon, Bight, and Bremer. All formed since the Late Jurassic in response to the separation of Australia and Antarctica, and to the opening of the Tasman Sea. Only the Gippsland <span class="hlt">basin</span>, which has proved initial oil reserves exceeding 3.6 billion barrels, is a prolific oil province. The search for oil in the other <span class="hlt">basins</span> has been virtually fruitless despite many similarities between these <span class="hlt">basins</span> and the Gippsland in terms of stratigraphy and structural geology. Rift and drift components are discernible in the sedimentary successions of all <span class="hlt">basins</span> but the precise tectonic controls on respective <span class="hlt">basin</span> formation remain conjectural. The lack of drilling success in the Bremer, Bight, Duntroon, Otway, and Sorell <span class="hlt">basins</span> has been attributed mainly to the paucity of mature, oil-prone source rocks. The common occurrence of stranded bitumens along the entire coastline, however, indicates oil generation. The Bass and Gippsland <span class="hlt">basins</span> are both characterized by excellent oil-prone source rocks developed in Late Cretaceous to Early Tertiary sediments. Limited exploration success in the Bass <span class="hlt">basin</span> is due to poorer reservoir development. The Gippsland <span class="hlt">basin</span> is at a mature stage of exploration whereas the other <span class="hlt">basins</span> are moderately to very sparsely explored. Consequently, there is a comparable potential for undiscovered hydrocarbons in all <span class="hlt">basins</span>. Success in the under-explored <span class="hlt">basins</span> will come only to those prepared to challenge the perception of low prospectivity. Many play types remain to be tested by the drill.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/641008','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/641008"><span>Modeling anomalous surface - wave propagation across the Southern Caspian <span class="hlt">basin</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Priestly, K.F.; Patton, H.J.; Schultz, C.A.</p> <p>1998-01-09</p> <p>The crust of the south Caspian <span class="hlt">basin</span> consists of 15-25 km of low velocity, highly attenuating sediment overlying high velocity crystalline crust. The Moho depth beneath the <span class="hlt">basin</span> is about 30 km as compared to about 50 km in the surrounding region. Preliminary modeling of the phase velocity curves shows that this thick sediments of the south Caspian <span class="hlt">basin</span> are also under-lain by a 30-35 km thick crystalline crust and not by typical oceanic crust. This analysis also suggest that if the effect of the over-pressuring of the sediments is to reduce Poissons` ratio, the over-pressured sediments observed to approximately 5 km do not persist to great depths. It has been shown since 1960`s that the south Caspian <span class="hlt">basin</span> blocks the regional phase Lg. Intermediate frequency (0.02-0.04 Hz) fundamental mode Raleigh waves propagating across the <span class="hlt">basin</span> are also severely attenuated, but the low frequency surface waves are largely unaffected. This attenuation is observed along the both east-to-<span class="hlt">west</span> and <span class="hlt">west</span>-to-east great circle paths across the <span class="hlt">basin</span>, and therefore it cannot be related to a seismograph site effect. We have modeled the response of surface waves in an idealized rendition of the south Caspian <span class="hlt">basin</span> model using a hybrid normal mode / 2-D finite difference approach. To gain insight into the features of the <span class="hlt">basin</span> which cause the anomalous surface wave propagation, we have varied parameters of the <span class="hlt">basin</span> model and computed synthetic record sections to compare with the observed seismograms. We varied the amount of mantel up-warp, the shape of the boundaries, the thickness and shear wave Q of the sediments and mantle, and the depth of the water layer. Of these parameters, the intermediate frequency surface waves are most severely affected by the sediments thickness and shear wave attenuation. fundamental mode Raleigh wave phase velocities measure for paths crossing the <span class="hlt">basin</span> are extremely low.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19750017468','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19750017468"><span>A feasibility study for an emergency medical services system to serve the Permian <span class="hlt">basin</span> in the state of Texas</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p></p> <p>1975-01-01</p> <p>The development of an Emergency Medical Services System grant application for the Permian <span class="hlt">Basin</span> Region of <span class="hlt">West</span> Texas is described along with the application of NASA-developed technology. Conclusions and recommendations are included.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/5749865','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/5749865"><span>Hydrocarbon habitat of the Tuz Golu <span class="hlt">basin</span>, central Anatolia, Turkey</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>More, C.; Bird, P.R.; Clark-Lowes, D.D. )</p> <p>1988-08-01</p> <p>The Tuz Golu <span class="hlt">basin</span> (TGB) of central Anatolia has been interpreted as a northwest-southeast-aligned terraced forearc <span class="hlt">basin</span> that accumulated a Maastrichtian to Holocene, predominantly terrigenous, sedimentary succession. Evidence is presented from an integrated study incorporating all seismic, gravity, and well data for the following <span class="hlt">basin</span> evolution. (1) Late Cretaceous sedimentation on the <span class="hlt">west</span> of the Kirsehir block with a diverse assemblage of facies including terrestrial, possible sabkha, shallow marine carbonate and turbidite deposits; (2) eastward subduction of Neotethys beginning in the Maastrichtian and development of the Tuz Golu as a forearc <span class="hlt">basin</span>; (3) deposition of a thick Paleocene to Eocene flysch succession; (4) late Eocene inversion of the thick flysch section along the central axis of the <span class="hlt">basin</span> and development of flanking shallow <span class="hlt">basins</span>; (5) late Eocene-Oligocene emergence with deposition of evaporites and red beds in a restricted <span class="hlt">basin</span>, followed by suturing of continental blocks, uplift, and erosion; (6) dextral displacement along the Kochisar fault; (7) Oligocene-Miocene diapirism of Eocene salt along major faults in the western shallow <span class="hlt">basin</span>; and (8) terrestrial and lacustrine sedimentation in the neotectonic TGB. Of the 22 wells drilled in the TGB, four contained oil or gas shows from formations of Paleocene to Miocene age. Potential shale source rocks occur in the Upper Cretaceous, Paleocene, and Eocene sections. Cretaceous rudist reefs and Paleocene/Eocene sandstones provide target reservoirs, while Eocene salt represents an ideal seal. Late Eocene deformation created the major trap-forming structures of the <span class="hlt">basin</span>.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2014EGUGA..1612814B','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2014EGUGA..1612814B"><span>The southwestern Nansen <span class="hlt">Basin</span>: Crustal stretching and sea floor spreading</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Berglar, Kai; Ehrhardt, Axel; Damm, Volkmar; Heyde, Ingo; Schreckenberger, Bernd; Barckhausen, Udo</p> <p>2014-05-01</p> <p>New geophysical data were collected in August/September 2013 north of Svalbard in the zone from the North Barents shelf towards the oceanic Nansen <span class="hlt">Basin</span>. We acquired 1056 km of multi-channel seismic data, 2658 km of magnetic data and more than 5000 km of gravity, bathymetric and sediment echosounder data. In the east of the working area, the transition from the Yermak Plateau to the Nansen <span class="hlt">Basin</span> is characterized by block faulting and well developed syn-rift <span class="hlt">basins</span>. A large crustal block located about 80 km east of the Yermak Plateau and 120 km north of the slope of the Barents shelf indicates extensive rifting and east-<span class="hlt">west</span> directed crustal stretching and the absence of oceanic crust in that area. A different picture is found north of Kvitoya Island, in the western part of the working area. There, the slope of the Barents shelf is very steep and a distinct continent-ocean-boundary seems to be located directly at the foot of the slope where we interpret oceanic crust characterized by irregular topography based on the multi-channel seismic data. This will be tested by an analysis of the gravity and magnetic data which is currently work in progress. The combination of east-<span class="hlt">west</span>-directed continental stretching east of the Yermak Plateau and adjacent oceanic crust to the <span class="hlt">west</span> points to an opening of the southwesternmost part of the Nansen <span class="hlt">Basin</span> prior to the spreading of the Gakkel Ridge, possibly related to the opening of the Amerasian <span class="hlt">Basin</span>.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('//www.loc.gov/pictures/collection/hh/item/la0164.photos.073625p/','SCIGOV-HHH'); return false;" href="//www.loc.gov/pictures/collection/hh/item/la0164.photos.073625p/"><span>12. (Credit CBF) <span class="hlt">West</span> end of McNeil Street Station in ...</span></a></p> <p><a target="_blank" href="http://www.loc.gov/pictures/collection/hh/">Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey</a></p> <p></p> <p></p> <p>12. (Credit CBF) <span class="hlt">West</span> end of McNeil Street Station in November 1911. The settling <span class="hlt">basins</span> are visible on the far right. In the foreground is a pile of filter sand and several barrels of chemicals (probably lime or alum). The box car is delivering chemicals to storage in the <span class="hlt">west</span> wing of the station. - McNeil Street Pumping Station, McNeil Street & Cross Bayou, Shreveport, Caddo Parish, LA</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/30495','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/30495"><span>Geohydrology of the southwest alluvial <span class="hlt">basins</span> regional aquifer- systems analysis, parts of Colorado, New Mexico, and Texas</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Wilkins, D.W.</p> <p>1986-01-01</p> <p>The Southwest Alluvial <span class="hlt">Basins</span> study is part of the National Regional Aquifer-Systems Analysis program. Twenty-two structural <span class="hlt">basins</span> extend from the San Luis <span class="hlt">Basin</span> in southern Colorado to the Presidio <span class="hlt">Basin</span> in western Texas. Closed surface-water <span class="hlt">basins</span> <span class="hlt">west</span> of the Guadalupe Mountains and east of the Peloncillo Mountains are included in the study. The study area is bounded on the east by predominately Precambrian and Paleozoic rocks. Tertiary and Quaternary volcanics also are present. Tertiary and Quaternary volcanic rocks, and also Mesozoic rocks <span class="hlt">west</span> of the Espanola and Albuquerque-Belen <span class="hlt">Basins</span>, form the <span class="hlt">west</span> boundary. The east and <span class="hlt">west</span> boundary units converge at the north end of the study area to form the north boundary. The study area extends south to the international border between the United States and Mexico. The Santa Fe Group sediments of late Oligocene to middle Pleistocene age comprise the main aquifer in the area. Estimated maximum depths of sediments in the rift <span class="hlt">basins</span> range from 8,000 ft in the Tularosa-Hueco <span class="hlt">Basin</span> to 30,000 ft in the San Luis <span class="hlt">Basin</span>. The average thickness of sediments in closed <span class="hlt">basins</span> is about 4,000 ft. Santa Fe deposits are composed of layers of gravel, sand, silt, and clay interbedded with local volcanic lows of tuffs. Lacustrine deposits are more prevalent in the closed <span class="hlt">basins</span>. Wells produce as much as 2,000 gal of water/min. Poteniometric-surface altitudes for 1971-82 indicate that water recharges in the highland areas around the <span class="hlt">basins</span> and discharges in the center of valleys. Water generally flows from the east and <span class="hlt">west</span> southward along the axis of the valleys. Groundwater quality for the region has been zoned into calcium sulfate, calcium chloride, magnesium sulfate, magnesium chloride; sodium sulfate, sodium chloride; sodium bicarbonate; and calcium bicarbonate, magnesium bicarbonate types. (USGS)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/gf/072/text.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/gf/072/text.pdf"><span>Charleston folio, <span class="hlt">West</span> Virginia</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Campbell, Marius R.</p> <p>1901-01-01</p> <p>The Charleston quadrangle embraces an area of 938 square miles, extending from latitude 38° on the south to 38°30' to the north, and from longitude 81° 30' on the east to 82° on the <span class="hlt">west</span>.  The quadrangle is located in the State of <span class="hlt">West</span> Virginia, including parts of the counties of Kanawha, Boone, Putnam, and Lincoln, and is named from the city of Charleston, which is situated at the junction of Elk and Kanawha rivers, in the north-eastern part of the quadrangle.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.youtube.com/watch?v=ORm7xQ9oRBo','SCIGOVIMAGE-NASA'); return false;" href="http://www.youtube.com/watch?v=ORm7xQ9oRBo"><span>GOES-<span class="hlt">West</span> Shows U.S. <span class="hlt">West</span>'s Record Rainfall</span></a></p> <p><a target="_blank" href="http://www.nasa.gov/multimedia/videogallery/index.html">NASA Video Gallery</a></p> <p></p> <p></p> <p>A new time-lapse animation of data from NOAA's GOES-<span class="hlt">West</span> satellite provides a good picture of why the U.S. <span class="hlt">West</span> Coast continues to experience record rainfall. The new animation shows the movement o...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('//www.loc.gov/pictures/collection/hh/item/ky0318.photos.037759p/','SCIGOV-HHH'); return false;" href="//www.loc.gov/pictures/collection/hh/item/ky0318.photos.037759p/"><span>315. 1730 <span class="hlt">WEST</span> CHESTNUT STREET, PART OF <span class="hlt">WEST</span> SIDE, AND ...</span></a></p> <p><a target="_blank" href="http://www.loc.gov/pictures/collection/hh/">Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey</a></p> <p></p> <p></p> <p>315. 1730 <span class="hlt">WEST</span> CHESTNUT STREET, PART OF <span class="hlt">WEST</span> SIDE, AND 617, PART OF NORTH SIDE - Russell Neighborhood, Bounded by Congress & Esquire Alley, Fifteenth & Twenty-first Streets, Louisville, Jefferson County, KY</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('//www.loc.gov/pictures/collection/hh/item/ca3167.photos.201901p/','SCIGOV-HHH'); return false;" href="//www.loc.gov/pictures/collection/hh/item/ca3167.photos.201901p/"><span>INTERIOR OF <span class="hlt">WEST</span> SPAN LOOKING <span class="hlt">WEST</span> (SHADOW OF VERTICAL LAPS ...</span></a></p> <p><a target="_blank" href="http://www.loc.gov/pictures/collection/hh/">Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey</a></p> <p></p> <p></p> <p>INTERIOR OF <span class="hlt">WEST</span> SPAN LOOKING <span class="hlt">WEST</span> (SHADOW OF VERTICAL LAPS PLACED ON ZONE III; ASPHALT ZONE IX) - Honey Run Bridge, Spanning Butte Creek, bypassed section of Honey Run Road (originally Carr Hill Road), Paradise, Butte County, CA</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('//www.loc.gov/pictures/collection/hh/item/al0682.photos.320910p/','SCIGOV-HHH'); return false;" href="//www.loc.gov/pictures/collection/hh/item/al0682.photos.320910p/"><span>35. DETAIL VIEW, <span class="hlt">WEST</span> WINDOW IN <span class="hlt">WEST</span> ELEVATION GABLE (NOTE: ...</span></a></p> <p><a target="_blank" href="http://www.loc.gov/pictures/collection/hh/">Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey</a></p> <p></p> <p></p> <p>35. DETAIL VIEW, <span class="hlt">WEST</span> WINDOW IN <span class="hlt">WEST</span> ELEVATION GABLE (NOTE: THE MOLDED STRINGCOURSE THAT PROJECTS FROM THE BASE OF THE FIRST FLOOR WINDOW ARCH AND VISIBLE WATERTABLE) - Kenworthy Hall, State Highway 14 (Greensboro Road), Marion, Perry County, AL</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('//www.loc.gov/pictures/collection/hh/item/fl0348.photos.377660p/','SCIGOV-HHH'); return false;" href="//www.loc.gov/pictures/collection/hh/item/fl0348.photos.377660p/"><span>VIEW <span class="hlt">WEST</span> NORTHERN PORTION OF PADDOCK LOCATED <span class="hlt">WEST</span> OF ...</span></a></p> <p><a target="_blank" href="http://www.loc.gov/pictures/collection/hh/">Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey</a></p> <p></p> <p></p> <p>VIEW <span class="hlt">WEST</span> - NORTHERN PORTION OF PADDOCK LOCATED <span class="hlt">WEST</span> OF GRANDSTAND SECTION. WALKING RING TO LEFT OF FRAME AND SUNNY JIM LANE IN BACKGROUND: CD-W. - Hialeah Park Race Track, East Fourth Avenue, Hialeah, Miami-Dade County, FL</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('//www.loc.gov/pictures/collection/hh/item/md1334.photos.320159p/','SCIGOV-HHH'); return false;" href="//www.loc.gov/pictures/collection/hh/item/md1334.photos.320159p/"><span>7. <span class="hlt">WEST</span> PORTAL AND DECK VIEW, FROM <span class="hlt">WEST</span>, SHOWING PORTAL ...</span></a></p> <p><a target="_blank" href="http://www.loc.gov/pictures/collection/hh/">Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey</a></p> <p></p> <p></p> <p>7. <span class="hlt">WEST</span> PORTAL AND DECK VIEW, FROM <span class="hlt">WEST</span>, SHOWING PORTAL CONFIGURATION AND LATERAL BRACING, STEEL MESH FLOOR, AND METAL RAILINGS - Glendale Road Bridge, Spanning Deep Creek Lake on Glendale Road, McHenry, Garrett County, MD</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_19");'>19</a></li> <li><a href="#" onclick='return showDiv("page_20");'>20</a></li> <li class="active"><span>21</span></li> <li><a href="#" onclick='return showDiv("page_22");'>22</a></li> <li><a href="#" onclick='return showDiv("page_23");'>23</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_21 --> <div id="page_22" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_20");'>20</a></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li class="active"><span>22</span></li> <li><a href="#" onclick='return showDiv("page_23");'>23</a></li> <li><a href="#" onclick='return showDiv("page_24");'>24</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="421"> <li> <p><a target="_blank" onclick="trackOutboundLink('//www.loc.gov/pictures/collection/hh/item/ia0178.photos.066579p/','SCIGOV-HHH'); return false;" href="//www.loc.gov/pictures/collection/hh/item/ia0178.photos.066579p/"><span>20. DETAIL OF <span class="hlt">WEST</span> ANCHOR SPAN, CANTILEVER ARMS AND <span class="hlt">WEST</span> ...</span></a></p> <p><a target="_blank" href="http://www.loc.gov/pictures/collection/hh/">Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey</a></p> <p></p> <p></p> <p>20. DETAIL OF <span class="hlt">WEST</span> ANCHOR SPAN, CANTILEVER ARMS AND <span class="hlt">WEST</span> HALF OF SUSPENDED SPAN OF THROUGH TRUSS. VIEW TO NORTHEAST. - MacArthur Bridge, Spanning Mississippi River on Highway 34 between IA & IL, Burlington, Des Moines County, IA</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('//www.loc.gov/pictures/collection/hh/item/mn0548.photos.342985p/','SCIGOV-HHH'); return false;" href="//www.loc.gov/pictures/collection/hh/item/mn0548.photos.342985p/"><span>6. <span class="hlt">West</span> side, details of <span class="hlt">west</span> truss web and floorbeam ...</span></a></p> <p><a target="_blank" href="http://www.loc.gov/pictures/collection/hh/">Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey</a></p> <p></p> <p></p> <p>6. <span class="hlt">West</span> side, details of <span class="hlt">west</span> truss web and floor-beam bracing by steel plates and steel rod; looking northeast - Bridge No. 92101, Spanning Pike River at County Highway 373, Embarrass, St. Louis County, MN</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('//www.loc.gov/pictures/collection/hh/item/ca1868.photos.033712p/','SCIGOV-HHH'); return false;" href="//www.loc.gov/pictures/collection/hh/item/ca1868.photos.033712p/"><span>9. <span class="hlt">WEST</span> FACE OF OLD THEODOLITE BUILDING; <span class="hlt">WEST</span> FACE OF ...</span></a></p> <p><a target="_blank" href="http://www.loc.gov/pictures/collection/hh/">Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey</a></p> <p></p> <p></p> <p>9. <span class="hlt">WEST</span> FACE OF OLD THEODOLITE BUILDING; <span class="hlt">WEST</span> FACE OF EAST PHOTO TOWER IN BACKGROUND - Vandenberg Air Force Base, Space Launch Complex 3, Launch Pad 3 East, Napa & Alden Roads, Lompoc, Santa Barbara County, CA</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('//www.loc.gov/pictures/collection/hh/item/ny1628.photos.116578p/','SCIGOV-HHH'); return false;" href="//www.loc.gov/pictures/collection/hh/item/ny1628.photos.116578p/"><span>51. Third Floor, Lake Forest, <span class="hlt">west</span> center room, looking <span class="hlt">west</span>, ...</span></a></p> <p><a target="_blank" href="http://www.loc.gov/pictures/collection/hh/">Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey</a></p> <p></p> <p></p> <p>51. Third Floor, Lake Forest, <span class="hlt">west</span> center room, looking <span class="hlt">west</span>, part of original Forest Cottage as of 1901. - Lake Placid Club, Forest Wing, East side of Mirror Lake Drive, North of State Route 86 & Main, North Elba, Essex County, NY</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('//www.loc.gov/pictures/collection/hh/item/ca1276.photos.017965p/','SCIGOV-HHH'); return false;" href="//www.loc.gov/pictures/collection/hh/item/ca1276.photos.017965p/"><span>22. DETAIL, <span class="hlt">WEST</span> ABUTMENT AND SHOE, <span class="hlt">WEST</span> ARCH, UPSTREAM SIDE ...</span></a></p> <p><a target="_blank" href="http://www.loc.gov/pictures/collection/hh/">Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey</a></p> <p></p> <p></p> <p>22. DETAIL, <span class="hlt">WEST</span> ABUTMENT AND SHOE, <span class="hlt">WEST</span> ARCH, UPSTREAM SIDE File photo, Caltrans Office of Structures Maintenance, August, 1953. Photographer unknown. Photocopy of photograph. - San Roque Canyon Bridge, State Highway 192, Santa Barbara, Santa Barbara County, CA</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('//www.loc.gov/pictures/collection/hh/item/md1451.photos.320002p/','SCIGOV-HHH'); return false;" href="//www.loc.gov/pictures/collection/hh/item/md1451.photos.320002p/"><span>9. <span class="hlt">West</span> elevation, <span class="hlt">west</span> end of south wing wall, south ...</span></a></p> <p><a target="_blank" href="http://www.loc.gov/pictures/collection/hh/">Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey</a></p> <p></p> <p></p> <p>9. <span class="hlt">West</span> elevation, <span class="hlt">west</span> end of south wing wall, south abutment and south railing panel looking east - Western Maryland Railway Bridge, Spanning Maryland Route 51 at Spring Gap, Cumberland, Allegany County, MD</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('//www.loc.gov/pictures/collection/hh/item/md1451.photos.320003p/','SCIGOV-HHH'); return false;" href="//www.loc.gov/pictures/collection/hh/item/md1451.photos.320003p/"><span>10. <span class="hlt">West</span> elevation, <span class="hlt">west</span> end of north wing wall, top ...</span></a></p> <p><a target="_blank" href="http://www.loc.gov/pictures/collection/hh/">Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey</a></p> <p></p> <p></p> <p>10. <span class="hlt">West</span> elevation, <span class="hlt">west</span> end of north wing wall, top of north abutment and oblique of railing panels looking northwest - Western Maryland Railway Bridge, Spanning Maryland Route 51 at Spring Gap, Cumberland, Allegany County, MD</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2016EGUGA..1814961L','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2016EGUGA..1814961L"><span>Geodynamics of the Sivas <span class="hlt">Basin</span> (Turkey): from a forearc <span class="hlt">basin</span> to a retroarc foreland <span class="hlt">basin</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Legeay, Etienne; Ringenbach, Jean-Claude; Kergaravat, Charlie; Callot, Jean-Paul; Mohn, Geoffroy; Kavak, Kaan</p> <p>2016-04-01</p> <p> the north-dipping subduction of the Southern Neotethys beneath the Tauride microcontinent. The Late Eocene records a quick shallowing and the deposition of a thick evaporitic level. The Oligo-Miocene succession is characterized by fluvio-lacustrine deposition, and short lived marine transgression from the East, dated as Chattian -Aquitanian. The post-salt evolution can be divided into three areas with different tectonic deformation styles. The western part of the Sivas <span class="hlt">Basin</span> presents an East-<span class="hlt">West</span> elongated trend with classical fold-and-thrust belt geometry, local salt remobilization and minor halokinesis. In contrast, the central part near Sivas, exhibits polygonal distribution of evaporates, which reveals two generations of minibasins, separated by the emplacement of a salt canopy during mid-Oligocene time. Toward the East a primary continental sequence and salt canopy conducted to the deposition of thick halokinetic Oligo-Miocene <span class="hlt">basins</span>. We conclude that the Sivas <span class="hlt">Basin</span> represents a Paleogene foreland, characterized by a north verging fold-and-thrust belt, induced by retroarc shortening along the northern margin of the Tauride Platform. In contrast, the Oligo-Miocene sequence was deformed by south-verging back-thrust, above a triangular zone and passive roof detachments in evaporites.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('//www.loc.gov/pictures/collection/hh/item/pa2225.photos.049511p/','SCIGOV-HHH'); return false;" href="//www.loc.gov/pictures/collection/hh/item/pa2225.photos.049511p/"><span>5. View <span class="hlt">West</span>. <span class="hlt">West</span> side and rear elevations of c. ...</span></a></p> <p><a target="_blank" href="http://www.loc.gov/pictures/collection/hh/">Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey</a></p> <p></p> <p></p> <p>5. View <span class="hlt">West</span>. <span class="hlt">West</span> side and rear elevations of c. 1890 first rear addition; partial north rear elevation of c. 1900 side ell addition; and north rear and <span class="hlt">west</span> side elevation of final rear addition of c. 1940. - Vaughn Chevrolet Building, 101-109 East Main Street, Monongahela, Washington County, PA</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70017906','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70017906"><span>Sources of dissolved salts in the central Murray <span class="hlt">Basin</span>, Australia</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Jones, B.F.; Hanor, J.S.; Evans, W.R.</p> <p>1994-01-01</p> <p>Large areas of the Australian continent contain scattered saline lakes underlain by shallow saline groundwaters of regional extent and debated origin. The normative salt composition of subsurface pore fluids extracted by squeezing cores collected during deep drilling at Piangil <span class="hlt">West</span> 2 in the central Murray <span class="hlt">Basin</span> in southeastern Australia, and of surface and shallow subsurface brines produced by subaerial evaporation in the nearby Lake Tyrrell systems, helps constrain interpretation of the origin of dissolved solutes in the groundwaters of this part of the continent. Although regional sedimentation in the Murray <span class="hlt">Basin</span> has been dominantly continental except for a marine transgression in Oligocene-Pliocene time, most of the solutes in saline surface and subsurface waters in the central Murray <span class="hlt">Basin</span> have a distinctly marine character. Some of the Tyrrell waters, to the southwest of Piangil <span class="hlt">West</span> 2, show the increase in NaCl and decrease in sulfate salts expected with evaporative concentration and gypsum precipitation in an ephemeral saline lake or playa environment. The salt norms for most of the subsurface saline waters at Piangil <span class="hlt">West</span> 2 are compatible with the dilution of variably fractionated marine bitterns slightly depleted in sodium salts, similar to the more evolved brines at Lake Tyrrell, which have recharged downward after evaporation at the surface and then dissolved a variable amount of gypsum at depth. Apparently over the last 0.5 Ma significant quantities of marine salt have been blown into the Murray <span class="hlt">Basin</span> as aerosols which have subsequently been leached into shallow regional groundwater systems <span class="hlt">basin</span>-wide, and have been transported laterally into areas of large evaporative loss in the central part of the <span class="hlt">basin</span>. This origin for the solutes helps explain why the isotopic compositions of most of the subsurface saline waters at Piangil <span class="hlt">West</span> 2 have a strong meteoric signature, whereas the dissolved salts in these waters appear similar to a marine assemblage</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=alternative+AND+energy+AND+source&pg=5&id=EJ931037','ERIC'); return false;" href="http://eric.ed.gov/?q=alternative+AND+energy+AND+source&pg=5&id=EJ931037"><span>A <span class="hlt">West</span> African Link</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Cook, Angela; Davies, Penny</p> <p>2003-01-01</p> <p>The authors visited Ghana in <span class="hlt">West</span> Africa to strengthen a link established the previous year as part of Channel 4's "On the Line" project. The initial link established in 1999/2000 was between an all-age special school in Enfield and a similar school in Accra. Over the course of that year further partnerships were created between five UK…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=professional+AND+nursing+AND+organizations&pg=4&id=ED508061','ERIC'); return false;" href="http://eric.ed.gov/?q=professional+AND+nursing+AND+organizations&pg=4&id=ED508061"><span><span class="hlt">West</span> Virginia and SREB</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Southern Regional Education Board (SREB), 2009</p> <p>2009-01-01</p> <p>The Southern Regional Education Board (SREB) is a nonprofit organization that works collaboratively with <span class="hlt">West</span> Virginia and 15 other member states to improve education at every level--from pre-K to postdoctoral study--through many effective programs and initiatives. SREB's "Challenge to Lead" Goals for Education, which call for the region…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://familydoctor.org/condition/west-nile-virus/?adfree=true','NIH-MEDLINEPLUS'); return false;" href="https://familydoctor.org/condition/west-nile-virus/?adfree=true"><span><span class="hlt">West</span> Nile Virus</span></a></p> <p><a target="_blank" href="http://medlineplus.gov/">MedlinePlus</a></p> <p></p> <p></p> <p>... spread by mosquitoes. Mosquitoes become infected by biting birds that carry the virus. People can get <span class="hlt">West</span> Nile virus when an infected mosquito bites them. This happens most often in the warm-weather months of spring, summer and early fall. You ...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=walcott&id=EJ118532','ERIC'); return false;" href="http://eric.ed.gov/?q=walcott&id=EJ118532"><span><span class="hlt">West</span> Indian Gallery</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Ramsaran, J. A.</p> <p>1975-01-01</p> <p>Reviews the poetry of Derek Walcott, a native of the <span class="hlt">West</span> Indies, whose new volume 'Another Life' more resembles the poet-artists commentary on a gallery of scenes and portraits in Melvin Tolson's 'The Harlem Gallery' than anything else that has come from the English speaking Caribbean in the post-war period. (Author/JM)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2013JAfES..79..157N','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2013JAfES..79..157N"><span>Campano-Maastrichtian foraminifera from onshore sediments in the Rio del Rey <span class="hlt">Basin</span>, Southwest Cameroon</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Njoh, Oliver Anoh; Victor, Obiosio; Christopher, Agyingi</p> <p>2013-03-01</p> <p>Campanian-Maastrichtian marine sediments outcrop in five genetically linked sedimentary <span class="hlt">basins</span> along the <span class="hlt">West</span> African coast in the Gulf of Guinea, from the Douala <span class="hlt">Basin</span> in Cameroon to the Anambra <span class="hlt">Basin</span> in Nigeria. These sediments in the more centrally located Rio del Rey <span class="hlt">Basin</span> have been the least studied. Therefore, the geologic history of this region has merely been speculative. The Rio del Rey <span class="hlt">Basin</span> like the adjacent Niger Delta is producing hydrocarbon from the offshore Tertiary sedimentary interval in which all studies have been focused, neglecting the onshore Cretaceous sediments. Outcrops in the <span class="hlt">basin</span> are rare, small and highly weathered. Samples from some of these sediments have yielded a few Planktonic and dominantly benthonic foraminiferal assemblages. The long-ranging heterohelix and hedbergellids characterized the planktics while the species Afrobolivina afra which is a well known diagnostic taxon for Campanian-Maastrichtian sediments in <span class="hlt">West</span> African <span class="hlt">basins</span> clearly dominate the benthic assemblage. Its occurrence in association with other Upper Cretaceous forms such as Bolivina explicata, Praebulimina exiqua, Gabonita lata, Ammobaculites coprolithiformis amongst others, formed the basis on which this age was assigned to the sediments sampled from the Rio del Rey <span class="hlt">Basin</span>. Hence, this work has undoubtedly established the much needed link in this regional geologic history and correlates these sediments with the Logbaba and Nkporo Formations in the Douala <span class="hlt">Basin</span> in Cameroon and the southeastern Nigerian Sedimentary <span class="hlt">Basins</span>. Thus, these units were all deposited during this same geologic period and probably controlled by the same geologic event.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2012EGUGA..14.4462A','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2012EGUGA..14.4462A"><span>Inversion tectonics in the Neogene <span class="hlt">basins</span> of Tuscany (Northern Apennines, Italy): Insights from the Pisa-Viareggio <span class="hlt">basin</span>.</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Argnani, A.; Rogledi, S.</p> <p>2012-04-01</p> <p>Several sedimentary <span class="hlt">basins</span> are located in the internal portion of the Northern Apennines, bordering the eastern side of the Northern Tyrrhenian sea. These <span class="hlt">basins</span> trend almost parallel to the Apennine range and are filled by Neogene sediments with thickness ranging between few 100's m to few km (Martini et al., 2001). Sediments belonging to these <span class="hlt">basins</span> crop out extensively in western Tuscany, often appearing heavily deformed. Although classically interpreted as extensional <span class="hlt">basins</span> (e.g., Martini and Sagri, 1993 and references therein), some papers call for an initial thrust-related origin (Finetti et al., 2001; Bonini and Sani, 2002), and the long-lasting debate about the origin of the Neogene <span class="hlt">basins</span> of Tuscany is still ongoing (cfr. Brogi 2011 and Sani et al., 2004). This contribution aims at presenting the case of the Pisa-Viareggio <span class="hlt">basin</span>, which is the northernmost one among the large <span class="hlt">basins</span> of Tuscany (Pascucci et al., 2007). This <span class="hlt">basin</span> straddles the coastline and has been investigated through the interpretation of a grid of industrial seismic profiles covering the Pisa plain and tied to exploration wells. In the Pisa-Viareggio <span class="hlt">basin</span> seismic profiles show a <span class="hlt">west</span>-dipping listric extensional fault that bounds the <span class="hlt">basin</span> to the east, supporting an extensional origin. The <span class="hlt">basin</span> is filled with up to 3 seconds of upper Messinian to Quaternary sediments, and extension mostly occurred during late Messinian-early Pliocene, although continuing with reduced intensity till the Quaternary. The southern part of this <span class="hlt">basin</span> shows a superimposed contractional deformation (tectonic inversion), that progressively increases to the south, where the <span class="hlt">basin</span> appears completely overturned and eroded in the Livorno Mountains. The <span class="hlt">basin</span>-boundary fault trends roughly NNW-SSE and is buried in the Quaternary sediments of the Pisa plain, but it turns rather abruptly to N-S and NNE-SSW in the south, near Livorno. Inspection of detailed geological maps (Lazzarotto et al., 1990) suggests that the</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/7247728','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/7247728"><span>Geologic evolution of the Bering Sea Komandorksy deep <span class="hlt">basin</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Bogdanov, N.A.</p> <p>1986-07-01</p> <p>The deep-water Komandorsky <span class="hlt">basin</span> is located in the southwestern part of the Bering Sea. On the east, it is separated from the Aleutian <span class="hlt">basin</span> by the submerged Shirshov Ridge; on the <span class="hlt">west</span>, it is bordered by structures of the north Kamchatka accretionary prism. The Komandorsky <span class="hlt">basin</span> is characterized by strongly dissected relief of it acoustic basement, which is overlain by a 1.5 to 2.0-km thick sedimentary cover. The western part of the <span class="hlt">basin</span> is occupied by a rift zone, which is characterized by modern seismicity and high heat flow. It is considered to be the axial zone of Miocene-Pleistocene spreading. On the north terrace of the Komandorsky island arc, traced active volcanos provide evidence that subduction is occurring under the arc from the north. The spreading rift zone is reflected on the continent in Miocene-Pleistocene volcanic rocks, characterized by typical oceanic tholeiitic composition. The Komandorsky <span class="hlt">basin</span> formed as a result of spreading during the Maestrichtian. Spreading within the <span class="hlt">basin</span> occurred during the early and middle Oligocene and the late Miocene. East and <span class="hlt">west</span> of the spreading axis, accretionary prisms formed. The latter are observed along the western flank of the Shirshov Ridge and on the eastern sides of the Kamchatka Peninsula and Koraginsky Island.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/6068023','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/6068023"><span>Hydrocarbon generation and migration modeling, Eastern Venezuela <span class="hlt">Basin</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Chigne, N.; Russomanno, F.; Sanchez, H.; Callejon, A.; Finno, A.; Escalona, N. )</p> <p>1993-02-01</p> <p>The Eastern Venezuela <span class="hlt">Basin</span>, with an area of approximately 180,000 km[sup 2], contains important giant oil fields as well as large unexplored areas. A passive margin originated during the Cretaceous and early Tertiary epochs, followed by emplacement of allochthonous thrust sheets coming from the <span class="hlt">west</span> and development of a foreland <span class="hlt">basin</span>. Therefore, thrusting, <span class="hlt">basin</span> formation and structures are progressively younger (Ologocene to middle Miocene) from <span class="hlt">west</span> to east. Heat flow has increased during the Tertiary to recent epochs from 40 to 100 mW/m[sup 2], only in the north-central part of the <span class="hlt">basin</span>, as interpreted from present maturity data. The first stage of oil generation occurred during late Eocene and early Oligocene in the northernmost part of the <span class="hlt">basin</span>. Most of oil migrated more than 150 km southernward up the undeformed homocline of the passive margin. Thus forming the Orinoco Oil Belt. Younger kitchens were later formed from north to south during Early Miocene to Recent. Oils from these kitchens were trapped by increasing tectonic deformation before reaching the southern border of the <span class="hlt">basin</span>. Light and medium gravity oil fields were discovered in this tectonically complex area. This study has helped assess the hydrocarbon potential of as yet unexplored areas, by taking into account important quantitative factors previously not considered.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.cdc.gov/westnile/faq/genQuestions.html','NIH-MEDLINEPLUS'); return false;" href="https://www.cdc.gov/westnile/faq/genQuestions.html"><span>FAQ: General Questions about <span class="hlt">West</span> Nile Virus</span></a></p> <p><a target="_blank" href="http://medlineplus.gov/">MedlinePlus</a></p> <p></p> <p></p> <p>... Public Service Videos General Questions About <span class="hlt">West</span> Nile Virus Recommend on Facebook Tweet Share Compartir On This ... <span class="hlt">West</span> Nile virus cases? What is <span class="hlt">West</span> Nile virus? <span class="hlt">West</span> Nile virus is an arthropod-borne virus ( ...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/6200505','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/6200505"><span>Foreland <span class="hlt">basin</span> evolution in the central Andes, Bermejo <span class="hlt">basin</span>, San Juan Province, Argentina</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Jordan, T.E.; Naeser, C.W.; Johnson, N.M.; Johnsson, P.A.; Johnson, A.; Reynolds, J.; Reynolds, S.A.; Fielding, E.J.</p> <p>1985-01-01</p> <p>The Bermejo foreland <span class="hlt">basin</span> in evolving east of and being cannibalized by a N-trending thrust belt (Precordillera (PC)), and <span class="hlt">west</span> of a NNW-trending basement uplift (Sierra de Valle Fertil (VF)). Located above a flat Benioff zone, the Late Cenozoic nonmarine <span class="hlt">basin</span> is analogous in scale and structure to the Green River-Hoback <span class="hlt">basin</span> of Wyoming. Preliminary magnetic reversal stratigraphy, fission track dating, provenance studies, and facies analysis constrain its history. The thickest exposed strata (5 to 6 km) are in the easternmost folds of the PC and the subsurface sequence appears to thicken seaward toward the VF. Surface sections in the interior of the PC are thinner. Coeval strata <span class="hlt">west</span> of the PC, but east of the Frontal Cordillera, are much thinner; they may not have been part of the Bermejo <span class="hlt">basin</span>. The authors summarize the tectonic history as follows. There was little sediment accumulation in the foreland <span class="hlt">basin</span> when the main volcanic arc was active (27 to 11 Ma). Thrusting in the central PC had begun by about 8 Ma, when diagnostic clasts appeared in the detritus to the east and subsidence rate was very high. About that time, volcanic activity and rapid sediment accumulation occurred briefly on the western flank of the PC. Subsequently, thrusting migrated eastward, causing coarsening-upward sections in the eastern PC. Deformation reached the eastern PC after 2.3 Ma. The eastern Bermejo <span class="hlt">basin</span> continues to subside today. The time of uplift of the VF is poorly known, but was apparently younger than 12 Ma and coincident with thrust belt activity.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_20");'>20</a></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li class="active"><span>22</span></li> <li><a href="#" onclick='return showDiv("page_23");'>23</a></li> <li><a href="#" onclick='return showDiv("page_24");'>24</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_22 --> <div id="page_23" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li><a href="#" onclick='return showDiv("page_22");'>22</a></li> <li class="active"><span>23</span></li> <li><a href="#" onclick='return showDiv("page_24");'>24</a></li> <li><a href="#" onclick='return showDiv("page_25");'>25</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="441"> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/5575984','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/5575984"><span>History of petroleum exploration in California and the <span class="hlt">West</span> Coast</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Kilkenny, J.E.</p> <p>1991-03-01</p> <p>California's main oil and gas <span class="hlt">basins</span> consist of the inland Sacramento and San Joaquin and the Los Angeles, Ventura, and Santa Maria <span class="hlt">basins</span> adjacent to the coast and extending offshore. The state's total oil production to 1991 is approximately 22.8 billion bbls. Producing formations range in age from basement Jurassic to Pleistocene, but production is mainly from thick multiple sand zones of Miocene and Pliocene age. The first oil discovery was in the eastern Ventura <span class="hlt">basin</span> in 1875. By the turn of the century, 22 fields, including several giants in the San Joaquin Valley, had been discovered by drilling near oil seepages. The most important event of the 1920s was the discovery of several giant oil fields in the Los Angeles <span class="hlt">basin</span>, drilled on topographic highs suggestive of underlying anticlines. State production rapidly increased to 850,000 BOPD, or 40% of all US production. The 1930s saw the advent of the reflection seismograph, responsible for the state's largest oil field (Wilmington) in the Lost Angeles <span class="hlt">basin</span> and the state's largest gas field (Rio Vista) in the Sacramento <span class="hlt">basin</span>. A number of important fields were found under the San Joaquin Valley floor. Geological thinking in the late 1930s and 1940s resulted in the discovery of large stratigraphic traps in the San Joaquin Valley (e.g., East Coalinga) and at Santa Maria from fractured shale, plus two new small producing <span class="hlt">basins</span>, the Cuyama and the Salinas. Offshore exploration, consisting of seismic work, ocean-bottom sampling, and coreholing, revealed the presence of a number of anticlines in the Ventura <span class="hlt">basin</span>, paralleling the Santa Barbara coast. The first offshore discovery was made in 1959 on state lands followed by several major fields on federal lands in the late 1960s. Elsewhere along the <span class="hlt">West</span> Coast, exploration in Oregon and Washington has yielded only minor gas.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.epa.gov/exposure-assessment-models/basins-technical-notes','PESTICIDES'); return false;" href="https://www.epa.gov/exposure-assessment-models/basins-technical-notes"><span><span class="hlt">BASINS</span> Technical Notes</span></a></p> <p><a target="_blank" href="http://www.epa.gov/pesticides/search.htm">EPA Pesticide Factsheets</a></p> <p></p> <p></p> <p>EPA has developed several technical notes that provide in depth information on a specific function in <span class="hlt">BASINS</span>. Technical notes can be used to answer questions users may have, or to provide additional information on the application of features in <span class="hlt">BASINS</span>.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.epa.gov/exposure-assessment-models/basins-tutorials-and-training','PESTICIDES'); return false;" href="https://www.epa.gov/exposure-assessment-models/basins-tutorials-and-training"><span><span class="hlt">BASINS</span> Tutorials and Training</span></a></p> <p><a target="_blank" href="http://www.epa.gov/pesticides/search.htm">EPA Pesticide Factsheets</a></p> <p></p> <p></p> <p>A series of lectures and exercises on how to use <span class="hlt">BASINS</span> for water quality modeling and watershed assessment. The lectures follow sequentially. Companion exercises are provided for users to practice different <span class="hlt">BASINS</span> water quality modeling techniques.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/5024811','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/5024811"><span>Paleogeographic and paleotectonic development of Laramide <span class="hlt">basins</span> of SW Utah</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Goldstrand, P.M. )</p> <p>1993-04-01</p> <p>Initial Laramide-style deformation in SW Utah began in latest Cretaceous (late Campanian or Maastrichtian) time during deposition of the conglomeratic Canaan Peak Formation (TKcp) which thins onto a broad arch located on the northern Paunsaugunt Plateau (Paunsaugunt upwarp). This NNE-SSW trending upward affected sediment dispersal patterns during the early Paleocene and was the southern <span class="hlt">basin</span> margin for braided fluvial sediments of the Grand Castle Formation (Tgc). These sediments were shed SE, from the inactive Sevier highlands, as far east as the Table Cliff Plateau. Laramide deformation increased during the late( ) Paleocene, after deposition of the Tgc, with the formation of at least two closed <span class="hlt">basins</span>. During the late( ) Paleocene, the Johns Valley and Upper Valley anticlines, and Circle Cliff Uplift developed with sediment being shed to the SE, E, and SW into the Pine Hollow <span class="hlt">basin</span>. During initial development of the Pine Hollow <span class="hlt">basin</span>, the underlying TKcp and Tgc were reworked into the basal Pine Hollow Formation. Small alluvial fans bounded the <span class="hlt">basin</span>, grading laterally into low-energy fluvial, playa mudflat, and ephemeral lacustrine environments. The basal Claron Formation represents a broad, closed <span class="hlt">basin</span> that initially developed during the later Paleocene to the SW of the Pine Hollow <span class="hlt">basin</span>. The Claron <span class="hlt">basin</span> was bordered by low relief uplands, fluvial floodplains, and calcrete paleosols to the north and moderate relief uplands to the <span class="hlt">west</span> and east. Shallow lacustrine deposition occurred to the south. Lacustrine onlap of Laramide structures by middle Eocene suggests cessation of Laramide deformation by this time.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/of/2001/0135/report.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/of/2001/0135/report.pdf"><span><span class="hlt">Basin</span> Centered Gas Systems of the U.S.</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Popov, Marin A.; Nuccio, Vito F.; Dyman, Thaddeus S.; Gognat, Timothy A.; Johnson, Ronald C.; Schmoker, James W.; Wilson, Michael S.; Bartberger, Charles</p> <p>2001-01-01</p> <p><span class="hlt">Basin</span>-center accumulations, a type of continuous accumulation, have spatial dimensions equal to or exceeding those of conventional oil and gas accumulations, but unlike conventional fields, cannot be represented in terms of discrete, countable units delineated by downdip hydrocarbon-water contacts. Common geologic and production characteristics of continuous accumulations include their occurrence downdip from water-saturated rocks, lack of traditional trap or seal, relatively low matrix permeability, abnormal pressures (high or low), local interbedded source rocks, large in-place hydrocarbon volumes, and low recovery factors. The U.S. Geological Survey, in cooperation with the U.S. Department of Energy, National Energy Technology Laboratory, Morgantown, <span class="hlt">West</span> Virginia, is currently re-evaluating the resource potential of <span class="hlt">basin</span>-center gas accumulations in the U.S. in light of changing geologic perceptions about these accumulations (such as the role of subtle structures to produce sweet spots), and the availability of new data. Better geologic understanding of <span class="hlt">basin</span>-center gas accumulations could result in new plays or revised plays relative to those of the U.S. Geological Survey 1995 National Assessment (Gautier and others, 1995). For this study, 33 potential <span class="hlt">basin</span>-center gas accumulations throughout the U.S. were identified and characterized based on data from the published literature and from well and reservoir databases (Figure 1). However, well-known or established <span class="hlt">basin</span>-center accumulations such as the Green River <span class="hlt">Basin</span>, the Uinta <span class="hlt">Basin</span>, and the Piceance <span class="hlt">Basin</span> are not addressed in this study.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://ntrs.nasa.gov/search.jsp?R=PIA00403&hterms=debris+flow+collapse&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D40%26Ntt%3Ddebris%2Bflow%2Bcollapse','NASA-TRS'); return false;" href="https://ntrs.nasa.gov/search.jsp?R=PIA00403&hterms=debris+flow+collapse&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D40%26Ntt%3Ddebris%2Bflow%2Bcollapse"><span><span class="hlt">West</span> Candor Chasma</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p></p> <p>1996-01-01</p> <p>During its examination of Mars, the Viking 1 spacecraft returned images of Valles Marineris, a huge canyon system 5,000 km long, up to 240 km wide, and 6.5 km deep, whose connected chasma or valleys may have formed from a combination of erosional collapse and structural activity. The view shows <span class="hlt">west</span> Candor Chasma, one of the connected valleys of Valles Marineris; north toward top of frame. The image is a composite of Viking high-resolution (about 80 m/pixel or picture element) images in black and white and low resolution (about 250 m/pixel) images in color. The Viking 1 craft landed on Mars in July of 1976. <span class="hlt">West</span> Candor Chasma occupies the westernmost part of the large <span class="hlt">west</span>-northwest-trending trough of Candor Chasma. This section is about 150 km wide. <span class="hlt">West</span> Candor Chasma is bordered on the north and south by straight-walled cliffs, most likely faults, and on its <span class="hlt">west</span> by two segments of north-northeast-trending cliffs. The north wall is dissected by landslide scars forming reentrants filled with landslide debris. The south wall shows spur-and-gully morphology and smooth sections. The high-standing central mesa, informally dubbed Red Mesa has several curvilinear reentrants carved into the caprock, whose anomalously colored layers were interpreted to be caused by young hydrothermal alteration products (Geissler et al., 1993, Icarus, v. 106, p. 380-391). Light-colored lobes flow away from the top of the interior stack and then flow around and embay the same layered stack from which they originated. One of these apparent flow features is composed of at least two or perhaps even three huge, superposed, vaguely layered, very rugged, light-colored lobes as much as 100 km long, 20 km wide, and over 2 km thick. The layered deposits below the caprock also merge with a chaotic material that has local lobate fronts and overlaps landslide deposits. Hummocky material, similar in hue to wall rock, fills the southwestern-most region of <span class="hlt">west</span> Candor Chasma and is perhaps as much as 3</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.rmag.org/current-mountain-geologist-issues','USGSPUBS'); return false;" href="http://www.rmag.org/current-mountain-geologist-issues"><span>Field guide to Laramide <span class="hlt">basin</span> evolution and drilling activity in North Park and Middle Park, Colorado</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Dechesne, Marieke; Cole, James Channing; Martin, Christopher B.</p> <p>2016-01-01</p> <p>Overview of the geologic history of the North Park–Middle Park area and its past and recent drilling activity. Field trip stops highlight <span class="hlt">basin</span> formation and the consequences of geologic configuration on oil and gas plays and development. The starting point is the <span class="hlt">west</span> flank of the Denver <span class="hlt">Basin</span> to compare and contrast the latest Cretaceous through Eocene <span class="hlt">basin</span> fill on both flanks of the Front Range, before exploring sediments of the same age in the North Park – Middle Park intermontane <span class="hlt">basin</span>.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/of/2014/1248/pdf/ofr2014-1248.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/of/2014/1248/pdf/ofr2014-1248.pdf"><span>Magnetotelluric data collected to characterize aquifers in the San Luis <span class="hlt">Basin</span>, New Mexico</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Ailes, Chad E.; Rodriguez, Brian D.</p> <p>2015-01-01</p> <p>The U.S. Geological Survey is conducting a series of multidisciplinary studies of the San Luis <span class="hlt">Basin</span> as part of the Geologic Framework of Rio Grande <span class="hlt">Basins</span> project. Detailed geologic mapping, high-resolution airborne magnetic surveys, gravity surveys, magnetotelluric surveys, and hydrologic and lithologic data are being used to better understand the aquifers in the San Luis <span class="hlt">Basin</span>. This report describes one north-south and two east-<span class="hlt">west</span> regional magnetotelluric sounding profiles, acquired in June of 2010 and July and August of 2011, across the San Luis <span class="hlt">Basin</span> in northern New Mexico. No interpretation of the data is included.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.dtic.mil/docs/citations/ADA191144','DTIC-ST'); return false;" href="http://www.dtic.mil/docs/citations/ADA191144"><span>Foundation Report on Stonewall Jackson Dam, <span class="hlt">West</span> Fork River <span class="hlt">Basin</span>, Weston, <span class="hlt">West</span> Virginia. Volume 1.</span></a></p> <p><a target="_blank" href="https://publicaccess.dtic.mil/psm/api/service/search/search">DTIC Science & Technology</a></p> <p></p> <p>1987-12-21</p> <p>ci last ucvate 05/01𔄂t I E C 1e I d raPe T,.oe Width Ce; 1 CFJ haracter 25 - LOCHTION Character 25 " STATION Character Iv 4 r",PELEV Numeric 7 H E r...I __ 9 7 9.b parting, shalv :am. gr., v/scat. cisc. no d’s. otm fHe EMG PORN 18 36 EPVOI DITIONS API O3LOLIETE STONECAL 1AKO DAE 220 MAR7 STNWLLJCSO</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2016E%26ES...29a2027A','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2016E%26ES...29a2027A"><span>Groundwater Characterization of Cihaur Watershed <span class="hlt">Basin</span>, Batujajar and Adjacent, <span class="hlt">West</span> Bandung District, <span class="hlt">West</span> Java, Indonesia</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Azy, Fikri Noor; Sapari Dwi Hadian, Mohamad; Ismawan</p> <p>2016-01-01</p> <p>The study was conducted based on data from outcrop, well data, and springs with field orientation method assisted by the use of GPS and measurement tool physical and chemical properties of groundwater. Geological conditions investigated were geomorphology and stratigraphy, geomorphology unit study area consists of four units, namely geomorphology unit of strato volcano body, foot of strato volcano, intrusion units, and plains units and the river drainage patterns are parallel and subparallel. Stratigraphy in the study area are volcanic breccia (Qbv), Unit Andesite (Qa), Unit Tuff (Qtf) and Unit Clay Tuffan (Qlt). The characteristics of the groundwater of the study area are in form of the physico-chemical, major elements, and hydrolic parameter of the groundwater aquifers. From 27 locations, the water quality assesment by physico-chemical properties is classified as fresh water category and based on chemical major elements, has been classified 8 facies which are located in the study area. Then, there are two lithologies which act as aquifers ie, tuff and volcanic breccias. Conductivity values in the range of volcanic breccia aquifers respectively 0,128 m/day and 0,288 m/day, transmitivity (T) ranges respectively 1,9296 m2/day and 4,32 m2/day. The value of conductivity in tuff aquifer is 0,063 m/day, transmitivity (T) is 0,95 m2/day. While lithology Qlt (Clay tuffan) is lithology with very low productivity of groundwater or called groundwater rare area (akiclud) and the rock units Qa (Andesite) is a non-aquifer that is the absence of groundwater in these rock units (akifug).</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3541721','PMC'); return false;" href="https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3541721"><span><span class="hlt">West</span> Nile Virus Ecology in a Tropical Ecosystem in Guatemala</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>Morales-Betoulle, Maria E.; Komar, Nicholas; Panella, Nicholas A.; Alvarez, Danilo; López, María R.; Betoulle, Jean-Luc; Sosa, Silvia M.; Müller, María L.; Kilpatrick, A. Marm; Lanciotti, Robert S.; Johnson, Barbara W.; Powers, Ann M.; Cordón-Rosales, Celia</p> <p>2013-01-01</p> <p><span class="hlt">West</span> Nile virus ecology has yet to be rigorously investigated in the Caribbean <span class="hlt">Basin</span>. We identified a transmission focus in Puerto Barrios, Guatemala, and established systematic monitoring of avian abundance and infection, seroconversions in domestic poultry, and viral infections in mosquitoes. <span class="hlt">West</span> Nile virus transmission was detected annually between May and October from 2005 to 2008. High temperature and low rainfall enhanced the probability of chicken seroconversions, which occurred in both urban and rural sites. <span class="hlt">West</span> Nile virus was isolated from Culex quinquefasciatus and to a lesser extent, from Culex mollis/Culex inflictus, but not from the most abundant Culex mosquito, Culex nigripalpus. A calculation that combined avian abundance, seroprevalence, and vertebrate reservoir competence suggested that great-tailed grackle (Quiscalus mexicanus) is the major amplifying host in this ecosystem. <span class="hlt">West</span> Nile virus transmission reached moderate levels in sentinel chickens during 2007, but less than that observed during outbreaks of human disease attributed to <span class="hlt">West</span> Nile virus in the United States. PMID:23149586</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.dtic.mil/docs/citations/ADA346524','DTIC-ST'); return false;" href="http://www.dtic.mil/docs/citations/ADA346524"><span>JPRS Report, <span class="hlt">West</span> Europe</span></a></p> <p><a target="_blank" href="https://publicaccess.dtic.mil/psm/api/service/search/search">DTIC Science & Technology</a></p> <p></p> <p>2007-11-02</p> <p><span class="hlt">WEST</span> EUROPE CONTENTS POLITICAL EUROPEAN AFFAIRS Survey Reveals European ’No’ on Full EEC Membership for Turkey ( M . Ali Birand; MILLIYET, 11 Mar...8217Circle of Fire’ ( M . Ali Birand; MILLIYET, 13 Mar 87) 37 MILITARY DENMARK Former Armed Forces Chief Claims Budget Bill Contains Waste (G. K...87) 100 /9987 ~ d - EUROPEAN AFFAIRS POLITICAL SURVEY REVEALS EUROPEAN ’NO1 ON FULL EEC MEMBERSHIP FOR TURKEY Istanbul MILLIYET in Turkish 11</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70159574','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70159574"><span>Tectonic evolution of the Tualatin <span class="hlt">basin</span>, northwest Oregon, as revealed by inversion of gravity data</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>McPhee, Darcy K.; Langenheim, Victoria E.; Wells, Ray; Blakely, Richard J.</p> <p>2014-01-01</p> <p>The Tualatin <span class="hlt">basin</span>, <span class="hlt">west</span> of Portland (Oregon, USA), coincides with a 110 mGal gravity low along the Puget-Willamette lowland. New gravity measurements (n = 3000) reveal a three-dimensional (3-D) subsurface geometry suggesting early development as a fault-bounded pull-apart <span class="hlt">basin</span>. A strong northwest-trending gravity gradient coincides with the Gales Creek fault, which forms the southwestern boundary of the Tualatin <span class="hlt">basin</span>. Faults along the northeastern margin in the Portland Hills and the northeast-trending Sherwood fault along the southeastern <span class="hlt">basin</span> margin are also associated with gravity gradients, but of smaller magnitude. The gravity low reflects the large density contrast between <span class="hlt">basin</span> fill and the mafic crust of the Siletz terrane composing basement. Inversions of gravity data indicate that the Tualatin <span class="hlt">basin</span> is ∼6 km deep, therefore 6 times deeper than the 1 km maximum depth of the Miocene Columba River Basalt Group (CRBG) in the <span class="hlt">basin</span>, implying that the <span class="hlt">basin</span> contains several kilometers of low-density pre-CRBG sediments and so formed primarily before the 15 Ma emplacement of the CRBG. The shape of the <span class="hlt">basin</span> and the location of parallel, linear <span class="hlt">basin</span>-bounding faults along the southwest and northeast margins suggest that the Tualatin <span class="hlt">basin</span> originated as a pull-apart rhombochasm. Pre-CRBG extension in the Tualatin <span class="hlt">basin</span> is consistent with an episode of late Eocene extension documented elsewhere in the Coast Ranges. The present fold and thrust geometry of the Tualatin <span class="hlt">basin</span>, the result of Neogene compression, is superimposed on the ancestral pull-apart <span class="hlt">basin</span>. The present 3-D <span class="hlt">basin</span> geometry may imply stronger ground shaking along <span class="hlt">basin</span> edges, particularly along the concealed northeast edge of the Tualatin <span class="hlt">basin</span> beneath the greater Portland area.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/12295094','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/12295094"><span><span class="hlt">West</span> and Central Africa.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Lydie, N; Robinson, N J</p> <p>1998-01-01</p> <p>This article reviews scientific and other literature during the 1990s that links migration and mobility with the spread of sexually transmitted diseases (STDs), including HIV/AIDS. The focus is on key population groups linked to the spread of HIV and STDs in <span class="hlt">West</span> and Central Africa: migrant laborers, truck drivers, itinerant traders, commercial sex workers (CSWs), and refugees. Countries with high emigration and immigration tend to have high levels of HIV infection, with the exception of Senegal. The main destination of immigrants are Senegal, Nigeria, and Cote d'Ivoire in <span class="hlt">West</span> Africa and Cameroon, Congo, Gabon, and Congo in Central Africa. The risk of infection and the spread of HIV is variable among migrants. There is little in the literature that substantiates hypotheses about the strong association between migration and HIV-positive status. Information is needed on the duration, frequency of return visits, living conditions, sexual activities with multiple partners, and information before departure, along the routes, at final destination, and at the time of returns. Action-based research in five <span class="hlt">West</span> African countries (Burkina Faso, Cote d'Ivoire, Mali, Niger, and Senegal) should produce results in late 1998. Comparable studies in Central Africa are unknown. Regional studies should be complemented by local studies. Prevention would benefit from studies on the relative size of these five population groups by geographic location.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://ntrs.nasa.gov/search.jsp?R=10563&hterms=rainy+season&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D10%26Ntt%3Drainy%2Bseason','NASA-TRS'); return false;" href="https://ntrs.nasa.gov/search.jsp?R=10563&hterms=rainy+season&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D10%26Ntt%3Drainy%2Bseason"><span>Drought in <span class="hlt">West</span> Africa</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p></p> <p>2007-01-01</p> <p>Drought settled over <span class="hlt">West</span> Africa's Ivory Coast region when wet season rains came late in 2007. Instead of beginning in February, the rainy season didn't start until March, and steady rains didn't start until late March, said the Famine Early Warning System Network. Though the rain had started to alleviate the drought, vegetation was still depressed in parts of Cote d'Ivoire (Ivory Coast) between March 22 and April 6, 2007, when the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA's Terra satellite captured the data used to make this image. The image shows current vegetation conditions compared to average conditions recorded since 2000. Areas where plants are growing more slowly or more sparsely than average are brown, while areas where vegetation is denser than average are green. The brown tint that dominates the image indicates that plants through most of the country are more sparse than normal. Among the crops affected by the lack of rain was <span class="hlt">West</span> Africa's cocoa crop. About 70 percent of the world's cocoa comes from <span class="hlt">West</span> Africa, and Cote d'Ivoire is a top grower, said Reuters. Cocoa prices climbed as the crop fell short. Farmers called the drought the worst in living memory, Reuters said. The delay in rainfall also led to water shortages in parts of Cote d'Ivoire, according to the United Nations Office for the Coordination of Humanitarian Affairs.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/of/2006/1015/','USGSPUBS'); return false;" href="https://pubs.usgs.gov/of/2006/1015/"><span>Vitrinite Reflectance Data for the Wind River <span class="hlt">Basin</span>, Central Wyoming</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Finn, Thomas M.; Roberts, Laura N.R.; Pawlewicz, Mark J.</p> <p>2006-01-01</p> <p>Introduction: The Wind River <span class="hlt">Basin</span> is a large Laramide (Late Cretaceous through Eocene) structural and sedimentary <span class="hlt">basin</span> that encompasses about 7,400 mi2 in central Wyoming. The <span class="hlt">basin</span> boundaries are defined by fault-bounded Laramide uplifts that surround it, including the Owl Creek and Bighorn Mountains to the north, Wind River Range to the <span class="hlt">west</span>, Granite Mountains to the south, and Casper Arch to the east. The purpose of this report is to present new vitrinite reflectance data to be used in support of the U.S Geological Survey assessment of undiscovered oil and gas resources of the Wind River <span class="hlt">Basin</span>. One hundred and nineteen samples were collected from Jurassic through Tertiary rocks, mostly coal-bearing strata, in an effort to better understand and characterize the thermal maturation and burial history of potential source rocks.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/1988Geo....16..216L','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/1988Geo....16..216L"><span>Possible new constraints on late Miocene depositional patterns in <span class="hlt">west</span>-central California</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Liniecki-Laporte, Margaret; Andersen, David W.</p> <p>1988-03-01</p> <p>In the San Francisco Bay area, estuarine, lacustrine, and fluvial depositional environments existed contemporaneously within the Mulholland Formation, which was deposited in the Contra Costa <span class="hlt">basin</span> from 7.7 to 6.5 Ma. The estuarine facies is differentiated from the nonmarine facies on the bases of ostracodes and sedimentology. Presence of the estuarine facies in the Mulholland Formation demonstrates that the Contra Costa <span class="hlt">basin</span> was at sea level, the western part of the <span class="hlt">basin</span> being a marine embayment for about 1 m.y. Absence of fresh Sierra Nevada-derived material in the lower Mulholland Formation indicates that a topographically elevated area existed east of the Contra Costa <span class="hlt">basin</span>, effectively deflecting the Sierran debris, which is represented by the coeval Neroly Formation found in the eastern central Coast Ranges. To the <span class="hlt">west</span> of the Contra Costa <span class="hlt">basin</span>, some gaps in the Coast Ranges allowed connection with the Pacific Ocean.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/6965295','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/6965295"><span>The petroleum <span class="hlt">basins</span> of the sea of Okhotsk</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Khvedchuk, I. )</p> <p>1993-09-01</p> <p>The Okhotsk area includes the major oil and gas <span class="hlt">basins</span> of north Sakhalin and <span class="hlt">west</span> Kamchatka, where more than 70 fields have been discovered. The <span class="hlt">basins</span> consist of Tertiary cover (marine, coastal and continental terrigenous, and siliceous volcanogenic and volcanoclastic rocks) and pre-Cenozoic basement composed of geosynclinal rock associations. Sediment thickness in the <span class="hlt">basins</span> attains 10-12 km. Rifting of the basement has resulted in the development of grabens controlled by northwest- and northeast-trending faults. Crustal thickness is 27-31 km. All the petroleum <span class="hlt">basins</span> are related to rifts, which were associated with volcanic and magmatic activity and abnormally high temperature and pressures. Analysis of the data show that the main factors affecting deposition of the source rocks, their spatial distribution, and their effectiveness in generating hydrocarbons are; the geological age, regional tectonics, paleogeography, dominant kerogen type, and temperature. There are various types of oil and gas source rocks: Paleocene to lower Eocene claystones contain gas-prone kerogen type III (<span class="hlt">west</span> Kamchatka); upper Eocene and Oligocene marine clays and siliceous clays contain oil-prone kerogen type II (<span class="hlt">west</span> Kamchatka); upper Oligocene to lower Miocene siliceous shales (north Sakhalin and <span class="hlt">west</span> Kamchatka) contain kerogen type II; lower and middle Miocene clays are gas prone (north Sakhalin and <span class="hlt">west</span> Kamchatka); and middle Miocene marine clays contain oil-prone kerogen type II (north Sakhalin). The quantity of organic matter in the source rocks ranges from 0.6 to 4.2%, and the geothermal gradient ranges from 24 to 44[degrees]C per km. The main reservoirs are upper Oligocene-lower Miocene siliceous shales, Miocene-lower Pliocene sandstones, and upper Miocene deltaic sandstones. Oil and gas accumulations occur in anticlines and stratigraphic traps.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/6558731','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/6558731"><span>Karst-controlled reservoir heterogeneity in Ellenburger group carbonates of <span class="hlt">west</span> Texas: Reply</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Kerans, C. )</p> <p>1990-07-01</p> <p>A reply to a comment made on Kerans' paper (AAGP Bull. 1988) by S.J. Mazzullo is presented. The author takes exception that Mazzullo's contention that he left out important types of hydrocarbon reservoirs in the Permian <span class="hlt">basin</span> of <span class="hlt">west</span> Texas and points out that his original intention was to model karst-controlled reservoir rocks only.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70021690','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70021690"><span>Structural and petrologic evolution of the Lihue <span class="hlt">basin</span> and eastern Kauai, Hawaii</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Reiners, P.W.; Nelson, B.K.; Izuka, S.K.</p> <p>1999-01-01</p> <p>The topography of the eastern part of the Hawaiian island of Kauai is dominated by the Lihue <span class="hlt">basin</span>, a large (???110 km2) semicircular depression bounded by steep cliffs and partly filled by late rejuvenated-stage (or post-erosional stage) volcanic material. As with other large, semicircular <span class="hlt">basins</span> on ocean-island volcanoes, the subsurface geology and origin (e.g., structural collapse vs. fluvial erosion) of the Lihue <span class="hlt">basin</span> are poorly understood. New analyses of samples collected from eastern Kauai and drill holes within the <span class="hlt">basin</span> document several important features of the late-stage geologic evolution of Kauai. First, thick (>300 m) sequences of rejuvenated-stage Koloa Volcanics in the Lihue <span class="hlt">basin</span> show systematic, <span class="hlt">basin</span>-wide geochemical trends of increasingly incompatible elements with time, indicating a gradual decrease in the extent of partial melting of mantle sources with time. Second, beneath the rejuvenated-stage volcanics in the <span class="hlt">basin</span>, a thin layer of postshield alkalic stage lavas (e.g., hawaiites and mugearites) overlies older shield-stage tholeiitic lavas of the Napali Member, indicating that the Lihue <span class="hlt">basin</span> formed by structural collapse, not fluvial erosion. Third, a large (???2-5 km3) matrix-supported breccia, interpreted as deposits of one or more debris flows, is within the rejuvenated-stage volcanics throughout the <span class="hlt">basin</span>, and correlates with surficial exposures of the Palikea Breccia <span class="hlt">west</span> of the <span class="hlt">basin</span>. Isotopic compositions of the bulk breccia are similar to those of tholeiites from the east side of Kauai, and distinct from those of <span class="hlt">west</span> Kauai tholeiites. Clasts within the breccia are dominantly hawaiite and alkali gabbro. The source region of the breccia in the steep cliffs and highlands of the central massif to the <span class="hlt">west</span> of the <span class="hlt">basin</span> must contain magmatic products of an extensive postshield alkalic stage, including hawaiite flows and one or more large intrusive bodies or ponded sequences of alkali gabbro.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li><a href="#" onclick='return showDiv("page_22");'>22</a></li> <li class="active"><span>23</span></li> <li><a href="#" onclick='return showDiv("page_24");'>24</a></li> <li><a href="#" onclick='return showDiv("page_25");'>25</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_23 --> <div id="page_24" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li><a href="#" onclick='return showDiv("page_22");'>22</a></li> <li><a href="#" onclick='return showDiv("page_23");'>23</a></li> <li class="active"><span>24</span></li> <li><a href="#" onclick='return showDiv("page_25");'>25</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="461"> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2016SedG..335....1X','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2016SedG..335....1X"><span>Provenance and sediment dispersal of the Triassic Yanchang Formation, southwest Ordos <span class="hlt">Basin</span>, China, and its implications</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Xie, Xiangyang</p> <p>2016-04-01</p> <p>The Ordos <span class="hlt">Basin</span> in north central China records a transition from marine to non-marine deposition during the late Paleozoic to early Mesozoic. As a result, the northern and southern regions of the Ordos <span class="hlt">Basin</span> show different tectonic histories and very distinctive sedimentation styles. Two deformation belts, the Qinling orogenic belt to the south and the Liupanshan thrust and fold belt to the <span class="hlt">west</span>, controlled the structural evolution of the southern Ordos <span class="hlt">Basin</span> during the early Mesozoic. Paleocurrent analysis, net-sand ratio maps, sandstone modal analysis, and U-Pb detrital zircon geochronology were used to document sediment sources and dispersal patterns of the Triassic Yanchang Formation in the southwest Ordos <span class="hlt">Basin</span>. Paleocurrent measurements suggest that the sediments were mainly derived from the Liupanshan and the Qinling orogenic belts. Net-sand ratio maps show that several fan delta systems controlled sediment delivery in the south Ordos <span class="hlt">Basin</span>. Both sandstone modal analysis and U-Pb detrital zircon geochronology suggest that the Yanchang Formation is locally sourced from both of the <span class="hlt">basin</span> marginal deformation belts; the lower and middle sections are recycled Paleozoic sedimentary rocks mainly derived from the north Qinling orogenic belt, whereas for the upper section, the Qilian-Qaidam terranes and possibly the <span class="hlt">west</span> Qinling orogenic belt began to shed sediments into the southwest Ordos <span class="hlt">Basin</span>. Results have important implications for <span class="hlt">basin</span> marginal tectonics and its controls on sedimentation of intracratonic <span class="hlt">basins</span> in China and similar settings.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/1001226','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/1001226"><span><span class="hlt">West</span> Hackberry Tertiary Project</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Kenneth Haley; Travis Gillham; Demetrios Yannimaras</p> <p>1999-03-31</p> <p>The <span class="hlt">West</span> Hackberry Tertiary Project is a field test of the concept that air injection can be combined with the Double Displacement Process to produce a tertiary recovery process that is both low cost and economic at current oil prices. The Double Displacement Process is the gas displacement of a water invaded oil column for the purpose of recovering tertiary oil by gravity drainage. In reservoirs with pronounced bed dip such as those found in <span class="hlt">West</span> Hackberry and other Gulf Coast salt dome fields, reservoir performance has shown that gravity drainage recoveries average 80% to 90% of the original oil in place while waterdrive recoveries average 50% to 60% of the original oil in place. The target for tertiary oil recovery in the Double Displacement Process is the incremental oil between the 50% to 60% waterdrive recoveries and the 80% to 90% gravity drainage recoveries. In previous field tests, the Double Displacement Process has proven successful in generating tertiary oil recovery. The use of air injection in this process combines the benefits of air's low cost and universal accessibility with the potential for accelerated oil recovery from the combustion process. If successful, this project will demonstrate that utilizing air injection in the Double Displacement Process will result in an economically viable tertiary process in reservoirs (such as Gulf Coast salt dome reservoirs) where any other tertiary process is presently uneconomic. Air injection on the <span class="hlt">West</span> Hank began in November of 1994. Although <span class="hlt">West</span> Flank air injection has increased reservoir pressure by 500 pounds per square inch (psi), production response has not yet occurred. The gas cap on the <span class="hlt">West</span> Flank has not expanded sufficiently to push the oil rim down to the nearest down structure well. Cumulative injection to date is 1.6 BCF, only approximately 50% of the projected volume required to establish oil production response. Additional air injection is required to further expand the gas cap and thereby</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/2218','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/2218"><span>Detailed Gravity and Magnetic Survey of the Taylorsville Triassic <span class="hlt">Basin</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Ali A. Nowroozi; John Leftwich</p> <p>1997-12-31</p> <p>Our research to date has involved the Interpretation of the Bouguer Gravity Anomaly Associated with the Richmond and Taylorsville Triassic <span class="hlt">Basins</span> and its Vicinity. Continental rift <span class="hlt">basins</span> around the world contain about 5% of the earth's sedimentary layers and produce about 20% of the total hydrocarbon production of the world (Ziegler (1983). Nearly 30 large <span class="hlt">basins</span> of this type are reported by Manspeizer and Cousminer (1988) in eastern North America and northwestern Africa. There are eleven exposed <span class="hlt">basins</span> of this type in the state of Virginia, from which nine are totally and two partially within the state's border. The number of unexposed <span class="hlt">basin</span>'s is not known. Exploration and drilling have been hampered largely because surface data are insufficient for even evaluation of those <span class="hlt">basins</span> which are partly or completely exposed in the Piedmont Province. Generation of data through random exploratory drilling and seismic exploration is much too expensive and, therefore, these methods have not been widely used. In order to remedy this situation, we have used a geophysical method and completed a detailed and dense ground gravity surveys of the Richmond (Nowroozi and Wong, 1989, Daniels and Nowroozi, 1987). In this work we report our progress on collecting existing gravity data in a rectangular area covering the Richmond and Taylorsville <span class="hlt">Basins</span> and its vicinity. The area covers one degree latitude and one degree longitude, starting at 37 North, 77 <span class="hlt">West</span> and ending at 38 North, 78 <span class="hlt">West</span>. Dr. David Daniels of the United State Geological Survey supplied us with more than 4900 Bouguer gravity anomalies in this area. The purpose of this progress report is to present the data in form of several maps and discuss its relation to the geology of the Triassic <span class="hlt">Basins</span> and its vicinity. Johnson and others (1985) also presented a map of the Bouguer gravity anomaly of this area. However, their map covers a smaller area, and it is based on smaller number of observations.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2010AGUFM.T31A2126M','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2010AGUFM.T31A2126M"><span>Sedimentation in Canada <span class="hlt">Basin</span>, Western Arctic</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Mosher, D. C.; Shimeld, J.; Jackson, R.; Hutchinson, D. R.; Chapman, B.; Chian, D.; Childs, J. R.; Mayer, L. A.; Edwards, B. D.; Verhoef, J.</p> <p>2010-12-01</p> <p>The Canada <span class="hlt">Basin</span> of the western Arctic Ocean is the least studied ocean <span class="hlt">basin</span> on Earth. Marine seismic field programs were conducted during the past 5 years in order to study the geology, sedimentary history and geomorphology of the region. As part of this program, five annual icebreaker expeditions acquired bathymetric, seismic reflection and seismic refraction data on a regional scale. More than 12,000 km of multi-channel seismic reflection data and 120 sonobuoy seismic refraction records over abyssal plain and continental rise regions of Canada <span class="hlt">Basin</span>, Northwind Ridge and Alpha Ridge were acquired. The success of these programs was achieved through novel technical modifications to equipment to permit towing in heavy ice conditions and through collaboration between multiple Canadian and US agencies and institutions, enabling utilization of two ice breakers during seismic and multibeam data acquisition in heavy ice. The seafloor of the Canada <span class="hlt">Basin</span> is remarkably flat-lying in its central region, with little bathymetric change over most of its extent. The sedimentary succession is generally flat lying with reflections extending over hundreds of km. These reflections onlap bathymetric highs, such as Alpha and Northwind ridges. The sedimentary succession is thickest in the Beaufort Sea region, reaching more than 6.5 km, and generally thins to the north and <span class="hlt">west</span>. Reflection characteristics suggest that sediment volume input to the Arctic Ocean has been high and dominated by turbidity current deposition, similar to Amundsen and Nansen <span class="hlt">Basins</span> of the eastern Arctic. These turbidites originate from the eastern and southern continental margins. There is no evidence of contemporaneous or post-depositional reworking by bottom currents. Additionally, there is little evidence of tectonic deformation after primary <span class="hlt">basin</span>-forming events except in the NE quadrant, nearer Alpha Ridge. In this area, there is significant normal faulting propagating from basement through much of the</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/6935608','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/6935608"><span>Tectonic history of the Illinois <span class="hlt">basin</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Kolata, D.R.; Nelson, J.W. )</p> <p>1990-05-01</p> <p>The Illinois <span class="hlt">basin</span> began as a failed rift that developed during breakup of a supercontinent approximately 550 Ma. A rift <span class="hlt">basin</span> in the southernmost part of the present Illinois <span class="hlt">basin</span> subsided rapidly and filled with about 3,000 m of probable Early and Middle Cambrian sediments. By the Late Cambrian, the rift-bounding faults became inactive and a broad relatively slowly subsiding embayment, extending well beyond the rift and open to the Iapetus Ocean, persisted through most of the Paleozoic Era. Widespread deformation swept through the proto-Illinois <span class="hlt">basin</span> beginning in the latest Mississippian, continuing to the end of the Paleozoic Era. Uplift of basement fault blocks resulted in the formation of many major folds and faults. The timing of deformation and location of these structures in the forelands of the Ouachita and Alleghanian orogenic belts suggest that much of the deformation resulted from continental collision between North America and Gondwana. The associated compressional stress reactivated the ancient rift-bounding faults, upthrusting the northern edge of a crustal block approximately 1,000 m within the rift. Concurrently, dikes (radiometrically dated as Early Permian), sills, and explosion breccias formed in or adjacent to the reactivated rift. Subsequent extensional stress, probably associated with breakup of Pangea, caused the crustal block within the rift to sink back to near its original position. High-angle, northeast- to east-<span class="hlt">west</span>-trending normal faults, with as much as 1,000 m of displacement, formed in the southern part of the <span class="hlt">basin</span>. These faults displace some of the northwest trending Early Permian dikes. Structural closure of the southern end of the Illinois <span class="hlt">basin</span> was caused by uplift of the Pascola arch sometime between the Late Pennsylvanian and Late Cretaceous.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/6305375','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/6305375"><span>Evolution of the San Jorge <span class="hlt">basin</span>, Argentina</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Fitzgerald, M.G. ); Uliana, M.A. ); Biddle, K.T. ); Mitchum, R.M. Jr.</p> <p>1990-06-01</p> <p>The San Jorge <span class="hlt">basin</span>, although small, is the most important hydrocarbon-producing <span class="hlt">basin</span> in Argentina. Remaining untested potential is high because of the presence of good source rock, favorable structural complexity, and multiple reservoirs. Reservoir quality is commonly low because of the highly tuffaceous sandstones. The sedimentary fill of the <span class="hlt">basin</span> is closely related to its tectonic history. Northwest-southeast-trending grabens formed and filled during a Triassic and Early Jurassic early rift phase, climaxing with a pervasive Middle Jurassic volcanic episode; continued growth and filling of the <span class="hlt">basin</span> occurred during a Late Jurassic-earliest Cretaceous late rift phase and Cretaceous early and late sag phases. Late Cretaceous-early Tertiary extension set up many of the present-day structural traps along normal faults. Middle Tertiary Andean compression produced the narrow, north-south San Bernardo structural belt, which exhibits reversed movement on older, normal, graben-bounding faults and on local, low-angle thrust faults. Marked early to middle Tertiary erosion produced a significant unconformity within Cretaceous beds around <span class="hlt">basin</span> margins. Origin of Upper Jurassic and lowermost Cretaceous sedimentary fill is primarily lacustrine or fluvial in origin. Lacustrine, organic-rich black shales are fringed by oolitic and other limestones and fluvial-deltaic sandstones derived mostly from the north. A significant southern source of sand existed during the Valanginian. Interbedded marine shales occur mostly to the <span class="hlt">west</span> toward a presumed marine seaway connection to the northern Magallanes <span class="hlt">basin</span>. Middle to Upper Cretaceous sedimentary rocks, sourced mostly from the north, are mainly fluvial sandstone-shale successions with some minor lacustrine influence. Reservoir quality glauconitic sands were deposited during a Late Cretaceous-early Tertiary marine incursion from the Atlantic.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/1003917','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/1003917"><span>Avian cholera in Nebraska's Rainwater <span class="hlt">Basin</span></span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Windingstad, R.M.; Hurt, J.J.; Trout, A.K.; Cary, J.</p> <p>1984-01-01</p> <p>The first report of avian cholera in North America occurred in northwestern Texas in winter 1944 (Quortrup et al. 1946). In 1975, mortality from avian cholera occurred for the first time in waterfowl in the Rainwater <span class="hlt">Basin</span> of Nebraska when an estimated 25,000 birds died (Zinkl et al. 1977). Avian cholera has continued to cause mortality in wild birds in specific areas of the <span class="hlt">Basin</span> each spring since. Losses of waterfowl from avian cholera continue to be much greater in some of the wetlands in the western part of the <span class="hlt">Basin</span> than in the east. Several wetlands in the <span class="hlt">west</span> have consistently higher mortality and are most often the wetlands where initial mortality is noticed each spring (Figure 1). The establishment of this disease in Nebraska is of considerable concern because of the importance of the Rainwater <span class="hlt">Basin</span> as a spring staging area for waterfowl migrating to their breeding grounds. The wetlands in this area are on a major migration route used by an estimated 5 to 9 million ducks and several hundred thousand geese. A large portion of the western mid-continental greater white-fronted goose (Anser albifrons) population stage in the <span class="hlt">Basin</span> each spring. Occasionally, whooping cranes (Grus americana) use these wetlands during migration, and lesser sandhill cranes (Grus canadensis) staging on the nearby Platte River sometimes use wetlands where avian cholera occurs (Anonymous 1981). Our objectives were to determine whether certain water quality variables in the Rainwater <span class="hlt">Basin</span> differed between areas of high and low avian cholera incidence. These results would then be used for laboratory studies involving the survivability of Pasteurella multocida, the causative bacterium of avian cholera. Those studies will be reported elsewhere.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/7171397','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/7171397"><span>Tertiary tectonics and sedimentation in the Salin (fore-arc) <span class="hlt">basin</span>, Myanmar</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Trevena, A.S.; Varga, R.J. ); Collins, I.D.; Nu, U. )</p> <p>1991-03-01</p> <p>Salin <span class="hlt">basin</span> of central Myanmar is a tertiary fore-arc <span class="hlt">basin</span> that extends over 10,000 mi{sup 2} and contains 30,000+ ft of siliciclastic rocks. In the western Salin <span class="hlt">basin</span>, Tertiary deltaic and fluvial formations contain thousands of feet of lithic sandstones that alternate with transgressive shallow marine shales. Facies and paleocurrent studies indicate deposition by north-to-south prograding tidal deltas and associated fluvial systems in a semi-restricted <span class="hlt">basin</span>. Presence of serpentinite and volcanic clasts in Tertiary sandstones may imply that the <span class="hlt">basin</span> was bounded to the east by the volcanic arc and to the <span class="hlt">west</span> by a fore-arc accretionary ridge throughout much of the Cenozoic. Salin <span class="hlt">basin</span> is currently defined by a regional north/south-trending syncline with uplifts along the eastern and western margins. Elongate folds along the eastern <span class="hlt">basin</span> margin verge to the east and lie above the reverse faults that dip <span class="hlt">west</span>; much of Myanmar's present hydrocarbon production is from these structures. Analogous structures occur along the western margin, but verge to the <span class="hlt">west</span> and are associated with numerous hydrocarbon seeps and hand-dug wells. These <span class="hlt">basin</span>-bounding structures are the result of fault-propagation folding. In the western Salin <span class="hlt">basin</span>, major detachments occur within the shaly Tabyin and Laungshe formations. Fault ramps propagated through steep forelimbs on the western sides of the folds, resulting in highly asymmetric footwall synclines. Stratigraphic and apatite fission track data are consistent with dominantly Plio-Pleistocene uplift, with limited uplift beginning approximately 10 Ma. Paleostress analysis of fault/slickenside data indicates that fold and thrust structures formed during regional east/<span class="hlt">west</span> compression and are not related in any simple way to regional transpression as suggested by plate kinematics.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2015AGUFMGC44B..03L','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2015AGUFMGC44B..03L"><span>Hydrological trends in Congo <span class="hlt">basin</span> (Central Africa)</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Laraque, A.</p> <p>2015-12-01</p> <p>The last studies concerning some main Congo <span class="hlt">basin</span> rivers allowed to subdivide their multi-annual flows into several homogeneous phases. As in <span class="hlt">West</span> Africa, 1970 was the year of the major hydroclimatic event announcing a weaker flowing period. In the absence of long, reliable and available flow series in the whole Congo <span class="hlt">basin</span> of 3,8 106km2 area, the present study concerns only the Congo River at Brazzaville/Kinshasa and two of the main tributaries of its right bank, Ubangui at Bangui and Sangha at Ouesso, with hydrologic data available from the first half of the 20th century. For Congo River, in comparison with its secular average, after an excess flow noted during the sixties, a significant drop of 10% occurs in the eighties. However, a return to normal conditions is recorded from 1995. For Ubangui and Sangha, the flows remain weaker since 1970. Within the bi-modal hydrological regimes of Sangha and Congo river, because they are equatorial, we also observe since many years a small decline of the secondary flood of april-june. This phenomenon was emphasized especially these last years and is founded in others rivers of Central Africa, where it reflects the variations of de rainfall patterns and the surfaces features. For the Congo <span class="hlt">basin</span>, the situation is worrying because that affects the inland waterway transport. Moreover that wakes also the project of junction by a canal of the Congo and Chari <span class="hlt">basins</span> for fighting against the hydrological decline of Lake Chad.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/6469735','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/6469735"><span>Miocene temblor formation and related <span class="hlt">basin</span> evolution, southwestern San Joaquin <span class="hlt">Basin</span>, California</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Gillespie, B.W.</p> <p>1988-01-01</p> <p>The southwestern San Joaquin <span class="hlt">basin</span> is an area of great importance for the energy industry and academic <span class="hlt">basin</span> analysts. Understanding <span class="hlt">basin</span> evolution is a key concern for explorationists in this essentially pristine province. Temblor Formatio is exposed in an east-<span class="hlt">west</span>-trending belt that comprises the north flank of the San Emigdio Mountains. Field and subsurface evidence were used to elucidate the geology, depositional environments, and age of the Temblor Formation. The formation represents sand-rich borderland sedimentation in a predominantly deep-marine setting. Deposition of Temblor clastics reflects deformation due to the impingement of the Farallon Pacific ridge with the California-North American plate margin during the middle Oliocene. As a result, severe uplift along the margins of the southern San Joaquin <span class="hlt">basin</span>, reinforced by a lowstand of global seal level, caused large volumes of coarse, immature clastics to be shed into the rapidly subsiding deep-marine depocenter. Deposition of the Temblor was thus concurrent with the transformation from a convergent margin tectonic regime to one of dextral strike-slip. This transformation was marked by an episode of transform-extension indicated by volcanism, rapid subsidence, and marine transgression during the early Miocene. The Maricopa trough or oceanic connection from the San Joaquin <span class="hlt">basin</span> to the Pacific Ocean is inferred to have existed between Recruit Pass and Maricopa. The age of the Temblor Formation is late Oligocene to early Miocene. Petroleum production is limited to the upper member in small oil fields flanking the northern Sam Emigdio Mountains.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/907916','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/907916"><span>Preliminary Geologic Characterization of <span class="hlt">West</span> Coast States for Geologic Sequestration</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Larry Myer</p> <p>2005-09-29</p> <p>Characterization of geological sinks for sequestration of CO{sub 2} in California, Nevada, Oregon, and Washington was carried out as part of Phase I of the <span class="hlt">West</span> Coast Regional Carbon Sequestration Partnership (WESTCARB) project. Results show that there are geologic storage opportunities in the region within each of the following major technology areas: saline formations, oil and gas reservoirs, and coal beds. The work focused on sedimentary <span class="hlt">basins</span> as the initial most-promising targets for geologic sequestration. Geographical Information System (GIS) layers showing sedimentary <span class="hlt">basins</span> and oil, gas, and coal fields in those <span class="hlt">basins</span> were developed. The GIS layers were attributed with information on the subsurface, including sediment thickness, presence and depth of porous and permeable sandstones, and, where available, reservoir properties. California offers outstanding sequestration opportunities because of its large capacity and the potential of value-added benefits from enhanced oil recovery (EOR) and enhanced gas recovery (EGR). The estimate for storage capacity of saline formations in the ten largest <span class="hlt">basins</span> in California ranges from about 150 to about 500 Gt of CO{sub 2}, depending on assumptions about the fraction of the formations used and the fraction of the pore volume filled with separate-phase CO{sub 2}. Potential CO{sub 2}-EOR storage was estimated to be 3.4 Gt, based on a screening of reservoirs using depth, an API gravity cutoff, and cumulative oil produced. The cumulative production from gas reservoirs (screened by depth) suggests a CO{sub 2} storage capacity of 1.7 Gt. In Oregon and Washington, sedimentary <span class="hlt">basins</span> along the coast also offer sequestration opportunities. Of particular interest is the Puget Trough <span class="hlt">Basin</span>, which contains up to 1,130 m (3,700 ft) of unconsolidated sediments overlying up to 3,050 m (10,000 ft) of Tertiary sedimentary rocks. The Puget Trough <span class="hlt">Basin</span> also contains deep coal formations, which are sequestration targets and may have</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2016EGUGA..18.8648C','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2016EGUGA..18.8648C"><span>Tectono-stratigraphic evolution of the northeastern Pyrenean Foreland <span class="hlt">Basin</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Christophoul, Frédéric; Ford, Mary; Grool, Arjan; Géraldine, Rougier; Louis, Hemmer</p> <p>2016-04-01</p> <p>The Aquitaine <span class="hlt">basin</span>, on the northern flank of the Pyrenees was subject to intense hydrocarbon exploration until the 1990's, generating a huge dataset that has been under-exploited until now. In the framework of the French Pyramid ANR project this dataset was used, together with new field data, to reconstruct the evolution of this retroforeland <span class="hlt">basin</span>. This study focuses on the eastern retroforeland, from the Corbières to east to the Toulouse Fault to the <span class="hlt">west</span>. In terms of age, the main depocentres are however contemporary along the whole eastern <span class="hlt">basin</span>: 1) From Upper Cretaceous to Paleocene (Campanian to Selandian) the early foreland <span class="hlt">basin</span>, known as the "Flysch Trough", was filled by a succession of turbidites passing upward into fluvial sediments that prograded axially from the east. 2) From Thanetian to Oligocene, a second cycle started with a deepening upward trend until the Ypresian (inner carbonate platform to mixed open marine) and changed to a shallowing upward succession, passing from open marine sediments, coastal clastic deposits and then to coarse fluvial deposits from Upper Ypresian to Oligocene. Progradation was again initially axial from the east. However, a new south to north fluvial drainage developed from the emerging relief of the Pyrenees to the south. In terms of location and structural style of these depocentres, the salt-free eastern <span class="hlt">basin</span> (from the Corbières in the east to the Toulouse Fault to the <span class="hlt">west</span>) reveals a distinctive style to the salt-rich western <span class="hlt">basin</span>. In eastern foreland (Corbières to Aude Valley), syntectonic depocentres migrated north as a series of wedge-top <span class="hlt">basins</span> between Late Cretaceous and Late Eocene. The thick-skinned syn-sedimentary foreland structures progressively die out westward. In the western part of the study area (Plantaurel to Petites Pyrenees) stacked depocentres of the same age are preserved in the footwall of the North Pyrenean Frontal thrust recording a slower northward migration associated with a northward</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/325648','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/325648"><span>Data quality objectives for K <span class="hlt">West</span> canister sludge sampling</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Makenas, B.J., Westinghouse Hanford</p> <p>1996-12-11</p> <p>Data Quality Objectives have been developed for a limited campaign of sampling K <span class="hlt">Basin</span> canister sludge. Specifically, samples will be taken from the sealed K <span class="hlt">West</span> <span class="hlt">Basin</span> fuel canisters. Characterization of the sludge in these canisters will address the needs of fuel retrieval which are to collect and transport sludge which is currently in the canisters. Data will be gathered on physical properties (such as viscosity, particle size, density, etc.) as well as on chemical and radionuclide constituents and radiation levels of sludge. The primary emphasis will be on determining radionuclide concentrations to be deposited on Ion Exchange Modules (IXMS) during canister opening and fuel retrieval. The data will also be useful in determining whether K <span class="hlt">West</span> <span class="hlt">Basin</span> sludge meets the waste acceptance criteria for Hanford waste tanks as a backup disposal concept and these data will also supply information on the properties of sludge material which will1403 accompany fuel elements in the Multi-Canister Overpacks (MCOS) as envisioned in the Integrated Process Strategy (IPS).</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/7120149','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/7120149"><span>Relationship of Laramide and <span class="hlt">basin</span> and range structures in the Pedregosa <span class="hlt">basin</span>, southwestern New Mexico</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Chang, J.; Miller, K.C.; Thompson, S. III; Keller, G.R. )</p> <p>1994-03-01</p> <p>The Pedregosa <span class="hlt">basin</span> of southwestern New Mexico has long been recognized as a frontier hydrocarbon exploration target. The Paleozoic sedimentary rocks contain petroleum source and reservoir units that correlate with important producing zones in the Permian <span class="hlt">basin</span> of <span class="hlt">west</span> Texas and southeastern New Mexico. Factors that are commonly considered to limit the petroleum potential of the region include multiple episodes of deformation, heating due to local igneous intrusion and volcanism, and fresh-water flushing. Laramide (late Cretaceous-early Tertiary) fold-and-thrust traps are structural targets. Subsequent fracturing by <span class="hlt">Basin</span> and Range (late Tertiary) normal faulting may have partially destroyed the Laramide traps. Seismic reflection and gravity data from the Playas and Hatchita valleys in southwestern New Mexico constrain the structural styles of Laramide shortening and later <span class="hlt">Basin</span> and Range extensional deformation. These data show that Precambrian basement was involved in Laramide thrusting. This observation refutes the interpretation of some previous workers who interpreted the Precambrian basement surface as a regional decollement for Laramide thrusting. An east-<span class="hlt">west</span> seismic profile that crosses the southeast end of the Little Hatchet Mountains images a range-bounding listric normal fault and associated antithetic faults beneath the Hatchita Valley fill. Near the range, [open quotes]antithetic[close quotes] faults show a normal sense of motion, but farther east, faults are reverse. The latter may be high-angle Laramide structures or unusual features of <span class="hlt">Basin</span> and Range deformation. The major range-bounding fault is steeply dipping Near the surface, but becomes a low-angle listric fault at a depth of about 10 km.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2014EGUGA..16.2862J','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2014EGUGA..16.2862J"><span>Oceanography of <span class="hlt">West</span> Madagascar</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>John, Bemiasa</p> <p>2014-05-01</p> <p>During six week survey (August - October 2009) in Western and Northern coast of Madagascar, the R/V 'Dr. Fridtjof Nansen' has carried out a study of the pelagic ecosystem. In collaboration with Agulhas & Somali Current Large Marine Ecosystems project (ASCLME) and South <span class="hlt">West</span> Indian Ocean Fisheries Project (SWIOFP), the aim of the survey was to establish the physical, chemical and biological characteristics of the Western Madagascar shelf region as a whole. Along selected hydrographical transects, a total of 182 CTD stations were conducted and ranged to a maximum of 3000 m depth. Water samples were also collected with Niskin bottles at predefined depths. A Seabird 911plus CTD was used to obtain vertical profiles of temperature, salinity and oxygen. As results, along the <span class="hlt">west</span> and south coast of Madagascar, the shelf is narrow and widen slightly along the north-<span class="hlt">west</span> coast. In all ten transects the isotherms showed stratified waters from the coast to offshore. A maximum salinity layer was observed at subsurface in all transects. Dissolved oxygen had a maximum at around 500 m depth in all transects. Low fluorescence values were observed in the upper 150-200 m, with maximum values in the range of 0.14-0.22 µg/l at intermediate layers. The conditions were consistent along and between the transects, with more variation observed at transect 9. No upwelling was observed along the western coast. The surface temperature (5 m depth) increased from 22°C in the south to 26°C in the north. The horizontal distribution of surface salinities showed homogenous conditions with values between 35.4psu (south) and 35.0 psu (north). Also starting from the coast to offshore, both the surface temperatures and surface salinities showed homogenous patterns.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.dtic.mil/docs/citations/ADA274608','DTIC-ST'); return false;" href="http://www.dtic.mil/docs/citations/ADA274608"><span><span class="hlt">West</span> Desert Pumping Project</span></a></p> <p><a target="_blank" href="https://publicaccess.dtic.mil/psm/api/service/search/search">DTIC Science & Technology</a></p> <p></p> <p>1986-07-01</p> <p>office 0 ELECTE Salt Lake City, Utah JA 0 6 1994 July, 1986 A document ens n appo for ublic relleeasse cand ssa1 its V4 awn% Ita MI II United States...Department of the Interior BUREAU OF LAND MANAGEMENT SALT LAKE DISTRICT OFFICE2370 Sot 23 <span class="hlt">West</span> 1792 Salt L~e City. Utah $4119 (U-022) Dear Reader...1labIrv’y -’odes Aka-l e;,d or Prepared By Dist BUREAU OF LAND MANAGEMENT DEPARTMENT OF THE INTERIOR DTK•••D Q’AJATY INSPECTED 8 UTAH STATE DIRECTOR 94 1, 5</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.dtic.mil/docs/citations/ADA349263','DTIC-ST'); return false;" href="http://www.dtic.mil/docs/citations/ADA349263"><span>JPRS Report, <span class="hlt">West</span> Europe</span></a></p> <p><a target="_blank" href="https://publicaccess.dtic.mil/psm/api/service/search/search">DTIC Science & Technology</a></p> <p></p> <p>2007-11-02</p> <p>in French 24 Jun 87 p 2 [Article by Ch. B.] [Text] A crisis? In the PSC? You’re dreaming . Or else you are seeking to destroy stability in the...partners. The ups and downs of recent weeks have done him harm, and it said that he dreams of distancing himself somewhat. If only Willy De Clercq were...a lucid and objective account of his subject matter. It is still quite common for more or less well-informed <span class="hlt">West</span> Europeans to use the term</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://ntrs.nasa.gov/search.jsp?R=PIA04101&hterms=Barchan&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D50%26Ntt%3DBarchan','NASA-TRS'); return false;" href="https://ntrs.nasa.gov/search.jsp?R=PIA04101&hterms=Barchan&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D50%26Ntt%3DBarchan"><span><span class="hlt">West</span> Arabia Barchans</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p></p> <p>2005-01-01</p> <p><p/> 16 July 2005 This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows small barchan dunes on the floor of a crater in western Arabia Terra. Similar dunes are found in most of the larger craters of the region. The steepest slopes on these dunes, their slipfaces, point toward the <span class="hlt">west</span>-southwest, indicating that dominant winds blow from the east-northeast (upper right). <p/> <i>Location near</i>: 10.9oN, 2.8oW <i>Image width</i>: width: 3 km (1.9 mi) <i>Illumination from</i>: lower left <i>Season</i>: Northern Autumn</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70025760','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70025760"><span>Amplification of seismic waves by the Seattle <span class="hlt">basin</span>, Washington State</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Pratt, T.L.; Brocher, T.M.; Weaver, C.S.; Creager, K.C.; Snelson, C.M.; Crosson, R.S.; Miller, K.C.; Trehu, A.M.</p> <p>2003-01-01</p> <p>Recordings of the 1999 Mw 7.6 Chi-Chi (Taiwan) earthquake, two local earthquakes, and five blasts show seismic-wave amplification over a large sedimentary <span class="hlt">basin</span> in the U.S. Pacific Northwest. For weak ground motions from the Chi-Chi earthquake, the Seattle <span class="hlt">basin</span> amplified 0.2- to 0.8-Hz waves by factors of 8 to 16 relative to bedrock sites <span class="hlt">west</span> of the <span class="hlt">basin</span>. The amplification and peak frequency change during the Chi-Chi coda: the initial S-wave arrivals (0-30 sec) had maximum amplifications of 12 at 0.5-0.8 Hz, whereas later arrivals (35-65 sec) reached amplifications of 16 at 0.3-0.5 Hz. Analysis of local events in the 1.0- to 10.0-Hz frequency range show fourfold amplifications for 1.0-Hz weak ground motion over the Seattle <span class="hlt">basin</span>. Amplifications decrease as frequencies increase above 1.0 Hz, with frequencies above 7 Hz showing lower amplitudes over the <span class="hlt">basin</span> than at bedrock sites. Modeling shows that resonance in low-impedance deposits forming the upper 550 m of the <span class="hlt">basin</span> beneath our profile could cause most of the observed amplification, and the larger amplification at later arrival times suggests surface waves also play a substantial role. These results emphasize the importance of shallow deposits in determining ground motions over large <span class="hlt">basins</span>.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/6982914','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/6982914"><span>Soekor, partners explore possibilities in Bredasdorp <span class="hlt">basin</span> off South Africa</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Burden, P.L.A. Ltd., Parow, )</p> <p>1992-12-21</p> <p>This paper reports on the Bredasdorp <span class="hlt">basin</span>, situated off the south coast of the Republic of South Africa, southeast of Cape Town and <span class="hlt">west</span>-southwest of Port Elizabeth. Both cities have modern deepwater harbor facilities. Infrastructure along the coast includes well developed road, air, and rail links. A petrochemical plant for the conversion of off-shore gas and condensate to hydrocarbon fuels as well as certain chemical feedstocks has recently been completed at Mossel Bay about 100 km north of the Bredasdorp <span class="hlt">basin</span>. Refineries are situated at Cape Town and Durban.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_2