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1

Cenozoic remagnetization of the Paleozoic rocks in the Kitakami massif of northeast Japan, and its tectonic implications  

Microsoft Academic Search

Secondary remanent magnetization is identified in the Paleozoic igneous and sedimentary rocks of the Kitakami massif. The secondary nature is shown by a negative fold test for the Permo–Carboniferous sedimentary rocks. The northwesterly paleomagnetic declination with moderate inclination (D=321.2°, I=56.5°, ?95=5.2°, N=18) of this secondary remanent magnetization is almost parallel to the primary magnetization reported for the Cenozoic welded tuffs

Yo-Ichiro Otofuji; Kazuhiro Takemoto; Haider Zaman; Yoshitomo Nishimitsu; Yutaka Wada

2003-01-01

2

Multi-component reflection survey with MEMS accelerometer for Vp/Vs estimation across the Kitakami Lowland, Northeast Japan  

NASA Astrophysics Data System (ADS)

The geometry of geological structure and the velocity distribution in sedimentary layers are very important information for the earthquake disaster prevention. The S wave velocity in sedimentary layers is fundamental to estimate strong ground motions which likely damage the human activity. Multi-component reflection survey can provide more information about rock properties and occasionally better subsurface image than using only conventional PP reflections. In this study, we applied PS imaging and tomographic inversion to land 3C reflection seismic data in order to estimate the Vp/Vs ratio and Vs structures in sedimentary layers across the Kitakami Lowland (KL), northeast Japan. The KL is located at the eastern edge of the Miocene rift system of northern Honshu Island. The western marginal faults are commonly recognized as active reverse faults re-activated after crustal stretching during Miocene back arc spreading and subsequent lithospheric cooling. The multi-component data were acquired on a 20 km-long seismic survey line across the KL with 800 three-component MEMS accelerometers with 25 m spacing, and 175 vibrator shots. In data processing, the vertical component is used for the conventional PP reflection imaging, and the radial component from each shot point after azimuth rotation is used for the PS conversion imaging. The obtained seismic sections from PP and PS processing clearly show the subsurface structures from the sedimentary layers to the basement and the form of west dipping listric faults. The Vp/Vs ratio is estimated by direct event matching of interpreted horizons between two seismic sections in time domain. We could estimate Vp/Vs from 2.1 to 3.3 up to 3km in depth above the basement. Furthermore, S wave velocity can be calculated from the P wave velocity model and the estimated Vp/Vs ratio. Refraction traveltime tomography using the first arrival time of P and S waves directly solves Vp and Vs structures. By comparing the Vp and Vs tomograms, we obtained the detailed Vp/Vs ratio in shallow zone in sedimentary layers up to about 1km in depth. The multi-component reflection survey with the PS converted wave analysis and the refraction traveltime tomography, the Vp/Vs ratio and the S wave structure are reasonably estimated which are useful information for the earthquake disaster prevention.

Shiraishi, K.; Abe, S.; Saito, H.; Sato, H.; Koshiya, S.; Kato, N.; Kawanaka, T.

2009-12-01

3

Magnetic and gravity constraints on forearc upper crustal structure and composition, offshore northeast Japan  

USGS Publications Warehouse

Marine magnetic and gravity data from the northeast Japan forearc offer insight to the subsurface structure, density and magnetization from which geologic interpretations and tectonic reconstructions can be made. Positive marine magnetic anomalies, on-land geology, drill hole data, and 2-1/2-dimensional models reveal that Kitakami plutons and possibly their associated volcanic rocks constitute part of the modern forearc basement and lie 100-150 km further east than previously thought. A method to create magnetization and density contrast maps was employed to produce a three-dimensional picture of the forearc basement rock properties averaged over a 14-km thickness. -Author

Finn, C.

1994-01-01

4

Kondyor Massif, Russia  

NASA Technical Reports Server (NTRS)

This is neither an impact crater nor a volcano. It is a perfect circular intrusion, about 10 km in diameter with a topographic ridge up to 600 m high. The Kondyor Massif is located in Eastern Siberia, Russia, north of the city of Khabarovsk. It is a rare form of igneous intrusion called alkaline-ultrabasic massif and it is full of rare minerals. The river flowing out of it forms placer mineral deposits. Last year 4 tons of platinum were mined there. A remarkable and very unusual mineralogical feature of the deposit is the presence of coarse crystals of Pt-Fe alloy, coated with gold. This 3-D perspective view was created by draping a simulated natural color ASTER composite over an ASTER-derived digital elevation model.

The image was acquired on June 10, 2006, and is located at 57.6 degrees north latitude, 134.6 degrees east longitude.

The U.S. science team is located at NASA's Jet Propulsion Laboratory, Pasadena, Calif. The Terra mission is part of NASA's Science Mission Directorate.

2008-01-01

5

Ichthyofauna of the Kubo, Tochikura, and Ichinono river systems (Kitakami River drainage, northern Japan), with a comparison of predicted and surveyed species richness  

PubMed Central

Abstract The potential fish species pool of the Kubo, Tochikura, and Ichinono river systems (tributaries of the Iwai River, Kitakami River drainage), Iwate Prefecture, northern Japan, was compared with the observed ichthyofauna by using historical records and new field surveys. Based on the literature survey, the potential species pool comprised 24 species/subspecies but only 20, including 7 non-native taxa, were recorded during the fieldwork. The absence during the survey of 11 species/subspecies from the potential species pool suggested either that sampling effort was insufficient, or that accurate determination of the potential species pool was hindered by lack of biogeographic data and ecological data related to the habitat use of the species. With respect to freshwater fish conservation in the area, Lethenteron reissneri, Carassius auratus buergeri, Pseudorasbora pumila, Tachysurus tokiensis, Oryzias latipes, and Cottus nozawae are regarded as priority species, and Cyprinus rubrofuscus, Pseudorasbora parva, and Micropterus salmoides as targets for removal. PMID:25425932

Nakae, Masanori; Senou, Hiroshi

2014-01-01

6

The tectonics of anorthosite massifs  

NASA Technical Reports Server (NTRS)

Anorthosite massifs developed approximately 1.4 to 1.5 billion years ago along an arch which developed parallel to a zone of continental separation as a block which included North America, Europe, and probably Asia separated from a block which included parts of South America, Africa, India, and Australia. Anorthosite massifs also developed at the same time along a belt which runs through the continents which comprise Gondwanaland (South America), Africa, India, Australia, and Antarctica. This was a zone of continental separation which subsequently became a zone of continental collision about 1.2 billion years ago. The northern anorthosite belt also parallels an orogenic belt which was active between 1.8 and 1.7 billion years ago. Heat generated during this mountain building period helped in the formation of the anorthosites.

Seyfert, C. K.

1981-01-01

7

Données nouvelles sur les chevauchements d'âge post-Crétacé supérieur dans le massif du Païkon (zone de l'Axios-Vardar, Macédoine, Grèce) :un nouveau modèle structural  

Microsoft Academic Search

In the Axios-Vardar zone, the western Païkon massif is composed of a pile-up of southwest-dipping tectonic slices whose vergence is top-to-the-northeast. The eastern Païkon is composed of two east-dipping sheets which, with a vergence top-to-the-southwest, overthrust the tectonic slices of the western Païkon. The Païkon massif is not a new multiple tectonic window in the internal Hellenic zones similar to

Pierre Vergély; Jacques-Louis Mercier

2000-01-01

8

Exhumation of the Sucking-Dayman Massif, Papua New Guinea  

NASA Astrophysics Data System (ADS)

Extension, evident as seafloor spreading in the Woodlark Basin, is actively propagating into the continental crust of Eastern Papua New Guinea, where regional ductile shear zones and brittle faults have recently exhumed metabasite rocks of the Suckling-Dayman Massif (9.5-10°S, 149-150°E). Utilising field, petrographic microscope and electron microprobe analyses, we investigate the structural and kinematic evolution of the Dayman shear zone, as well as the mineral chemistry of key metamorphic assemblages that define the shear zone fabrics. The results of this investigation indicate that the Dayman shear zone is an extensional shear zone with top to the north-northeast transport. Macro- and micro-kinematic indicators in the ductile shear zone include common S-C fabric, mantled porphyroclasts, `mica' fish, pressure shadows on pyrite, grain-scale faults, and asymmetric micro-boudinage. Kinematic indicators display a very regular sense of shear consistent with a simple shear dominated shear zone. The shear zone fabric is defined by dominantly greenschist facies metamorphic assemblages including abundant chlorite, epidote, albite and quartz with or without actinolite, titanite and calcite. Low strain pods within the shear zone display relict mafic igneous textures and relict clinopyroxene. The pods may include metamorphic lawsonite and blue amphibole in the mineral assemblage, suggestive of high P/T metamorphism of the metabasite massif prior to exhumation. Sedimentary rocks of the hanging wall include the Gwoira Conglomerate that contains clasts of low-grade (prehnite-pumpellyite facies) sheared metabasite. Metamorphic minerals identified in clasts include prehnite, pumpellyite, chlorite, albite, quartz and epidote. Monomineralic clasts include clinopyroxene, albite and quartz. The majority of clasts are consistent with a low-grade metabasite source that may or may not be sheared. A minor component of the clasts include graphitic intergrowths of quartz and feldspar, consistent with a pegmatitic to felsic source. Rare horizons in the Gwoira Conglomerate contain abundant shallow marine fossils. These observations suggest that the provenance for the Gwoira Conglomerate may include early exhumed low-grade metabasite of the Suckling- Dayman massif and that Gwoira Conglomerate may have been deposited on the flanks of the actively exhuming massif. A lack of metamorphism or ductile deformation in the Gwoira Conglomerate supports this interpretation.

Daczko, N. R.; Caffi, P.; Carroll, S. A.

2007-05-01

9

Northeast Region Sustainable Development Partnership  

E-print Network

Northeast Region Sustainable Development Partnership Northeast Minnesota Industry Cluster Study Wittrock, Research Assistant with support from: Northeast Region Sustainable Development Partnership Profiles A. Forest Products ............................................................ 13 B. Tourism

Levinson, David M.

10

Igneous pyroxenes from metamorphosed anorthosite massifs  

Microsoft Academic Search

Anorthosites, mangerites and charnockites from metamorphosed anorthosite massifs (the Adirondacks and elsewhere) commonly contain coarsely exsolved pyroxenes with substantial amounts of exsolved orthopyroxene (in clinopyroxene) and clinopyroxene (in orthopyroxene). Electron microprobe reintegration of such pyroxenes yields compositions which indicate that pigeonite and subcalcic augite coexisted before metamorphic reequilibration. Equilibration temperatures of 1100 °±100 °C for anorthosite and 1000 °C±100 °C

S. R. Bohlen; E. J. Essene

1978-01-01

11

Structural Constraints on the Evolution of the Nyainqentanglha Massif, Southeastern Tibet  

NASA Astrophysics Data System (ADS)

The Nyainqentanglha massif, in the footwall of the Nyainqentanglha shear zone (NSZ), is part of the most prominent rift system in southern Tibet and uniquely exposes mid to upper-crustal rocks. These rocks include Paleozoic metasediments, Cretaceous-Tertiary(?) redbeds, and a collage of undeformed, calc-alkaline Triassic to late Miocene granitoids. Many of the granitoids are part of the Gangdese arc, which formed during closure of the Tethys ocean, and are 140 to 50 Ma, while leucogranites range in age from 30 to 8 Ma. Previous studies documented a SE-dipping low-angle (~30°) shear zone, which initiated at ~8 Ma, bounding the southeastern margin of the central portion of the massif. However, the nature of the shear zone along strike to the northeast, and structural relationships between footwall lithologies, were not well studied. It was previously inferred that crystalline rocks within the core of the massif were in fault contact with Paleozoic metasediments. However, recent geologic mapping indicate that contacts between granitoids and metasediments are everywhere intrusive. In addition, U-Pb ion-microprobe studies of zircon from a rounded granite clast within a micaceous schist yield an age of 121 Ma, suggesting that metasediments previously mapped as Paleozoic on the NW side of the massif may be Cretaceous or younger in age. Previous workers have established that the central portion of the NSZ is characterized by a >1-km-thick zone of mylonitic orthogneiss. It exhibits a prominent S-C fabric and down-dip lineations, indicating top-to-the-southeast motion. To the northeast in the Lagen La valley, the main route to Nam Co, a subvertical, strike-slip, E-W-striking shear zone has been documented within phyllite and schist. However, the structural and timing relations between this subvertical shear zone and the low-angle shear zone to the south were not established. Our mapping shows that the low-angle shear zone lies structurally above and cuts the strike-slip shear zone near the range front, several hundred meters above the valley floor. This indicates that the strike-slip shear zone could have significantly predated rift formation. About 15 km northeast of Damxung, the orientation of the massif changes from NE-SW to ~E-W. Here, the range front is characterized by an ~1-km-thick, E-W striking shear zone comprised of quartz-mica schist and lineated marble. The shear zone dips at a low angle to the south and exhibits sub-horizontal lineations. It grades structurally below into broadly folded, but nonlineated, limestones and sandstones. The shear zone northeast of Damxung exhibits less structural throw than the SE dipping shear zone to the south. This observation, together with the consistent low-angle nature of the shear zone despite an abrupt change in its orientation and lineation direction, makes it difficult to interpret the evolution of this low angle shear zone in the context of popular models of low angle normal fault systems.

Kapp, J.; Harrison, M.; Grove, M.; Kapp, P.; Ding, L.; Lovera, O.

2002-12-01

12

Données nouvelles sur les chevauchements d'âge post-Crétacé supérieur dans le massif du Païkon (zone de l'Axios-Vardar, Macédoine, Grèce):un nouveau modèle structuralNew data concerning thrusting subsequent to the Late Cretaceous in the Païkon massif (Axios-Vardar zone, Macedonia, Greece): a new structural model.  

NASA Astrophysics Data System (ADS)

In the Axios-Vardar zone, the western Païkon massif is composed of a pile-up of southwest-dipping tectonic slices whose vergence is top-to-the-northeast. The eastern Païkon is composed of two east-dipping sheets which, with a vergence top-to-the-southwest, overthrust the tectonic slices of the western Païkon. The Païkon massif is not a new multiple tectonic window in the internal Hellenic zones similar to the Olympus window. During the Late Cretaceous, it was a carbonated platform which bounded the Almopias through to the east. It was deformed as imbricated tectonic slices with a vergence top-to-the-northeast during the Early-Mid Eocene; it was then covered by the Guevgueli ophiolitic sheet, thrust top-to-the-southwest, at the end of the Eocene.

Vergély, Pierre; Mercier, Jacques-Louis

2000-04-01

13

Three steps of serpentinization in an eclogitized oceanic serpentinization front (Lanzo Massif Western Alps)  

E-print Network

Three steps of serpentinization in an eclogitized oceanic serpentinization front (Lanzo Massif retracing the different serpentinization episodes and their impact on the massif structure. The Lanzo massif is composed of slightly serpentinized peridotites (serpentinization) surrounded by an envelope

Nicollet, Christian

14

The Lassell Massif - a Silicic Lunar Volcano  

NASA Astrophysics Data System (ADS)

Lunar volcanic processes were dominated by mare-producing basaltic extrusions. However, limited occurrences of non-mare, geochemically evolved (Si-enriched) volcanic deposits have long been suspected on the basis of spectral anomalies (red spots), landform morphologies, and the occurrence of minor granitic components in Apollo sample suites [e.g., 1-5]. The LRO Diviner Lunar Radiometer Experiment (Diviner) measured thermal emission signatures considered diagnostic of highly silicic rocks in several red spot areas [6,7], within the Marius domes [8], and from the Compton-Belkovich feature on the lunar farside [9]. The present study focuses on the Lassell massif red spot (14.73°S, 350.97°E) located in northeastern Mare Nubium near the center of Alphonsus A crater. Here we use Diviner coverage co-projected with Lunar Reconnaissance Orbiter Camera (LROC) images [10] and digital elevation models to characterize the Lassell massif geomorphology and composition. Localized Diviner signatures indicating relatively high silica contents correlate with spatially distinct morphologic features across the Lassell massif. These features include sub-kilometer scale deposits with clear superposing relationships between units of different silica concentrations. The zone with the strongest signal corresponds to the southern half of the massif and the Lassell G and K depressions (formerly thought to be impact craters [11]). These steep-walled pits lack any obvious raised rims or ejecta blankets that would identify them as impact craters; they are likely explosive volcanic vents or collapse calderas. This silica-rich area is contained within the historic red spot area [4], but does not appear to fully overlap with it, implying compositionally distinct deposits originating from the same source region. Low-reflectance deposits, exposed by impact craters and mass wasting across the massif, suggest either basaltic pyroclastics or minor late-stage extrusion of basaltic lavas through vents within the structure. The Lassell massif is thus a volcanic construct with a range of silica concentrations. Based on landform morphology, some deposits appear enriched enough in silica to affect magma viscosity, the character of extrusion, and edifice construction. Stratigraphic relationships between the massif and surrounding deposits suggest that at least some volcanic activities associated with the massif occurred after mare emplacement. Together with volcanic features in the surrounding region, a compositionally and temporally complex volcanic history is supported for this portion of Mare Nubium. Magma production, extrusion, and timing of emplacement models would benefit from petrologic studies of new samples returned from this region. References: [1] Hagerty J. J. et al., (2006) JGR 111 (E06002). [2] Wagner R. et al., (2010) JGR 115 (E06015). [3] Wood C. A. and Head III J. W. (1975) Conf. on Origins of Mare Basalts, Lunar Sci. Inst., Houston, TX. [4] Whitaker E. A. (1972) Apollo 16 Prelim. Sci. Rpt. NASA SP-315, pp. 29-104 to 29-105. [5] Jolliff B. L. et al., (1991) Lunar Planet. Sci. Conf. XXI, 101-118. [6] Glotch T. D. et al., (2010) Science 329, 1510-1513. [7] Greenhagen B. T. et al., (2010) Science 329, 1507-1509. [8] Glotch T. D. et al., (2011) GRL, 38(L21204). [9] Jolliff B. L. et al., (2011) Nat Geosci. 4. [10] Robinson M. S. et al., (2010) Space Sci. Rev. 150(1-4), 81-124. [11] Wilhelms D. E. (1972) USGS Map I-722.

Ashley, J.; Robinson, M. S.; Stopar, J. D.; Glotch, T. D.; Hawke, B. R.; Lawrence, S. J.; Jolliff, B. L.; Greenhagen, B. T.; Paige, D. A.

2013-12-01

15

Apatite fission-track dating and low-temperature history of the Bavarian Forest (southern Bohemian Massif)  

NASA Astrophysics Data System (ADS)

Apatite fission-track (AFT) dating applied to uplifted Variscan basement blocks of the Bavarian Forest is employed to unravel the low-temperature history of this segment of the Bohemian Massif. Twenty samples were dated and confined track lengths of four samples were measured. Most samples define Cretaceous APT ages between 110 and 82 Ma (Albian to Campanian) and three samples give older ~148-140 Ma (Jurassic-Cretaceous boundary) ages. No discernible regional age variations exist between the areas north-east and south-west of the Pfahl shear zone, but >500 m post-Jurassic and post-Cretaceous vertical offsets along this and other faults can be inferred from elevation profile analyses. The AFT ages clearly postdate the Variscan exhumation history of the Bavarian Forest. Thermal modeling reveals that the ages are best explained by a slight reheating of the basement rocks to temperatures within the apatite partial annealing zone during the middle and late Jurassic and/or by late Cretaceous marine transgression causing burial heating, which affected marginal low-lying areas of the Bohemian Massif and the Bavarian Forest. Late Jurassic period was followed by enhanced cooling through the 120-60 °C temperature interval during the subsequent exhumation phase for which denudation rates of ~100 m myr-1 were calculated. On a regional scale, Jurassic-Cretaceous AFT ages are ubiquitous in marginal structural blocks of the Bohemian Massif and seem to reflect the exhumation of these zones more distinctly compared to central parts.

Vamvaka, A.; Siebel, W.; Chen, F.; Rohrmüller, J.

2014-01-01

16

NORTHEAST FISHERIES OBSERVER PROGRAM  

E-print Network

NORTHEAST FISHERIES OBSERVER PROGRAM BIOLOGICAL SAMPLING MANUAL 2010 U.S. Department of Commerce/NOAA Fisheries Service National Marine Fisheries Service Northeast Fisheries Science Center Fisheries Sampling ........................................................................................................ 1 Tables 1a.-h. Sampling Priority Tables by Fishery Gillnet and Beach Seine Fisheries, Table 1a

17

Evolution of the Bohemian Massif: Insights from numerical modeling  

E-print Network

Evolution of the Bohemian Massif: Insights from numerical modeling Petra Maierová Supervisor: Doc of Geophysics Faculty of Mathematics and Physics Charles University in Prague #12;February 4, 2013Evolution Conclusions Outline #12;February 4, 2013Evolution of the Bohemian Massif: Insights from numerical modeling 3

Cerveny, Vlastislav

18

Experimental and Modeling Studies of Massif Anorthosites  

NASA Technical Reports Server (NTRS)

This termination report covers the latter part of a single research effort spanning several grant cycles. During this time there was a single title, "Experimental and Modeling Studies of Massif Anorthosites", but there were several contract numbers as the mode and location of NASA contract administration changed. Initially, the project was funded as an increment to the PI's other grant, "Early Differentiation of the Moon: Experimental and Modeling Studies", but subsequently it became an independent grant. Table 1 contains a brief summary of the dates and contract numbers.

Longhi, John

1999-01-01

19

The western limits of the Seattle and Tacoma faults and their interaction with faults of the Olympic Massif, Washington (Invited)  

NASA Astrophysics Data System (ADS)

Recently acquired high-resolution seismic-reflection and magnetic data show that the Seattle fault of Washington State extends 24-km west of its previously mapped extent and thus comprises a >100-km-long active fault zone. These same data reveal largely concealed faults and folds that kinematically link the Seattle fault with active faults in the Olympic Massif. Linkage between the Seattle fault and the north-northeast-striking Saddle Mountain fault in the Olympic Massif may explain the synchroneity of M7 earthquakes occurring on both these faults approximately 1,100 years ago. The western limits of the 20-km-long east-striking Tacoma fault, a backthrust in the hanging wall of the Seattle fault zone, forms the southern margin of the Seattle uplift in contact with the Tacoma basin to the south. A ~20-km-long potential-field lineament extends from the western limits of the Tacoma fault northward to the Seattle fault and may reflect a structure linking these active faults. A geologic model based on magnetic, gravity, and seismic data shows that this potential-field lineament is likely caused by a low-angle, west-verging thrust fault, that we refer to as the Dewatto fault. We suggest that the Dewatto fault was initiated during exhumation of the Olympic Massif but, because of changes in principal strain direction, today largely accommodates north-directed, strike-slip motion along the west margin of the Seattle uplift. Thus, the Dewatto and Saddle Mountain faults and the western parts of the Seattle and Tacoma faults kinematically interact to accommodate north-directed horizontal displacement of the Seattle uplift relative to the Olympic Massif.

Lamb, A.; Blakely, R. J.; Liberty, L. M.; Pratt, T. L.; Sherrod, B. L.

2013-12-01

20

Water budget of the soils of sand massifs (with the Ust'-Kundryuchensk massif in rostov oblast as an example)  

NASA Astrophysics Data System (ADS)

Sand massifs in the steppe zone with coarse-textured sandy or loamy sandy soils are mainly characterized by the percolative type of the soil water regime. The annual precipitation penetrating into the groundwater through the aeration zone varies from 80% in the barren sands to 30% and lower in the overgrown sands. The study of the water budget of the Ust'-Kundryuchensk sand massif with an area of 15800 ha indicates that the total volume of the annual groundwater outflow from the massif reaches 10.5 million m3. The water discharged all year round from the sand massif into the Kundryuch'ya and Severskii Donets rivers is fresh and ultrafresh. It contributes to the water discharge of the rivers and desalinates the river water. This is an important nature-protection function of the sand massif.

Kulik, K. N.; Kulik, N. F.; Kulik, A. K.

2012-08-01

21

NORTHEAST CLIMATE DATA  

EPA Science Inventory

The Northeast Regional Climate Center (NRCC) database includes a complete collection of historical climate data for the northeastern United States as well as continually updated National Weather Service observations and forecasts. In addition, daily temperature and precipitation ...

22

Rare earth element geochemistry and strontium isotopic composition of a massif-type anorthositic-charnockitic body: the Hidra Massif (Rogaland, SW Norway)  

Microsoft Academic Search

The Hidra Massif (Rogaland Complex, SW Norway) mainly consists of plagioclase cumulates (anorthosites and leuconorites), which grade progressively into a fine-grained (200 m). locally porphyritic, jotunitic rock towards the contact with the granulite facies gneisses. The massif is cross-cut by thin (10 cm up to 1 m) charnockitic dykes. The petrographical and geochemical evolution of the Hidra Massif can be

Daniel Demaiffe; Jan Hertogen

1981-01-01

23

5. INTERIOR OF NORTHEAST ROOM AND MEZZANINE, NORTHEAST VIEW OF ...  

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

5. INTERIOR OF NORTHEAST ROOM AND MEZZANINE, NORTHEAST VIEW OF (HOISTS IN CENTER). - Vanadium Corporation of America (VCA) Naturita Mill, Sampling Building & Ore Receiving Platform, 3 miles Northwest of Naturita, between Highway 141 & San Miguel River, Naturita, Montrose County, CO

24

VIEW OF NORTHEAST TOWARD MAINTENANCE SHED AT NORTHEAST CORNER OF ...  

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

VIEW OF NORTHEAST TOWARD MAINTENANCE SHED AT NORTHEAST CORNER OF PARK - Candler Park Historic District, Roughly bounded by Moreland, Dekalb, McLendon & Harold Avenues, Matthews Street & Clifton Terrace, Atlanta, Fulton County, GA

25

The Serbo-Macedonian Massif, the oldest crustal segment of the internal Hellenides, identified by zircon ages  

NASA Astrophysics Data System (ADS)

The Serbo-Macedonian Massif (SMM) is situated between the Axios River and the Strimon River in northern Greece. It is a structurally complex basement inlier between the relatively homogeneous basement complexes of the Pelagonian Zone in the west and the Rhodope in the east. The boundary to the Pelagonian Zone is by the ophiolites of the Vardar Zone; the border to the Rhodope is still a matter of debate. Both massifs consist of arc related granitoids of Permo-Carboniferous age (270 Ma - 300 Ma, Turpaud &Reischmann, this volume). In this study we investigated the granitoid gneisses of the SMM and dated them using the single zircon evaporation method in order to unravel its geological evolution and its relation to the neighbouring massifs. The central part of the SMM is formed by the Vertiskos Unit. The rocks of this unit are very coarse-grained augengneisses of granitic composition, which originated in an arc environment. The zircons are mostly long-prismatic and clear and yielded ages between 426 and 435 Ma. This Silurian basement was intruded by granitoids of the Arnea suite from 210 Ma to 230 Ma. These granites generally have a reddish appearance, are rich in K-Feldspar and the zircons are small, brown and have simple morphologies. Geochemical data indicate an intraplate origin, which may be related to the rifting of a part of the Tethys Ocean. This unit is surrounded by a strongly tectonized unit of metasediments and gneisses. The oldest rocks of the SMM are exposed in the vicinity of the small harbour of Pirkadikia in the northeast of the Sithonia peninsula, where they form a small inlier in the metasedimentary unit. The rocks are mylonitic granitoid gneisses and have ages between 575 Ma and 587 Ma. Because all contacts are tectonic, there is no clear relation to the surrounding rocks. The eastern part of the SMM is made up by the Kerdillion unit an internally very homogeneous unit of biotite gneisses, which are intruded by an extraordinary amount of leucocratic dykes. This rock association of the SMM is distinctly different from the adjacent basement complexes. Especially the Precambrian and Silurian ages are unique in the internal massifs of the Hellenides. We conclude from these observations that the SMM is a distinct crustal unit and is no part of the Rhodope Massif as previously suggested (Ricou et al, 1998). References: Ricou, L.-E. et al., (1998): Geodynamica Acta (Paris), 11, 6, p. 285-309.

Himmerkus, F.; Reischmann, T.; Kostopoulos, D.

2003-04-01

26

Northeast Hellas Landscape  

NASA Technical Reports Server (NTRS)

MGS MOC Release No. MOC2-446, 8 August 2003

This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image of pitted terrain northeast of Hellas Basin shows light-toned outcrops of layered, sedimentary rock, and a valley floor covered by large, dark ripples or small dunes. Similar light-toned sedimentary materials are found throughout the region immediately northeast of Hellas, and in the crater, Terby. The area shown is 3 km (1.9 mi) wide and located near 27.5oS, 281.7oW. Sunlight illuminates the scene from the upper left.

2003-01-01

27

Re-Os geochemistry and geochronology of the Ransko gabbro-peridotite massif, Bohemian Massif  

NASA Astrophysics Data System (ADS)

The Ransko gabbro-peridotite massif in Eastern Bohemia is a strongly differentiated intrusive complex, which hosts low-grade Ni-Cu ores mainly developed close to the contact of olivine-rich rocks with gabbros, in troctolites, and to a much lesser extent in both pyroxene and olivine gabbros and plagioclase-rich peridotites. Gabbro, troctolite, peridotite and Ni-Cu ores from the Jezírka Ni-Cu (PGE) deposit, considered to be a typical example of the liquid segregation style of mineralization, were analyzed for Re-Os concentrations and isotopic ratios. Seven barren and mineralized samples from the Jezírka deposit yielded a Re-Os regression of 341.5 ± 7.9 Ma (MSWD = 69). Strongly mineralized peridotite with mantle-like initial 187Os/188Os ratio of 0.125 suggests that Os as well as other PGE present in the Ni-Cu mineralization are predominantly of mantle origin. On the other hand, barren and low-mineralized samples have radiogenic initial 187Os/188Os ratios of 0.14-0.16 suggesting some import of Re and/or radiogenic 187Os most likely through contamination by continental crust during magma emplacement. The Re-Os age of the Ransko Massif is significantly younger than the previously suggested Lower Cambrian age, but it is similar to and/or younger than the age of metamorphism of the adjacent Kutná Hora crystalline complex and the Moldanubian unit. Therefore, it is likely that the emplacement of the Ransko massif and its Ni-Cu mineralization was closely connected with the late-stage evolution of the Kutná Hora crystalline complex.

Ackerman, Lukáš; Pašava, Jan; Erban, Vojt?ch

2013-10-01

28

5GOLOGIE DE LA FRANCE, N 2, 2012 Le skarn ferrifre de Dilette (Massif armoricain)  

E-print Network

'est développé dans l'auréole de métamorphisme de contact du massif de granodiorite hercynien de Flamanville. L of the Flamanville Hercynian granodioritic massif. The Devonian host-rocks turned into a hornfels series

Paris-Sud XI, Université de

29

Northeast Sustainable Energy Association  

NSDL National Science Digital Library

Northeast Sustainable Energy Association (NSEA), a chapter of the American Solar Energy Society, is an organization for northeastern United States focused on "promoting the understanding, development, and adoption of energy conservation and non-polluting, renewable energy technologies." NSEA promotes the use of electricity produced through sustainable and non-polluting methods, as well as green transportation and building construction and design through advocacy and education. The NSEA Web site offers some useful tools for homeowners and teachers alike. These include Information About Sustainable Transportation, energy conservation tips, and selected articles from the Northeast Sun (published quarterly). Also available are resources and publications for educators; however, some things are not freely available on the Web and must be ordered from the NSEA.

30

Northeast Regional Biomass Program  

SciTech Connect

The management structure and program objectives for the Northeast Regional Biomass Program (NRBP) remain unchanged from previous years. Additional funding was provided by the Bonneville Power Administration Regional Biomass Program to continue the publication of articles in the Biologue. The Western Area Power Administration and the Council of Great Lakes Governors funded the project Characterization of Emissions from Burning Woodwaste''. A grant for the ninth year was received from DOE. The Northeast Regional Biomass Steering Committee selected the following four projects for funding for the next fiscal year. (1) Wood Waste Utilization Conference, (2) Performance Evaluation of Wood Systems in Commercial Facilities, (3) Wood Energy Market Utilization Training, (4) Update of the Facility Directory.

O'Connell, R.A.

1991-11-01

31

Northeast Fi Observers r  

E-print Network

-495-2309, and the after-hour cell phone number is 508-681-9104. When calling, the vessel captain should request a status provi obser On a (ASM OBSE AI AI EW MR Obse to all When safety for a Northeast Fi Observers r te be a rare hould not de rovide guida ip. tocols as fol from the cap pecify am or phone numb r company n

32

Northeast Regional Biomass Program  

SciTech Connect

The Northeast Regional Biomass Program has been in operation for a period of nine years. During this time, state managed programs and technical programs have been conducted covering a wide range of activities primarily aim at the use and applications of wood as a fuel. These activities include: assessments of available biomass resources; surveys to determine what industries, businesses, institutions, and utility companies use wood and wood waste for fuel; and workshops, seminars, and demonstrations to provide technical assistance. In the Northeast, an estimated 6.2 million tons of wood are used in the commercial and industrial sector, where 12.5 million cords are used for residential heating annually. Of this useage, 1504.7 mw of power has been generated from biomass. The use of wood energy products has had substantial employment and income benefits in the region. Although wood and woodwaste have received primary emphasis in the regional program, the use of municipal solid waste has received increased emphasis as an energy source. The energy contribution of biomass will increase as potentia users become more familiar with existing feedstocks, technologies, and applications. The Northeast Regional Biomass Program is designed to support region-specific to overcome near-term barriers to biomass energy use.

Lusk, P.D.

1992-12-01

33

(222)Rn activity concentration differences in groundwaters of three Variscan granitoid massifs in the Sudetes (NE Bohemian Massif, SW Poland).  

PubMed

Based on research conducted in three Variscan granitoid massifs located within the crystalline Bohemian Massif, the authors confirmed that the higher the degree of their erosional dissection, the smaller the concentration of (222)Rn in groundwaters circulating in these massifs. This notion implies that radon waters and high-radon waters, from which at least some of the dissolved radon should be removed before feeding them as drinking water to the water-supply system, could be expected in granitoid massifs which have been poorly exposed by erosion. At the same time, such massifs must be taken into account as the areas of possible occurrence of radon medicinal waters, which in some countries can be used for balneotherapy in health resorts. Slightly eroded granitoid massifs should be also regarded as very probable radon prone areas or areas of high radon potential. PMID:24657989

Przylibski, Tadeusz A; Gorecka, Joanna

2014-08-01

34

2. SOUTHWEST VIEW OF NORTH SIDE (NORTHEAST CORNER).. THE NORTHEAST ...  

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

2. SOUTHWEST VIEW OF NORTH SIDE (NORTHEAST CORNER).. THE NORTHEAST SIDE OF THE MINE OFFICE IS IN THE BACKGROUND. - Juniata Mill Complex, Mill Camp Shed, 22.5 miles Southwest of Hawthorne, between Aurora Crater & Aurora Peak, Hawthorne, Mineral County, NV

35

Finnish Higher Education in Transition: Perspectives on Massification and Globalisation.  

ERIC Educational Resources Information Center

This book discusses recent changes in Finnish higher education, pinpointing the changes and analyzing what they mean. The chapters are: (1) "GeoPolitical and Cultural Coordinates for Finnish History" (Jussi Valimaa); (2) "A Historical Introduction to Finnish Higher Education" (Jussi Valimaa); (3) "Analysing Massification and Globalisation" (Jussi…

Valimaa, Jussi, Ed.

36

Pre-School Education in the Massif Central (France).  

ERIC Educational Resources Information Center

This paper lists and tentatively assesses three experiments in preschool education in rural areas in France, and outlines the Massif Central development program which draws extensively on these experiments. In Experiment I, a peripatetic teacher worked with young children, concentrating on speech activities in four different single-class schools.…

Serna, Emile

37

Massification in Higher Education: Large Classes and Student Learning  

ERIC Educational Resources Information Center

In introducing the special issue on "Large Class Pedagogy: Opportunities and Challenges of Massification" the present editorial takes stock of the emerging literature on this subject. We seek to contribute to the massificaiton debate by considering one result of it: large class teaching in higher education. Here we look to large classes…

Hornsby, David J.; Osman, Ruksana

2014-01-01

38

Fluid circulation systems in the Alpine External Crystalline Massifs  

NASA Astrophysics Data System (ADS)

At mid-crustal levels, rock permeability is believed to be very low except in active fault/shear zones. In sedimentary rocks undergoing tectonic burial during collisional shortening, fluid flow is thus considered to be a small-scale process restricted to the sedimentary unit, until the fluid system locally opens during strain localization in fault/shear zones. During the Alpine collision, the European proximal passive margin (Dauphinois/Helvetic domains, including the External Crystalline Massifs, ECM: Aar, Mont Blanc, Aiguilles Rouges, Oisans massifs) was buried at mid-crustal depth under the internal units and was subsequently shortened and exhumed with contrasting kinematics. Indeed, some of the main tectonic units are sedimentary nappes detached from their basement while other are linked to main basement shear zones. In this context, many studies of fluid system evolution have been published, mainly focused on the largest tectonic units (e.g., Morcles nappe) and/or on thrust/shear zones with large displacement (e.g., Glarus thrust). In this contribution, we focused on tectonic structures located in the Oisans massif where small amount of shortening occurred (smaller than in the northern ECM, Mont Blanc and Aar). We performed geochemical and microthermometric analyses on calcite + quartz vein and host-rock samples to document and discuss the fluid source and pathway, the scale of circulation and the fluid-rock interactions. The fluid system in the Oisans ECM is compared to the fluid systems in other ECM and can be considered as an early and/or less shortened analogue. In the Oisans massif cover, the fluid system is generally closed, except locally above the main basement shear zones where signatures of basement-derived fluids were identified by trace element analysis. In contrast, in the Mont Blanc massif, fluids were channelized in the main basement shear zones, while in the Morcles nappe (i.e., the presumable cover of the Mont Blanc), deep fluids may have been channelized in the sheared reverse limb. Further north, in the Glarus thrust (i.e., the largest shear zone of the Aar massif), deep fluids were clearly channelized in the thrust zone. This highlights the influence on fluid systems of both the structural style and the amount of shortening that vary along the strike of the External Alps.

Boutoux, Alexandre; Bellahsen, Nicolas; Verlaguet, Anne; Lacombe, Olivier

2014-05-01

39

The Apollo 17 samples: The Massifs and landslide  

NASA Technical Reports Server (NTRS)

More than 50 kg of rock and regolith samples, a little less than half the total Apollo 17 sample mass, was collected from the highland stations at Taurus-Littrow. Twice as much material was collected from the North Massif as from the South Massif and its landslide (the apparent disproportionate collecting at the mare sites is mainly a reflection of the large size of a few individual basalt samples). Descriptions of the collection, documentation, and nature of the samples are given. A comprehensive catalog is currently being produced. Many of the samples have been intensely studied over the last 20 years and some of the rocks have become very familiar and depicted in popular works, particularly the dunite clast (72415), the troctolite sample (76535), and the station 6 boulder samples. Most of the boulder samples have been studied in Consortium mode, and many of the rake samples have received a basic petrological/geochemical characterization.

Ryder, Graham

1992-01-01

40

Miocene mass-transport sediments, Troodos Massif, Cyprus  

USGS Publications Warehouse

Sediment mass-transport layers of submarine origin on the northern and southern flanks of the Troodos ophiolitic massif are dated biostratigraphically as early Miocene and late Miocene, respectively and therefore represent different seismogenic events in the uplift and erosional history of the Troodos terrane. Analysis of such events has potential for documenting Miocene seismic and uplift events regionally in the context of changing stress field directions and plate vectors through time. ?? 2009 The Geologists' Association.

Lord, A.R.; Harrison, R.W.; BouDagher-Fadel, M.; Stone, B.D.; Varol, O.

2009-01-01

41

The French Atlantic littoral and the Massif Armoricain, part 3  

NASA Technical Reports Server (NTRS)

The author has identified the following significant results: (1) An original map of lineaments of the Armorican Massif and the Vendean platform was prepared. (2) Validity of spatial information through comparison with maps of various kinds, such as geological, geophysical, morphological, etc., was verified. (3) It was confirmed that LANDSAT images, in many cases, reflect data on deep phenomena which were only accessible geophysically and by means of borings. Tectonic domains were outlined, and known lineaments were extended.

Verger, F. (principal investigator); Scanvic, J. Y.; Monget, J. M.

1977-01-01

42

The deformation of the Egersund–Ogna anorthosite massif, south Norway: finite-element modelling of diapirism  

Microsoft Academic Search

This paper aims at testing the mechanical relevance of the petrological model of anorthosite massif diapiric emplacement. The Egersund–Ogna massif (S. Norway) is of particular interest because recent petrological and geochronological data constrain the initial geometry, emplacement conditions and timing (about 2 m.y.). The formation of this anorthosite massif is in agreement with the classical petrological model, in which accumulation

J. D. Barnichon; H. Havenithb; B. Hofferb; R. Charlier; D. Jongmans; J. C. Duchesne

1999-01-01

43

Zn-kupletskite and hendricksite in the agpaitic phonolites of the Oktyabrskii Massif, Azov region, Ukraine  

Microsoft Academic Search

The Oktyabrskii alkaline massif (Ukrainian Shield, Azov region) has been known since the works of J. Morozevich in the late 19th century. The massif (~40 km 2 in area, age of 1.8 Ga) is made up of predominant alkali syenites and foyaites, with minor amounts of mariupolite, subalkaline gabbro, and their derivatives (peridotites, pyroxenites, olivinites). A few dikes of egirine

V. V. Sharygin; S. G. Krivdik; L. N. Pospelova; A. V. Dubina

2009-01-01

44

Contamination of the Marcy Anorthosite Massif, Adirondack Mountains, NY: petrologic and isotopic evidence  

Microsoft Academic Search

Oxygen isotope analyses of 101 samples from the Marcy Anorthosite Massif (61 from this study, 40 from Taylor 1969), indicate that two major and distinct processes of crustal contamination have affected the massif. Ninety percent of the 93 samples with over 65% plagioclase are enriched in 18O by ~ 2.6 ‰ relative to “normal” anorthosites or gabbros: the average d18O

Jean Morrison; John W. Valley

1988-01-01

45

Social Class Barriers of the Massification of Higher Education in Taiwan  

ERIC Educational Resources Information Center

In recent years, the rapid growth of higher education in Taiwan has led to an essential shift from education for the elite to the massification of higher education. Although this massification is making higher education more accessible, one of the main concerns is whether opportunities for higher education are the same among all social classes in…

Ru-Jer, Wang

2012-01-01

46

Permian exhumation of the Buffalo Pitts orogenic peridotite massif, northern Cordillera, Yukon  

Microsoft Academic Search

We report the results of a geochemical and U-Pb zircon geochronological study aimed at constraining the timing and tectonic setting of the exhumation of an orogenic peridotitic mantle massif in central Yukon within northern Canadian Cordillera. The Buffalo Pitts orogenic massif is inferred to have been exhumed into continental metasedimentary rocks within the pericratonic Yukon-Tanana terrane. Structurally admixed with the

S. T. Johnston; D. Canil; L. H. Heaman

2007-01-01

47

Mohorovicic discontinuity depth analysis beneath North Patagonian Massif  

NASA Astrophysics Data System (ADS)

The North Patagonian Massif is a 100000 km2, sub-rectangular plateau that stands out 500 to 700 m higher in altitude than the surrounding topography. The creation of this plateau took place during the Oligocene through a sudden uplift without noticeable internal deformation. This quite different mechanical response between the massif and the surrounding back arc, the short time in which this process took place and a regional negative Bouguer anomaly in the massif area, raise the question about the isostatic compensation state of the previously mentioned massif. In the present work, a comparison between different results about the depth of the Mohorovicic discontinuity beneath the North Patagonian Massif and a later analysis is made. It has the objective to analyze the crustal thickness in the area to contribute in the determination of the isostatic balance and the better understanding of the Cenozoic evolution of the mentioned area. The comparison is made between four models; two of these were created with seismic information (Feng et al., 2006 and Bassin et al., 2000), another model with gravity information (Barzaghi et al., 2011) and the last one with a combination of both techniques (Tassara y Etchaurren, 2011). The latter was the result of the adaptation to the work area of a three-dimensional density model made with some additional information, mainly seismic, that constrain the surfaces. The work of restriction and adaptation of this model, the later analysis and comparison with the other three models and the combination of both seismic models to cover the lack of resolution in some areas, is presented here. According the different models, the crustal thickness of the study zone would be between 36 and 45 Km. and thicker than the surrounding areas. These results talk us about a crust thicker than normal and that could behave as a rigid and independent block. Moreover, it can be observed that there are noticeable differences between gravimetric and seismic models in the North Patagonian Massif area and in its West boundary but almost any difference in the other geographical limits. It is an interesting result and could be related with the isostatic compensation state of the area. References: Barzaghi R., Borghi A., Reguzzoni M., Sampietro D. Global Moho Estimate from GOCE Space-Wise Solution and a Local Application in the Mediterranean Area Bassin, C., Laske, G. and Masters, G., The Current Limits of Resolution for Surface Wave Tomography in North America, EOS Trans AGU, 81, F897, 2000. Feng M., Van der Lee S., Assumpçao M.. Upper mantle structure of South America from joint inersion of waveforms and fundamental mode group velocities of Rayleigh waves. Journal of Goephysical Research, vol. 112, B04312, doi:10.1029/2006JB004449,2007 Tassara A., A. Echaurren, 2011. Anatomy of the Chilean Subduction Zone: Three-dimensional density model upgraded and compared against global-scale models. Geophysical journal international, doi: 10.1111/j.1365-246X.2012.05397.x

Gómez Dacal, M. L.; Tocho, C.; Aragón, E.

2013-05-01

48

Geodynamics map of northeast Asia  

USGS Publications Warehouse

This map portrays the geodynamics of Northeast Asia at a scale of 1:5,000,000 using the concepts of plate tectonics and analysis of terranes and overlap assemblages. The map is the result of a detailed compilation and synthesis at 5 million scale and is part of a major international collaborative study of the mineral resources, metallogenesis, and tectonics of northeast Asia conducted from 1997 through 2002 by geologists from earth science agencies and universities in Russia, Mongolia, northeastern China, South Korea, Japan, and the USA.

Parfenov, Leonid M., (compiler); Khanchuk, Alexander I.; Badarch, Gombosuren; Miller, Robert J.; Naumova, Vera V.; Nokleberg, Warren J.; Ogasawara, Masatsugu; Prokopiev, Andrei V.; Yan, Hongquan

2013-01-01

49

Northeast Association for Clinical Microbiology  

E-print Network

Northeast Association for Clinical Microbiology and Infectious Disease 28th Annual Meeting May 21 School Boston, MA Katharine Bossart, PhD Lawrence Madoff, MD Assistant Professor of Microbiology Director, Microbiology and Infectious Diseases Medical Director, Clinical Microbiology and Molecular Molecular

Mekalanos, John

50

Structural investigations in the Massif-Central, France  

NASA Technical Reports Server (NTRS)

This survey covered the French Massif-Central (where crystalline and volcanic rocks outcrop) and its surrounding sedimentaries, Bassin de Paris, Bassin d'Aquitaine and Rhodanian valley. One objective was the mapping of fracturing and the surveying of its relationship with known ore deposits. During this survey it was found that ERTS imagery outlines lithology in some sedimentary basins. On the other hand, in a basement area, under temperature climate conditions, lithology is rarely expressed. These observations can be related to the fact that band 5 gives excellent results above sedimentary basins in France and generally band 7 is the most useful in a basement area. Several examples show clearly the value of ERTS imagery for mapping linear features and circular structures. All the main fractures are identified with the exception of new ones found both in sedimentaries and basement areas. Other interesting findings concern sun elevation which, stereoscopic effect not being possible, simulates relief in a better way under certain conditions.

Scanvic, J. Y.

1974-01-01

51

Les granites du Massif Central Français: étude comparée des leucogranites et granodiorites  

Microsoft Academic Search

Chemical and mineralogical compositions of granitic rocks of the French Massif Central enable us to classify them into two distinct groups: (i) leucogranites, (ii) granodiorites or quartz-monzonites, separated by a natural gap.

J. Didier; J. Lameyre

1969-01-01

52

Petrology and geochemistry of pyroxenites in the Lanzo ultramafic massif, Northwestern Italy  

E-print Network

Combined field, microtextural, and geochemical observations are presented for pyroxenites in the Lanzo ultramafic massif in order to place chemical and petrological constraints both locally on the geologic history of the ...

Pesce, Kathryn A

2012-01-01

53

The lattice preferred orientation of olivine in Beni Bousera Ultramafic Massif, Morocco  

E-print Network

The roll of melt in deformation of the mantle is important for understanding mantle processes and evolution. The Beni Bousera Ultramafic Massif, northern Morocco, shows petrologic evidence that melt was an important part ...

Stanley, Jessica R

2009-01-01

54

Petrogenesis of massif anorthosites: a perspective from St. Urbain, Quebec  

SciTech Connect

The St. Urbain massif is a post-orogenic anorthosite pluton (approx. 500 km/sup 2/) emplaced within the central high-grade granulite terrain of the Grenville structural province. In contrast to other Grenville anorthosites, primary magmatic features are largely preserved. The massif consists predominantly of andesine anorthosite (AA) of remarkable purity containing abundant plagioclase megacrysts. AA has high K/sub 2/O (approx. 2 wgt.%), very high Sr contents (approx. 1200 ppm) and highly fractionated, low REE contents. Features of AA provide the following insights into anorthosite origins: (1) Crystallization from anorthositic magmas, as evidenced by early crystallization of abundant antiperthitic plag, and igneous emplacement of AA dikes and veins into older, unrelated labradorite anorthosite; (2) in situ crystallization of pyroxene after plag, with no direct evidence of earlier crystallization of mafic minerals from a basaltic parent magma; (3) limited differentiation during crystallization, indicated by small variation in plag and opx and limited variations in plag Sr and REE contents; (4) the involvement of water, suggested by the late igneous crystallization of biotite and the localized grain-boundary replacement of plag by calcic myrmekite (An/sub 80/ + qtz). (5) high temperature, relatively oxidizing conditions, indicated by magmatic hemoilmenite +/- rutile and rare ferropseudobrookite in AA and associated ores. AA crystallized from highly feldspathic, relatively oxidized, somewhat hydrous parent magma with little trapped melt. The development of a hyperfeldspathic parent magma with the requisite geochemical features can be ascribed to hydrous partial melting of mafic (to intermediate) rocks at deep crustal or greater depths, leaving a garnetiferous residue.

Gromet, L.P.; Dymek, R.F.

1985-01-01

55

The Northeast Climate Science Center  

NASA Astrophysics Data System (ADS)

The Department of Interior Northeast Climate Science Center (NE CSC) is part of a federal network of eight Climate Science Centers created to provide scientific information, tools, and techniques that managers and other parties interested in land, water, wildlife and cultural resources can use to anticipate, monitor, and adapt to climate change. Recognizing the critical threats, unique climate challenges, and expansive and diverse nature of the northeast region, the University of Massachusetts Amherst, College of Menominee Nation, Columbia University, Marine Biological Laboratory, University of Minnesota, University of Missouri Columbia, and University of Wisconsin-Madison have formed a consortium to host the NE CSC. This partnership with the U.S. Geological Survey climate science center network provides wide-reaching expertise, resources, and established professional collaborations in both climate science and natural and cultural resources management. This interdisciplinary approach is needed for successfully meeting the regional needs for climate impact assessment, adaptive management, education, and stakeholder outreach throughout the northeast region. Thus, the NE CSC conducts research, both through its general funds and its annual competitive award process, that responds to the needs of natural resource management partners that exist, in part or whole, within the NE CSC bounds. This domain includes the North Atlantic, Upper Midwest and Great Lakes, Eastern Tallgrass and Big Rivers, and Appalachian Landscape Conservation Cooperatives (LCCs), among other management stakeholders. For example, researchers are developing techniques to monitor tree range dynamics as affected by natural disturbances which can enable adaptation of projected climate impacts; conducting a Designing Sustainable Landscapes project to assess the capability of current and potential future landscapes in the Northeast to provide integral ecosystems and suitable habitat for a suite of representative species and provide guidance for strategic habitat conservation; studying the effects of changes in the frequency and magnitude of drought and stream temperature on brook trout habitats, spatial distribution and population persistence; and conducting assessments of northeastern regional climate projections and high-resolution downscaling.

Ratnaswamy, M. J.; Palmer, R. N.; Morelli, T.; Staudinger, M.; Holland, A. R.

2013-12-01

56

Northeast regional biomass energy program  

Microsoft Academic Search

The management structure and program objectives for the Northeast Regional Biomass Program remain unchanged from previous years. The funding for this year however has been considerably reduced permitting the issuance of grants to states to be held to $15,000\\/state. To alleviate this condition, $120,000 of unobligated state grant funds has been transferred to the technical subcontract area. Technical projects have

OConnell

1990-01-01

57

SRTM-based morphotectonic analysis of the Poços de Caldas Alkaline Massif, southeastern Brazil  

Microsoft Academic Search

An evaluation of SRTM 03? data applicability in geomorphology and morphotectonic analysis is proposed, considering the morphometric parameters slope, aspect, surface roughness and isobase surface. The study area, in southeastern Brazil, comprises the Poços de Caldas Alkaline Massif, a 33km-diameter Late Cretaceous collapsed volcanic caldera. Morphometric indices evaluated showed the correlation of landscape within the massif with NE–SW and NW–SE

Carlos Henrique Grohmann; Claudio Riccomini; Fernando Machado Alves

2007-01-01

58

Late Precambrian volcanoplutonic association of the Aktau-Dzhungar massif, Central Kazakhstan: Structural position and age  

Microsoft Academic Search

The structural plan of the Caledonides in the western part of Central Kazakhstan and the Northern Tien Shan is mainly determined by sialic massifs with a Precambrian continental crust (Kokchetav, Ishkeol’mes, Erementau?Niyaz, Ulutau, Aktau-Dzhungar, Chuisk? Kendyk Tass, Karatau, Issyk-Kul, and others), which are framed by Lower Paleozoic volcanogenic, siliceous, and flysch complexes. The massif consists of a Lower Proterozoic?Riphean basement

K. E. Degtyarev; K. N. Shatagin; A. B. Kotov; E. B. Sal’nikova; M. V. Luchitskaya; A. A. Tret’yakov; S. Z. Yakovleva

2008-01-01

59

Preliminary northeast Asia geodynamics map  

USGS Publications Warehouse

This map portrays the geodynamics of Northeast Asia at a scale of 1:5,000,000 using the concepts of plate tectonics and analysis of terranes and overlap assemblages. The map is the result of a detailed compilation and synthesis at 5 million scale and is part of a major international collaborative study of the Mineral Resources, Metallogenesis, and Tectonics of Northeast Asia conducted from 1997 through 2002 by geologists from earth science agencies and universities in Russia, Mongolia, Northeastern China, South Korea, Japan, and the USA. This map is the result of extensive geologic mapping and associated tectonic studies in Northeast Asia in the last few decades and is the first collaborative compilation of the geology of the region at a scale of 1:5,000,000 by geologists from Russia, Mongolia, Northeastern China, South Korea, Japan, and the USA. The map was compiled by a large group of international geologists using the below concepts and definitions during collaborative workshops over a six-year period. The map is a major new compilation and re-interpretation of pre-existing geologic maps of the region. The map is designed to be used for several purposes, including regional tectonic analyses, mineral resource and metallogenic analysis, petroleum resource analysis, neotectonic analysis, and analysis of seismic hazards and volcanic hazards. The map consists of two sheets. Sheet 1 displays the map at a scale of 1:5,000,000, explanation. Sheet 2 displays the introduction, list of map units, and source references. Detailed descriptions of map units and stratigraphic columns are being published separately. This map is one of a series of publications on the mineral resources, metallogenesis, and geodynamics,of Northeast Asia. Companion studies and other articles and maps , and various detailed reports are: (1) a compilation of major mineral deposit models (Rodionov and Nokleberg, 2000; Rodionov and others, 2000; Obolenskiy and others, in press a); (2) a series of metallogenic belt maps (Obolenskiy and others, 2001; in press b); (3) a lode mineral deposits and placer districts location map for Northeast Asia (Ariunbileg and others, in press b); (4) descriptions of metallogenic belts (Rodionov and others, in press); and (5) a database on significant metalliferous and selected nonmetalliferous lode deposits, and selected placer districts (Ariunbileg and others, in press a).

Parfenov, Leonid M., (compiler); Khanchuk, Alexander I.; Badarch, Gombosuren; Miller, Robert J.; Naumova, Vera V.; Nokleberg, Warren J.; Ogasawara, Masatsugu; Prokopiev, Andrei V.; Yan, Hongquan

2003-01-01

60

P-T-t evolution of eclogite/blueschist facies metamorphism in Alanya Massif: time and space relations with HP event in Bitlis Massif, Turkey  

NASA Astrophysics Data System (ADS)

The Alanya Massif, which is located to the south of central Taurides in Turkey, presents a typical nappe pile consisting of thrust sheets with contrasting metamorphic histories. In two thrust sheets, Sugözü and Gündo?mu? nappes, HP metamorphism under eclogite (550-567 °C/14-18 kbar) and blueschist facies (435-480 °C/11-13 kbar) conditions have been recognized, respectively. Whereas the rest of the Massif underwent MP metamorphism under greenschist to amphibolite facies (525-555 °C/6.5-7.5 kbar) conditions. Eclogite facies metamorphism in Sugözü nappe, which consists of homogeneous garnet-glaucophane-phengite schists with eclogite lenses is dated at 84.8 ± 0.8, 84.7 ± 1.5 and 82 ± 3 Ma (Santonian-Campanian) by 40Ar/39Ar phengite, U/Pb zircon and rutile dating methods, respectively. Similarly, phengites in Gündo?mu? nappe representing an accretionary complex yield 82-80 Ma (Campanian) ages for blueschist facies metamorphism. During the exhumation, the retrograde overprint of the HP units under greenschist-amphibolite facies conditions and tectonic juxtaposition with the Barrovian units occurred during Campanian (75-78 Ma). Petrological and geochronological data clearly indicate a similar Late Cretaceous tectonometamorphic evolution for both Alanya (84-75 Ma) and Bitlis (84-72 Ma) Massifs. They form part of a single continental sliver (Alanya-Bitlis microcontinent), which was rifted from the southern part of the Anatolide-Tauride platform. The P-T-t coherence between two Massifs suggests that both Massifs have been derived from the closure of the same ocean (Alanya-Bitlis Ocean) located to the south of the Anatolide-Tauride block by a northward subduction. The boundary separating the autochthonous Tauride platform to the north from both the Alanya and Bitlis Massifs to the south represents a suture zone, the Pamphylian-Alanya-Bitlis suture.

Çetinkaplan, Mete; Pourteau, Amaury; Candan, Osman; Koralay, O. Ersin; Oberhänsli, Roland; Okay, Aral I.; Chen, Fukun; Kozlu, Hüseyin; ?engün, F?rat

2014-12-01

61

Magnetic anomalies northeast of Shatsky Plateau  

E-print Network

MAGNETIC ANOMALIES NORTHEAST OF SHATSKY PLATEAU A Thesis by DAVID LAWRENCE RISCH Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE May 1982 Major Subject...: Oceanography MAGNETIC ANOMALIES NORTHEAST OF SHATSKY PLATEAU A Thesis by DAVID LAWRENCE RISCH Approved as to style and content by: C rman Committee Member Member Head of Department May 198Z ABSTRACT Magnetic Anomalies Northeast of Shatsky Plateau...

Risch, David Lawrence

1982-01-01

62

Geology and Tectonic Evolution of the Kazda? Massif (NW Anatolia)  

NASA Astrophysics Data System (ADS)

In the northwestern part of Anatolia along the Izmir-Ankara Suture Zone, the Kazda? and Uluda? metamorphic massifs form an E-W trending belt between the Sakarya Continent in the north and the Menderes Massif in the south. Internal succession of these two massifs have been described as metamorphic complexes consisting of various kinds of micaschists, quartz mica schist, gneisses, amphibolites and marbles. In the Kazda? metamorphics, metaophiolites have been described additionally (Okay et al., 1991; Yalt?rak and Okay, 1994; Okay et al., 1996; Duru et al., 2004). These metamorphic complexes were considered to form the basement of the Sakarya Continent tectonically overlain by the Early Permian (Topuz et al., 2004) to Late Triassic (Okay and Monie, 1997; Okay et al., 2002) Karakaya Complex. This old basement and the Karakaya Complex were suggested to be unconformably overlain by Liassic and younger platform limestones and detritals (Alt?ner et al., 1991). In the literature, it has also been suggested that the Kazda? Massif had experienced polyphase metamorphism, first during Carboniferous time, second during Early Triassic and third during Tertiary (Bingöl, 1971; Okay et al., 1996; Okay and Sat?r, 2000). In this study we mapped the Kazda? Massif on 1/25000 scale, studied its internal stratigraphy and structures and performed some petrologic analyses and radiogenic age determinations. Stratigraphically in the lower part of the Kazda? metamorphic sequence, there is a part of an oceanic crust represented by metaultramafic rocks and gabbroic metacumulates. Geochemistry of these banded metagabbros show a mid-oceanic affinity. This oceanic crust is overlain, along an unconformity, by a platform type marble succession. At the base of the marbles, there is a basal conglomerate, clasts of which derived from the underlying ultramafic sequence. Thick white marble sequence is overlain along a gradational boundary with a metadetrital succession consisting of quartz mica schist and mica schists that are partly converted into migmatites. There are mafic metavolcanic intervals along the lower gradational zone and within various levels of the metadetrital unit and some marble lenses. The platform sequence resembles to the Mesozoic platform of the Sakarya continent and the underlying oceanic crust might be a part of a Paleotethys Ocean. The Kazda? succession had been subjected to high-grade migmatitic metamorphism accompanied by syntectonic granite emplacements. Zircons of these metagranites yielded U-Pb ages of 27.6 ± 6.8 Ma and 207Pb/206 Pb evaporation ages of 30 Ma. The metadetrital sequences and migmatites show scattered 207Pb/206 Pb zircon evaporation ages ranging from 301.4 ± 2.8 Ma, 274.9 ± 3.1 Ma, 169.3 ± 3.5 Ma indicating mixed ages with strong Alpine imprints. After metamorphism the Kazda? metamorphic sequence was internally imbricated by southward compression and the ultramafic sequence thrust on the top of the platform sequence. During this southward thrusting two different nappes emplaced successively on top of the Kazda? metamorphics from the north. The first nappe consists of a part of Karakaya Complex and the second one, at the top, consists of the Çetmi Melange. Our mapping results clearly show that all these nappe packages including the internally imbricated Kazda? metamorphics are cut by undeformed young granites of 18-24 Ma age (Okay and Sat?r, 2000). Exhumation of the Kazda? metamorphics was a result of the southerly imbrication which occurred after the emplacement of the syntectonic metagranites (29-30 Ma) and before the intrusion of the cross cutting young granites (~ 21 Ma) The present topographic relief of the mountain was the result of younger vertical movements dissipated among numerous E-W trending high angle normal faults observed on its southern slope facing to Edremit Bay. References Altiner , D., Koçyi?it, A., Farinacci, A., Nicosia, U. and Conti, M.A. (1991) Jurassic-Lower Cretaceous stratigraphy and paleogeographic evolution of the southern part of the northwestern Anatolia. Geologica

Erdo?an, B.; Akay, E.; Hasözbek, A.; Sat?r, M.; Siebel, W.

2009-04-01

63

Pyroxenites - Melting or Migration?: Evidence from the Balmuccia massif  

NASA Astrophysics Data System (ADS)

The recognition of pyroxenites in the mantle, combined with their lower solidus temperatures than peridotite, have been proposed as contributors to melting (Pertermann and Hirschmann, 2003; Sobolev et al, 2005; 2007). Geochemical fingerprints of this process invoke an unspecified 'pyroxenite' as the putative source. In reality, mantle pyroxenites are diverse (Downes, 2007), requiring that their mode of origin and compositional variability be addressed. Due to the excellent preservation and exposure of the Balmuccia massif, it has become an archetype for orogenic peridotites, providing information on their composition, field relationships and metamorphic history (Shervais and Mukasa, 1991; Hartmann and Wedepohl, 1993; Rivalenti et al., 1995; Mazzucchelli et al., 2009). The Balmuccia massif consists of fertile lherzolite with subordinate harzburgite and dunite and is riddled with pyroxenite bands, which fall into two suites - Chrome-Diopside (Cr-Di) and Aluminous-Augite (Al-Aug), a pairing present in most massif peridotites. Two-pyroxene thermometry gives temperatures of 850±25°C at 1-1.5 GPa, 500°C lower than asthenospheric mantle at that pressure, meaning they do not preserve their original, high temperature mineralogy. Decimetre-sized Cr-Di bands (?75% CPX, 25% OPX) occur as initially Ol-free and bound by refractory dunite, but, as the bands are rotated into the plane of foliation, they mechanically incorporate olivine. Al-Aug veins (60% CPX, 25% OPX, 15% Sp) discordantly cut the body, intruding lherzolites which show enrichments in Fe, Al and Ti adjacent to the dykes. Both the Cr-Di suite and the Al-Aug series have indistinguishable Sr-, Nd-isotopic compositions to the host peridotite (Mukasa and Shervais, 1999). The major element compositions of pyroxenes in the Cr-Di bands and those in the surrounding peridotites are identical. Together with isotopic evidence, this suggests a local source, not only chemically but spatially, where a very low degree melt (?2%) acts as a transport medium for the pyroxenes and segregates them into dyke-like structures (melt/rock = 0.05-0.1), analogous to 'pressure-solution' creep (Dick and Sinton, 1979). The presence of a melt is required by their REE contents, with moderate La/SmN (0.3 - 0.4) with near-flat HREE (1 < Gd/YbN < 1.1), in contrast to the lherzolites, which preserve highly fractionated La/SmN (0.03 - 0.3) and positively-sloping HREE (0.6 < Gd/YbN < 0.8). Models for their formation as cumulates from a melt are untenable, as, upon decompression, olivine is invariably the first phase to crystallise, thereby drastically reducing Mg# and Cr# to values lower than those in the Cr-Di bands. The Al-Aug veins have lower Mg# (85-87) than the peridotites and Cr-Di series (?90). However, CPXs in both the Al-Aug and the lherzolite preserve REE patterns which are subparallel to, but twice as enriched as those in the normal lherzolites. This characteristic can be explained by focusing of a small, (4%) locally-sourced melt similar to that which transported the Cr-Di pyroxenes. This melt was focused to a melt/rock ratio of 0.6 - 0.7, and crystallised to form the cumulus rocks of the Al-Augite suite. The extreme, heavy ?57Fe values observed in both the pyroxenite and adjacent lherzolite (+ 0.75 per mille) also point to a low-degree melt.

Sossi, Paolo; O'Neill, Hugh

2014-05-01

64

Low pressure granulites from the Bohemian Massif, Upper Austria  

NASA Astrophysics Data System (ADS)

Low pressure granulite facies rocks are commonly found in the Bohemian Massif in Upper Austria. They belong to the Moldanubian Unit and were metamorphosed during the last stage of the Variscan orogeny. The investigated granulites from the Donau valley (west of Linz), Lichtenberg (northwest of Linz), Sauwald (south of the river Danube) and Bad Leonfelden zone comprise mainly migmatic paragneisses. Most of these rocks underwent high degrees of melting forming meta- and diatexites (''Perlgneise)''. Al-rich metapelites with partly cm-sized garnet porphyroblasts, which are suitable for precise PT and PT-path determinations, can be found in some localities of this unit. In this study samples taken along the Danube valley between Linz and Wilhering, from Lichtenberg and from Bad Leonfelden (north of Linz) were sampled and investigated petrographically in detail. Since garnets are rare and usually consumed by cordierite, a sample with large garnets was investigated in detail. A chemical zoning profile across the c. 1cm large garnet displayed elevated Ca contents (Xgrs=0.06) in the central part which decreased discontinuously towards the rim to Xgrs=0.02. Almandine, pyrope and spessartine components do not show any pronounced zoning pattern. Most of the smaller garnet grains in other samples are also homogeneous in composition with a slight Xalm increase and Xprp decrease at the rims, typical for retrograde diffusional zoning. The cordierite-garnet-sillimanite-granulites as well as some mafic granulites were used for geothermobarometry. Metamorphic conditions of around 770°C to 850°C and 0.5-0.6 GPa could be obtained, which are similar to the values obtained by Tropper et al. (2006). P. Tropper I. Deibl F. Finger R. Kaindl (2006). P-T-t evolution of spinel-cordierite-garnet gneisses from the Sauwald Zone (Southern Bohemian Massif, Upper Austria): is there evidence for two independent late-Variscan low-P / high-T events in the Moldanubian Unit? Int J Earth Sci (Geol Rundsch) (2006) 95: 1019-1037.

Sorger, Dominik; Daghighi, Donia; Simic, Katica; Pichler, Ruth; Schwaiger, Christian; Hauzenberger, Christoph; Linner, Manfred; Iglseder, Christoph

2014-05-01

65

Reanalysis of Geophysical Data With IODP Constraints at Atlantis Massif  

NASA Astrophysics Data System (ADS)

The recovery of a dominantly gabbroic sequence during IODP Expeditions 304/305 at the oceanic core complex on the Mid Atlantic Ridge 30ðN (Atlantis Massif, AM) motivated re-analysis of pre-existing geophysical data together with new borehole logging data. Re-assessment of prior interpretations of the domal high of AM as an ultramafic, flexurally uplifted footwall was warranted. Residual gravity anomalies corrected for seafloor topography and lithospheric temperature structure can be accounted for by a 3D gabbroic core, consisting of the central dome and southern ridge of AM, and a basaltic hanging wall. Mantle Bouguer anomalies are best fit by a model where the core terminates in the north at ~30ð15'N where the corrugated detachment surface ends and a series of steep normal faults characterizes the median valley wall to the north. Prior OBS refraction analyses implied the existence of a 7.5 km/s layer (appropriate for fresh peridotite) at 600 m sub-seafloor and some along- strike variability in the shallower, lower velocity layers. This was consistent with known outcrops of serpentinized harzburgite on the southern ridge. A new analysis of the OBS data suggests somewhat greater along-strike variability in layer thicknesses but with velocities in the 500 m deep section constrained by the ray tracing generally less than 6 km/s, a mafic rather than ultra-mafic rock. This model is similar to a prior best-fit model of data along another NOBEL refraction profile to the east on the dome. Unfortunately, the shot spacing and short (2 km) NOBEL line length do not allow discrimination between the various refraction models. Analysis of refracted arrivals recorded on the MCS streamer using a new method (see Harding et al., Session S12, Fall AGU07) will provide the basis of an inversion for the shallow velocity structure of the central dome near IODP Hole U1309D. This tomographic model will be reported and, together with drilling results, the implications in terms of variability within the core of Atlantis massif will be discussed.

Blackman, D. K.; Collins, J. A.; Searle, R. C.; Karner, G. D.

2007-12-01

66

Senior Design Competition at Northeast Bioengineering Conference We are pleased to announce that the 37th Annual Northeast Bioengineering Conference  

E-print Network

Senior Design Competition at Northeast Bioengineering Conference We are pleased to announce that the 37th Annual Northeast Bioengineering Conference will have a senior design competition. Stan Reisman, Program Chair 37th Northeast Bioengineering Conference #12;

Lotko, William

67

Cruise Report PIRATA Northeast Extension 2010 &  

E-print Network

Cruise Report PIRATA Northeast Extension 2010 & AEROSE VI NOAA Ship Ronald H. Brown RB1003 April PIRATA Northeast Extension Cruise RB-10-03 was designed to: (1) collect a suite of oceanographic, if necessary a full recovery and redeployment) for the PIRATA mooring at 0ºN, 23ºW. The cruise track focuses

68

Cruise Report PIRATA Northeast Extension 2013b &  

E-print Network

Cruise Report PIRATA Northeast Extension 2013b & AEROSE IX NOAA Ship Ronald H. Brown RB-13 Expedition (AEROSE) cruise RB-13-06 was designed to (1) Collect oceanographic and meteorological observations the cruise. This work is in support of the PIRATA Northeast Extension project and is part of a collaborative

69

PIRATA Northeast Extension 2009 / AEROSE Cruise Report  

E-print Network

PIRATA Northeast Extension 2009 / AEROSE Cruise Report NOAA Ship Ronald H. Brown RB-09-04 11 July Northeast Extension Cruise RB-09-04 was designed to collect a suite of oceanographic and meteorological. Puerto Rico); Mariana Guereque (Univ. Texas El Paso) Note: this preliminary cruise report addresses only

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Northeast Texas Workplace Partnership Implementation Program.  

ERIC Educational Resources Information Center

The Northeast Texas Workplace Partnership Program developed curriculum and training materials based on the literacy requirements of the workplace for two different industries in northeast Texas--Lone Star Steel Company and Pilgrim's Pride Industries. Three advisory committees were established to involve the community, education, and business and…

Northeast Texas Community Coll., Mount Pleasant.

71

Tephrochronology of the Mont-Dore volcanic Massif (Massif Central, France): new 40Ar/39Ar constraints on the Late Pliocene and Early Pleistocene activity  

NASA Astrophysics Data System (ADS)

The Mont-Dore Massif (500 km2), the youngest stratovolcano of the French Massif Central, consists of two volcanic edifices: the Guéry and the Sancy. To improve our knowledge of the oldest explosive stages of the Mont-Dore Massif, we studied 40Ar/39Ar-dated (through single-grain laser and step-heating experiments) 11 pyroclastic units from the Guéry stratovolcano. We demonstrate that the explosive history of the Guéry can be divided into four cycles of explosive eruption activity between 3.09 and 1.46 Ma (G.I to G.IV). We have also ascertained that deposits associated with the 3.1-3.0-Ma rhyolitic activity, which includes the 5-km3 "Grande Nappe" ignimbrite, are not recorded in the central part of the Mont-Dore Massif. All the pyroclastites found in the left bank of the Dordogne River belong to a later explosive phase (2.86-2.58 Ma, G.II) and were channelled down into valleys or topographic lows where they are currently nested. This later activity also gave rise to most of the volcanic products in the Perrier Plateau (30 km east of the Mont-Dore Massif); three quarters of the volcano-sedimentary sequence (up to 100 m thick) was emplaced within less than 20 ky, associated with several flank collapses in the northeastern part of the Guéry. The age of the "Fournet flora" (2.69 ± 0.01 Ma) found within an ash bed belonging to G.II suggests that temperate forests already existed in the French Massif Central before the Pliocene/Pleistocene boundary. The Guéry's third explosive eruption activity cycle (G.III) lasted between 2.36 and 1.91 Ma. It encompassed the Guéry Lake and Morangie pumice and ash deposits, as well as seven other important events recorded as centimetric ash beds some 60 to 100 km southeast of the Massif in the Velay region. We propose a general tephrochronology for the Mont-Dore stratovolcano covering the last 3.1 My. This chronology is based on 44 40Ar/39Ar-dated events belonging to eight explosive eruption cycles each lasting between 100 and 200 ky. The occurrence of only one pumice deposit in the 800-ky period between 1.9 and 1.1 Ma suggests that volcanic explosive activity was strongly reduced or quiescent.

Nomade, Sébastien; Pastre, Jean-François; Nehlig, Pierre; Guillou, Hervé; Scao, Vincent; Scaillet, Stéphane

2014-03-01

72

Geochemical properties of the Beni Bousera (N. Morocco) peridotites : a field and laboratory approach to understanding melt infiltration and extraction in an orogenic peridotite massif  

E-print Network

The Beni Bousera ultramafic massif is a tectonically emplaced body of upper mantle material that is exposed over 72 km2 in the Betic-Rif-Tell orogenic belt of northern Morocco. The massif is composed primarily of spinel ...

Manthei, Christian D. (Christian David)

2012-01-01

73

A Library Response to the Massification of Higher Education: The Case of the University of Zambia Library  

ERIC Educational Resources Information Center

This paper looks at the challenges that libraries in Africa face in responding to massification of higher education by discussing the University of Zambia library's response in library and information resources provision. As a result of massification of higher education, libraries have been forced not only to employ new and different strategies to…

Kanyengo, Christine Wamunyima

2009-01-01

74

GEOLOGY | February 2013 | www.gsapubs.org 111 The Stak massif, northern Pakistan, is a newly recognized occur-  

E-print Network

GEOLOGY | February 2013 | www.gsapubs.org 111 ABSTRACT The Stak massif, northern Pakistan in northern Pakistan (Fig. 1) is a retro- gressed eclogitic massif, but the pervasive retrogression made northwest of Skardu, Pakistan (Fig. 1). High-pressure rocks are exposed on the northern edge of the Indian

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A magnetic fabric study of the AigoualSaint GuiralLiron granite pluton (French Massif Central) and relationships  

E-print Network

A magnetic fabric study of the Aigoual­Saint Guiral­Liron granite pluton (French Massif Central been carried out to determine the granite fabric. Biotite, local hornblende, and small grains tectonics on the linear fabric development. The dome shaped foliation pattern of the Saint Guiral massif

Paris-Sud XI, Université de

76

Northeast Regional Planetary Data Center  

NASA Technical Reports Server (NTRS)

In 1980, the Northeast Planetary Data Center (NEPDC) was established with Tim Mutch as its Director. The Center was originally located in the Sciences Library due to space limitations but moved to the Lincoln Field Building in 1983 where it could serve the Planetary Group and outside visitors more effectively. In 1984 Dr. Peter Schultz moved to Brown University and became its Director after serving in a similar capacity at the Lunar and Planetary Institute since 1976. Debbie Glavin has served as the Data Center Coordinator since 1982. Initially the NEPDC was build around Tim Mutch's research collection of Lunar Orbiter and Mariner 9 images with only partial sets of Apollo and Viking materials. Its collection was broadened and deepened as the Director (PHS) searched for materials to fill in gaps. Two important acquisitions included the transfer of a Viking collection from a previous PI in Tucson and the donation of surplused lunar materials (Apollo) from the USGS/Menlo Park prior to its building being torn down. Later additions included the pipeline of distributed materials such as the Viking photomosaic series and certain Magellan products. Not all materials sent to Brown, however, found their way to the Data Center, e.g., Voyager prints and negatives. In addition to the NEPDC, the planetary research collection is separately maintained in conjunction with past and ongoing mission activities. These materials (e.g., Viking, Magellan, Galileo, MGS mission products) are housed elsewhere and maintained independently from the NEPDC. They are unavailable to other researchers, educators, and general public. Consequently, the NEPDC represents the only generally accessible reference collection for use by researchers, students, faculty, educators, and general public in the Northeast corridor.

Schultz, Peter H.; Saunders, Stephen (Technical Monitor)

2005-01-01

77

A Probabilistic Seismic Hazard Analysis of Northeast India  

E-print Network

A Probabilistic Seismic Hazard Analysis of Northeast India Sandip Das,a... Ishwer D. Gupta,b... and Vinay K. Guptaa... Seismic hazard maps have been prepared for Northeast India based on the uniform in Northeast India. In the present study, the entire area of Northeast India has been divided into 0.1° grid

Gupta, Vinay Kumar

78

Origin and tectonic significance of the Huangling massif within the Yangtze craton, South China  

NASA Astrophysics Data System (ADS)

As the oldest exposed basement and the typical sedimentary cover of the Yangtze craton, the Huangling massif is a suitable place to decipher the tectonics of South China block. Structural analysis shows that the Huangling massif has an elliptic domal shape with N-S striking long axis, an asymmetric antiform with a steep western flank and a gentle eastern flank. There, three litho-tectonic units are recognized, from inner to outer parts: (1) Archean-Paleoproterozoic metamorphic rocks intruded by Neoproterozoic granitoids; (2) Neoproterozoic to Jurassic sedimentary envelope around the dome core; (3) Cretaceous terrigeneous alluvial-fluvial deposits, unconformably overlying the dome flanks. Coeval with the uplifting of the massif, the pre-Cretaceous strata on the western and eastern flanks of the Huangling massif were involved in a series of folds with nearly N-S axes and layer-parallel slip structures with top-to-the-W and top-to-the-E motion, respectively. The subsequent brittle normal faulting controlled the deposition of the graben or half-graben basins on both flanks. Cooling history reveals that the Huangling massif underwent uplifting between 160 Ma and 110 Ma with an average cooling rate of 2-3 °C/Ma. Moreover, the Huangling area was not significantly affected by the Early Paleozoic and Triassic orogenies of South China. Comparable with the contemporaneous extensional structures, such as metamorphic core complexs, syntectonic plutons bounded by ductile normal faults, and rift-related basins in eastern China, it is proposed that the Huangling massif, might be an extensional structure controlled by a weak crustal extension. In this case, it will represent the western front of the Late Mesozoic lithospheric thinning in entire eastern China. However the compressional model cannot be ruled out.

Ji, Wenbin; Lin, Wei; Faure, Michel; Chu, Yang; Wu, Lin; Wang, Fei; Wang, Jun; Wang, Qingchen

2014-06-01

79

Metamorphic Evolution In The Northern Kontum Massif, Central Vietnam  

NASA Astrophysics Data System (ADS)

Relict kyanite-bering rocks were found from the sillimanite zone of Kham Duc formation in the northern Kontum massif, central Vietnam. Kyanites occur as partially replaced by muscovite, margarite and quartz in garnet-muscovite (Grt-Mus) schist and included or surrounded by plagioclase in garnet-biotite-sillimanite (Grt-Bt-Sil) gneisses. Three metamorphic stages (M1-M3) are distinguished based on mineral paragenesis and compositions of these rocks. M1 stage is characterized by the presence of kyanite, high grossular (Xgrs = 0.21) and low pyrope (Xprp = 0.04) garnet and low anorthite content (Xan = 0.02-0.04) plagioclase. M2 stage is characterized by low grossular (Xgrs = 0.08) and high pyrope (Xprp = 0.14-0.18) garnet and high anorthite content (Xan = 0.36-0.45) plagioclase and appearance of sillimanite in gneisses. M3 stage is recorded in the rim of the garnet porphyroblast and resorbed garnet with coronal plagioclase. Pressure-temperature (P-T) conditions of M1-M3 stages calculated using geothermobarometers are M1: 11.8 kbar ( ˜42 km) and 464 ° C; M2: 6.8-7.0 kbar ( ˜25 km) and 711-722 ° C; M3: 4.0-4.6 kbar ( ˜16 km) and 523-596° C. The P-T path of M1 to M2 indicates large temperature increase ( ˜250° C) and pressure decrease (4.8 kbar). Although age and tectonic study are waited for detail studies, the preliminary result of 17 km exhumation with temperature increase may suggest significant lithospheric extension accompanying asthenospheric upwelling.

Usuki, T.; Lan, C.; Tran, T.; Yeh, M.; Iizuka, Y.

2004-12-01

80

Petrological constraints on the cooling history of high-temperature garnet peridotite massifs in lower Austria  

Microsoft Academic Search

High-temperature peridotite massifs occur as lensoid bodies with high-pressure granulites in the southern Bohemian massif.\\u000a In lower Austria the peridotites comprise garnet lherzolites lacking primary spinel, rare garnet and garnet-spinel harzburgites,\\u000a and harzburgites containing Cr-rich primary spinel instead of garnet. These phase assemblages suggest initial high-pressure\\u000a equilibration and are consistent with results from garnet-orthopyroxene geobarometry indicating equilibration at around 3–3.5?GPa.

Harry Becker

1997-01-01

81

Northeast Clean Energy Application Center  

SciTech Connect

From October 1, 2009 through September 30, 2013 (“contract period”), the Northeast Clean Energy Application Center (“NE-CEAC”) worked in New York and New England (Connecticut, Rhode Island, Vermont, Massachusetts, New Hampshire, and Maine) to create a more robust market for the deployment of clean energy technologies (CETs) including combined heat and power (CHP), district energy systems (DES), and waste heat recovery (WHR) systems through the provision of technical assistance, education and outreach, and strategic market analysis and support for decision-makers. CHP, DES, and WHR can help reduce greenhouse gas emissions, reduce electrical and thermal energy costs, and provide more reliable energy for users throughout the United States. The NE-CEAC’s efforts in the provision of technical assistance, education and outreach, and strategic market analysis and support for decision-makers helped advance the market for CETs in the Northeast thereby helping the region move towards the following outcomes: • Reduction of greenhouse gas emissions and criteria pollutants • Improvements in energy efficiency resulting in lower costs of doing business • Productivity gains in industry and efficiency gains in buildings • Lower regional energy costs • Strengthened energy security • Enhanced consumer choice • Reduced price risks for end-users • Economic development effects keeping more jobs and more income in our regional economy Over the contract period, NE-CEAC provided technical assistance to approximately 56 different potential end-users that were interested in CHP and other CETs for their facility or facilities. Of these 56 potential end-users, five new CHP projects totaling over 60 MW of install capacity became operational during the contract period. The NE-CEAC helped host numerous target market workshops, trainings, and webinars; and NE-CEAC staff delivered presentations at many other workshops and conferences. In total, over 60 different workshops, conferences, webinars, and presentation were hosted or delivered during the contract period. The NE-CEAC also produced publically available educational materials such as CHP project profiles. Finally, the NE-CEAC worked closely with the relevant state agencies involved with CHP development. In New York, the NE-CEAC played an important role in securing and maintaining funding for CHP incentive programs administered by the New York State Energy Research Development Authority. NE-CEAC was also involved in the NYC Mayor's Office DG Collaborative. The NECEAC was also named a strategic resource for the Connecticut Department of Energy and Environmental Protection’s innovative Microgrid Pilot Program.

Bourgeois, Tom

2013-09-30

82

Pliocene northeast African vegetation change  

NASA Astrophysics Data System (ADS)

Plant leaf wax molecular fossils have yielded key insights into forest-grassland transitions in northeast Africa. The stable carbon isotopic composition (?13C) of sedimentary leaf waxes (including n-alkanoic acids) records variations in the proportions of plants using the C3 (Calvin-Benson) pathway including trees, most shrubs and cool-season grasses versus the C4 (Hatch-Slack) pathway including warm-season grasses and sedges. Here we apply this technique to marine sediments from the Gulf of Aden to characterize northeast African environmental variability during the Pliocene. We sample DSDP Site 231 integrating 3kyr intervals to generate a high-resolution reconstruction spanning 3.7-5.3Ma. The ?13C compositions of downcore C30 n-alkanoic acid analyses average -27.5‰ (?=1.2, n=177), ranging between -30.2 to -24.3‰ with repeated oscillations in the proportions of C4 biomass, presumably corresponding to the eccentricity and precessional modulation of insolation acting on monsoonal precipitation. Although ?13C values cannot be uniquely translated to C4 biomass given the spread in the C3 'endmember', we find complimentary evidence for proportions of C4 biomass from the isotopic spread of the n-alkanoic homologues (n-C28 to n-C32). Comparison to pollen data indicates that at times of low ?13C values, complete forest cover remains unlikely given the presence of grass pollen - taken together these records indicate the presence of C3 grasses. By evaluating our longer record from this site, as well as the terrestrial soil carbonate record, we find the Pliocene has low C4 proportions in comparison to higher proportions in Pleistocene and even late Miocene times. Intriguingly this drop in C4 plant biomass may correspond to a period of elevated atmospheric pCO2. Our ongoing reconstructions are of interest both for constraining environments of hominin evolution and tropical climate variability prior to the onset of Northern Hemisphere Glaciation, in particular during this Pliocene time period of interest as a 'modest greenhouse' world.

Liddy, H.; Sieracki, A.; Feakins, S. J.

2012-12-01

83

Relict permafrost features in Mediterranean environments: the Majella Massif  

NASA Astrophysics Data System (ADS)

The Earth's climate has warmed by about 0.74 °C over the past century and a further warming is predicted for the next decades. Climatic changes propagate downward into the ground and modify soil thermal regime inducing many transformations. It is expected that climate warming will cause increased permafrost melting in high latitude environments and even to total permafrost degradation in regions of lower latitude. In fact, direct observations in the tundra region have shown recent increases in surface and soil temperatures and permafrost melting while in many European mountains recent micro-climatologic studies have identified only small alpine enclaves of screes with permafrost. However, in the literature no reports exist on relict permafrost in the Apennines, except for few observations about the presence of periglacial features such as rock glaciers. Some authors indicated in the past the presence of favourable conditions for preserving sporadic mountain permafrost in the Majella Massif (Central Apennines, Italy), especially in the upper Cannella Valley, where sun irradiation is particularly reduced and winds blow very energetically during the cold period. In the same valley, we monitored soil temperatures at different depths since 2006, in order to study the effects of climate change on pedogenesis and to evaluate the resilience of soils to change. The temperature data referred to the 2006-2007 and those of 2007-2008 showed different trends. The temperatures of the first year were relatively mild and soil freezing was progressively induced from top to down soil. In contrast, during the winter of the second year the temperatures assumed the lowest values (minus 2-3°C) atop the soil, increased down soil (plus 0.5-1.5°C) till he depth of 30-40 cm and decrease to minus 1-2°C more in depth (60 cm); in addition, in depth, the temperature below 0°C were reached before than at surface. This behaviour was evidently due to a deep cold source and interpreted as a clue of the presence of relict permafrost in the ground. The presence of an even deep permafrost would explain the observations made during a previous survey in August 2004, when in a soil pit dug till the depth of 2.6 m we measured temperatures that from 22.6°C at surface progressively decreased till 2.1°C at depth. The area under study is close to the Mount Amaro where there is an active rock-glacier that some authors considered the last relict permafrost feature of Late Pleistocene glacial events that interested the Apennines.

Cocco, S.; Basili, M.; Cioci, C.; di Peco, D.; Brecciaroli, G.; Agnelli, A.; Corti, G.

2009-04-01

84

Thermal Properties of paleozoic rocks from the Rhenish Massif  

NASA Astrophysics Data System (ADS)

Large areas of Germany and neighbouring countries are formed by paleozoic rock formations. Beside large outcrops such as the mountain chains of the Rhenish Massif, paleozoic rocks also dominate the subsurface as forming the Northern Germany basement. Still, reliable data sets on thermal properties are rare. To improve this situation, paleozoic rocks samples from outcrops and drillings of North-Rhine Westfalia were investigated. We studied about 230 core samples and obtained information on thermal conductivity, density, porosity and Vp-velocity of the rocks in dry and saturated conditions. In addition, about 50 core plugs were taken for measurements of heat capacity, and P-T-dependent thermal conductivity and thermal diffusivity. Chemical and mineralogical analyses were performed on almost 100 samples. Thus, a unique data set was created, which enables to connect thermal properties to rock porosity and to mineralogical and chemical rock composition. Data analysis revealed the mineralogical composition as the most prominent factor for effective thermal conductivity. This is especially the case for the Carboniferous and Devonian sandstones with quartz contents varying from 35 to 95%. Rock porosity in paleozoic rocks is usually low and it's impact on thermal properties not as significant as the rock mineralogy. Thus, the geometric mixing law is applicable only for rocks, if the mineralogical composition is known. In a similar way, mineralogy affects the temperature and pressure dependence of thermal properties. The strong mineralogical variation of the sandstones leads to non-uniform P-T trends of thermal properties. Only claystones and carbonates show more consistent dependency trends. This allows the definition of rock type specific P-T-correction values. In a following step, the results from the discrete core measurements were combined with continuous borehole geophysical data. Based on the laboratory data, petrophysical models were built up. This allows deriving continuous profiles of rock porosity and volumes of shale, sandstone, coal and carbonates for the different drillings. By this information, the geometric mixing law could be applied to calculate continuous thermal conductivity profiles. These profiles give information on the vertical and lateral heterogeneity of thermal properties and were used to derive statistically proven value ranges for entire stratigraphic units. These values can serve as input parameters for geothermal models and can help to reduce the uncertainty of numerical simulations.

Pechnig, Renate; Mottaghy, Darius; Arnold, Juliane; Koch, Andreas; Jorand, Rachel

2010-05-01

85

Northeast regional biomass energy program  

SciTech Connect

The management structure and program objectives for the Northeast Regional Biomass Program remain unchanged from previous years. The funding for this year however has been considerably reduced permitting the issuance of grants to states to be held to $15,000/state. To alleviate this condition, $120,000 of unobligated state grant funds has been transferred to the technical subcontract area. Technical projects have been selected by the Steering Committee. Work statements are in preparation. The final report entitled Energy Implications of Alternative Solid Waste Management Systems'' has been prepared and copies have been distributed to NRBP states. An overview of the findings are as follows: all but three states (DE, ME, MA) show positive waste management systems balance, incinerator goals are the single largest contributor to systems balance, significant projected energy savings through waste recycling operations, recycling waste leads to reduced energy use for operations, recycling yields a higher value fuel and less ash, infrastructure to handle planned recyclables will require major improvements, and several cases of inconsistency in State MSW Plans.

O'Connell, R.A.

1990-04-01

86

Structure, age, and ore potential of the Burpala rare-metal alkaline massif, northern Baikal region  

NASA Astrophysics Data System (ADS)

The Burpala alkaline massif is a unique geological object. More than 50 Zr, Nb, Ti, Th, Be, and REE minerals have been identified in rare-metal syenite of this massif. Their contents often reach tens of percent, and concentrations of rare elements in rocks are as high as 3.6% REE, 4% Zr, 0.5% Y, 0.5% Nb, 0.5% Th, and 0.1% U. Geological and geochemical data show that all rocks in the Burpala massif are derivatives of alkaline magma initially enriched in rare elements. These rocks vary in composition from shonkinite, melanocratic syenite, nepheline and alkali syenites to alaskite and alkali granite. The extreme products of magma fractionation are rare-metal pegmatites, apatite-fluorite rocks, and carbonatites. The primary melts were related to the enriched EM-2 mantle source. The U-Pb zircon ages of pulaskite (main intrusive phase) and rare-metal syenite (vein phase) are estimated at 294 ± 1 and 283 ± 8 Ma, respectively. The massif was formed as a result of impact of the mantle plume on the active continental margin of the Siberian paleocontinent.

Vladykin, N. V.; Sotnikova, I. A.; Kotov, A. B.; Yarmolyuk, V. V.; Sal'nikova, E. B.; Yakovleva, S. Z.

2014-07-01

87

Glacial regime of the highest Tien Shan mountain, Pobeda-Khan Tengry massif  

Microsoft Academic Search

Major processes controlling the existence of a large subcontinental glacier system were identified on the basis of glaciological , meteorological and isotopic analyses using expeditionary and long-term data. Observations occurred on the southern Inylchek glacier located in the Pobeda - Khan Tengry massif, the largest subcontinental glacier system in the northern periphery of central Asia. More than 1200 glaciers with

VLADIMIR B. AIZEN; ELENA M. AIZEN; JOHN M. MELACK; DAVID D. SEXTON; VICTOR N. NESTEROV

1997-01-01

88

Sulfur mineralogy and geochemistry of serpentinites and gabbros of the Atlantis Massif (IODP Site U1309)  

E-print Network

Sulfur mineralogy and geochemistry of serpentinites and gabbros of the Atlantis Massif (IODP Site U and an anhydrite vein in a gabbro provide temperature constraints of 150­200 °C for late circulating fluids along primarily con- trolled by seawater­gabbro interaction and subsequent serpentinization. The basement rocks

Gilli, Adrian

89

Multiple zircon growth during fast exhumation of diamondiferous, deeply subducted continental crust (Kokchetav Massif, Kazakhstan)  

Microsoft Academic Search

Diamondiferous rocks from the Kokchetav Massif, Kazakhstan, represent deeply subducted continental crust. In order to constrain the age of ultra high pressure (UHP) metamorphism and subsequent retrogression during exhumation, zircons from diamondiferous gneisses and metacarbonates have been investigated by a combined petrological and isotopic study. Four different zircon domains were distinguished on the basis of transmitted light microscopy, cathodoluminescence, trace

Jörg Hermann; Daniela Rubatto; Andrei Korsakov; Vladislav S. Shatsky

2001-01-01

90

Textural, isotopic and REE variations in spinel peridotite xenoliths, Massif Central, France  

Microsoft Academic Search

Sr and Nd isotope analyses and REE patterns are presented for a suite of well-documented mantle-derived xenoliths from the French Massif Central. The xenoliths include spinel harzburgites, spinel lherzolites and some pyroxenites. They show a wide range of textures from undeformed protogranular material through porphyroclastic to equigranular and recrystallised secondary types. Textural differences are strongly linked to trace element geochemistry

Hilary Downes; Claude Dupuy

1987-01-01

91

Jurassic hot spring deposits of the Deseado Massif (Patagonia, Argentina): Characteristics and controls on regional distribution  

Microsoft Academic Search

The Deseado Massif, Santa Cruz Province, Argentinean Patagonia, hosts numerous Middle to Late Jurassic age geothermal and epithermal features represented by siliceous and calcareous chemical precipitates from hot springs (sinters and travertines, respectively), hydrothermal breccias, quartz veins, and widespread hydrothermal silicification. They indicate pauses in explosive volcanic activity, marking the final stages in the evolution of an extensive Jurassic (ca.

Diego M. Guido; Kathleen A. Campbell

2011-01-01

92

Alpine thermal and structural evolution of the highest external crystalline massif: The Mont Blanc  

E-print Network

or shear zones, and located in the hanging wall of aAlpine thermal and structural evolution of the highest external crystalline massif: The Mont Blanc 2004; accepted 15 March 2005; published 1 July 2005. [1] The alpine structural evolution of the Mont

Lacassin, Robin

93

HP/LT Rocks Exhumed During Intra-Oceanic Subduction: The Example of the Escambray Massif  

E-print Network

HP/LT Rocks Exhumed During Intra-Oceanic Subduction: The Example of the Escambray Massif (Central analyses (major, trace elements and isotopes) of the high pressure rocks show that they could be partially in the subduction zone by tectonic erosion. The High-Pressure rocks record a prograde path from the epidote bearing

Paris-Sud XI, Université de

94

The eastern Himalayan syntaxis is host to the actively deforming metamorphic massif,  

E-print Network

ABSTRACT The eastern Himalayan syntaxis is host to the actively deforming metamorphic massif and geochrono- logic information on metamorphic rocks from the Namche Barwa­Gyala Peri region. Pressure-temperature data are combined with U-Th-Pb ages of monazite and titanite in an effort to trace the metamorphic

Kidd, William S. F.

95

Teaching Quality after the Massification of Higher Education in Taiwan: A Student Perspective  

ERIC Educational Resources Information Center

To explore whether teaching quality was improved by the Taiwan Ministry of Education's implementation of the Teaching Excellence Program after the massification of higher education, the authors used data from a 2007 student survey to build a Teaching Quality Assessment Model to analyze university students' views of the Teaching Excellence…

Dian-Fu, Chang; Yeh, Chao-Chi

2012-01-01

96

Time of formation and genesis of yttrium-zirconium mineralization in the Sakharjok massif, Kola Peninsula  

NASA Astrophysics Data System (ADS)

The Kola geotectonic province in the northeastern Fennoscandian Shield accommodates a significant number of alkaline rock massifs differing in age. They are of mantle and mantle-crustal origin (alkali and nepheline syenites, carbonatites) and related to crustal sources (Neoarchean alkali granites). Among them, the Neoarchean Sakharjok nepheline syenite massif is related to the oldest intrusions of this kind bearing yttrium-zirconium mineralization. The crystallization of alkali syenite pertaining to the first intrusive phase of the intrusive Sakharjok massif is dated to 2645 ± 7 Ma, and this implies that this syenite postdated alkali granites (2.66-2.67 Ga). To date the yttrium-zirconium ore, we applied the local U-Pb method to zircon crystals occurring in the mineralized block hosted in nepheline syenite. The earliest fragments of zircon crystallized 1832 ± 7 Ma ago; the age of metamorphism is estimated at 1784 ± 13 Ma. These dates indicate the Paleoproterozoic age of the yttrium-zirconium mineralization, which was formed as a product of fluid reworking of the Neoarchean nepheline syenite of the Sakharjok massif.

Vetrin, V. R.; Skublov, S. G.; Balashov, Yu. A.; Lyalina, L. M.; Rodionov, N. V.

2014-12-01

97

Ecotourism demand in North-East Italy.fig Ecotourism demand in North-East Italy  

E-print Network

Ecotourism demand in North-East Italy.fig 1 Ecotourism demand in North-East Italy Tempesta T.1-alimentary Economics and Policy, University of Milan, Italy Email: tiziano.tempesta@unimi.it 2 PhD Student, Department of Economics, University of Udine, Italy 3 Professor, Department of Economics, University of Udine, Italy

Tempesta, Tiziano

98

Geology of the epithermal Ag-Au Huevos Verdes vein system and San José district, Deseado massif, Patagonia, Argentina  

NASA Astrophysics Data System (ADS)

The San José district is located in the northwest part of the Deseado massif and hosts a number of epithermal Ag-Au quartz veins of intermediate sulfidation style, including the Huevos Verdes vein system. Veins are hosted by andesitic rocks of the Bajo Pobre Formation and locally by rhyodacitic pyroclastic rocks of the Chon Aike Formation. New 40Ar/39Ar constraints on the age of host rocks and mineralization define Late Jurassic ages of 151.3 ± 0.7 Ma to 144.7 ± 0.1 Ma for volcanic rocks of the Bajo Pobre Formation and of 147.6 ± 1.1 Ma for the Chon Aike Formation. Illite ages of the Huevos Verdes vein system of 140.8 ± 0.2 and 140.5 ± 0.3 Ma are 4 m.y. younger than the volcanic host rock unit. These age dates are among the youngest reported for Jurassic volcanism in the Deseado massif and correlate well with the regional context of magmatic and hydrothermal activity. The Huevos Verdes vein system has a strike length of 2,000 m, with several ore shoots along strike. The vein consists of a pre-ore stage and three main ore stages. Early barren quartz and chalcedony are followed by a mottled quartz stage of coarse saccharoidal quartz with irregular streaks and discontinuous bands of sulfide-rich material. The banded quartz-sulfide stage consists of sulfide-rich bands alternating with bands of quartz and bands of chlorite ± illite. Late-stage sulfide-rich veinlets are associated with kaolinite gangue. Ore minerals are argentite and electrum, together with pyrite, sphalerite, galena, chalcopyrite, minor bornite, covellite, and ruby silver. Wall rock alteration is characterized by narrow (< 3 m) halos of illite and illite/smectite next to veins, grading outward into propylitic alteration. Gangue minerals are dominantly massive quartz intergrown with minor to accessory adularia. Epidote, illite, illite/smectite, and, preferentially at deeper levels, Fe-chlorite gangue indicate near-neutral pH hydrothermal fluids at temperatures of >220°C. Kaolinite occurring with the late sulfide-rich veinlet stage indicates pH < 4 and a temperature of <200°C. The Huevos Verdes system has an overall strike of 325°, dipping on average 65° NE. The orientations of individual ore shoots are controlled by vein strike and intersecting north-northwest-striking faults. We propose a structural model for the time of mineralization of the San José district, consisting of a conjugate shear pair of sinistral north-northwest- and dextral west-northwest-striking faults that correspond to R and R' in the Riedel shear model and that are related to master faults (M) of north-northeast-strike. Veins of 315° strike can be interpreted as nearly pure extensional fractures (T). Variations in vein strike predict an induced sinistral shear component for strike directions of >315°, whereas strike directions of <315° are predicted with an induced dextral strike-slip movement. The components of the structural model appear to be present on a regional scale and are not restricted to the San José district.

Dietrich, Andreas; Gutierrez, Ronald; Nelson, Eric P.; Layer, Paul W.

2012-03-01

99

Geological setting and petrogenesis of symmetrically zoned, miarolitic granitic pegmatites at Stak Nala, Nanga Parbat - Haramosh Massif, northern Pakistan  

USGS Publications Warehouse

Miarolitic granitic pegmatites in the Stak valley in the northeast part of the Nanga Parbat - Haramosh Massif, in northern Pakistan, locally contain economic quantities of bi- and tricolored tourmaline. The pegmatites form flat-lying sills that range from less than 1 m to more than 3 m thick and show symmetrical internal zonation. A narrow outer or border zone of medium-to coarse-grained oligoclase - K-feldspar - quartz grades inward to a very coarse-grained wall zone characterized by K-feldspar - oligoclase - quartz - schorl tourmaline. Radiating sprays of schorl and flaring megacrysts of K-feldspar (intermediate microcline) point inward, indicating progressive crystallization toward the core. The core zone consists of variable mixtures of blocky K-feldspar (intermediate microcline), oligoclase, quartz, and sparse schorl or elbaite, with local bodies of sodic aplite and miarolitic cavities or "pockets". Minor spessartine-almandine garnet and lo??llingite are disseminated throughout the pegmatite, but were not observed in the pockets. The pockets contain well-formed crystals of albite, quartz, K-feldspar (maximum microcline ?? orthoclase overgrowths), schorl-elbaite tourmaline, muscovite or lepidolite, topaz, and small amounts of other minerals. Elbaite is color-zoned from core to rim: green (Fe2+- and Mn2+-bearing), colorless (Mn2+-bearing), and light pink (trace Mn3+). Within ???10 cm of the pegmatites, the granitic gneiss wallrock is bleached owing to conversion of biotite to muscovite, with local quartz and albite added. Schorl is disseminated through the altered gneiss, and veins of schorl with bleached selvages locally traverse the wallrock up to 1 m from the pegmatite contact. The schorl veins can be traced into the outer part of the wall zone, which suggests that they formed from aqueous fluids derived during early saturation of the pegmatite-forming leucogranitic magma rich in H2O, F, B, and Li. Progressive crystallization resulted in a late-stage sodic magma and abundant aqueous fluids. Two late stages of volatile escape are recognized: the first stage caused pressure-quenching of the last magma, which produced aplite and caused albitization (An3 to An8) of earlier crystallized K-feldspar and oligoclase. The second stage, released during the rupture of miarolitic cavities, produced platy albite ("cleavelandite," An1) locally associated with F-rich moscovite and elbaite. Albitization is likely due to cooling of alkali-fluoride-dominated fluids at less than 2 kbar pressure. The pegmatites are derived from Himalayan leucogranitic magma emplaced prior to 5 Ma into granulitic gneiss that was at 300?? to 550??C and 1.5 to 2 kbar. The pegmatites were emplaced during uplift of the Haramosh Massif, since they cross-cut ductile normal faults but are cut by brittle normal faults. Economically important pink tourmaline mineralization formed in pockets concentrated near the crest of a broad antiform, as a result of trapping of late magmatic aqueous fluids that had become Fe-poor owing to the prior crystallization of schorl.

Laurs, B.M.; Dilles, J.H.; Wairrach, Y.; Kausar, A.B.; Snee, L.W.

1998-01-01

100

Cooling history of the Arize and Trois-Seigneurs Massifs, northern Pyrenees, and tectonic implications  

NASA Astrophysics Data System (ADS)

Providing constraints on the temporal and spatial evolution of shortening in collision zones is key to reconstruct past plate motion. Yet, dating the onset of collision is often elusive and is at best constrained by a variety of proxies. For instance, onset of plate flexure, onset of thrust-related cooling or first arrival of metamorphic clasts in foreland sourced from the orogen characterized a mature orogenic stage rather than the initiation of the collision that usually occurs underwater. Here, we study the northern Pyrenean granitic massifs of the Arize and Trois-Seigneurs Massifs (Ariège, Central North-Pyrenean Zone) exposed on the retro-wedge side of the orogen. Apatite fission-track data from these massifs indicate that collision-related exhumation started in the Early Eocene and lasted until Miocene. However, scarce constraints from higher temperature thermochronometers and detrital thermochronological provide first arguments for an earlier cooling during Late Cretaceous. To gain a better resolution of the cooling/exhumation history from initiation of convergence to mature collisional stage, we provide interpretations from new in-situ apatite and zircon fission-track and (U-Th-Sm)/He and zircon U-Pb data from the Arize and Trois Seigneurs, and detrital zircon fission-track and (U-Th-Sm)/He data from the Camarade Basin, north of the Ariège Massifs. These are then discussed in the light of structural data. Our study shows that significant cooling from mid-crustal level is recorded since Late Cretaceous. Comparison with RSCM temperatures obtained from the surrounding folded Mesozoic units show temperature offsets suggesting that the cover had a distinctive tectonic history with regard to the Paleozoic massifs. This has large implications on the tectonic evolution of the Central Pyrenees and on how plate convergence was accommodated within the northern Pyrenean domain.

Vacherat, Arnaud; Mouthereau, Frédéric; Pik, Raphaël; Bellahsen, Nicolas; Gautheron, Cécile; Bernet, Matthias; Paquette, Jean-Louis; Tibari, Bouchaïb; Pinna, Rosella

2014-05-01

101

Timing of Variscan HP-HT metamorphism in the Moldanubian Zone of the Bohemian Massif: UPb SHRIMP dating on multiply zoned zircons from a granulite from the Dunkelsteiner Wald Massif, Lower Austria  

Microsoft Academic Search

In an attempt to better constrain the timing of Variscan HP-HT metamorphism in the SE Bohemian Massif we have dated zoned\\u000a zircons from a garnet-kyanite granulite of granitic composition from the Dunkelsteiner Wald Massif, Lower Austria, by means\\u000a of sensitive high-resolution ion microprobe (SHRIMP) technique. In order to combine isotopic information with crystal growth\\u000a textures, CL and BSE images were

Gertrude Friedl; Rob A. Cooke; Friedrich Finger; Neal J. McNaughton; Ian R. Fletcher

102

Petrology of UHP calcite marble from the Kokchetav Massif  

NASA Astrophysics Data System (ADS)

In the Kumdy-kol area, Kokchetav Massif, northern Kazakhstan, three types of UHP marbles have been described: diamond-bearing dolomite marble, Ti-clinohumite-bearing dolomitic marble (Ogasawara et al., 2000) and titanite-bearing calcite marble (Ogasawara et al., 2002). UHP calcite marble is distinguished from other types of UHP marbles by pure calcite (after aragonite) as a dominant carbonate phase. This calcite marble has unique evidence of UHP metamorphism; titanite with coesite exsolution and its precursor compositions indicated that the peak P-T conditions was > 6 GPa and 980-1250 C (Ogasawara et al., 2000; 2002). This rock shows typical granoblastic texture consisting of calcite, diopside, K-feldspar, titanite and symplectite (diopside + zoisite) after garnet. The peak assemblage was aragonite + diopside + K-feldspar + garnet + titanite. Based on the phase relations in the system CaO-MgO-TiO2-SiO2-CO2-H2O, aragonite + diopside + rutile tie-triangle is stable under UHP conditions and divides the compositional space into dolomite-bearing or dolomite-free tetrahedrons (Kikuchi et al., 2003). The presence of titanite in calcite marble means that P-T condition was located at the right-hand side of the reaction rutile + aragonite + coesite = titanite + CO2. Previously described titanite-bearing calcite marble is diamond-free (A-type) and is characterized by titanite with coesite exsolution (Ogasawara et al., 2002). Recently, we found a small amount of diamond in calcite marble (B-type) that is characterized by microdiamond in diopside, and by the lack of K-feldspar and low amount of titanite. No diamond occurs in titanite. Rutile, aragonite and calcite inclusions in titanite were found in titanite of B-type calcite marble. These three inclusion phases in titanite that were confirmed by laser Raman spectroscopy are the evidence for titanite formation reaction described above. This titanite forming reaction occurs at extremely low XCO2 conditions as 0.02. In B-type calcite marble, microdiamond occurs locally and its amount is low; only 61 grains were found in two thin sections. Distributions of titanite, K-feldspar and diamond are heterogeneous and seem to form layers. Diamond occurs in the domain where amounts of titanite and K-feldspar are relatively low. Low amount of microdiamond may be related with extremely low-XCO2 condition under UHP metamorphism. References Ishida et al. (2003: Journal of Metamorphic Geology, Vol. 21, p. 515-522. Kikuchi et al. (2003): EOS Transactions AGU, Vol. 84, F1532. Ogasawara et al. (2000): The Island Arc, Vol. 9, p 400-416. Ogasawara et al. (2002): American Mineralogist, Vol. 87, p. 454-461.

Aoki, K.; Adachi, T.; Kikuchi, M.; Ogasawara, Y.

2004-12-01

103

Paleomagnetic results from Cenozoic volcanics of Lusatia, NW Bohemian Massif  

NASA Astrophysics Data System (ADS)

Lusatia is situated in the NE continuation of the Ohre Rift (OR) behind Lusatian Overtrust. Compared to the neighbouring volcanic complex of the ?eské stredohorí Mts. (CS) inside the OR. The scattered occurrences of basaltic bodies in Lusatia are spread on wider area. This can be caused by different tectonic development of the regions and from derived erosional conditions. The Lusatian Overtrust, high-order tectonic structure running across the course of the OR, separates Lusatian region into two different geological areas where Cretaceous sediments or granodiorites of Lusatian Massif represent the country rock of the Cenozoic volcanism, respectively. The age of volcanic activity ranges from 19 to 33 Ma, it's proved by newly obtained Ar-Ar data from Freiberg and K-Ar data from Debrecen. Forty two scattered remnants of Cenozoic volcanic products were sampled to get paleomagnetic data. The superficial volcanics with detectable geological position and volcanology were chosen preferentially, several dykes and separate vents were sampled as well. Paleomagnetic research was processed on more than 500 samples which were demagnetized using alternate field in the range 0-80 mT. Q-ratio was counted to prevent the lightning influence - solitary volcanic occurrences build positive morphology and thus, they are prone to be targeted by lightnings. The values of Q-ratio predominantly span from 0.1 to 7.0; those samples having the value over 10, were excluded for evaluation. The mean paleomagnetic direction (MPD) was acquired from several samples on each sampling site. Declination and Inclination show values of 11.8 deg and 62.7 deg (?95 = 9.3 deg) for normal polarity, or 182.1 deg and -59.2 deg (?95 = 6.1 deg) for reverse polarity, respectively,The corresponding paleolatitude of 41.9 deg was counted from the Inclination. This is 1000 km to the South, compared to recent position. The dispersions of the MPD are relatively wide. This coincides well with the idea of long-lasting volcanic activity in Lusatia and supports the radiometric results. Duration of volcanic activity in Lusatia is similar to CS volcanic complex in OR and differs from these which are outside this structure. In combination of reversal test and the wide dispersion of MPD, the centred secular variation was proved. It allowed counting of the virtual geomagnetic pole (VGP) position on coordinates 79.9 N and 167.5 E (dp = 6.1 deg, dm = 7.9 deg), which corresponds with the Late Tertiary apparent polar wander path for Europe. The VGP counted from volcanics in Lusatia is relatively close to the data obtained mainly from the CS Volcanic Complex (85.09 N and 160.88 E). The paleomagnetic results of volcanic rocks from Lusatia, obtained up to now, show great similarity to that ones from the CS Volcanic Complex. This is another argument for an idea of joint volcanic development of these regions. It also contributes to the entitled use of the CS lithostratigraphic units in Lusatia.

Schnabl, P.; Cajz, V.; Tietz, O.; Buechner, J.; Suhr, P.; Pecskay, Z.; Cizkova, K.

2013-05-01

104

Long lasting paleolandscapes stability of the French Massif Central during the Mesozoic  

NASA Astrophysics Data System (ADS)

Regional geodynamical evolution is mainly constrained by the sedimentary record in the basins. Usually, little is known about geodynamics of the peripheral areas and even less on the evolution of the basement areas. Continental unconformities are essential to estimate erosion rates of basement and to model the crustal dynamics that control subsidence of surrounding sedimentary basins but also uplift and erosion on their edges. Dating such unconformities has always been the stumbling block while it is a prerequisite to constrain geodynamical models. Paleomagnetism has been proven as a suitable tool to date ferrugineous paleoweathering features. The method has been applied to paleoweathering occurrences resting on the Massif Central crystalline basement as well as to paleoweathering features affecting the crystalline basement itself. The remanence measurements were obtained at the Paleomagnetic Laboratory of the Institut Physique du Globe de Paris and data analyses were carried out using PaleoMac 5 software (Cogné, 2003). Relative dating of the paleoweathering profiles have been acquired by comparing the recorded paleomagnetic poles from the analysed samples to the apparent polar wandering path of the Eurasian plate (Edel et Duringer, 1997 ; Besse and Courtillot, 2003). Thick red kaolinitic formations rest locally on the Massif Central basement. They are generally bounded by the Tertiary grabens and buried by the Oligocene formations. Thus these azoic red formations have classically been ascribed to the "Siderolithic" formations of Eocene-Oligocene age. They show many pedogenic features (termites burrows, illuviation and hydromorphic features and nodules) and strong relationships with paleolandscape organisation (leaned against fault scarps, infilling paleovalleys, etc.). Macro and micromorphological arrangements show that these formations are in situ paleosols. Paleomagnetic ages range from 160 Ma (Late Jurassic) in the centre of the Massif Central to 140 Ma (Early Cretaceous) in the northern parts of the massif (Ricordel et al., 2005; Ricordel, 2007;). These new ages, fairly older than the expected ones, bring considerable changes in the palaeogeographic evolution of the Massif Central during Mesozoic and Cenozoic. Basement rocks (granites, gneiss, rhyolites and even Permo-Carboniferous sediments) show often pinkish facies throughout the Massif Central. It has been shown that these pink facies are albitised (mainly pseudomorphic replacement of the primary plagioclases into albite and alteration of the biotite into chlorite) (Schmitt, 1992; Parcerisa et al., 2009). These albitised facies are arranged in a clear succession against (?) the Triassic unconformity that gives significant constraints about their development in relation with the Triassic palaeosurface. Secondary albite and chlorite contain minute hematite inclusions, which have been dated, using paleomagnetism, to be Triassic in age (245 Ma) (Ricordel et al., 2007). Given that the alterations are of the same age as the unconformity, it then follows that the albitised facies be related to the Triassic palaeosurface and be used to track back the Triassic palaeosurface through wide crystalline areas, even far away from the Mesozoic cover. Palaeomagnetic analyses allowed dating a large range of paleoweathering features for which no objective datings were previously available. Spatial and temporal distributions of the paleoweathering features and related unconformities provide key arguments to unravel the geodynamic evolution of the Massif Central. ?Triassic, Late Jurassic and Tertiary unconformities are superimposed on large areas of the Massif Centrall. This implies very little erosion of the crystalline basement since Triassic time, as shown by the widespread preservation of the Triassic albitized facies. Since the red kaolinitic paleosols of Late Jurassic/Early Cretaceous age rest directly on the basement rocks, large areas of the Massif Central were uncovered at this period, and more importantly no Jurassic cover was preserved (if such a cover w

Ricordel-Prognon, C.; Thiry, M.; Theveniaut, H.; Lagroix, F.

2009-04-01

105

Emplacement depths and radiometric ages of Paleozoic plutons of the NeukirchenKdyne massif: differential uplift and exhumation  

E-print Network

gabbro, Hoher­Bogen metagabbro), which yield Cambrian ages, either intruded or were metamorphosed: Cadomian orogeny; Variscan orogenic collapse; Corona gabbro; Tepla´ ­Barrandian unit; Bohemian Massif 0040

Dörr, Wolfgang

106

20. DETAIL OF OFFICE FURNITURE IN NORTHEAST CORNER OF SECRETARIES' ...  

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

20. DETAIL OF OFFICE FURNITURE IN NORTHEAST CORNER OF SECRETARIES' OFFICE ALONG NORTH SIDE OF FIRST FLOOR. VIEW TO NORTHEAST. - Boise Project, Boise Project Office, 214 Broadway, Boise, Ada County, ID

107

11. DETAIL SHOWING ROLLING ENGINE DECK AND NORTHEAST TRUSS OF ...  

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

11. DETAIL SHOWING ROLLING ENGINE DECK AND NORTHEAST TRUSS OF SUPERSTRUCTURE. Looking northeast. - Edwards Air Force Base, Air Force Rocket Propulsion Laboratory, Test Stand 1-A, Test Area 1-120, north end of Jupiter Boulevard, Boron, Kern County, CA

108

Steam sand dryer in northeast part of sand tower. View ...  

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

Steam sand dryer in northeast part of sand tower. View to northeast - Duluth & Iron Range Rail Road Company Shops, Sand Tower, Southwest of downtown Two Harbors, northwest of Agate Bay, Two Harbors, Lake County, MN

109

Interior view of upstairs loft, north portion; camera facing northeast. ...  

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

Interior view of upstairs loft, north portion; camera facing northeast. - Mare Island Naval Shipyard, Ordnance Warehouse, Blake Avenue, northeast corner of Blake Avenue & Railroad Avenue, Vallejo, Solano County, CA

110

55. VIEW TO NORTHEAST OF MOTOR AND REDUCTION GEAR NO. ...  

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

55. VIEW TO NORTHEAST OF MOTOR AND REDUCTION GEAR NO. 1: View towards the northeast of Motor and Reduction Gear No. 1, installed in 1957. - San Francisco Cable Railway, Washington & Mason Streets, San Francisco, San Francisco County, CA

111

19. INTERIOR OF NORTHEAST REAR BEDROOM SHOWING ALUMINUMFRAME SLIDING GLASS ...  

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

19. INTERIOR OF NORTHEAST REAR BEDROOM SHOWING ALUMINUM-FRAME SLIDING GLASS WINDOWS. VIEW TO NORTHEAST. - Bishop Creek Hydroelectric System, Plant 4, Worker Cottage, Bishop Creek, Bishop, Inyo County, CA

112

39. FOURTH FLOOR: DETAIL OF STEAM HEATING PIPES ON NORTHEAST ...  

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

39. FOURTH FLOOR: DETAIL OF STEAM HEATING PIPES ON NORTHEAST WALL OF DINING AND SOCIAL HALL ON NORTHWEST END OF BUILDING LOOKING NORTHEAST - Masonic Temple, 1111-1119 Eleventh Street, Altoona, Blair County, PA

113

4. CLUBHOUSE. NORTHEAST SIDE. VIEW TO SOUTHWEST. Rainbow Hydroelectric ...  

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

4. CLUBHOUSE. NORTHEAST SIDE. VIEW TO SOUTHWEST. - Rainbow Hydroelectric Facility, Clubhouse, On north bank of Missouri River 2 miles Northeast of Great Falls, & end of Rainbow Dam Road, Great Falls, Cascade County, MT

114

1. TWOSTALL GARAGE. FRONT (SOUTHWEST) SIDE. VIEW TO NORTHEAST. ...  

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

1. TWO-STALL GARAGE. FRONT (SOUTHWEST) SIDE. VIEW TO NORTHEAST. - Rainbow Hydroelectric Facility, Two Stall Garage, On north bank of Missouri River 2 miles Northeast of Great Falls, & end of Rainbow Dam Road, Great Falls, Cascade County, MT

115

2. FOREMAN'S HOUSE. SOUTHWEST SIDE. VIEW TO NORTHEAST. Rainbow ...  

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

2. FOREMAN'S HOUSE. SOUTHWEST SIDE. VIEW TO NORTHEAST. - Rainbow Hydroelectric Facility, Foreman's House, On north bank of Missouri River 2 miles Northeast of Great Falls, & end of Rainbow Dam Road, Great Falls, Cascade County, MT

116

2. TOOL HOUSE. NORTHEAST AND SOUTHEAST SIDES. VIEW TO WEST. ...  

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

2. TOOL HOUSE. NORTHEAST AND SOUTHEAST SIDES. VIEW TO WEST. - Rainbow Hydroelectric Facility, Tool House, On north bank of Missouri River 2 miles Northeast of Great Falls, & end of Rainbow Dam Road, Great Falls, Cascade County, MT

117

3. CLUBHOUSE. FRONT (SOUTHEAST) FACADE AND NORTHEAST SIDE. VIEW TO ...  

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

3. CLUBHOUSE. FRONT (SOUTHEAST) FACADE AND NORTHEAST SIDE. VIEW TO WEST. - Rainbow Hydroelectric Facility, Clubhouse, On north bank of Missouri River 2 miles Northeast of Great Falls, & end of Rainbow Dam Road, Great Falls, Cascade County, MT

118

4. HOUSE No. 16. NORTHEAST SIDE. VIEW TO SOUTHWEST. ...  

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

4. HOUSE No. 16. NORTHEAST SIDE. VIEW TO SOUTHWEST. - Rainbow Hydroelectric Facility, House No. 16, On north bank of Missouri River 2 miles Northeast of Great Falls, & end of Rainbow Dam Road, Great Falls, Cascade County, MT

119

1. TOOL HOUSE. NORTHEAST AND NORTHWEST SIDES. VIEW TO SOUTHEAST. ...  

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

1. TOOL HOUSE. NORTHEAST AND NORTHWEST SIDES. VIEW TO SOUTHEAST. - Rainbow Hydroelectric Facility, Tool House, On north bank of Missouri River 2 miles Northeast of Great Falls, & end of Rainbow Dam Road, Great Falls, Cascade County, MT

120

6. CLUBHOUSE. SOUTHWEST SIDE. VIEW TO NORTHEAST. Rainbow Hydroelectric ...  

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

6. CLUBHOUSE. SOUTHWEST SIDE. VIEW TO NORTHEAST. - Rainbow Hydroelectric Facility, Clubhouse, On north bank of Missouri River 2 miles Northeast of Great Falls, & end of Rainbow Dam Road, Great Falls, Cascade County, MT

121

1. THREESTALL GARAGE. SOUTHEAST AND NORTHEAST SIDES. VIEW TO WEST. ...  

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

1. THREE-STALL GARAGE. SOUTHEAST AND NORTHEAST SIDES. VIEW TO WEST. - Rainbow Hydroelectric Facility, Three Stall Garage, On north bank of Missouri River 2 miles Northeast of Great Falls, & end of Rainbow Dam Road, Great Falls, Cascade County, MT

122

3. TWOSTALL GARAGE SOUTHEAST AND NORTHEAST SIDES. VIEW TO WEST. ...  

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

3. TWO-STALL GARAGE SOUTHEAST AND NORTHEAST SIDES. VIEW TO WEST. - Rainbow Hydroelectric Facility, Two Stall Garage, On north bank of Missouri River 2 miles Northeast of Great Falls, & end of Rainbow Dam Road, Great Falls, Cascade County, MT

123

2. THREESTALL GARAGE. NORTHEAST SIDE. VIEW TO SOUTHWEST. Rainbow ...  

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

2. THREE-STALL GARAGE. NORTHEAST SIDE. VIEW TO SOUTHWEST. - Rainbow Hydroelectric Facility, Three Stall Garage, On north bank of Missouri River 2 miles Northeast of Great Falls, & end of Rainbow Dam Road, Great Falls, Cascade County, MT

124

4. FOREMAN'S HOUSE. NORTHEAST SIDE. VIEW TO SOUTHWEST. Rainbow ...  

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

4. FOREMAN'S HOUSE. NORTHEAST SIDE. VIEW TO SOUTHWEST. - Rainbow Hydroelectric Facility, Foreman's House, On north bank of Missouri River 2 miles Northeast of Great Falls, & end of Rainbow Dam Road, Great Falls, Cascade County, MT

125

Interior view of northeast unit master bedroom, looking into sleeping ...  

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

Interior view of northeast unit master bedroom, looking into sleeping porch, facing northeast - MacDill Air Force Base, Double Non-Commissioned Officers' Quarters, 7418 Hanger Loop Drive, Tampa, Hillsborough County, FL

126

10. Lighthouse boathouse and granite wharf, view north northeast, southwest ...  

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

10. Lighthouse boathouse and granite wharf, view north northeast, southwest and southeast sides of boathouse, west and south sides of dock - Whitehead Light Station, Whitehead Island, East northeast of Tenants Harbor, Spruce Head, Knox County, ME

127

7. Oil house, view northeast, west and south sides ...  

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

7. Oil house, view northeast, west and south sides - Great Duck Island Light Station, At southern tip of Great Duck Island southeast of Bass Harbor & northeast of Frenchboro, Frenchboro, Hancock County, ME

128

3. Light tower and fog signal house, view northeast, west ...  

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

3. Light tower and fog signal house, view northeast, west and south sides - Great Duck Island Light Station, At southern tip of Great Duck Island southeast of Bass Harbor & northeast of Frenchboro, Frenchboro, Hancock County, ME

129

Northeast Creek Bridge. North East, Cecil Co., MD. Sec. 1201, ...  

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

Northeast Creek Bridge. North East, Cecil Co., MD. Sec. 1201, MP 51.03. - Northeast Railroad Corridor, Amtrak route between District of Columbia/Maryland state line & Maryland/Delaware state line, Baltimore, Independent City, MD

130

Climate change in the Brazilian northeast  

NASA Astrophysics Data System (ADS)

Climate Change, Impacts and Vulnerabilities in Brazil: Preparing the Brazilian Northeast for the Future; Natal, Brazil, 27 May to 01 June 2012 The variability of the semiarid climate of the Brazilian northeast has enormous environmental and social implications. Because most of the population in this area depends on subsistence agriculture, periods of severe drought in the past have caused extreme poverty and subsequent migration to urban centers. From the ecological point of view, frequent and prolonged droughts can lead to the desertification of large areas. Understanding the causes of rainfall variability, in particular periods of severe drought, is crucial for accurate forecasting, mitigation, and adaptation in this important region of Brazil.

Rodrigues, Regina R.; Haarsma, Reindert J.; Hoelzemann, Judith J.

2012-10-01

131

North Massif lithologies and chemical compositions viewed from 2-4 mm particles of soil sample 76503  

NASA Technical Reports Server (NTRS)

We identify the lithologic and compositional components of soil 76503 based on INAA of 243 2-4-mm particles and 72 thin sections from these and associated 1-2-mm particles (76502). We present a statistical distribution of the major compositional types as the first step of a detailed comparative study of the North and South Massifs. The soil sample was collected well away from any boulder and is more representative of typical North Massif material than any single large rock or boulder sample. So far, our examination of the 76503 particles has provided a better definition of precursor igneous lithologies and their petrogenetic relationships. It has enabled us to refine the nature of mixing components for the North Massif less than 1-mm fines. It has confirmed the differences in lithologies and their proportions between materials of the North and South Massifs; e.g., the North Massif is distinguished by the absence of a 72275-type KREEP component, the abundance of a highly magnesian igneous component, and the absence of certain types of melt compositions found in the South Massif samples.

Bishop, Kaylynn M.; Jolliff, Bradley L.; Korotev, Randy L.; Haskin, Larry A.

1992-01-01

132

NORTHEAST VIEW OF FOUNDRY FROM TOP OF GREY IRON CUPOLA ...  

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

NORTHEAST VIEW OF FOUNDRY FROM TOP OF GREY IRON CUPOLA SHOWING CORE ROOM ROOF DIRECTLY NORTHEAST, GREY IRON FOUNDRY TO THE RIGHT, MALLEABLE IRON CUPOLAS AND FOUNDRY NORTHEAST OF GREY IRON FOUNDRY WITH THE BRASS FOUNDRY IN THE REAR. - Stockham Pipe & Fittings Company, 4000 Tenth Avenue North, Birmingham, Jefferson County, AL

133

AMMA 2006/ PIRATA Northeast Extension / Sahara Dust Cruise Report  

E-print Network

AMMA 2006/ PIRATA Northeast Extension / Sahara Dust Cruise Report NOAA Ship Ronald H. Brown RB/PIRATA Northeast Extension Cruise RB0605 was designed to collect a suite of oceanographic and meteorological of the PIRATA array, and to service a PIRATA backbone mooring at 0º, 23ºW. The cruise track and northeast

134

A Snowfall Impact Scale Derived from Northeast Storm Snowfall Distributions  

Microsoft Academic Search

A Northeast snowfall impact scale (NESIS) is presented to convey a measure of the impact of heavy snowfall in the Northeast urban corridor, a region that extends from southern Virginia to New England. The scale is derived from a synoptic climatology of 30 major snowstorms in the Northeast urban corridor and applied to the snowfall distribution of 70 snowstorms east

Paul J. Kocin; Louis W. Uccellini

2004-01-01

135

The Sidi Mohamed peridotites (Edough Massif, NE Algeria): Evidence for an upper mantle origin  

NASA Astrophysics Data System (ADS)

The Hercynian Edough massif is the easternmost crystalline massif of the Algerian coast. It consists of two tectonically superposed units composed of micaschists, gneisses, and peridotite. This study concentrates on the small and isolated Sidi Mohamed peridotite outcrop area (0.03 km2). The Sidi Mohamed peridotite is composed mainly of harzburgites (Mg-rich olivine and orthopyroxene as major minerals). The Ni (2051-2920 ppm), Cr (2368-5514 ppm) and MgO (~28-35 wt.%) whole-rock composition and the relative depletion in Nb make these harzburgites comparable to depleted peridotites related to a subduction zone. We suggest that the Sidi Mohamed ultramafic body was derived directly from the upper mantle and tectonically incorporated into the gneiss units of the Edough metamorphic core complex in a subduction environment.

Zobir, Soraya Hadj; Oberhänsli, Roland

2013-12-01

136

Engineering—Geological features of a massif of carbonate rocks for construction of water reservoirs  

Microsoft Academic Search

Summary  Based on accumulated experience obtained during the construction of several water reservoirs located in carbonate rock areas\\u000a in Poland, the paper presents the principal engineering-geological problems of investigating these rocks.\\u000a \\u000a The principles involved in finding a model of the geological structure of a carbonate rock massif and an engineering-geological\\u000a description of elements of this model, for example: tectonics, fissuring, karst

H. Lozinska Stepien; Regina Pozniak

1982-01-01

137

Extreme Nd isotope homogeneity in a large rhyolitic province: the Estérel massif, southeast France  

Microsoft Academic Search

Previous detailed studies of large rhyolite bodies propose that their elemental and isotopic characteristics were largely\\u000a acquired in shallow crustal magma chambers. This model explains the common chemical and isotopic zonations of large volumes\\u000a of rhyolites as well as the less common chemical and isotopic homogeneity of such bodies. We report an intermediate situation\\u000a (the Estérel massif, southeast France) in

Franck Poitrasson; Christian Pin

1998-01-01

138

Extensional and compressional faults in the Everest Lhotse massif, Khumbu Himalaya, Nepal  

Microsoft Academic Search

Two large-scale north-dipping, low-angle normal faults cut the Everest massif at the top of the High Himalayan slab in Nepal. The upper fault the Qomolangma Detachment, follows the north slope of Everest from above the 'Yellow Band' at c. 8500 m on the Southwest Face down to the Rongbuk glacier. On the south side of Everest this fault places unmetamorphosed

M. P. SEARLE

1999-01-01

139

UPb dating of magmatic zircon and metamorphic baddeleyite in the Ligurian eclogites (Voltri Massif, Western Alps)  

Microsoft Academic Search

U-Pb geochronology with ion microprobe (SHRIMP) analysis has been carried out on eclogite-facies rocks of the Beigua Unit, an ophiolitic slice of the Voltri Massif, Western Alps. The investigated samples are eclogites and high-pressure metasomatic rocks (metarodingites and centimetre-sized Ti-clinohumite-bearing dykes). Zircon contained in an eclogitic metagabbro and a metarodingite preserves magmatic zoning patterns and trace element compositions. The zircon

Daniela Rubatto; Marco Scambelluri

2003-01-01

140

Alpe Arami: A Peridotite Massif from Depths of More Than 300 Kilometers  

Microsoft Academic Search

The abundance of FeTiO_3 and chromite precipitates in olivine of the Alpe Arami peridotite massif, Switzerland, requires a much higher solubility for highly charged cations than is found in mantle xenoliths from depth of 250 kilometers. Three previously unknown crystal structures of FeTiO_3 were identified that indicate that the originally exsolved phase was the high-pressure perovskite polymorph of ilmenite, implying

Larissa Dobrzhinetskaya; Harry W. Green II; Su Wang

1996-01-01

141

Inclusions in chrysolite from the Kovdor Massif: Genetic and gemmological significance  

Microsoft Academic Search

Gem-quality chrysolite (peridot) from a phlogopite deposit related to the Kovdor ultrabasic-alkaline massif in the Kola Peninsula,\\u000a Russia, was studied using a variety of techniques (optical mineralogical microscopy, chemical, Mössbauer spectroscopy, and\\u000a photoluminescence) to determine its chemical composition, the Fe2+\\/Fe3+ ratio, refraction indexes, density, as well as to examine inclusions in it. Much attention was devoted to the microprobe\\u000a identification

S. V. Sokolov; S. A. Yarmishko; N. I. Chistyakova

2006-01-01

142

Basement shear zones development and shortening kinematics in the Ecrins Massif, Western Alps  

NASA Astrophysics Data System (ADS)

In the Western Alps, Oligocene shortening affected a highly heterogeneous European crust with Liassic half-grabens inherited from the rifting stage and the finite deformation was strongly partitioned between the rigid basement and the weak Jurassic sediments. In the Ecrins Massif (Oisans, external crystalline massifs), where the half-grabens are best exposed and preserved, compressional structures within the basement have to date never been described in details. This massif was shortened under moderate metamorphic conditions (250-350°C and 0.1-0.5 GPa), and the rheological contrast between the basement and the cover is strong. While the sediments are intensely folded, the cover-basement interface presents apparent open folds underlined by the Lower Triassic layers. The basement itself shows a more localized deformation along several brittle-ductile shear zones. We here report new evidences of such brittle-ductile shear zones characterized by anastomosed phyllonitic shear bands rich in phengite and quartz, a low-strength material where strain has localized. New detailed maps of reverse shear zones, faults, schistosity, and stretching lineations in both the cover and the basement are provided. We show that the Oligocene crustal shortening was mainly E-W to ENE-WSW. Local N-S to NW-SE shortening occurred and was limited to the eastern border of the Ecrins Massif, around the Penninic Frontal Thrust, which likely was a sinistral transpressive structure in this area. Finally, new balanced cross sections show that these basement shear zones have accommodated more than 50% of the Oligocene crustal shortening.

Bellanger, M.; Bellahsen, N.; Jolivet, L.; Baudin, T.; Augier, R.; Boutoux, A.

2014-02-01

143

Geological mapping of the Rainbow Massif, Mid-Atlantic Ridge, 36°14'N  

Microsoft Academic Search

The Rainbow hydrothermal field at 36°14'N on the Mid-Atlantic Ridge is one of the few known sites hosted in ultramafic basement. The Rainbow Massif is located along the non-transform offset between the AMAR and South AMAR second-order ridge segments, and presents the characteristic dome morphology of oceanic core complexes, although no corrugated surface has been observed so far. One of

B. Ildefonse; Y. Fouquet; E. Hoisé; J. Dyment; P. Gente; R. Thibaud; D. Bissessur; V. Yatheesh

2008-01-01

144

COASTAL 2000 MONITORING IN THE NORTHEAST  

EPA Science Inventory

Coastal 2000 is a partnership between the U.S. Environmental Protection Agency and coastal states to develop a national coastal monitoring program. The Northeast portion of Coastal 2000 includes states from Delaware to Maine. This joint effort will provide a nationwide assessment...

145

Cruise Report PIRATA Northeast Extension 2013 &  

E-print Network

Cruise Report PIRATA Northeast Extension 2013 & AEROSE VIII NOAA Ship Ronald H. Brown RB1301) Cruise RB-13-01 was designed to: (1) collect a suite of oceanographic and meteorological observations/STAR), Ebony Roper and Mayra Oyola (Howard Univ.); Chris Spells (Hampton Univ.) Note: this cruise report

146

Teacher Morale in Rural Northeast Tennessee  

ERIC Educational Resources Information Center

The purpose of this quantitative study was to investigate the factors that influence the morale levels of teachers in the public school systems of 3 contiguous counties in rural northeast Tennessee. The level of teacher morale was measured using the Purdue Teacher Opinionaire. Data associated with the Tennessee Value-Added Assessment System…

Eggers, Brenda Dishman

2012-01-01

147

Stratigraphic Cross Section of Northeast Texas  

NSDL National Science Digital Library

Cretaceous sedimentary rocks of Northeast Texas provide important clues about paleogeography, paleotectonics, and sea level fluctuation. This website describes several of these rock units and the geologic information they supply. An unpublished report with a thorough discussion, map, cross section, and numerous references is provided. Specific topics include Cretaceous stratigraphy, lithostratigraphic and biostratigraphic correlation, ammonites, Western Interior Seaway, Skull Creek Seaway, paleogeography, and paleotectonics.

Minor Keith

148

Copper complexation in the Northeast Pacific  

Microsoft Academic Search

Copper titrations were conducted at sea with differential pulse anodic stripping voltammetry to examine the degree to which copper was associated with organic ligands. Greater than 99.7% of the total dissolved copper in surface waters of the central Northeast Pacific shallower than 200 m was estimated to be associated with strong organic complexes. Below 200 m, increasing proportions of inorganic

KENNETH H. COALE; KENNETH W. BRULAND

1988-01-01

149

Seasonal Weed Control for Northeast Florida  

E-print Network

1 Seasonal Weed Control for Northeast Florida #12;2 Introduction Weed control is a constant battle things you can do to reduce the economic impact of weeds. A healthy pasture has fewer weed problems. Soil to maintain a weed free pasture. Always use certi- fied seed to establish pastures and hay fields. Clean

Jawitz, James W.

150

First SHRIMP U Pb zircon dating of granulites from the Kontum massif (Vietnam) and tectonothermal implications  

NASA Astrophysics Data System (ADS)

The Kontum massif in Central Vietnam represents the largest continuous exposure of crystalline basement of the Indochina craton. The central Kontum massif is chiefly made of orthopyroxene granulites (enderbite, charnockite) and associated rocks of the Kannack complex. Mineral assemblages and geothermobarometric studies have shown that the Kannack complex has severely metamorphosed under granulite facies corresponding to P-T conditions of 800-850°C and 8±1 kbars. Twenty-three SHRIMP II U-Pb analyses of eighteen zircon grains separated from a granulite sample of the Kannack complex yield ca 254 Ma, and one analysis gives ca 1400 Ma concordant age for a zoned zircon core. This result shows that granulites of the Kannack complex in the Kontum massif have formed from a high-grade granulite facies tectonothermal event of Indosinian age (Triassic). The cooling history and subsequent exhumation of the Kannack complex during Indosinian times ranged from ˜850°C at ca 254 Ma to ˜300°C at 242 Ma, with an average cooling rate of ˜45°C/Ma.

Nam, Tran Ngoc; Sano, Yuji; Terada, Kentaro; Toriumi, Mitsuhiro; Van Quynh, Phan; Dung, Le Tien

2001-02-01

151

Re-Os isotopic evidence for a lower crustal origin of massif-type anorthosites  

PubMed

Massif-type anorthosites are large igneous complexes of Proterozoic age. They are almost monomineralic, representing vast accumulations of plagioclase with subordinate pyroxene or olivine and Fe-Ti oxides--the 930-Myr-old Rogaland anorthosite province in southwest Norway represents one of the youngest known expressions of such magmatism. The source of the magma and geodynamic setting of massif-type anorthosites remain long-standing controversies in Precambrian geology, with no consensus existing as to the nature of the parental magmas or whether these magmas primarily originate in the Earth's mantle or crust. At present, massif-type anorthosites are believed to have crystallized from either crustally contaminated mantle-derived melts that have fractionated olivine and pyroxenes at depth or primary aluminous gabbroic to jotunitic melts derived from the lower continental crust. Here we report rhenium and osmium isotopic data from the Rogaland anorthosite province that strongly support a lower crustal source for the parental magmas. There is no evidence of significantly older crust in southwest Scandinavia and models invoking crustal contamination of mantle-derived magmas fail to account for the isotopic data from the Rogaland province. Initial osmium and neodymium isotopic values testify to the melting of mafic source rocks in the lower crust with an age of 1,400-1,550 Myr. PMID:10866196

Schiellerup; Lambert; Prestvik; Robins; McBride; Larsen

2000-06-15

152

Geotectonics characteristics and their relation with gas-oil pool formation of the Dongsha fault-uplifted massif  

NASA Astrophysics Data System (ADS)

The Dongsha fault-uplifted massif (for convenience, Dongsha massif from here on) is located in the northern continental shelf-slope of the South China Sea, where the water depth is 100 400 m. The massif is considered to be a part of the large-scale fault-uplifted zone directed NE and separating the Pearl River Mouth Basin into northern and southern graben areas. The sedimentary cover of the Pearl River Mouth Graben consists mainly of a 7000 10000 m thick Tertiary system. A large-scale uplift occurred in the Dongsha fault-uplifted zone during Paleocene-Eocene, when the lower structural layer (lower Tertiary) existed only in the small depressions of the fault-uplifted zone. The formation and evolution of the Dongsha fault-uplifted zone could be divided into: 1) the base-ment formation stage (J2-K1); 2) the slowly uplifted stage (K2-E{2/2}; 3) the weathering and erosion stage (E{2/3}-E{3/1}) 4) the integrated subsidence stage (E{3/2}-N{1/2}) and 5) the last uplifted stage (N{1/3}-Q). The formation of the oil and gas pools of the Dongsha massif was obviously controlled by the formation and evolution of the massif. In the region of the massif, there are good reservoirs and caprocks, many channels for gas-oil migration, and a series of structural and organic reef traps. In addition, because the massif is higher than its adjacent depressions, it became a major place where the gas and oil concentrate from the surrounding depressions. All the above factors are favorable for the formation of large oil-gas pools in the Dongsha fault-uplifted zone.

Liu, Zhaoshu; Wei, Changxing; Zhao, Yan; Yang, Shukang; Chen, Senqiang

1992-09-01

153

Mapping of the Ronda peridotite massif (Spain) from AVIRIS spectro-imaging survey: A first attempt  

NASA Technical Reports Server (NTRS)

In both AVIRIS and ISM data, through the use of mixing models, geological boundaries of the Ronda massif are identified with respect to the surrounding rocks. We can also yield first-order vegetation maps. ISM and AVIRIS instruments give consistent results. On the basis of endmember fraction images, it is then possible to discard areas highly vegetated or not belonging to the peridotite massif. Within the remaining part of the mosaic, spectro-mixing analysis reveals spectral variations in the peridotite massif between the well-exposed areas. Spatially organized units are depicted, related to differences in the relative depth of the absorption band at 1 micron, and it may be due to a different pyroxene content. At this stage, it is worth noting that, although mineralogical variations observed in the rocks are at a sub-pixel scale for the airborne analysis, we see an emerging spatial pattern in the distribution of spectral variations across the massif which might be prevailingly related to mineralogy. Although it is known from fieldwork that the Ronda peridotite massif exhibits mineralogical variations at local scale in the content of pyroxene, and at regional scale in different mineral facies, ranging from garnet-, to spinel- to plagioclase-lherzolites, no attempt has been done yet to produce a synoptic map relating the two scales of analysis. The present work is a first attempt to reach this objective, though a lot more work is still required. In particular, for the purpose of mineralogical interpretation, it is critical to relate the airborne observation to field work and laboratory spectra of Ronda rocks already obtained, with the use of image endmembers and associated reference endmembers. Also, the pretty rough linear mixing model used here is taken as a 'black-box' process which does not necessarily apply correctly to the physical situation at the sub-pixel level. One may think of using the ground-truth observations bearing on the sub-pixel statistical characteristics (texture, structural pattern, surface distribution and vegetation contribution (grass,..)) to produce a more advanced mixing model, physically appropriate to the geologic and environmental contexts.

Pinet, P. C.; Chabrillat, S.; Ceuleneer, G.

1993-01-01

154

Geological mapping of the Rainbow Massif, Mid-Atlantic Ridge, 36°14'N  

NASA Astrophysics Data System (ADS)

The Rainbow hydrothermal field at 36°14'N on the Mid-Atlantic Ridge is one of the few known sites hosted in ultramafic basement. The Rainbow Massif is located along the non-transform offset between the AMAR and South AMAR second-order ridge segments, and presents the characteristic dome morphology of oceanic core complexes, although no corrugated surface has been observed so far. One of the objectives of Cruises MOMAR DREAM (July 2007, R/V Pourquoi Pas ?; Aug-Sept 2008, R/V Atalante) was to study the petrological and structural context of the hydrothermal system at the scale of the Rainbow Massif. Our geological sampling complements previous ones achieved during Cruises FLORES (1997) and IRIS (2001), and consisted in dredge hauls, and submersible dives by manned submersible Nautile and ROV Victor. The tectonics of the Rainbow Massif is dominated by a N-S trending fault pattern on the western flank of the massif, and a series of SW-NW ridges on its northeastern side. The active hydrothermal site is located in the area were these two systems crosscut. The most abundant recovered rock type is peridotite (harzburgite and dunite) that presents a variety of serpentinization styles and intensity, and a variety of deformation styles (commonly undeformed, sometimes displaying ductile or brittle foliations). Serpentinites are frequently oxidized. Some peridotite samples have melt impregnation textures. Massive chromitite was recovered in one dredge haul. Variously evolved gabbroic rocks were collected as discrete samples or as centimeter to decimeter-thick dikes in peridotites. Basalts and fresh basaltic glass were also sampled in talus and sediments on the southwestern and northeastern flanks of the massif. Our sampling is consistent with the lithological variability encountered in oceanic core complexes along the Mid-Atlantic Ridge and Southwest Indian Ridge. The stockwork of the hydrothermal system has been sampled on the western side of the present-day hydrothermal field, along N-S trending normal fault scarps, and within the talus underneath. It is made of massive sulfides, strongly altered serpentinites, and breccias containing elements of iron sulfide/oxide impregnated serpentinites. * K. Bukas, V. Cueff Gauchard, L. Durand, F. Gaill, C. Konn, F. Lartaud, N. Le Bris, G. Musset, A. Nunes, J. Renard, V. Riou, A. Tasiemski, P. Torres, I. Vojdani, M. Zbinden

Ildefonse, B.; Fouquet, Y.; Hoisé, E.; Dyment, J.; Gente, P.; Thibaud, R.; Bissessur, D.; Yatheesh, V.; Momardream 2008 Scientific Party*, T.

2008-12-01

155

Jurassic hot spring deposits of the Deseado Massif (Patagonia, Argentina): Characteristics and controls on regional distribution  

NASA Astrophysics Data System (ADS)

The Deseado Massif, Santa Cruz Province, Argentinean Patagonia, hosts numerous Middle to Late Jurassic age geothermal and epithermal features represented by siliceous and calcareous chemical precipitates from hot springs (sinters and travertines, respectively), hydrothermal breccias, quartz veins, and widespread hydrothermal silicification. They indicate pauses in explosive volcanic activity, marking the final stages in the evolution of an extensive Jurassic (ca. 178-151 Ma) volcanic complex set in a diffuse extensional back-arc setting heralding the opening of the Atlantic Ocean. Published paleo-hot spring sites for the Deseado Massif, plus additional sites identified during our recent field studies, reveal a total of 23 locations, five of which were studied in detail to determine their geologic and facies associations. They show structural, lithologic, textural and biotic similarities with Miocene to Recent hot spring systems from the Taupo and Coromandel volcanic zones, New Zealand, as well as with modern examples from Yellowstone National Park, U.S.A. These comparisons aid in the definition of facies assemblages for Deseado Massif deposits - proximal, middle apron and distal siliceous sinter and travertine terraces and mounds, with preservation of many types of stromatolitic fabrics - that likely were controlled by formation temperature, pH, hydrodynamics and fluid compositions. Locally the mapped hot spring deposits largely occur in association with reworked volcaniclastic lacustrine and/or fluvial sediments, silicic to intermediate lava domes, and hydrothermal mineralization, all of which are related to local and regional structural lineaments. Moreover, the numerous geothermal and significant epithermal (those with published minable resources) deposits of the Deseado Massif geological province mostly occur in four regional NNW and WNW hydrothermal-structural belts (Northwestern, Northern, Central, and Southern), defined here by alignment of five or more hot spring deposits and confirmed as structurally controlled by aeromagnetic data. The Northern and Northwestern belts, in particular, concentrate most of the geothermal and epithermal occurrences. Hence, Jurassic hydrothermal fluid flow was strongly influenced by the most dominant and long-active geological boundaries in the region, the outer limits of the Deseado Massif 'horst' itself.

Guido, Diego M.; Campbell, Kathleen A.

2011-06-01

156

Composition variations of accessory lamprophyllite in Lovozero massif: hidden layering of non-cumulus mineral.  

NASA Astrophysics Data System (ADS)

Composition variations of accessory lamprophyllite in Lovozero massif: hidden layering of non-cumulus mineral. Lovozero massif is a beautiful sample of layered agpaitic intrusion. Rhythmic modal layering is visible in mountainsides and drill-cores. Recently cryptic layering was found in composition of cumulus minerals: loparite (Kogarko et al., 2002), clinopyroxen (Kogarko, Williams, 2005, Zaitsev, Senin 2006) and eudialite (Kogarko, Williams, 2008). We studied chemical variation of lamprophyllite - a principal accessory mineral of eudialite lujavrites and porthyritic lujavrites of Lovozero massif. Three varieties of compositions discovered in rocks of Lovozero massif: Sr-lamprophyllite, contain <0.2 Ba and ~ 0.08 K(f.u), Ba-Sr lamprophyllite, contain 0.4-0.9 Ba and 0.10-0.20 K (f.u) and baritolamprophyllite, contain 1.4 and more f.u. Ba. Sr lamprophyllite is the most abounded. Sometimes it is corroded by the Ba-lamprophyllite. In crossection of eudialite lugavrite complex Fe content in Sr lamprophyllite increase and Ca content - decrease upward. In porphyritic lujavrites Sr lamprophyllite upward increase Mn content whereas Mg, Ca and Fe content decrease. Ba/Sr ratio does not show any tendency in both cases. Experimental study of lamprophyllite-nepheline diagram and melting of lamprophyllite group minerals show that paragenesys nepheline + lamprophyllite might exist below 833°C and lamprophyllite fractionation must increase Ba/Sr ratio in melt (Zaitsev et al., 2013). Lamprophyllite composition evolution inside one rock (namely from lamprophyllite to barytolamprophyllite) is in agreement with experimentally founded. From other hand, independence of Ba/Sr ration in lamprophyllite from the vertical position of sample shows that lamrophyllite wasn't cumulative mineral during crystallization of magma of Lovozero massif. From these data, features of lamprophyllite composition variations strictly locate they place in crystallization history as a crystallized from interstitial melt. Vertical variations of lamprophyllite composition is conform to variations of pyroxene composition: in clinopyroxen of differentiated and eudialite complex Na,Fe and Ti content increase upward and Ca, Mg - decrease (Kogarko Williams, 2005) in porphyritic lujavrites Na, Ti, Mn content increase and Ca, Mn - decrease (Zaitsev, Senin 2006). These patterns can be explained if we assume that at each level of the lamprophyllite crystallized from melt, equilibrated with pyroxene, formed primarily cumulative matrix of rocks. Thus, the composition of lamprophyllite changes systematically upwards because it inherits patterns composition of primary magmatic clinopyroxene.

Zaitsev, Victor; Kogarko, Lia

2014-05-01

157

Conditions of crystallization of the Ural platinum-bearing ultrabasic massifs: evidence from melt inclusions  

NASA Astrophysics Data System (ADS)

Conditions of the Ural platinum-bearing ultramafic massifs formation attract attention of numerous researchers. A most important peculiarity of such plutons is their dunite cores, to which commercial Pt deposits are related. There are a different opinions about genesis of these massifs and usual methods not always can solve this question. As a result of melt inclusions study in the Cr-spinel the new data on physical and chemical parameters of dunite crystallization of the Nizhnii Tagil platinum-bearing ulrabasic massif (Ural) was obtained. The comparative analysis of Cr-spinels, containing melt inclusions, has shown essential differences of these minerals from chromites of the ultrabasic ophiolite complexes and of modern oceanic crust. Contents of major chemical components in the heated and quenched melt inclusions are close to those in the picrite and this testifies dunite crystallization from ultrabasic (to 24 wt.% MgO) magma. On the variation diagrams for inclusions in Cr-spinel the following changes of chemical compositions are established: during SiO2 growth there is falling of FeO, MgO, and increase of CaO, Na2O contents. Values of TiO2, Al2O3, K2O and P2O5 remain as a whole constant. Comparing to the data on the melt inclusions in Cr-spinel from the Konder massif, we see that values of the most part of chemical components (SiO2, TiO2, K2O, P2O5) are actually overlapped. At the same time, for the Nizhnii Tagil platinum-bearing massif the big maintenances of FeO and CaO in inclusions are marked. Distinct dependence of the majority of components from the MgO content in inclusions is observed: values TiO2, Al2O3 FeO, CaO and Na2O fall at transition to more magnesia melts. On the peculiarities of distribution of petrochemical characteristics melt inclusions in considered Cr-spinels are co-ordinated with the data on evolution of compositions of melts and rocks of model stratified ultramafic plutons during their crystallization in the magmatic chambers. On the diagrams an association of melt inclusions with the data on inclusions in Cr-spinels from the Konder platinum-bearing and Karashat ophiolite massifs is clearly visible. Our computer simulations on the basis of melt inclusion compositions by the PETROLOG program package (Danyushevsky, Plechov, 2011) allowed to evaluate the crystallization temperature of dunites of the Nizhnii Tagil platinum-bearing massif in the intrusive chamber. The most part of olivine was formed from 1430 to 1360°C and continued to crystallize until to 1280°C. Cr-spinel crystallized from melts in the range of temperatures from 1345 to 1310°C. The investigations were supported by the Russian Foundation for Basic Research (project No 12-05-00959) and by Projects N 2.1 and N 50.

Simonov, Vladimir; Puchkov, Victor; Prikhod'ko, Vladimir; Stupakov, Sergey; Kotlyarov, Alexey

2013-04-01

158

Garzon Massif basement tectonics: A geopyhysical study, Upper Magdalena Valley, Colombia  

NASA Astrophysics Data System (ADS)

The mechanics and kinematics of basement tectonic uplifts, such as the Laramide Rocky Mountain orogeny, remain poorly understood and controversial. The debate continues in part because of the limited number of well-documented present day analogs. The Garzon Massif rising between the Upper Magdalena Valley and the Llanos Basin of Colombia is an active basement uplift with well, seismic, gravity, and magnetic data available. In the past 10 Ma, PreCambrian age granitic rocks of the Garzon Massif have been uplifted and displaced against Cretaceous and Tertiary sediments of the Upper Magdalena Valley along the Garzon fault. Aerogravimetric data calibrated by well data and 2D seismic data were used to model the geometry of the Garzon fault and the top of basement (Saldana Fm) in 2 dimensions. The density models provide an independent estimate of fault orientation. A high density airborne gravity and magnetic survey were flown over the Garzon fault in 2000, including 2,663 line km along 1 x 5 and 1 x 4 km flight lines at elevations of 2564 and 4589 m above mean sea level. An initial depth model was derived from the well logs, seismic reflection profile, and down-hole velocity surveys. Airborne gravity data was used to produce a Bouguer anomaly gravity map. Average rock densities were estimated from density logs, seismic velocities, and formation rock types. The regional gravity field was estimated and 2-dimensional forward models were constructed with average densities from the wells, seismic velocities, and rock types, and the initial depth model. Since the model fit is dependent on the density assumed for the Garzon Massif rocks, multiple densities and dip angles were tested. The gravity analysis indicates that the Garzon fault is a basement thrust fault dipping at a shallow angle under the Massif. Best-fit models show a true dip of 12 to 17 degrees to the southeast. A regional density and magnetic susceptibility model of the entire Massif is consistent with dense basement rocks throughout the Garzon Massif and asymmetric loading (sedimentary basin is much deeper on NW flank -- Upper Magdalena Valley). Crust thickens to the NW toward the Central Cordillera. Euler deconvolution of the magnetic field shows pronounced NE-SW trending features under the Massif which are interpreted as faults bounding a possible pre-Cambrian sedimentary rift graben. Retrodeformed 2D regional models indicate 13 km of shortening on the Garzon basement thrust in the last 12 Ma. Approximately 9 km of shortening occurred on the SE marginal basement thrust fault, probably also in the last 12 Ma. This was preceded by approximately 43 km of shortening by thin-skinned imbricate thrusting to the southeast (12 - 25 Ma). This study provides a well-documented example of an active basement uplift on low angle thrust faults.

Bakioglu, Kadir Baris

159

Amphibole genesis in pyroxenites from the Beni Bousera peridotite massif (Rif, Morocco): Evidence for two different metasomatic episodes  

NASA Astrophysics Data System (ADS)

The presence of variable amounts of amphibole ± phlogopite in a garnet websterite and a garnet clinopyroxenite from the Beni Bousera peridotite massif provides evidence for post-formation metasomatism. Textural observations associated with major- and trace-element mineral compositions allowed us to distinguish two metasomatic episodes, which occurred at different stages of the Beni Bousera massif evolution. The garnet websterite has recorded interaction with LREE-rich silicate melts before the uplift of the massif. Amphibole/clinopyroxene and amphibole/garnet trace-element ratios closely approach partition coefficient values, indicating that chemical equilibrium was attained between amphibole and pyroxenite matrix minerals. The geochemical signatures of the putative alkaline interacting melts are similar to those of recent basaltic magmas erupted in Morocco, suggesting a common peridotite mantle source. In contrast, amphibole from the garnet clinopyroxenite is in chemical disequilibrium with the pyroxenite matrix minerals. In this clinopyroxenite the crystallization of amphibole and plagioclase occurred at lower T (and P) conditions, most probably during the ascent of the Beni Bousera massif and its emplacement into the crust. The melt responsible for this later metasomatic episode was LREE-depleted and HREE-enriched, suggesting that it resulted from decompression melting of a garnet-bearing source (with garnet as a melting phase), similar to the garnet-bearing pyroxenites outcropping in the Beni Bousera massif.

El Atrassi, Fatima; Chazot, Gilles; Brunet, Fabrice; Chopin, Christian; Bouybaouene, Mohamed

2014-11-01

160

Structural Pattern, P-t Conditions and Timing of Alpine Deformation In The Argentera Massif (western Alps)  

NASA Astrophysics Data System (ADS)

The Argentera massif is located in the southern part of the Western Alps and belongs to the paleo-European basement. It forms the southernmost crystalline massif of the external domain. Hercynian high-grade metamorphic rocks and Carboniferous sedi- mentary basins were intruded at the end of the Hercynian orogen by the calc-alkaline Argentera granite. This massif experienced a polyphase deformation history, Hercy- nian and Alpine. The Alpine history is characterized by the development of a network of NNW-SSE trending transcurrent dextral ductile shear zones branching into E-W ductile thrust faults with a top to the south displacement. We interpret the uplift of the massif as the result of movements along these shear zones, relative to a sub-meridian compressional event. Our P-T condition estimates indicate a regional temperature at ca 350 rC for pressure at 0.35-0.4 GPa for Alpine metamorphism implying a mini- mum burial of 14 km for the Argentera massif. 39Ar-40Ar analyses of neo-crystallized phengites collected within a major E-W alpine crosscutting the late Hercynian Argen- tera granite shear zone (Frema Morte) yielded an age at ca 22.5 Ma. This is the first absolute age constraint of a late Alpine metamorphism in the external crystalline mas- sifs of the Western Alps. This metamorphism could result from overload imposed by thrusting of the internal nappes between 28 Ma and 22.5 Ma.

Corsini, M.; Caby, R.; Ruffet, G.

161

Time series of the northeast Pacific  

NASA Astrophysics Data System (ADS)

In July 2006, the North Pacific Marine Science Organization (PICES) and Fisheries & Oceans Canada sponsored the symposium “Time Series of the Northeast Pacific: A symposium to mark the 50th anniversary of Line P”. The symposium, which celebrated 50 years of oceanography along Line P and at Ocean Station Papa (OSP), explored the scientific value of the Line P and other long oceanographic time series of the northeast Pacific (NEP). Overviews of the principal NEP time-series were presented, which facilitated regional comparisons and promoted interaction and exchange of information among investigators working in the NEP. More than 80 scientists from 8 countries attended the symposium. This introductory essay is a brief overview of the symposium and the 10 papers that were selected for this special issue of Progress in Oceanography.

Peña, M. Angelica; Bograd, Steven J.

2007-10-01

162

Predictability of north-east Brazil droughts  

Microsoft Academic Search

The droughts of north-east Brazil are unusually well defined in the departures of the quasi-permanent circulation systems in the tropical Atlantic sector. Anomaly patterns in the large-scale atmospheric and oceanic fields evolve in the course of the half-year preceding the March\\/April rainy season. Based on these diagnostic results, dynamically plausible predictor candidates are selected and entered into a stepwise multiple

Stefan Hastenrath

1984-01-01

163

On climate variability in Northeast of Brazil  

Microsoft Academic Search

The time-series (annual period and dry- and wet-season) of eight climatic variables were analysed to ascertain the existence of climate variability in Northeast of Brazil. Results indicated generally increasing trends in most of these variables (statistically significant at p<0.01 or <0.05) by Mann–Kendall test. However, relative humidity and rainfall presented decreasing behavior. The study showed that most of the stations

Vicente de Paulo Rodrigues da Silva

2004-01-01

164

Northeast Regional Carbon Sequestration Partnership Investigation  

NASA Astrophysics Data System (ADS)

Geologic carbon storage is a viable option for the electric power industry in the "Northeast" region to meet regional and forthcoming federal CO2 cap-and-trade programs. Capturing CO2 emissions and storing the gas in underground geological formations could significantly reduce the amount of CO2 released to the atmosphere. However, before this can be implemented, site-specific geological research needs to be conducted to determine which formations are potentially capable of storing the quantity of CO2 emitted by power plants in the Northeast region. While the target geosequestration formations in the Northeast may have less storage capacity than those in the Midwest, Southeast or Southwest, the available capacities may be large enough to sequester a significant fraction of the CO2 produced by some regional power plants (which are also smaller, individually and in total, than those in the other regions). The study will also conduct baseline assessments of electric power producer plants and CO2 emission estimates and create first level screening on potential geologic structures for CO2 sequestration. The work will establish a general database of "Other Uses" (current industrial and technological innovations/options), characterize transport issues, both on land and offshore, and, provide general guidance on the physical and land-use constraint factors of "add-on" capture technologies at existing power plants.

Coleman, A. J.; Trautz, R. C.

2008-12-01

165

Nepheline syenites and related magmatic fluids in the Ditr u Alkaline Massif, Transylvania, Romania Andrs Fall *, Robert J. Bodnar and Csaba Szab  

E-print Network

Nepheline syenites and related magmatic fluids in the Ditr u Alkaline Massif, Transylvania, Romania at the northern end, and undersaturated alkaline rocks (nepheline syenites) predominating in the central and eastern margin of the massif. The nepheline syenite is a coarse- to medium-grained rock that occurs

Bodnar, Robert J.

166

Miocene incorporation of peridotite into the Hercynian basement of the Maghrebides (Edough massif, NE Algeria): Implications for the geodynamic evolution of the  

E-print Network

Miocene incorporation of peridotite into the Hercynian basement of the Maghrebides (Edough massif Keywords: Peridotite Western Mediterranean Monazite U­Pb geochronology Laser ablation A laser ablation ICP a leucocratic diatexite collected in close proximity to a small peridotite massif incorporated into the lower

Demouchy, Sylvie

167

Genesis of platinum-bearing ultrabasic massifs in the plutonic chambers: evidence from melt inclusions  

NASA Astrophysics Data System (ADS)

Platinum-bearing ultramafic massifs occur as bodies of concentrically zonal inner structures due to the successive replacement of dunite with pyroxenite and gabbro from their cores to margins. A most important peculiarity of such massifs is their dunite cores, to which commercial Pt deposits are related. There are a different opinions about genesis of these massifs and geological, petrological, geochemical methods not always can solve this question. We found melt inclusions in Cr-spinel from dunites of the platinum-bearing Konder and Inagli massifs (Siberian Platform) and this provides direct evidence of the participation of magmatic systems in the crystallization of ultrabasic rocks. Contents of most major chemical components in the heated and quenched melt inclusions are close to those in biotite-pyroxene picrite and this testifies dunite crystallization from ultrabasic alkaline magma. Ion probe analyses of melt inclusions in Cr-spinel yielded relatively high water concentration in ultrabasic melts of the Konder (0.45-0.53 wt %) and Inagli (up to 0.63 wt %) massifs. These data are generally close to the water contents in magma that produced dunites of ophiolites (0.58-0.65 wt %) (Simonov et al., 2009). The REE patterns of inclusions in Cr-spinel from the Konder and Inagli dunites show a pronounced negative slope with strong enrichment of LREE relative to HREE, as is typical of plume-related magmatic systems of oceanic islands and continental hotspots. The values of such indicator ratios as Nb/U (23.4), Zr/Nb (7.20), and Th/U (3.0) of inclusions practically exactly coincide with those of glasses from areas of continental hotspots (Naumov et al., 2010). At the Nb/Y-Zr/Y diagram the data points of the inclusions plot within the field of melts with a plume source. As a whole the patterns of trace elements and REE in melt inclusions in the Cr-spinel provide evidence that mantle plumes affected the magmatic events, that produced dunites of the studied platinum-bearing ultramafic massifs. Our simulations on the basis of melt inclusion compositions by the PLUTON program package (Lavrenchuk, 2004) allowed to evaluate the crystallization temperature of dunites in the intrusive chambers. The most part of olivine was crystallized at 1460-1300°C and then, when the melt became less magnesian, this mineral continued to crystallize until to 1230°. The parameters evaluated with the help of another program (PETROLOG; Danyushevsky, 2001), based on data on melt inclusions, indicate that minimum temperature of the melts, from which olivine crystallized, was approximately 1230°. The model melt compositions (PLUTON program) are in good agreement with data on inclusions in Cr-spinel. For example, the calculated melt composition with 25.5 wt % MgO corresponds to 2.82 wt % 2, respectively, and melt inclusions with the same MgO (25.7 wt %) contain practically exactly coinciding K2O concentration of 2.7 wt %.

Simonov, V.; Prikhod'ko, V.

2012-04-01

168

Geological structures and geochronology of the Gonam Complex in the Gyeonggi Massif, South Korea  

NASA Astrophysics Data System (ADS)

Geological structures and geochronology of the Gonam Complex in the Gyeonggi Massif, South Korea You Hong Kihm and Sung Won Kim The Gonam complex is exposed in the westernmost part of the Gyeonggi Massif, which is recently thought be related with Triassic collision of China. This complex consists of various lithologies such as quartz schist, mica schist, quartzite, marble, leucocratic granite, mafic dyke and alkali granite. The Gonam complex can be divided into three units from south to north. The first is dominated by alternation of quartz schist and mica schist, which are intruded by leucocratic granites and mafic dykes. The second unit is highly sheared and folded quartzite. The last unit is composed of schists and marble intruded by acidic dykes, mafic dykes and foliated syenite. The deformation of the Gonam complex is characterized by one ductile shearing, two generations of folding, and four generations of faulting. The most prominent geological structures developed in the Gonam Complex are ductile structures, such as mylonitic foliations, mineral stretching lineations, sheath folds and oblique folds. At most outcrops the Gonam Complex was strongly sheared and intruded by amphibolitic dykes and leucocratic granites, which are also sheared. Widely developed mylonite indicates the ductile shearing occurred in high temperature metamorphic condition. SHRIMP zircon ages of detrital zircons obtained from schist and quartzite range from 3313 to 1819 Ma indicating the Gonam Complex deposited after Paleoproterozoic. Intrusion ages of foliated leucocratic granite, mafic dyke and foliated syenite are 821 Ma, 812 Ma and 751 Ma, respectively. And massive mafic dyke, syenite and two-mica granite (232~228 Ma) are interpreted as post-collisional igneous activity. These events are similar to those of Qinling-Dabie Belt and suggest that the Gyeonggi Massif is probably correlated to the Qinling-Dabie Belt.

Kihm, You Hong; Kim, Sung Won

2013-04-01

169

Catalog of Apollo 17 rocks. Volume 1: Stations 2 and 3 (South Massif)  

NASA Technical Reports Server (NTRS)

The Catalog of Apollo 17 Rocks is a set of volumes that characterize each of 334 individually numbered rock samples (79 larger than 100 g) in the Apollo 17 collection, showing what each sample is and what is known about it. Unconsolidated regolith samples are not included. The catalog is intended to be used by both researchers requiring sample allocations and a broad audience interested in Apollo 17 rocks. The volumes are arranged geographically, with separate volumes for the South Massif and Light Mantle, the North Massif, and two volumes for the mare plains. Within each volume, the samples are arranged in numerical order, closely corresponding with the sample collection stations. The present volume, for the South Massif and Light Mantle, describes the 55 individual rock fragments collected at Stations two, two-A, three, and LRV-five. Some were chipped from boulders, others collected as individual rocks, some by raking, and a few by picking from the soil in the processing laboratory. Information on sample collection, petrography, chemistry, stable and radiogenic isotopes, rock surface characteristics, physical properties, and curatorial processing is summarized and referenced as far as it is known up to early 1992. The intention has been to be comprehensive: to include all published studies of any kind that provide information on the sample, as well as some unpublished information. References which are primarily bulk interpretations of existing data or mere lists of samples are not generally included. Foreign language journals were not scrutinized, but little data appears to have been published only in such journals. We have attempted to be consistent in format across all of the volumes, and have used a common reference list that appears in all volumes. Where possible, ages based on Sr and Ar isotopes have been recalculated using the 'new' decay constants recommended by Steiger and Jager; however, in many of the reproduced diagrams the ages correspond with the 'old' decay constants. In this volume, mg' or Mg' = atomic Mg/(Mg +Fe).

Ryder, Graham

1993-01-01

170

Mantle refertilization by garnet pyroxenite melts: Evidence from the Ronda peridotite massif, southern Spain  

NASA Astrophysics Data System (ADS)

Lherzolite at the recrystallization front of the Ronda peridotite massif, a mantle region that experienced pervasive melt migration and melt/rock reaction, hosts pyroxenite composite layers that show an inner transition from Al- to Cr-rich compositions. These particular pyroxenite-peridotite associations record intense processes of pyroxenite melting/replacement and related peridotite refertilization. Al-rich spinel websterite in a composite layer close to the front was generated by melting of former garnet pyroxenite with an evident imprint of primary plagioclase and reaction of this protolith with incoming peridotite melt. These events produced more refractory major element compositions of whole-rock and higher REE contents in clinopyroxene but preserved the characteristic MREE/HREE fractionation and positive Eu anomaly of the garnet pyroxenite protolith. In the waning stages of melt porous flow at the recrystallization front, the parental melts of Cr-rich pyroxenite progressively replaced residual Al-rich spinel websterite partially conserving their original subduction-related affinity. Lherzolite hosting the composite layer was intensely refertilized by melt resulted from garnet pyroxenite replacement. The presence in the refertilizing agent of an important component extracted from garnet pyroxenite induced Eu and Sr positive anomalies, higher FeO* at similar SiO2 and higher Sm/Yb in these mantle rocks compared to common peridotite from the Ronda massif. Some peculiar geochemical signatures of garnet pyroxenite were thus imparted to highly fertile lherzolite hosting the pyroxenite composite layer by partial melting, melt migration and melt/rock reaction in the Ronda massif. These mechanisms may explain the presence of a garnet pyroxenite component in the source of different types of melt generated in the mantle. However, the efficiency of these processes in transferring the geochemical imprint of garnet pyroxenite to extruded lavas depends on the reactivity of the pyroxenite melt with enclosing peridotite, which may be controlled by prior refertilization reactions similar to those experienced by lherzolite close to the pyroxenite composite layer in Ronda.

Marchesi, C.; Garrido, C.; Bosch, D.; Bodinier, J.; Gervilla, F.

2011-12-01

171

The 1897 Shillong earthquake, northeast India: A new perspective on its seismotectonics and earthquake history  

NASA Astrophysics Data System (ADS)

The 1897 Shillong earthquake, northeast India is considered to be one of the largest in modern history. Oldham's memoir on this event widely considered as a classic treatise opened new vistas in observational seismology; many questions on the associated faulting mechanisms however remain unresolved. While most previous studies have suggested that the earthquake originated on a gentle north-dipping thrust that is considered to be associated with the Himalayan tectonics, a recent geodetic model by Bilham and England (2001) invokes a steep, south-dipping reverse fault, close to the northern topographic edge of the Shillong Plateau. This model, derived mostly from extant triangulation records, deviates from the conventional understanding of the faulting mechanism of this earthquake. Here, we interpret the available database on seismotectonics of the region and coseismic deformation associated with the 1897 earthquake, together with independent geomorphologic observations, to further understand the nature of faulting. Our interpretation of the morphologic features and coseismic level changes in the Brahmaputra valley, well logs, Bouguer gravity and earthquake data are consistent with a major, steep south-dipping fault, but it spatially conforms to the extreme northern margin of the Shillong massif, which occasionally outcrops on the northern bank of the Brahmaputra River. Our analysis of historical, archaeological and geological data implies a possible 1000-year-interval between the 1897 earthquake and its predecessor and we identify the northern boundary fault (named here as the Brahmaputra fault) as historically more active among other potential faults in the region. The overall tectonic scenario also indicates the critical role of the Brahmaputra in the progressive denudation of the northern plateau margin compared to its southern part (Dauki fault) and its impact on the seismotectonic processes associated with plateau uplift.

Rajendran, C.; Rajendran, K.

2003-12-01

172

Geochemical characteristics of rare earth elements in soil of the Ditru Massif, Eastern Carpathians, Romania  

NASA Astrophysics Data System (ADS)

The present paper describes the level of rare earth elements in soils developed from Ditr?u massif area for evaluating of the background of these elements and accurate assessment of environmental impact. Also this paper contributed to understanding the important role of parent rocks in pedogenic processes. The Ditr?u Alkaline Massif represent an intrusion body with a internal zonal structure, which was emplaced into pre-Alpine metamorphic rocks of the Bucovinian nappe complex close the Neogene - Quaternary volcanic arc of the Calimani-Guurghiu- Harghita Mountain chain. The center of massif was formed by nepheline syenite, which is surrounded by syenite and monazonite. North-western and north-eastern marginal sectors are composed of hornblende gabbro/hornblendite, alkali diorite, monzodiorite, monzosyenites and alkali granite. Small discrete ultramafic bodies (kaersutite-bearing peridotite, olivine, pyroxenite and hornblendite) and alkali gabbros occur in the Jolotca area. All this rocks are cut by late-stage dykes with a large variety of composition including tinguaite, phonolite, nepheline syenite, microsyenite, and aplite. The types of soils predominant in this zone are lithosoils. These soils are shallow developed, have low content in organic matter and reflects mineralogical and geochemical composition of the bedrock. The soil samples were collected from 70 location for all type of representative rocks (approximately 10 soil sampling points for each type of rock). The samples were analyzed by inductively coupled plasma mass spectrometry (ICP-MS). The pH values of these samples varied from 3.6 to 7.3, in general, the soils from massif area are acid or weakly acidic. The pH controls the abundance of REE in soil, the concentration of REE increases with decreasing pH values. In soil samples analyzed the contents of REE follow the order: Ce > La > Nd > Pr > Sm > Eu > Gd > Dy > Yb > Er > Tb > Ho >Tm. ? REE varied from 52.59 ?g g-1 to 579.2 ?g g-1 , the average is 273.14 ?g g-1. The chemical analysis of soil showed an enrichment in LREE (from La to Eu) and a depletion in HREE (from Gd to Lu). Relatively high levels of LREE concentration in soil are genetically associated with REE mineralization. The soil samples developed on the syenite and nephelin syenite are enriched in HREE. The REE chondrite - normalized plots showed for most soils in the sampling area strongly negative anomalies for cerium and europium, positive anomalies for gadolinium and dysprosium. The distribution of REE in soil is given and controlled by the presence of primary minerals (potasic and plagioclase feldspars) and accessory minerals (zircon, monazite, titanite, allanite, apatite, xenotime, thorite, bastnäsite) in bedrock.

Ion, Adriana

2013-04-01

173

La démocratisation de l'enseignement supérieur au Canada: la face cachée de la massification.  

PubMed

The increase in available student placements at colleges and universities, the implementation of provincial and federal postsecondary education policies, and the rise of the educational aspirations of families and individuals have all led to the massification of Canadian higher education. Based on Merle's typology of the forms of democratization, this article attempts to revisit the theory of equality of opportunities by critically analyzing the link between massification of higher education and social equity. The results of an analysis of longitudinal data from the (YIT) Youth in Transition Survey show that at the age of 24 in 2008, approximately 77% of young Canadians have pursued studies in a college or university. If access to postsecondary education is now higher, to what extent has it improved social equity? The article shows, in light of the Merle's typology, that mass university education is achieved in part under the seal of a segregative democratization, while college education tends to be egalitarian. L'augmentation de la capacité d'accueil des collèges et des universités, la mise en œuvre de politiques provinciales et fédérales de développement de l'enseignement postsecondaire et la montée des aspirations scolaires des familles et des individus ont contribué à massifier l'enseignement supérieur canadien. En se basant sur la typologie des formes de démocratisation de Merle, le présent article tente de revisiter la théorie de l'égalité des chances en s'interrogeant sur le lien entre la massification de l'enseignement supérieur et l'équité sociale. Les résultats obtenus à partir de données longitudinales provenant de l'Enquête auprès de jeunes en transition (EJET) montrent qu'à l'âge de 24 ans en 2008, environ 77 % des jeunes Canadiens ont poursuivi des études dans un collège ou une université. Si l'accès aux études postsecondaires est aujourd'hui plus élevé, dans quelle mesure celui-ci a-t-il amélioré l'équité sociale? L'article montre, à la lumière de la typologie de Merle, que la massification de l'enseignement universitaire se réalise en partie sous le sceau d'une démocratisation ségrégative, tandis que l'enseignement collégial a tendance à être égalisateur. PMID:25737464

Kamanzi, Pierre Canisius; Doray, Pierre

2015-02-01

174

Geology, petrology and isotope geochemistry of massif-type anorthosites from southwest Madagascar  

Microsoft Academic Search

Four massif-type anorthosite bodies 25–100?km2 in area occur within high-pressure granulite facies supracrustal gneisses in southwestern Madagascar. Two of these bodies\\u000a (Ankafotia and Saririaky) appear to have been pulled apart by 40?km in a ductile shear zone, but structural features such\\u000a as sub-vertical stretching lineations indicate an origin by intense west-directed flattening and pure shear. Country rocks\\u000a (Graphite Series) include

Lewis D. Ashwal; Michael A. Hamilton; Vincent P. I. Morel; Roger A. Rambeloson

1998-01-01

175

Alpine thermal and structural evolution of the highest external crystalline massif: The Mont Blanc  

NASA Astrophysics Data System (ADS)

The alpine structural evolution of the Mont Blanc, highest point of the Alps (4810 m), and of the surrounding area has been reexamined. The Mont Blanc and the Aiguilles Rouges external crystalline massifs are windows of Variscan basement within the Penninic and Helvetic nappes. New structural, 40Ar/39Ar, and fission track data combined with a compilation of earlier P-T estimates and geochronological data give constraints on the amount and timing of the Mont Blanc and Aiguilles Rouges massifs exhumation. Alpine exhumation of the Aiguilles Rouges was limited to the thickness of the overlying nappes (˜10 km), while rocks now outcropping in the Mont Blanc have been exhumed from 15 to 20 km depth. Uplift of the two massifs started ˜22 Myr ago, probably above an incipient thrust: the Alpine sole thrust. At ˜12 Ma, the NE-SW trending Mont Blanc shear zone (MBsz) initiated. It is a major steep reverse fault with a dextral component, whose existence has been overlooked by most authors, that brings the Mont Blanc above the Aiguilles Rouges. Total vertical throw on the MBsz is estimated to be between 4 and 8 km. Fission track data suggest that relative motion between the Aiguilles Rouges and the Mont Blanc stopped ˜4 Myr ago. Since that time, uplift of the Mont Blanc has mostly taken place along the Mont Blanc back thrust, a steep north dipping fault bounding the southern flank of the range. The "European roof" is located where the back thrust intersects the MBsz. Uplift of the Mont Blanc and Aiguilles Rouges occurred toward the end of motion on the Helvetic basal décollement (HBD) at the base of the Helvetic nappes but is coeval with the Jura thin-skinned belt. Northwestward thrusting and uplift of the external crystalline massifs above the Alpine sole thrust deformed the overlying Helvetic nappes and formed a backstop, inducing the formation of the Jura arc. In that part of the external Alps, ˜NW-SE shortening with minor dextral NE-SW motions appears to have been continuous from ˜22 Ma until at least ˜4 Ma but may be still active today. A sequential history of the alpine structural evolution of the units now outcropping NW of the Pennine thrust is proposed.

Leloup, P. H.; Arnaud, N.; Sobel, E. R.; Lacassin, R.

2005-08-01

176

Deglaciation and post-glacial environmental evolution in the Western Massif of Picos de Europa  

NASA Astrophysics Data System (ADS)

This study examines the process of deglaciation of the Western Massif of Picos de Europa through field work, geomorphological mapping, sedimentary records and absolute datings of 14C. This massif has several peaks over 2,400 m a.s.l. (Peña Santa de Castilla, 2,596 m; Torre Santa María, 2,486 m; Torre del Mediu, 2,467 m). It is composed mainly by Carboniferous limestones. This area has been intensively affected by karstic dissolution, Quaternary glaciers and fluvio-torrential processes (Miotke, 1968; Moreno et al, 2010; Ruiz-Fernández et al, 2009; Ruiz-Fernández, 2013). At present day, periglacial processes are active at the highest elevations (Ruiz-Fernández, 2013). We have identified four main glacial stages regarding the deglaciation of the massif: (i) maximum advance corresponding to the Last Glaciation, (ii) retreat and stabilization after the maximum advance, (iii) Late Glacial, and (iv) Little Ice Age. Sedimentological studies also contribute data to the understanding of the chronological framework of these environmental changes. The datings of the bottom sediments in two long sequences (8 and 5.4 m) provided a minimum age of 18,075 ± 425 cal BP for the maximum advance stage and 11,150 ± 900 cal BP for retreat and stabilization in the phase following the maximum advance. The ongoing analyses of these sequences at very high resolution will provide new knowledge about the environmental conditions prevailing since the deglaciation of the massif. References Miotke, F.D. (1968). Karstmorphologische studien in der glazial-überformten Höhenstufe der Picos de Europa, Nordspanien. Hannover, Selbtverlag der Geografischen Gessellschaft, 161 pp. Moreno, A., Valero, B.L., Jiménez, M., Domínguez, M.J., Mata, M.P., Navas, A., González, P., Stoll, H., Farias, P., Morellón, M., Corella, J.P. & Rico, M. (2010). The last deglaciation in the Picos de Europa National Park (Cantabrian Mountains, Northern Spain). Journal of Quaternary Science, 25 (7), 1076-1091. Ruiz-Fernández, J. (2013). Las formas de modelado glaciar, periglaciar y fluviotorrencial del Macizo Occidental de los Picos de Europa (Cordillera Cantábrica). Unpublished PhD Thesis, University of Oviedo, 314 pp. Ruiz-Fernández, J., Poblete. M.A., Serrano, P., Martí, C. & García-Ruiz, J.M. (2009). Morphometry of glacial cirques in the Cantabrian Range (Northwest Spain). Zeitschrift für Geomorphologie N. F., 53, 47-68.

Ruiz-Fernández, Jesús; Oliva, Marc; García, Cristina; López-Sáez, José Antonio; Gallinar, David; Geraldes, Miguel

2014-05-01

177

Spatial distribution of quartz recrystallization microstructures across the Aar massif (Swiss Central Alps)  

NASA Astrophysics Data System (ADS)

In the Aar massif, main foliation and major deformation structures were developed during NW-SE compression associated with the Alpine orogeny (Steck 1968). To be precise, shearing at the brittle to ductile transition may have initiated at different stages between 22-20 Ma and 14-12 Ma, followed by purely brittle deformation at around 10 Ma (Rolland et al. 2009). In light of the onset of dynamic recrystallization in quartz, Bambauer et al. (2009) defined a quartz recrystallization isograd in the northern part of the Aar massif. To the south, the grain size of recrystallized grains increases due to an increase of metamorphic temperatures from N to S. The aim of the current project is to carry out quantitative analysis on changes of the dynamic and static recrystallization behavior of quartz. Across the Aar massif, two general types of microstructures have to be discriminated: (i) weakly to moderately deformed host rocks and (ii) intensely deformed mylonites to ultramylonites out of high strain shear zones. In (i), volume fraction and size of recrystallized quartz grains increase towards the S showing grain size changes from around 5 µm up to ca. 200 µm. Southern microstructures are characterized by complete recrystallization. In terms of recrystallization processes, a transition from bulging recrystallization in the N to subgrain rotation recrystallization in the S occurs. Such a change in dynamic recrystallization processes combined with a grain size increase points towards reduced differential stresses with increasing temperature. This temperature gradient is also corroborated by a switch in the active glide systems in quartz from basal to rhomb dominated glide. In contrast to the granitic host rocks, the mylonites and ultramylonites (ii) show smaller recrystallized grain sizes due to enhanced strain rates. However, they also reveal a general increase of recrystallized grain sizes from N to S. In the S, microstructures from (i) and (ii) show equidimensional grains with 120° triple junctions and straight grain boundaries. Such microstructures are typical for static annealing. For that reason, we propose a post-deformational temperature pulse mainly affecting the southern part of the Aar massif. This annealing stage might correlate with the fluid pulse between 12-10 Ma suggested by Challandes et al. (2008). We will present constraints on the grade of deformation based on grain size data and CPO analyses, supporting the hypothesis that various deformation stages are well preserved in statically recrystallized structures.

Peters, M.; Herwegh, M.

2012-04-01

178

Une complication rare des léiomyomes utérins: hémopéritoine massif par rupture de varices  

PubMed Central

Les léiomyomes utérins sont des causes exceptionnelles d'hémopéritoine. Nous rapportons ici le cas d'une femme de 46 ans nullipare, en instance d'une hystérectomie totale indiquée pour utérus polymyomateux symptomatique. Elle a été opérée en urgence pour hémopéritoine aigu et massif compliqué de choc hémorragique. L'origine de l'hémopéritoine était la rupture spontanée d'une varice du léiomyome. Quoique rare l'éventualité d'un hémopéritoine causé par un fibrome utérin devrait être évoquée devant tout abdomen aigu spontané chez une femme en âge de procréer. La présence de varices sur les fibromes augmenterait le risque d'hémorragie spontanée. PMID:23717724

Ymele, Florent Fouelifack; Tsuala, Jovanny Fouogue; Fouedjio, Jeanne Hortence; Nangué, Charlette; De Kayo, Caroline Kayo; Dobgima, Pisoh Walter; Mbu, Robinson Enoh

2013-01-01

179

VIEW OF NOS. 217 AND 219 WASHINGTON AVENUE LOOKING NORTHEAST, ...  

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

VIEW OF NOS. 217 AND 219 WASHINGTON AVENUE LOOKING NORTHEAST, SHOWING WEST FACADES - Apollo Iron & Steel Works, Company Housing, West of Washington & Lincoln Avenues, Vandergrift, Westmoreland County, PA

180

OBLIQUE PERSPECTIVE OF MAIN ENTRANCE LOOKING NORTHEAST New York ...  

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

OBLIQUE PERSPECTIVE OF MAIN ENTRANCE LOOKING NORTHEAST - New York State Soldiers & Sailors Home, Dining Hall, Department of Veterans Affairs Medical Center, 76 Veterans Avenue, Bath, Steuben County, NY

181

10. VIEW, LOOKING NORTHEAST, OF MAIN LOBBY, FIRST FLOOR, SHOWING ...  

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

10. VIEW, LOOKING NORTHEAST, OF MAIN LOBBY, FIRST FLOOR, SHOWING PORTALS TO NEW LOBBY - Pennsylvania Railroad, Harrisburg Station & Trainshed, Market & South Fourth Streets, Harrisburg, Dauphin County, PA

182

View of exterior circumferential path at northeast side of building ...  

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

View of exterior circumferential path at northeast side of building beneath trellis, looking southeast - National Zoological Park, Bird House, 3001 Connecticut Avenue NW, Washington, District of Columbia, DC

183

7. Details of northeast elevation, demonstrating the relationship of basement ...  

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

7. Details of northeast elevation, demonstrating the relationship of basement windows to column bases. - Roanoke Veterans Administration Hospital, Building No. 6, 1970 Roanoke Boulevard, Salem, Salem, VA

184

Northeast and northwest elevations. View to south Flint Creek ...  

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

Northeast and northwest elevations. View to south - Flint Creek Hydroelectric Project, Powerhouse, Approximately 3 miles southeast of Porters Corner on Powerhouse Road, Philipsburg, Granite County, MT

185

PERSPECTIVE VIEW OF WEST AND SOUTH FACADES LOOKING NORTHEAST ...  

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

PERSPECTIVE VIEW OF WEST AND SOUTH FACADES LOOKING NORTHEAST - Pennsylvania Furnace, Ironmaster's Privy, West of State Route 45, South of Centre County line, Pennsylvania Furnace, Huntingdon County, PA

186

PERSPECTIVE VIEW OF SOUTH SIDE OF HOUSE LOOKING NORTHEAST ...  

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

PERSPECTIVE VIEW OF SOUTH SIDE OF HOUSE LOOKING NORTHEAST - Pennsylvania Furnace, Ironmaster's Mansion, West of State Route 45, South of Centre County line, Pennsylvania Furnace, Huntingdon County, PA

187

Perspective view of east entrance from northeast National Home ...  

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

Perspective view of east entrance from northeast - National Home for Disabled Volunteer Soldiers, Pacific Branch, Mental Health Building, 11301 Wilshire Boulevard, West Los Angeles, Los Angeles County, CA

188

OVERHILLS GOLF COURSE LOOKING NORTHEAST FROM SPECTATOR SHELTER BACK UP ...  

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

OVERHILLS GOLF COURSE LOOKING NORTHEAST FROM SPECTATOR SHELTER BACK UP FAIRWAY #1 - Overhills, Fort Bragg Military Reservation, Approximately 15 miles NW of Fayetteville, Overhills, Harnett County, NC

189

Elevation of grove looking northeast toward Washington Monument 1910 ...  

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

Elevation of grove looking northeast toward Washington Monument - 1910 Japanese Flowering Cherry Trees , East Potomac Golf Course, East Potomac Park, Hains Point vicinity, Washington, District of Columbia, DC

190

A multidisciplinary study on the emplacement mechanism of the Qingyang-Jiuhua Massif in Southeast China and its tectonic bearings  

NASA Astrophysics Data System (ADS)

The Late Mesozoic geology of the lower Yangtze area in South China is characterized by the opening of sedimentary basins, the emplacement of numerous granitic plutons, and the formation of several world-class ore deposits. Although many studies have been recently carried out on plutons in this region in order to understand the geodynamic significance of the magmatism, they are mainly concentrated on geochronology and geochemistry, the contemporary tectonic framework remains poorly constrained. To overcome this weakness and to provide a comprehensive understanding of the granitoid emplacement, a multidisciplinary approach, including structural analysis, anisotropy magnetic susceptibility (AMS), paleomagnetism, AlTotal in hornblende geobarometery and 2D gravity modeling, has been carried out in the Qingyang-Jiuhua massif in the southern part of Anhui province. The Qingyang-Jiuhua massif is composed of the granodioritic Qingyang pluton dated at 141 Ma and the monzogranitic Jiuhua pluton dated at 131 Ma. Field structural observations show weak ductile deformation of country rocks and granitoid with limited contact metamorphism. In the contact aureole of the massif, the foliation follows the pluton contour, and the mineral lineation is rare. When present, the lineation exhibits a down-dip attitude. The AMS fabrics of 93 sites reveal a horizontal magnetic foliation pattern and scattered lineations with a low anisotropy degree (PJ<1.2). The paleomagnetic results indicate that (a) the younger Jiuhua pluton did not produce a remagnetization in the older Qingyang pluton, (b) no relative movement can be observed between these two plutons, (c) the entire massif did not experience relative movement with respect to South China considering the uncertainties due to the paleomagnetic method. The hornblende geobarometry shows that the Qingyang-Jiuhua massif emplaced at a shallow depth in crust. The gravity modeling documents that the structure of the massif corresponds with a laccolith, characterized by several NE-SW striking linear deep zones that may be interpreted as tension gashes acting as feeder roots of the massif and where the magma intrudes by injection. The integration of these results allows us to conclude that (1) the Qingyang-Jiuhua massif is fed by vertical NE-SW striking tension gashes; (2) The study area did not experience significant relative movements with respect to South China, (3) the late Early Cretaceous tectonics in the study area is characterized by a moderate NW-SE directed extension.

Wei, Wei; Martelet, Guillaume; Le Breton, Nicole; Chen, Yan; Faure, Michel; Lin, Wei; Hou, Quan Lin; Shi, Yong Hong

2013-04-01

191

New species from the Galoka and Kalabenono massifs: two unknown and severely threatened mountainous areas in NW Madagascar  

PubMed Central

The Galoka mountain chain, comprising principally the Galoka and Kalabenono massifs, situated at the northern edge of the Sambirano Region in NW Madagascar is an area that was virtually unknown botanically. It was visited three times between 2005 and 2007 as part of a floristic inventory. Both massifs contain the last remaining primary forests in the Galoka chain, which extends parallel to the coastline from South of Ambilobe to North of Ambanja. Several new species have been discovered amongst the collections, eight of which are described here. PMID:21857767

Callmander, Martin W.; Rakotovao, Charles; Razafitsalama, Jeremi; Phillipson, Peter B.; Buerki, Sven; Hong-Wa, Cynthia; Rakotoarivelo, Nivo; Andriambololonera, Sylvie; Koopman, Margaret M.; Johnson, David M.; Deroin, Thierry; Ravoahangy, Andriamandranto; Solo, Serge; Labat, Jean-Noël; Lowry, Porter P.

2011-01-01

192

Utilization of digital LANDSAT imagery for the study of granitoid bodies in Rondonia: Case example of the Pedra Branca massif  

NASA Technical Reports Server (NTRS)

Analysis of digital multispectral MSS-LANDSAT images enhanced through computer techniques and enlarged to a video scale of 1:100.000, show the main geological and structura features of the Pedra Branca granitic massif in Rondonia. These are not observed in aerial photographs or adar images. Field work shows that LANDSAT photogeological units correspond to different facies of granitic rocks in the Pedra Branca massif. Even under the particular characteristics of Amazonia (Tropical Forest, deep weathering, and Quaternary sedimentary covers), an adequate utilization of orbital remote sensing images can be important tools for the orientation of field works.

Parada, N. D. J. (principal investigator); Almeidafilho, R.; Payolla, B. L.; Depinho, O. G.; Bettencourt, J. S.

1984-01-01

193

40 CFR 81.55 - Northeast Pennsylvania-Upper Delaware Valley Interstate Air Quality Control Region.  

Code of Federal Regulations, 2014 CFR

... 2014-07-01 false Northeast Pennsylvania-Upper Delaware Valley Interstate...Control Regions § 81.55 Northeast Pennsylvania-Upper Delaware Valley Interstate...Quality Control Region. The Northeast Pennsylvania-Upper Delaware Valley...

2014-07-01

194

40 CFR 81.55 - Northeast Pennsylvania-Upper Delaware Valley Interstate Air Quality Control Region.  

Code of Federal Regulations, 2013 CFR

... 2013-07-01 false Northeast Pennsylvania-Upper Delaware Valley Interstate...Control Regions § 81.55 Northeast Pennsylvania-Upper Delaware Valley Interstate...Quality Control Region. The Northeast Pennsylvania-Upper Delaware Valley...

2013-07-01

195

40 CFR 81.55 - Northeast Pennsylvania-Upper Delaware Valley Interstate Air Quality Control Region.  

Code of Federal Regulations, 2011 CFR

... 2011-07-01 false Northeast Pennsylvania-Upper Delaware Valley Interstate...Control Regions § 81.55 Northeast Pennsylvania-Upper Delaware Valley Interstate...Quality Control Region. The Northeast Pennsylvania-Upper Delaware Valley...

2011-07-01

196

40 CFR 81.55 - Northeast Pennsylvania-Upper Delaware Valley Interstate Air Quality Control Region.  

Code of Federal Regulations, 2012 CFR

... 2012-07-01 false Northeast Pennsylvania-Upper Delaware Valley Interstate...Control Regions § 81.55 Northeast Pennsylvania-Upper Delaware Valley Interstate...Quality Control Region. The Northeast Pennsylvania-Upper Delaware Valley...

2012-07-01

197

Northeast Campus Precinct Characterized by pasture lands, farm buildings and a golf course, the Northeast precinct,  

E-print Network

201 Northeast Campus Precinct 3.11 Characterized by pasture lands, farm buildings and a golf course include the Bluegrass Lane Facilities, Robert Trent Jones Golf Course and open grazing lands along Hanshaw and the Plantations. Located along Warren Road is the Robert Trent Jones Golf Course, recognized as one of America

Chen, Tsuhan

198

Geomorphological and structural modification of the Serbomacedonian massif during the neotectonic stage  

NASA Astrophysics Data System (ADS)

The Serbomacedonian massif is an old geotectonic zone strongly modified during the Neogene and the Quaternary. This modification resulted from intensive tectonic activity. Two main sets of faults crossed almost at right angles and contributed to the breakage of the pre-Alpidic crust of the massif, while the subsequent vertical movements of the broken blocks contributed to its morphostructural differentiation. Geomorphological and structural features reveal the formation of three distinct morphotectonic units in the continental part of this zone: - The Northern Unit is dominated by the Morava basin. - The Central Unit forms a mountainous asymmetric ridge. - The Southern Unit forms a complex area of horst and graben structures. The Central and the Southern Units are bounded by the Struma-Strymon basin and the Vardar-Axios basin. In terms of global tectonics, the Northern Unit was affected by a Miocene extension in the Pannonian basin. It continued after the Miocene as a long-term slow process, as indicated by the present low seismicity. The Central Unit bears evidence of compression almost transverse to the long axis of the zone. The tectonic processes are still active as is indicated by high seismicity in the Struma basin and recent uplift of the crust in the area of the ridge. The Southern Unit was affected by an early Miocene extension and a late strong Quaternary extension in the Aegean region. The high seismicity and mobility of this unit indicate, that very active tectonic processes are still continuing.

Psilovikos, A.

1984-12-01

199

The age of Earth's largest volcano: Tamu Massif on Shatsky Rise (northwest Pacific Ocean)  

NASA Astrophysics Data System (ADS)

This study presents laser step-heating 40Ar/39Ar age determinations of basaltic lava samples from Tamu Massif, the oldest and largest edifice of the submarine Shatsky Rise in the northwest Pacific and Earth's proposed largest volcano. The rocks were recovered during Integrated Ocean Drilling Program Expedition 324, which cored 160 m into the igneous basement near the summit of Tamu Massif. The analyzed lavas cover all three major stratigraphic groups penetrated at this site and confirm a Late Jurassic/Early Cretaceous age for the onset of Shatsky Rise volcanism. Lavas analyzed from the lower and middle section of the hole yield plateau ages between 144.4 ± 1.0 and 143.1 ± 3.3 Ma with overlapping analytical errors (2?), whereas a sample from the uppermost lava group produced a significantly younger age of 133.9 ± 2.3 Ma suggesting a late or rejuvenated phase of volcanism. The new geochronological data infer minimum (average) melt production rates of 0.63-0.84 km3/a over a time interval of 3-4 million years consistent with the presence of a mantle plume.

Geldmacher, Jörg; van den Bogaard, Paul; Heydolph, Ken; Hoernle, Kaj

2014-09-01

200

Occurrence of an unknown Atlantic eruption in the Chaîne des Puys volcanic field (Massif Central, France)  

NASA Astrophysics Data System (ADS)

A volcanic ash layer, called MF1, was recently identified in Holocene sediments from the Gourgon and Molhiac peat bogs (Monts du Forez, French Massif Central). This ash layer consists of colorless shards with a heterogeneous trachytic to rhyolitic composition. The trace elements analyzed by Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS) attest to a local origin. Radiocarbon dating of peat samples taken within and below the ash layer indicates the best age at 6339 ± 61 cal yr BP, i.e. an age contemporaneous with the volcanic activity of Montchal, Montcineyre and Pavin volcanoes from the Chaîne des Puys volcanic field. These volcanoes are characterized by basaltic and trachytic products, thus the rhyolitic composition of MF1 tephra suggests that it is likely originated from an unknown eruption. These results again confirm the interest of studying the distal volcanic ash fallouts in order to establish or specify records of past eruptions of volcanic fields. Identification of this new tephra layer also provides an additional tephrochronological marker for Eastern French Massif Central.

Jouannic, G.; Walter-Simonnet, A. V.; Bossuet, G.; Cubizolle, H.; Boivin, P.; Devidal, J. L.; Oberlin, C.

2014-08-01

201

The age of Earth's largest volcano: Tamu Massif on Shatsky Rise (northwest Pacific Ocean)  

NASA Astrophysics Data System (ADS)

This study presents laser step-heating 40Ar/39Ar age determinations of basaltic lava samples from Tamu Massif, the oldest and largest edifice of the submarine Shatsky Rise in the northwest Pacific and Earth's proposed largest volcano. The rocks were recovered during Integrated Ocean Drilling Program Expedition 324, which cored 160 m into the igneous basement near the summit of Tamu Massif. The analyzed lavas cover all three major stratigraphic groups penetrated at this site and confirm a Late Jurassic/Early Cretaceous age for the onset of Shatsky Rise volcanism. Lavas analyzed from the lower and middle section of the hole yield plateau ages between 144.4 ± 1.0 and 143.1 ± 3.3 Ma with overlapping analytical errors (2?), whereas a sample from the uppermost lava group produced a significantly younger age of 133.9 ± 2.3 Ma suggesting a late or rejuvenated phase of volcanism. The new geochronological data infer minimum (average) melt production rates of 0.63-0.84 km3/a over a time interval of 3-4 million years consistent with the presence of a mantle plume.

Geldmacher, Jörg; van den Bogaard, Paul; Heydolph, Ken; Hoernle, Kaj

2014-11-01

202

Cross-gradient joint inversion of gravity and aeromagnetic data in mineralized northern Menderes Massif, Turkey  

NASA Astrophysics Data System (ADS)

The Menderes Massif in western Turkey formed by the stacking of tectonic units during Cretaceous-Eocene shortening that were modified by late Oligocene to recent crustal extension, accompanied by significant crustal melting. The interaction of regional deformation with crustal melting and the emplacement of plutons and volcanic complexes during both contraction and extension across structures related to the Tethyan suture has resulted in epithermal and porphyry type gold mineralization that has taken place mainly in the northern and western parts of the Menderes Massif, and in ongoing structurally controlled hydrothermal activity across its entire extent. The northern Menderes Massif contains granitic intrusions, ophiolitic klippen, volcanics, metamorphic basement and Cenozoic sediments. Some of the plutons, such as the Egrigöz granite, have intruded into the footwall of an extensional shear zone, defining at least part of the granite-intruded basement as a Miocene metamorphic core complex with ophiolitic rocks of the Vardar-Izmir-Ankara zone in the hanging wall plate. Here we present results of cross-gradient joint inversions of gravity and magnetic data in the northern Menderes Massif along a series of cross-sections oriented N-S, E-W and ESE-WNW. The inversions were carried out to better define the subsurface geology and aid targeting hydrothermal mineralization. The results suggest that metamorphic rocks with low magnetization underlie wide areas in the centre and east of the study area. Dense rocks with low to intermediate magnetization often correlate with oceanic affinity rocks that extend to great depth in the west and southeast of the study area, but occur as thin sheets in the centre. Regions of low to intermediate magnetization and low density are mostly encountered with the upper 5 km of the crust and are often spatially associated with felsic volcanic complexes and sedimentary rocks. High magnetization and low density are generally associated with granitoid intrusions, and mainly occur in the west, north and southeast of the study area, where they locally extend to the base of the cross section at 10 km depth. The inversions allow tracing the tectonic boundary between the Menderes Massif and overlying accreted subduction complex rocks: crustal provinces with oceanic affinity occur predominantly in the west and the southeast of the sections. The Bornova flysch, and the Tavsanli and Afyon zones occur in thin sheets in the centre / east and make up the entire studied depth of the crust in the west. The boundary is a steep structure in the west, and a shallowly dipping structure in the centre of the area, where the Menderes basement is at shallow levels. Where the structure is shallow, the boundary is likely to be an extensional detachment fault. Metamorphic rocks, but more so ophiolitic rocks in the OC terrain are potential reductants for magmatic and hydrothermal fluids sourced from, or in equilibrium with felsic-intermediate volcanics and intrusions. The key control to mineralisation may be with which type of wall rock Miocene intrusions and volcanic complexes have interacted. Given that the subduction complexes consist to a large extent of ultramafic and meta-carbonate rocks, it is not surprising that most mineral occurrences are in oceanic affinity crust, which is more prospective because of (i) its potential to reduce magmatic fluids, (ii) its mechanical inhomogeneity which translates into a better potential to dilate under stress thus providing pathways to fluids and melts, and (iii) its position as the 'hanging wall trap' unit in the steep western zone and the shallow detachments in the central study area.

Gessner, Klaus; Gallardo, Luis; Wedin, Francis; Sener, Kerim

2014-05-01

203

5. VIEW OF FRONT (WEST AND SOUTH SIDES) TO NORTHEAST. ...  

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

5. VIEW OF FRONT (WEST AND SOUTH SIDES) TO NORTHEAST. VIEW TO NORTHEAST. NOTE THAT LARGE TREES PREVENT MORE COMPLETE VIEW FROM BETTER ANGLE. FOR MORE COMPLETE VIEW, SEE PHOTOGRAPHIC COPY OF 1916 PHOTO, NO. ID-17-C-35. - Boise Project, Boise Project Office, 214 Broadway, Boise, Ada County, ID

204

Status of the Fishery Resources of the Northeast United States  

NSDL National Science Digital Library

This scientific resource provides information on fishery resources along the Atlantic Coast of the US. Released by the Resource Evaluation and Assessment Division of the Northeast Fisheries Science Center (NEFSC), it gives a detailed overview of the status of fishery resources in the Northeast US (see Introduction section).

205

PIRATA Northeast Extension 2007 / AEROESE III Cruise Report  

E-print Network

PIRATA Northeast Extension 2007 / AEROESE III Cruise Report NOAA Ship Ronald H. Brown RB0703 May Northeast Extension Cruise RB0703 was designed to collect a suite of oceanographic and meteorological (NOAA/PMEL) Note: this preliminary cruise report addresses only the hydrographic and mooring work

206

72. NORTHEAST SIDE OF NITROGEN EXCHANGERS IN FOREGROUND; FUEL APRON ...  

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

72. NORTHEAST SIDE OF NITROGEN EXCHANGERS IN FOREGROUND; FUEL APRON IN BACKGROUND. NORTHEAST CORNER OF WEST CAMERA TOWER ALSO IN BACKGROUND. - Vandenberg Air Force Base, Space Launch Complex 3, Launch Pad 3 East, Napa & Alden Roads, Lompoc, Santa Barbara County, CA

207

2. VIEW OF NORTHEAST (GABLE END) AND SOUTHEAST SIDES FROM ...  

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

2. VIEW OF NORTHEAST (GABLE END) AND SOUTHEAST SIDES FROM THE NORTHEAST. (BUILDING 111 VISIBLE ON LEFT; BUILDING 114 AT RIGHT.) INTERIOR OF BUILDING 113 TO THE SOUTHEAST.) - Fort McPherson, World War II Station Hospital, G. U. Treatment Unit Lavatory, Thorne & Hood Avenues, Atlanta, Fulton County, GA

208

2. View of blast deflector fences along northeast side of ...  

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

2. View of blast deflector fences along northeast side of the operational apron. View to northwest. - Offutt Air Force Base, Looking Glass Airborne Command Post, Blast Deflector Fences, Northeast & Southwest sides of Operational Apron, Project Looking Glass Historic District, Bellevue, Sarpy County, NE

209

17. Interior detail, pilaster on transverse wall at the northeast ...  

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

17. Interior detail, pilaster on transverse wall at the northeast end of the Machine Shop, Roundhouse Machine Shop Extension, Southern Pacific Railroad Carlin Shops, view to northeast (90mm lens). Note the offset top of the pilaster, a feature common to all interior transverse wall pilasters. - Southern Pacific Railroad, Carlin Shops, Roundhouse Machine Shop Extension, Foot of Sixth Street, Carlin, Elko County, NV

210

NORTHEAST LOON STUDY WORKING GROUP PARTNERSHIP TO ASSESS ENVIRONMENTAL RISK  

EPA Science Inventory

The Northeast Loon Study Working Group (NELSWG) was formed in 1994 to proactively identify threats to one of the Northeast's most popular waterbirds, the common loon, Gavia immer. Seventeen institutions have come together to identify strategy, coordinate the work load, and share ...

211

2. Southeast end and northeast rear, building no. 528. View ...  

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

2. Southeast end and northeast rear, building no. 528. View to west. - Offutt Air Force Base, Looking Glass Airborne Command Post, Hydraulic Fluid Buildings, Northeast of Looking Glass Avenue at southwest side of Project Looking Glass Historic District, Bellevue, Sarpy County, NE

212

3. Northeast rear and northwest end, building no. 528. View ...  

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

3. Northeast rear and northwest end, building no. 528. View to south. - Offutt Air Force Base, Looking Glass Airborne Command Post, Hydraulic Fluid Buildings, Northeast of Looking Glass Avenue at southwest side of Project Looking Glass Historic District, Bellevue, Sarpy County, NE

213

5. Northeast rear and northwest end, building no. 529. View ...  

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

5. Northeast rear and northwest end, building no. 529. View to south. - Offutt Air Force Base, Looking Glass Airborne Command Post, Hydraulic Fluid Buildings, Northeast of Looking Glass Avenue at southwest side of Project Looking Glass Historic District, Bellevue, Sarpy County, NE

214

Understanding Philanthropic Motivations of Northeast State Community College Donors  

ERIC Educational Resources Information Center

At Northeast State Community College (NeSCC) nearly 70% of students need some form of financial aid to attend. State support is flattening or decreasing and the gap is filled by private donors' support (Northeast State Community College, 2011). Hundreds of donors have made significant contributions to aid in the education of those in the…

Cook, Heather J.

2012-01-01

215

16. View of northeast corner of East Ward Street and ...  

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

16. View of northeast corner of East Ward Street and North McDonald Avenue, facing northeast. - Gaskin Avenue Neighborhood, Bounded by Dart Street to east, CSX Railroad to south, Pearl & Madison Avenues to west, & Wilson & Gordon Streets to north, Douglas, Coffee County, GA

216

NortheasterN U.s. AquAculture  

E-print Network

NortheasterN U.s. AquAculture MAnAgeMent guide A manual for the identification and management of aquaculture production hazards First edition, 2014 tessa L. Getchis, EditorUnited states Department of agriculture National Institute of Food and Agriculture #12;#12;#12;#12;NortheasterN U.s. AquAculture MAn

Firestone, Jeremy

217

Credit BG. Northeast and northwest facades of Building 4496 (Security ...  

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

Credit BG. Northeast and northwest facades of Building 4496 (Security Facility) as seen when looking south (178°) from entrance to secured area. The Control Tower (Building 4500) appears in background. The Security Facility is part of the secured Building 4505 complex - Edwards Air Force Base, North Base, Security Facility, Northeast of A Street, Boron, Kern County, CA

218

1. VIEW NORTHWEST, NORTHEAST SIDE AND SOUTHEAST FRONT OF TOWER ...  

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

1. VIEW NORTHWEST, NORTHEAST SIDE AND SOUTHEAST FRONT OF TOWER AND ORIGINAL LIGHTHOUSE - Mispillion Lighthouse, Beacon Tower, South bank of Mispillion River at it confluence with Delaware River at northeast end of County Road 203, 7 miles east of Milford, Milford, Sussex County, DE

219

Microgranular enclaves as evidence of rapid cooling in granitoid rocks: the case of the Los Pedroches granodiorite, Iberian Massif, Spain  

Microsoft Academic Search

Microgranular enclaves from the Los Pedroches granodiorite (LPG) (Los Pedroches Batholith, Iberian Massif, Spain) have Sr-Nd isotopic and mineral chemical compositions close to those of their host. This similarity is not related to restite unmixing, as indicated by the igneous textures of the enclaves. A number of other geological and geochemical lines of evidence, including the high REE and HFSE

Teodosio Donaire; Emilio Pascual; Christian Pin; Jean-Louis Duthou

2005-01-01

220

Geochemistry and petrogenesis of post-collisional ultrapotassic syenites and granites from southernmost Brazil: the Piquiri Syenite Massif.  

PubMed

The Piquiri Syenite Massif, southernmost Brazil, is part of the post-collisional magmatism related to the Neoproterozoic Brasiliano-Pan-African Orogenic Cycle. The massif is about 12 km in diameter and is composed of syenites, granites, monzonitic rocks and lamprophyres. Diopside-phlogopite, diopside-biotite-augite-calcic-amphibole, are the main ferro-magnesian paragenesis in the syenitic rocks. Syenitic and granitic rocks are co-magmatic and related to an ultrapotassic, silica-saturated magmatism. Their trace element patterns indicate a probable mantle source modified by previous, subduction-related metasomatism. The ultrapotassic granites of this massif were produced by fractional crystallization of syenitic magmas, and may be considered as a particular group of hypersolvus and subsolvus A-type granites. Based upon textural, structural and geochemical data most of the syenitic rocks, particularly the fine-grained types, are considered as crystallized liquids, in spite of the abundance of cumulatic layers, schlieren, and compositional banding. Most of the studied samples are metaluminous, with K2O/Na2O ratios higher than 2. The ultrapotassic syenitic and lamprophyric rocks in the Piquiri massif are interpreted to have been produced from enriched mantle sources, OIB-type, like most of the post-collisional shoshonitic, sodic alkaline and high-K tholeiitic magmatism in southernmost Brazil. The source of the ultrapotassic and lamprophyric magmas is probably the same veined mantle, with abundant phlogopite + apatite + amphibole that reflects a previous subduction-related metasomatism. PMID:18506262

Nardi, Lauro V S; Plá-Cid, Jorge; Bitencourt, Maria de Fátima; Stabel, Larissa Z

2008-06-01

221

The structural geometry, metamorphic and magmatic evolution of the Everest massif, High Himalaya of Nepal-South Tibet  

Microsoft Academic Search

This paper presents a new geological map together with cross-sections and lateral sections of the Everest massif. We combine field relations, structural geology, petrology, thermobarometry and geochronology to interpret the tectonic evolution of the Everest Himalaya. Lithospheric convergence of India and Asia since collision at c. 50 Ma. resulted in horizontal shortening, crustal thickening and regional metamorphism in the Himalaya

M. P. S EARLE; R. D. L AW; R. R. PA; D. J. WAT

222

Geochemistry of apatite-rich layers in the Finero phlogopiteperidotite massif (Italian Western Alps) and ion microprobe dating of apatite  

E-print Network

Geochemistry of apatite-rich layers in the Finero phlogopite­peridotite massif (Italian Western form 20 February 2008 Accepted 28 February 2008 Editor: R.L. Rudnick Keywords: Finero peridotite Metasomatism Apatite Carbonate Highly metasomatized apatite-rich peridotite layers (AP-layer) occur

223

Evidence for Excess Argon during High Pressure Metamorphism in the Dora Maira Massif (Western Alps, Italy), using an  

E-print Network

1 Evidence for Excess Argon during High Pressure Metamorphism in the Dora Maira Massif (Western. de la Terre, Clermont-Ferrand, FR Abstract Ultra-high pressure eclogite/amphibolite grade-heating 40 Ar-39 Ar and laser spot ages from high pressure phengites yield plateau ages as old as 110Ma which

Boyer, Edmond

224

Montane vegetation of the Mt. Field massif, Tasmania: a test of some hypotheses about properties of community patterns  

Microsoft Academic Search

direct gradient analysis was applied to the montane vegetation of the Mt. Field massif, Tasmania. Ecological response surface were constructed, describing the relationship between the mean % cover of each of 100 vascular plant species and two major environmental complex-gradients represented by soil drainage and altitude. The hypotheses tested were that: (1) the ecological responses of species are generally of

Peter R. Minchin

1989-01-01

225

Multicriterion validation of a semidistributed conceptual model of the water cycle in the Fecht Catchment (Vosges Massif, France)  

Microsoft Academic Search

Model validation is still a crucial issue in hydrology. It is usually limited to comparing simulated and measured streamflows, while many other fluxes and storages are also simulated. This is especially true for spatially distributed models, for which multivariable and multiscale validation procedures are needed. Such an approach has been tested on the Fecht research basin (Vosges Massif, France) over

B. Ambroise; J. L. Perrin; D. Reutenauer

1995-01-01

226

Origin and evolution of the Escambray Massif (Central Cuba): an example of HP/LT rocks exhumed during intraoceanic subduction  

E-print Network

Origin and evolution of the Escambray Massif (Central Cuba): an example of HP/LT rocks exhumed in Jurassic metasedimentary rocks (non-me´ lange zone) have a calc-alkaline arc-like origin and yield evidence exhumation of HP / LT rocks from the Sancti Spiritus dome occurred at 70 Ma by top to SW thrusting

Demouchy, Sylvie

227

Late Visean hidden basins in the internal zones of the Variscan belt: UPb zircon evidence from the French Massif Central  

Microsoft Academic Search

U-Pb zircon ages from volcanic rocks interbedded in two Upper Carboniferous basins of the Variscan Massif Central (France) document the presence of an unexpected late Visean sedimentary sequence. Zircons extracted from a fireclay at the base of the sedimentary pile in the Bosmoreau basin provide an age of 332 ± 4 Ma, identical to the 333 ± 2 Ma age

O. Bruguier; J. F. Becq-Giraudon; D. Bosch; J. R. Lancelot

1998-01-01

228

The Toa Baja Drilling Project, Puerto Rico: Scientific drilling into a non-volcanic island arc massif  

SciTech Connect

The Toa Baja Drilling Project was a broad, interdisciplinary experiment to document the in situ geology and geophysics of a non-volcanic island arc massif. This overview provides a brief summary of oil exploration on Puerto Rico that lead up to the present investigation, and summarizes some of the problems addressed by drilling.

Larue, D.K. (Univ. of Puerto Rico, Mayaguez (Puerto Rico))

1991-03-01

229

Massification, Bureaucratization and Questing for "World-Class" Status: Higher Education in China since the Mid-1990s  

ERIC Educational Resources Information Center

Purpose: This article aims to review the latest developments of the higher education sector in China since the mid-1990s by focusing on the expansion of university education. Design/methodology/approach: It is argued that while massification of higher education is an important indication of the progress in China's higher education system, the…

Ngok, Kinglun

2008-01-01

230

Possible petrogenetic associations among igneous components in North Massif soils: Evidence in 2-4 MM soil particles from 76503  

NASA Astrophysics Data System (ADS)

Studies of Apollo 17 highland igneous rocks and clasts in breccias from the North and South Massifs have described magnesian troctolite, norite, anorthositic gabbro, dunite, spinel cataclasites, and granulitic lithologies that may have noritic anothosite or anorthositic norite/gabbro as igneous precursors, and have speculated on possible petrogenetic relationships among these rock types. Mineral compositions and relative proportions of plagioclase and plagioclase-olivine particles in samples 76503 indicate that the precursor lithology of those particles were troctolitic anorthosite, not troctolite. Mineral and chemical compositions of more pyroxene-rich, magnesian breccias and granulites in 76503 indicate that their precursor lithology was anorthositic norite/gabbro. The combination of mineral compositions and whole-rock trace-element compositional trends supports a genetic relationship among these two groups as would result from differentiation of a single pluton. Although highland igneous lithologies in Apollo 17 materials have been described previously, the proportions of different igneous lithologies present in the massifs, their frequency of association, and how they are related are not well known. We consider the proportions of, and associations among, the igneous lithologies found in a North Massif soil, which may represent those of the North Massif or a major part of it.

Jolliff, Bradley L.; Bishop, Kaylynn M.; Haskin, Larry A.

1992-12-01

231

The Dilemma and Solutions for the Conflicts between Equality and Excellence in the Massification of Higher Education in Taiwan  

ERIC Educational Resources Information Center

Equality and excellence are two core values underlying many educational endeavors; however, they are often in conflict and controversy. This article intends to examine the dilemma created by such controversies in the context of massification of higher education in Taiwan and attempt to provide solutions from both the theoretical and policy…

Hsiou-Huai, Wang

2012-01-01

232

Possible petrogenetic associations among igneous components in North Massif soils: Evidence in 2-4 mm soil particles from 76503  

NASA Technical Reports Server (NTRS)

Studies of Apollo 17 highland igneous rocks and clasts in breccias from the North and South Massifs have described magnesian troctolite, norite, anorthositic gabbro, dunite, spinel cataclasites, and granulitic lithologies that may have noritic anothosite or anorthositic norite/gabbro as igneous precursors, and have speculated on possible petrogenetic relationships among these rock types. Mineral compositions and relative proportions of plagioclase and plagioclase-olivine particles in samples 76503 indicate that the precursor lithology of those particles were troctolitic anorthosite, not troctolite. Mineral and chemical compositions of more pyroxene-rich, magnesian breccias and granulites in 76503 indicate that their precursor lithology was anorthositic norite/gabbro. The combination of mineral compositions and whole-rock trace-element compositional trends supports a genetic relationship among these two groups as would result from differentiation of a single pluton. Although highland igneous lithologies in Apollo 17 materials have been described previously, the proportions of different igneous lithologies present in the massifs, their frequency of association, and how they are related are not well known. We consider the proportions of, and associations among, the igneous lithologies found in a North Massif soil, which may represent those of the North Massif or a major part of it.

Jolliff, Bradley L.; Bishop, Kaylynn M.; Haskin, Larry A.

1992-01-01

233

A Paleozoic anorthosite massif related to rutile-bearing ilmenite ore deposits, south of the Polochic fault, Chiapas Massif Complex, Mexico  

NASA Astrophysics Data System (ADS)

The Chiapas Massif Complex in the southern Maya terrane is mostly composed of late Permian igneous and meta-igneous rocks. Within this complex in southern Mexico and in the adjacent San Marcos Department of Guatemala, south of the Polochic fault, several small outcrops (~10 km2) of a Phanerozoic andesine anorthosite massif were found following an E-W trend similar to the Polochic-Motagua Fault System. Such anorthosites are related to rutile-bearing ilmenite ore deposits and hornblendite-amphibolite bands (0.1-3 meters thick). The anorthosites show recrystallization and metamorphic retrogression (rutile with titanite rims), but no relicts of high-grade metamorphic minerals such as pyroxene or garnet have been found. In Acacoyagua, Chiapas, anorthosites are spatially related to oxide-apatite rich mafic rocks; in contrast, further to the west in Motozintla, they are related to monzonites. Zircons from these monzonites yield a Permian U-Pb age (271.2×1.4 Ma) by LA-MC-ICPMS. Primary mineral assemblage of the anorthosites include mostly medium to fine-grained plagioclase (>90%) with rutile and apatite as accessory minerals, occasionally with very low amounts of quartz. Massive Fe-Ti oxide lenses up to tens of meters in length and few meters thick are an ubiquitous constituent of these anorthosites and their mineralogy include ilmenite (with exsolution lamellae of Ti-magnetite), rutile, magnetite, clinochlore, ×spinel, ×apatite, ×zircon and srilankite (Ti2ZrO6, first finding of this phase in Mexico). Rutile occurs within the massive ilmenite in two morphological types: (1) fine-grained (5-40 ?m) rutile along ilmenite grain boundaries or fractures, and (2) coarse-grained rutile (<5 mm) as discrete grains, whereas magnetite and srilankite only appear as small grains along ilmenite boundaries. Zircon is present as discontinuously aligned small grains (10-40 ?m) forming rims around many rutile and ilmenite grains. Attempts to date zircon rims by U-Pb using LA-MC-ICPMS yielded unreliable results due to extremely low U concentrations (<4 ppm). Geochemical analyses revealed that the Chiapanecan anorthosites contain by average ~58% SiO2, ~25% Al2O3, ~7% CaO, ~6% Na2O, >1000 ppm Sr, and positive europium anomalies. The anorthosites probably represent the exhumed roots of a deep-seated and differentiated mafic body of late Permian age as part of the Chiapas batholith, apparently precluding major displacements across the Polochic fault.

Cisneros, A.; Ortega-Gutiérrez, F.; Weber, B.; Solari, L.; Schaaf, P. E.; Maldonado, R.

2013-12-01

234

NASA Northeast Regional Technology Transfer Center  

NASA Technical Reports Server (NTRS)

This report is a summary of the primary activities and metrics for the NASA Northeast Regional Technology Transfer Center, operated by the Center for Technology Commercialization, Inc. (CTC). This report covers the contract period January 1, 2000 - March 31, 2001. This report includes a summary of the overall CTC Metrics, a summary of the Major Outreach Events, an overview of the NASA Business Outreach Program, a summary of the Activities and Results of the Technology into the Zone program, and a Summary of the Major Activities and Initiatives performed by CTC in supporting this contract. Between January 1, 2000 and March 31, 2001, CTC has facilitated 10 license agreements, established 35 partnerships, provided assistance 517 times to companies, and performed 593 outreach activities including participation in 57 outreach events. CTC also assisted Goddard in executing a successful 'Technology into the Zone' program.' CTC is pleased to have performed this contract, and looks forward to continue providing their specialized services in support of the new 5 year RTTC Contract for the Northeast region.

Dunn, James P.

2001-01-01

235

Northeast Oregon Hatchery Project, Final Siting Report.  

SciTech Connect

This report presents the results of site analysis for the Bonneville Power Administration Northeast Oregon Hatchery Project. The purpose of this project is to provide engineering services for the siting and conceptual design of hatchery facilities for the Bonneville Power Administration. The hatchery project consists of artificial production facilities for salmon and steelhead to enhance production in three adjacent tributaries to the Columbia River in northeast Oregon: the Grande Ronde, Walla Walla, and Imnaha River drainage basins. Facilities identified in the master plan include adult capture and holding facilities; spawning incubation, and early rearing facilities; full-term rearing facilities; and direct release or acclimation facilities. The evaluation includes consideration of a main production facility for one or more of the basins or several smaller satellite production facilities to be located within major subbasins. The historic and current distribution of spring and fall chinook salmon and steelhead was summarized for the Columbia River tributaries. Current and future production and release objectives were reviewed. Among the three tributaries, forty seven sites were evaluated and compared to facility requirements for water and space. Site screening was conducted to identify the sites with the most potential for facility development. Alternative sites were selected for conceptual design of each facility type. A proposed program for adult holding facilities, final rearing/acclimation, and direct release facilities was developed.

Watson, Montgomery

1995-03-01

236

Seismic imaging of the western Iberian crust using ambient noise: Boundaries and internal structure of the Iberian Massif  

NASA Astrophysics Data System (ADS)

The Iberian Massif one of the major structural units of the Iberian Peninsula is composed by rocks with ages ranging from the Upper Precambrian to Upper Carboniferous. The massif outcrops in Central and Western Iberia and the location of its limits, as well as the relationship between its shallow and deeper structures are still a matter of debate. Several problems like source-receiver geometry, irregular seismicity distribution or, for some methods, low seismicity occurrence did not allow obtaining high-resolution models of Iberian structure using traditional imaging methods. Seismic interferometry/ambient noise surface-waves tomography allows imaging regions with a resolution that mainly depends on the seismic network coverage. This study aims to map the boundaries of the Iberian Massif particularly those that are covered or in contact with recent (Cenozoic) and older (Mesozoic) basins. Whenever possible, we intend to characterize second-order structures inside the Massif. We present new Rayleigh-wave dispersion maps of the western Iberian Peninsula for periods between 8 and 30 seconds, obtained from correlations of seismic ambient noise, following the recent increase in seismic broadband network density in Portugal and Spain. Group velocities have been computed for each station pair using the empirical Green's functions generated by cross-correlating one-day-length seismic ambient-noise records. The resulting high-path density allows us to obtain lateral variations of the group velocities as a function of period in cells of 0.5° x 0.5° with an unprecedented resolution. As a result we were able to address some of the unknowns regarding the lithospheric structure beneath SW Iberia. The dispersion maps allow the imaging of the major structural units, namely the Iberian Massif, and the Lusitanian and Algarve Meso-Cenozoic basins. The Cadiz Gulf/Gibraltar Strait area corresponds to a strong low-velocity anomaly, which can be followed to the largest period inverted, although slightly shifted to the east at longer periods. Within the Iberian Massif, second-order perturbations in the group velocities are consistent with the transitions between tectonic units composing the massif.

Silveira, Graça; Dias, Nuno; Villaseñor, Antonio

2013-04-01

237

Thematic mapping of likely target areas for the occurence of cassiterite in the Serra do Mocambo (GO) granitic massifs using LANDSAT 2 digital imaging  

NASA Technical Reports Server (NTRS)

The applicability of LANDSAT/MSS images, enhanced by computer derived techniques, as essential tools in mineral research was investigated and the Serra do Mocambo granitic massif was used as illustration. Given the peculiar factors founded in this area, orbital imagery permitted the delineation of potential target areas of mineralization occurrences, associated to albitized/greisenized types. Follow up prospection for primary tin deposits in this granitic massif should be restricted to the delineated areas which are less than 5% of the total superficial area of the massif.

Almeidofilho, R. (principal investigator)

1984-01-01

238

Seafloor acoustic imagery surrounding the Rainbow massif, Mid-Atlantic Ridge 36°N  

NASA Astrophysics Data System (ADS)

The MARINER (Mid-Atlantic Ridge INtegrated Experiments at Rainbow) seismic and geophysical mapping experiment was carried out in April-May 2013 and was designed to examine the relationship between tectonic rifting, heat/melt supply, and oceanic core complex formation at a non-transform offset (NTO) of the Mid-Atlantic Ridge (36°N) the site of the ultramafic-hosted Rainbow hydrothermal system. One component of this experiment was dense acoustic multibeam backscatter and bathymetry data collection. We present acoustic imagery of the seafloor extending across two segments of the Mid-Atlantic Ridge separated by the Rainbow NTO massif. The acoustic imagery provides a broad view of the character of the ridge system, emphasizing the strong variability of seafloor morphology, tectonics, and lava emplacement and reveals the general tectono-magmatic setting of the Rainbow massif. The amplitude data were collected via a hull-mounted multi-beam sonar system (Kongsberg EM-122) aboard the R/V Marcus G. Langseth. The multi-fold, multi-directional coverage of the amplitude data allows for a compilation of all data into a common grid, as is usually done for depth data. Corrections for amplitude loss and grazing angle, in combination with multiple data coverage averages out noisy data, local slope dependence, and removes along-track artifacts that tend to be endemic to sonar images. The benefit is a complete sonar image for the area that can be examined with little distortion due to artifacts, and whose features can be interpreted as being principally derived from the intrinsic reflectivity of the seafloor rather than from look-direction and local seafloor slope. The main features of the image include: (1) newer seafloor within the axial valleys with some discernible individual lava flows; (2) large and small fault scarps and possible fissure systems; (3) sediment-filled basins; (4) terrains composed nearly entirely of small volcanic cones; (5) volcanic ridges; (6) regions of shallow topography exhibiting low sedimentation. The Rainbow massif itself consists of a mixture of high and low backscatter amplitudes, reflective of a complex tectonic and sedimentation history.

Dunn, R. A.; Canales, J.; Sohn, R. A.; Kakone, E.

2013-12-01

239

Tectonic and metallogenic model for northeast Asia  

USGS Publications Warehouse

This document describes the digital files in this report that contains a tectonic and metallogenic model for Northeast Asia. The report also contains background materials. This tectonic and metallogenic model and other materials on this report are derived from (1) an extensive USGS Professional Paper, 1765, on the metallogenesis and tectonics of Northeast Asia that is available on the Internet at http://pubs.usgs.gov/pp/1765/; and (2) the Russian Far East parts of an extensive USGS Professional Paper, 1697, on the metallogenesis and tectonics of the Russian Far East, Alaska, and the Canadian Cordillera that is available on the Internet at http://pubs.usgs.gov/pp/pp1697/. The major purpose of the tectonic and metallogenic model is to provide, in movie format, a colorful summary of the complex geology, tectonics, and metallogenesis of the region. To accomplish this goal four steps were taken: (1) 13 time-stage diagrams, from the late Neoproterozoic (850 Ma) through the present (0 Ma), were adapted, generalized, and transformed into color static time-stage diagrams; (2) the 13 time-stage diagrams were placed in a computer morphing program to produce the model; (3) the model was examined and each diagram was successively adapted to preceding and subsequent diagrams to match the size and surface expression of major geologic units; and (4) the final version of the model was produced in successive iterations of steps 2 and 3. The tectonic and metallogenic model and associated materials in this report are derived from a project on the major mineral deposits, metallogenesis, and tectonics of the Northeast Asia and from a preceding project on the metallogenesis and tectonics of the Russian Far East, Alaska, and the Canadian Cordillera. Both projects provide critical information on bedrock geology and geophysics, tectonics, major metalliferous mineral resources, metallogenic patterns, and crustal origin and evolution of mineralizing systems for this region. The major scientific goals and benefits of the projects are to: (1) provide a comprehensive international data base on the mineral resources of the region that is the first extensive knowledge available in English; (2) provide major new interpretations of the origin and crustal evolution of mineralizing systems and their host rocks, thereby enabling enhanced, broad-scale tectonic reconstructions and interpretations; and (3) promote trade and scientific and technical exchanges between North America and eastern Asia.

Parfenov, Leonid M.; Nokleberg, Warren J.; Berzin, Nikolai A.; Badarch, Gombosuren; Dril, Sergy I.; Gerel, Ochir; Goryachev, Nikolai A.; Khanchuk, Alexander I.; Kuz'min, Mikhail I., Obolenskiy, Alexander A.; Prokopiev, Andrei V.; Ratkin, Vladimir V.; Rodionov, Sergey M.; Scotese, Christopher R.; Shpikerman, Vladimir I.; Timofeev, Vladimir F.; Tomurtogoo, Onongin; Yan, Hongquan

2011-01-01

240

Northeast View in 360-degree panorama  

NASA Technical Reports Server (NTRS)

This view to the Northeast was imaged by the Imager for Mars Pathfinder (IMP) as part of a 360-degree color panorama, taken over sols 8, 9 and 10. A deflated airbag is at the bottom of the image.

Mars Pathfinder is the second in NASA's Discovery program of low-cost spacecraft with highly focused science goals. The Jet Propulsion Laboratory, Pasadena, CA, developed and manages the Mars Pathfinder mission for NASA's Office of Space Science, Washington, D.C. JPL is a division of the California Institute of Technology (Caltech). The IMP was developed by the University of Arizona Lunar and Planetary Laboratory under contract to JPL. Peter Smith is the Principal Investigator.

1997-01-01

241

Northeast Egypt as seen from STS-58  

NASA Technical Reports Server (NTRS)

This oblique view, looking northeast from central Egypt, shows great expanses of the sand covered and rocky Western Desert in the foreground (bottom). The dark patches bottom right are the Dakhla Oases on the south side of an escarpment. The northern half of Egypt's Nile appears here, from about the latitude of Luxor to the delta. Green colors indicate the small area of crops which feed Egypt's population of 55 million. The Nile Delta is partly obscured by a band of clouds, but can be discerned at the coast as a flattened triangle of green. The smaller triangle close by is the Falyum Basin, a depression irrigated by water from the Nile. The coast of the Mediterranean Sea appears left.

1993-01-01

242

Trondhjemite-granodiorite intrusive magmatism of the Losevo lithotectonic zone of the Voronezh crystalline massif  

NASA Astrophysics Data System (ADS)

The mineralogical-petrographic, petrochemical, and geochemical characteristics of the trondhjemite-granodiorite intrusions widespread among the volcanoterrigenous rocks of the eastern part of the Voronezh crystalline massif are studied. The rocks are characterized by cotectic quartz-plagioclase differentiation and differentiated (La/Yb = 31) REE pattern and are enriched in LILE with a decrease in the K/Rb and Zr/Hf ratios and an increase in the Th/U ratio by 1.5-2 times relative to subduction trondhjemites and their volcanic analogs from the modern and young island arcs. These data allow us to conclude that generation of the trondhjemite magma is a result of melting of the rocks of the continental crust during collision. The concordant (SHRIMP) age of trondhjemites is 2047 ± 11 Ma, and the age of zircon cores probably entrapped from the host rocks by the trondhjemitic melt is 2172 ± 17 Ma.

Skryabin, V. Yu.; Terentiev, R. A.

2014-10-01

243

Oxidation state of the lithospheric mantle beneath the Massif Central,France  

NASA Astrophysics Data System (ADS)

The Tertiary and Quaternary volcanism of the French Massif Central sampled the underlying subcontinental lithospheric mantle (SCLM) in the form of xenoliths over a wide geographic area of ~20.000km2. Such an extensive distribution of xenoliths provides an unique opportunity to investigate regional variations in mantle structure and composition. On the basis of textural and geochemical differences, Lenoir et al. (2000) and later Downes et al. (2003) identified two distinct domains in the SCLM lying north and south of latitude 45° 30' N, respectively. The northern domain is relatively refractory, but has experienced pervasive enrichment of LREE. The southern domain is generally more fertile, exhibiting depletion in LREE. A metasomatic overprint has developed to variable extents in many xenolith suites. The different histories of these two juxtaposed blocks of SCLM should also be reflected in their oxidation state, with local variations also to be expected due to metasomatic interactions. For example, if carbonate-melt metasomatism played a role in the LREE enrichment of the northern domain (Lenoir et al. 2000; Downes et al. 2003), then such mantle should be relatively oxidised. Since surprisingly little redox data are currently available, we are undertaking a study to determine the oxidation state of the SCLM beneath the Massif Central over the largest geographical area possible. All xenoliths investigated are spinel peridotites, mostly with protogranular textures (although some samples are porphyroclastic or equigranular). Most samples are nominally anhydrous although minor amphibole is present in some xenolith suites. Major element compositions of the individual minerals were determined by microprobe. Two-pyroxene temperatures (BKN) range from 750° to ~1200° C. Ferric iron contents of spinel were determined by Mössbauer spectroscopy and gave a range of Fe3+/ Fetot from 0.191 to 0.418, with a conservative uncertainty of ±0.02. These data were used to calculate oxygen fugacity (fO2) of the peridotites using the Nell-Wood calibration for the equilibrium between olivine, orthopyroxene and spinel (Wood et al. 1990) and are referenced to the fayalite-magnetite-quartz (FMQ) redox buffer. Preliminary results yield ?log(fO2) values between FMQ-0.17 and FMQ+1.65 log units. In this fO2 range propagated uncertainties are on the order of 0.1 log units. Although there is some overlap, localities from the northern block tend to record higher values (>FMW+0.9). In the south, fO2values from a number of localities cluster around FMQ+0.3 to FMQ+0.6, with higher values associated with the occurrence of amphibole in the xenoliths. The higher values (>FMQ+1) testify to localised metasomatic interaction in the SCLM, possibly related to melt migration during earlier phases of magmatic activity in the region. This hypothesis is also consistent with lower fO2 values observed at one locality (Fraisse) on the northern block that is significantly older and thus sampled the mantle prior to the subsequent metasomatic activity in this block of SCLM. Downes H., Reichow M.K., Mason P.R.D., Beard A.D., Thirlwall M.F. (2003) Mantle domains in the lithosphere beneath the French Massif Central: trace element and isotopic evidence from mantle clinopyroxenes. Chem. Geol., 200, 71-87. Lenoir, X., Garrido, C.J., Bodinier, J.-L., Dautria, J.-M. (2000) Contrasting lithospheric mantle domains beneath the Massif Central (France) revealed by geochemistry of peridotite xenoliths. Earth Planet. Sci. Lett. 181, 359-375. Wood B.J., Bryndzia L.T., Johnson K.E. (1990) Mantle oxidation state and its relation to tectonic environment. Science, 248, 337-345.

Uenver-Thiele, L.; Woodland, A. B.; Downes, H.; Altherr, R.

2012-04-01

244

Mineral compositions of plutonic rocks from the Lewis Hills massif, Bay of Islands ophiolite  

NASA Technical Reports Server (NTRS)

Mineral compositions of residual and cumulate rocks from the Lewis Hills massif of the Bay of Islands ophiolite complex are reported and interpreted in the context of magnetic processes involved in the geochemical evolution of spatially associated diabase dikes. The mineral compositions reflect greater degrees of partial melting than most abyssal peridotites do and appear to represent the most depleted end of abyssal peridotite compositions. Subsolidus equilibration between Cr-Al spinal and olivine generally has occurred at temperatures of 700 to 900 C. The spinel variations agree with the overall fractionation of basaltic magmas producing spinels with progressively lower Cr numbers. The compositions of clinopyroxenes suggest that the fractionation of two different magma series produced the various cumulate rocks.

Smith, Susan E.; Elthon, Don

1988-01-01

245

Crystal structure of hydrogen-bearing vuonnemite from the Lovozero alkaline massif  

SciTech Connect

Hydrogen-bearing vuonnemite from the Shkatulka hyperagpaitic pegmatite (the Lovozero alkaline massif, Kola Peninsula) was studied by single-crystal X-ray diffraction. The triclinic unit-cell parameters are as follows: a = 5.4712(1) Angstrom-Sign , b = 7.1626(1) Angstrom-Sign , c = 14.3702(3) Angstrom-Sign , {alpha} = 92.623(2) Degree-Sign , {beta} = 95.135(1) Degree-Sign , {gamma} = 90.440(1) Degree-Sign , sp. gr. P1, R = 3.4%. The Na{sup +} cations and H{sub 2}O molecules are ordered in sites between the packets. The water molecules are hydrogen bonded to the PO{sub 4} tetrahedra.

Rastsvetaeva, R. K., E-mail: rast@ns.crys.ras.ru; Aksenov, S. M.; Verin, I. A. [Russian Academy of Sciences, Shubnikov Institute of Crystallography (Russian Federation); Lykova, I. S. [Moscow State University (Russian Federation)

2011-05-15

246

Physical-Chemical Factors Affecting the Low Quality of Natural Water in the Khibiny Massif  

NASA Astrophysics Data System (ADS)

One peculiarity of the Khibiny Massif is its spatial location. Rising over 1000 m above the surrounding hilly land and thus obstructing the passage of air masses, it promotes condensation and accumulation of surface and underground water. Annual precipitation here amounts to 600-700 mm in the valleys and up to 1600 mm on mountainous plateaus. Using this water for drinking and household purposes is problematic due to excess Al and F concentrations and high pH values. Now it is known that in its profile, the Massif is represented by three hydrogeological subzones: the upper (aerated), medium and lower ones. The upper subzone spreads throughout the Massif and is affected by the local drainage network and climatic conditions. The medium subzone is permanently saturated with underground water flowing horizontally to sites of discharge at the level of local river valleys and lakes. The fissure-vein water in the lower subzone is confined to tectonic fractures and faults in the so far underexplored, deeper parts of the Massif. Being abundant, this water ascends under high pressure. At places, water has been observed spurting from as deep as 700 m, and even 960 m. In the latter case, the temperature of ascending water was higher than 18 centigrade (Hydrogeology of the USSR, V. 27, 1971). This work was undertaken to reveal the nature of the low quality of water in the Khibiny by using physical-chemical modeling (software package Selector, Chudnenko, 2010). Processes of surface and underground water formation in the Khibiny were examined within a physical-chemical model (PCM) of the "water-rock-atmosphere-hydrogen" system. In a multi-vessel model used, each vessel represented a geochemical level of the process interpreted as spatiotemporal data - ? (Karpov, 1981). The flow reactor consisted of 4 tanks. In the first tank, water of the Kuniok River (1000 L) interacted with atmosphere and an organic substance. The resulting solution proceeded to tanks 2-4 containing with underlying rocks (100g of each) to interact with them following the preset process level, the water-rock ratio being ? = 1.0; 0.8; 0.6; 0.2 at temperatures (5, 5, 3, 3 centigrade) and pressures (1, 2, 2, 3 bar), respectively. The model had been reliably verified in the aeration zone monitored in the course of the years 2001 and 2010. Analysis of the chemical composition of deeper water-bearing strata has required to increase the intensity of the water-rock interactions in tank 3 (from 0.2 to 0) and tank 4 (from 0 to -0.2) and simultaneously increase the temperature: (5, 10, 10 centigrade) in the third and (10, 18, 25 centigrade) in the fourth. At the value of ?= -0.2 in the temperature range of 18-25 centigrade, the component contents in tank 4 were observed to change (mg/l): Al (8.10-4 -1.10-3), HCO3- (67-69), Na (25-26,9), Cl (6-6,38), F(0.522-0.882) giving rise to new mineral phases, which agreed with the monitoring data of 1996-1997. The pH values in this case were close to 9. Our findings suggest that factors contributing to changing redox conditions, responsible for the formation of soda and abrupt increment of HCO3-, fluorine and aluminum concentrations, are time and temperature.

Mazukhina, Svetlana; Masloboev, Vladimir; Chudnenko, Konstantin; Maksimova, Viktoriia; Belkina, Natalia

2014-05-01

247

Volcanic evolution of the submarine super volcano, Tamu Massif of Shatsky Rise: New insights from Formation MicroScanner logging imagery  

NASA Astrophysics Data System (ADS)

Massif, the southernmost plateau of Shatsky Rise, is recently reported as the largest single volcano known on Earth. This work seeks to understand the type of volcanism necessary to form such an anomalously large single volcano by integrating core and high-resolution wireline logging data. In particular, resistivity imagery obtained by the Formation MicroScanner, in Integrated Ocean Drilling Program Hole U1347A, located on the eastern flank of Tamu Massif, was used to construct a logging-based volcanostratigraphy. This model revealed two different volcanic stages formed Tamu Massif: (i) the core part of the massif's basaltic basement was formed by a "construction phase" of volcanism with cyclic eruption events from a steady state magma supply and (ii) the very topmost basaltic section was formed by a "depositional phase" of volcanism during which long-traveling lava flows were deposited from a distant eruption center.

Tominaga, Masako; Iturrino, Gerardo; Evans, Helen F.

2015-01-01

248

Petrology of low pressure granulites from the Lichtenberg and Sauwald zone, Bohemian Massif, Upper Austria  

NASA Astrophysics Data System (ADS)

The Bohemian Massif in Upper Austria exposes low pressure granulite facies rocks which belong to the Moldanubian Unit and were metamorphosed during the last stage of the Variscan orogeny. The investigated Lichtenberg (northwest of Linz) and Sauwald (south of the river Danube) zones comprise mainly paragneisses. However, most of these rocks underwent high degrees of melting forming meta- and diatexites ("Perlgneise"). Al-rich metapelites, which are suitable for precise PT and PT-path determinations, can be found in various localities throughout the whole unit. In this study samples from the cliffs along the Danube valley between Linz and Wilhering and from Werndorf (close to Schärding) were sampled and investigated petrographically in detail. Since garnets are rare and usually consumed by cordierite, a sample with unusual large garnets was of special interest. A chemical zoning profile across the diameter of the c. 1cm large garnet showed an elevated Ca-plateau (Xgrs=0.06) in the core which decreased discontinuously towards the rim to Xgrs=0.02. Almandine, pyrope and spessartine components do not show any pronounced zoning pattern. Most of the smaller garnet grains in other samples are also homogeneous in composition with a slight Xalm increase and Xprp decrease at the rims, typical for retrograde diffusional zoning. The migmatic gneisses and cordierite-garnet-sillimanite-granulites as well as mafic granulites were used for geothermobarometric calculations. Metamorphic conditions of around 770°C to 850°C and 0.5-0.6 GPa could be obtained, which are similar to the values obtained by Tropper et al. (2006). P. Tropper I. Deibl F. Finger R. Kaindl (2006). P-T-t evolution of spinel-cordierite-garnet gneisses from the Sauwald Zone (Southern Bohemian Massif, Upper Austria): is there evidence for two independent late-Variscan low-P / high-T events in the Moldanubian Unit? Int J Earth Sci (Geol Rundsch) (2006) 95: 1019-1037.

Sorger, Dominik; Daghighi, Donia; Simic, Katica; Hauzenberger, Christoph; Linner, Manfred; Fritz, Harald

2013-04-01

249

Homogeneous /sup 18/O enrichment of the Marcy Anorthosite Massif, Adirondack Mountains, New York  

SciTech Connect

The Marcy Anorthosite Massif in the Adirondack Mountains, New York, is a composite intrusion that was metamorphosed to granulite facies at approx. 1.1 Ga. The massif is dominantly anorthosite but ranges from anorthosite (1-10% mafics) to oxide-rich pyroxenite layers (up to 98% mafics). In the St Regis Quad (SRQ) systematic variations in the percentage of mafics (POM) roughly parallel the foliation and increase toward the contacts (Davis, 1971). In 47 SRQ samples studied the POM varies from 2-25%; garnet ranges from 0-11%, pyroxene from <1-16% and oxides from <1-8%. Percent phenocrysts varies between 1-80. The Port Kent-Westport Unit (PKW) and an associated hybrid unit show significantly greater textural variability. The POM Varies from 1-50%; garnet ranges from 0-18%, pyroxene from 0-15%, oxides from 0-3% and phenocrysts vary from 0-80%. A total of 28 unaltered plagioclase phenocrysts have been analyzed for delta/sup 18/O: in 13 SRQ samples delta/sup 18/O = 9.0-9.8 (x=9.4. sigma=0.2) and in 15 samples from the PKW and hybrid units values of delta/sup 18/O=8.5-10.5 (x=9.5.sigma0.5). No correlations exist between the modal parameters and delta/sup 18/O. The results from SRQ demonstrate an extreme homogeneity suggesting for the first time a pristine magmatic character which is supported by the virtual absence of metasedimentary inclusions. This contrasts with PKW where inclusions are common and delta/sup 18/O values are more heterogeneous. Further analyses will evaluate the possibility of an anomalous source region as a cause of the /sup 18/O enrichment in the anorthosite.

Morrison, J.; Valley, J.W.

1985-01-01

250

Proterozoic massif anorthosites and related rocks in Labrador: the anorthosite-charnockite connection  

SciTech Connect

Massif anorthosites of Labrador are closely associated in space and time with voluminous, felsic, fayalite- and ferrous pyroxene-bearing igneous rocks. These include charnockites, monzonites, biotite-hornblende granites, and locally syenites. Igneous charnockites form major parts of some of the granitic complexes. In Mistastin batholith for example, charnockitic assemblages comprise about 35% of a total area of 6500 sq. km. Feldspar pairs and coexisting fayalite-opx-qtz in these rocks indicate P and T near 3.5 kb, 750/sup 0/C, assumed to represent near solidus equilibration. Diorites and monzonites intruded by charnockite have mesoperthites implying crystallization T>900/sup 0/C presumably recording earlier stages of crystallization. Oxide and silicate assemblages indicate redox conditions between FMQ and WM oxygen buffers and water pressures well below Ptotal. Younger biotite-hornblende granites and quartz syenites lack Ti-mt. but retain fayalite suggesting that magmatic crystallization was largely closed to water and oxygen. Initial Sr isotope ratios in charnockite-granite suites of central labrador support derivation of the magmas largely or entirely from crustal source rocks. Compositions of mafic silicates and plagioclase, associated Fe-Ti oxide concentrations, trace elements and Sr isotopes in massif anorthosites are in accord with the rocks being crystallization products of substantially fractionated, originally more mafic, mantle magmas. Close association of high temperature, water-poor, reduced crustal melts is consistent with a fusion process in which heat supply and oxygen buffering were controlled by fractional crystallization of a substantial body of mafic magma subjacent to continental crust.

Emslie, R.F.

1985-01-01

251

Subcontinental rift initiation and ocean-continent transitional setting of the Dinarides and Vardar zone: Evidence from the Krivaja-Konjuh Massif, Bosnia and Herzegovina  

NASA Astrophysics Data System (ADS)

The Dinaride and Vardar zone ophiolite belts extend from the south-eastern margins of the Alps to the Albanian and Greek ophiolites. Detailed sampling of the Krivaja-Konjuh massif, one of the largest massifs in the Dinaride belt, reveals fertile compositions and an extensive record of deformation at spinel peridotite facies conditions. High Na2O clinopyroxene and spinel-orthopyroxene symplectites after garnet indicate a relatively high pressure, subcontinental origin of the southern and western part of Krivaja, similar to orogenic massifs such as Lherz, Ronda and the Eastern Central Alpine peridotites. Clinopyroxene and spinel compositions from Konjuh show similarities with fertile abyssal peridotite. In the central parts of the massif the spinel lherzolites contain locally abundant patches of plagioclase, indicating impregnation by melt. The migrating melt was orthopyroxene undersaturated, locally converting the peridotites to massive olivine-rich troctolites. Massive gabbros and more evolved gabbro veins cross-cutting peridotites indicate continued melt production at depth. Overall we infer that the massif represents the onset of rifting and early stages of formation of a new ocean basin. In the south of Krivaja very localized chromitite occurrences indicate that much more depleted melts with supra-subduction affinity traversed the massif that have no genetic relationship with the peridotites. This indicates that volcanics with supra-subduction affinity at the margins of the Krivaja-Konjuh massif record separate processes during closure of the ocean basin. Comparison with published compositional data from other Balkan massifs shows that the range of compositions within the Krivaja-Konjuh massif is similar to the compositional range of the western massifs of the Dinarides. The compositions of the Balkan massifs show a west to east gradient, ranging from subcontinental on the western side of the Dinarides to depleted mid-ocean ridge/arc compositions in the Vardar zone in the east. This is consistent with the hypothesis that both ophiolite belts originate in a single ocean, rather than from two separate basins. A distinct decrease in fertility occurs in the south of the Dinarides towards the Albanian ophiolites with supra-subduction affinity.

Faul, Ulrich H.; Garapi?, Gordana; Lugovi?, Boško

2014-08-01

252

Imagerie sismique de la zone de collision hercynienne dans le Sud-Est du Massif armoricain (projet Armor 2\\/programme Géofrance 3D)  

Microsoft Academic Search

Seismic imaging of the Hercynian collision zone in the south-eastern Armorican Massif (Armor 2 project\\/Géofrance 3D Program). The structure of the Hercynian collision zone in the southeast of the Armorican Massif is illustrated by a 70- km long deep seismic profile acquired in September 2000. The profile images a previously unknown south-dipping thrust that brought the Champtoceaux Domain on top

Adnand Bitri; Michel Ballèvre; Jean-Pierre Brun; Jean Chantraine; Denis Gapais; Paul Guennoc; Charles Gumiaux; Catherine Truffert

2003-01-01

253

3. EXTERIOR NORTHEAST CORNER VIEW, FACING SOUTHWEST. BUILDING NO 42 ...  

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

3. EXTERIOR NORTHEAST CORNER VIEW, FACING SOUTHWEST. BUILDING NO 42 GARAGE & TRANSPORTATION MAINTENANCE FACILITY - NASA Industrial Plant, Garage & Transportation Maintenance Facility, 12214 Lakewood Boulevard, Downey, Los Angeles County, CA

254

1. EXTERIOR SOUTHWEST CORNER VIEW, FACING NORTHEAST. BUILDING NO. 42 ...  

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

1. EXTERIOR SOUTHWEST CORNER VIEW, FACING NORTHEAST. BUILDING NO. 42 GARAGE & TRANSPORTATION MAINTENANCE FACILITY - NASA Industrial Plant, Garage & Transportation Maintenance Facility, 12214 Lakewood Boulevard, Downey, Los Angeles County, CA

255

19. PHOTOCOPY OF c. 1920 VIEW LOOKING NORTHEAST. COURTESY OF ...  

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

19. PHOTOCOPY OF c. 1920 VIEW LOOKING NORTHEAST. COURTESY OF GWENDOLYN G. de CLAIRVILLE, HUNTINGTON, WEST VIRGINIA 11743 - Lefferts Tide Mill, Huntington Harbor, Southdown Road, Huntington, Suffolk County, NY

256

OBLIQUE VIEW OF NORTHEAST AND SOUTHEAST SIDES OF HYDROELECTRIC POWER ...  

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

OBLIQUE VIEW OF NORTHEAST AND SOUTHEAST SIDES OF HYDROELECTRIC POWER HOUSE, VIEW TOWARDS WEST - St. Lucie Canal, Lock No. 1, Hydroelectric Power House, St. Lucie, Cross State Canal, Okeechobee Intracoastal Waterway, Stuart, Martin County, FL

257

OBLIQUE VIEW OF NORTHWEST AND NORTHEAST SIDES OF HYDROELECTRIC POWER ...  

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

OBLIQUE VIEW OF NORTHWEST AND NORTHEAST SIDES OF HYDROELECTRIC POWER HOUSE, OLD BYPASS IN BACKGROUND, VIEW TOWARDS SOUTH - St. Lucie Canal, Lock No. 1, Hydroelectric Power House, St. Lucie, Cross State Canal, Okeechobee Intracoastal Waterway, Stuart, Martin County, FL

258

8. NORTHEAST CORNER OF ORIGINAL MILL WITH SMALL ADDITIONS AND ...  

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

8. NORTHEAST CORNER OF ORIGINAL MILL WITH SMALL ADDITIONS AND OUTBUILDINGS. NOTE ORIGINAL DUST CHIMNEY ON RIGHT AND WATER TOWER ON LEFT. - Selma Cotton Mill, 218 Morgan Avenue, Selma, Dallas County, AL

259

1. HOUSE, VIEW TO NORTHEAST, SUMMER KITCHEN AND SMOKE HOUSE ...  

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

1. HOUSE, VIEW TO NORTHEAST, SUMMER KITCHEN AND SMOKE HOUSE ARE IN THE BACKGROUND - Kiel Farmstead, House, East side State Route 4, one half mile south of U.S. Route 64, Mascoutah, St. Clair County, IL

260

NORTHEAST FACADE AND ONESTORY WING FROM PARKING LOT SIDE, VIEW ...  

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

NORTHEAST FACADE AND ONE-STORY WING FROM PARKING LOT SIDE, VIEW FACING SOUTH-SOUTHEAST. - Naval Air Station Barbers Point, Control Tower & Aviation Operations Building, Near intersection of runways between Hangar 110 & Building 115, Ewa, Honolulu County, HI

261

4. VIEW OF WEST SIDE OF POWER HOUSE LOOKING NORTHEAST. ...  

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

4. VIEW OF WEST SIDE OF POWER HOUSE LOOKING NORTHEAST. PHOTOGRAPH TAKEN FROM INSIDE TIPPLE AND CLEANING PLANT. - Eureka No. 40, Powerhouse, West side of State Route 160, Scalp Level, Cambria County, PA

262

Detail of chimney stack, camera facing northeast Naval Training ...  

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

Detail of chimney stack, camera facing northeast - Naval Training Station, Senior Officers' Quarters District, Quarters No. 1, Naval Station Treasure Island, 1 Whiting Way, Yerba Buena Island, San Francisco, San Francisco County, CA

263

PERSPECTIVE VIEW OF LIBRARY IN ENVIRONMENT CONTEXT, LOOKING NORTHEAST FROM ...  

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

PERSPECTIVE VIEW OF LIBRARY IN ENVIRONMENT CONTEXT, LOOKING NORTHEAST FROM THE ROOF OF THE FRANKLIN INSTITUTE - Free Library of Philadelphia, Central Library, 1901 Vine Street, Philadelphia, Philadelphia County, PA

264

92. VIEW OF CHART RECORDERS AND PERSONAL COMPUTER LINING NORTHEAST ...  

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

92. VIEW OF CHART RECORDERS AND PERSONAL COMPUTER LINING NORTHEAST CORNER OF AUTOPILOT ROOM - Vandenberg Air Force Base, Space Launch Complex 3, Launch Operations Building, Napa & Alden Roads, Lompoc, Santa Barbara County, CA

265

VIEW OF PARTIAL FRONT ELEVATION OF MARINE BARRACKS, LOOKING NORTHEAST ...  

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

VIEW OF PARTIAL FRONT ELEVATION OF MARINE BARRACKS, LOOKING NORTHEAST (with scale stick) - Naval Computer & Telecommunications Area Master Station, Eastern Pacific, Radio Transmitter Facility Lualualei, Marine Barracks, Intersection of Tower Drive & Morse Street, Makaha, Honolulu County, HI

266

VIEW OF PARTIAL FRONT ELEVATION OF MARINE BARRACKS, LOOKING NORTHEAST ...  

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

VIEW OF PARTIAL FRONT ELEVATION OF MARINE BARRACKS, LOOKING NORTHEAST (without scale stick). - Naval Computer & Telecommunications Area Master Station, Eastern Pacific, Radio Transmitter Facility Lualualei, Marine Barracks, Intersection of Tower Drive & Morse Street, Makaha, Honolulu County, HI

267

2. DETAIL VIEW OF ANIMAL HOUSE SHOWING NORTHEAST AND SOUTHEAST ...  

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

2. DETAIL VIEW OF ANIMAL HOUSE SHOWING NORTHEAST AND SOUTHEAST FACADES AND CONNECTION TO SOUTHEAST FACADE OF STATION GARAGE. VIEW TO WEST. - VA Medical Center, Aspinwall Division, Animal House, 5103 Delafield Avenue, Aspinwall, Allegheny County, PA

268

Residential system designs for the northeast and southwest  

SciTech Connect

The development of residential photovoltaic power systems as part of the United States Department of Energy photovoltaic program will begin in FY-80. Prototype residential systems for heating, cooling and electric power will be built and evaluated at regional Residential Experiment Stations (RES's). The first RES locations will be in the Northeast and Southwest. The most appropriate system designs for Northeast and Southwest residences have been identified in various studies. Photovoltaic collector systems will be fielded in both the Northeast and Southwest RES facilities. A utility-interactive direct current to alternating current power inverter will be used with no on-site electrical storage. Similar systems using either combined photovoltaic/thermal collectors or separate photovoltaic modules and solar thermal collectors will be fielded at the Northeast RES facility.

Russell, M.C.

1980-01-01

269

1. OVERALL VIEW OF MILK LAKE, LOOKING NORTHEAST High ...  

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

1. OVERALL VIEW OF MILK LAKE, LOOKING NORTHEAST - High Mountain Dams in Upalco Unit, Milk Lake Dam, Ashley National Forest, 9.4 miles Northwest of Swift Creek Campground, Mountain Home, Duchesne County, UT

270

10. LOOKING NORTHEAST AT THE LINDE 400 TONS PER DAY ...  

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

10. LOOKING NORTHEAST AT THE LINDE 400 TONS PER DAY LOW PURITY OXYGEN MAKING PLANT IN THE LOW PURITY BULK OXYGEN BUILDING. - U.S. Steel Duquesne Works, Fuel & Utilities Plant, Along Monongahela River, Duquesne, Allegheny County, PA

271

Credit BG. Southeast and northeast facades of concrete block structure ...  

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

Credit BG. Southeast and northeast facades of concrete block structure built in the late 1960s. It is now used to store miscellaneous equipment - Edwards Air Force Base, North Base, Liquid Oxygen Storage Facility, Second Street, Boron, Kern County, CA

272

21. VIEW OF TENNIS COURTS LOOKING NORTHEAST FROM ROOF OF ...  

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

21. VIEW OF TENNIS COURTS LOOKING NORTHEAST FROM ROOF OF BUILDING 8970 (CREW READINESS BUILDING). - Loring Air Force Base, Alert Area, Southeastern portion of base, east of southern end of runway, Limestone, Aroostook County, ME

273

VIEW OF BUILDING 221 (TENNIS COURTS) FROM NORTHEAST CORNER, BUILDING ...  

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

VIEW OF BUILDING 221 (TENNIS COURTS) FROM NORTHEAST CORNER, BUILDING 24 IN BACKGROUND, FACING SOUTHWEST - Roosevelt Base, Tennis Courts, Corner of Reeves Avenue & Pennsylvania Street, Long Beach, Los Angeles County, CA

274

4. View from bridlepath looking northeast showing detail of castiron ...  

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

4. View from bridlepath looking northeast showing detail of cast-iron gothic motifs in spandrel - Central Park Bridges, Gothic Arch, Spanning bridlepath south of tennis courts at northwest edge of Reservoir, Central Park, New York, New York County, NY

275

2. DETAIL OF CONVEYOR BELT PATH AND CATWALK, NORTHEAST VIEW. ...  

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

2. DETAIL OF CONVEYOR BELT PATH AND CATWALK, NORTHEAST VIEW. - Vanadium Corporation of America (VCA) Naturita Mill, Grinding Rod Mill, 3 miles Northwest of Naturita, between Highway 141 & San Miguel River, Naturita, Montrose County, CO

276

2. VIEW TO NORTHEAST (ORE RECEIVING PLATFORM OUT OF VIEW ...  

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

2. VIEW TO NORTHEAST (ORE RECEIVING PLATFORM OUT OF VIEW TO RIGHT). - Vanadium Corporation of America (VCA) Naturita Mill, Sampling Building & Ore Receiving Platform, 3 miles Northwest of Naturita, between Highway 141 & San Miguel River, Naturita, Montrose County, CO

277

6. INTERIOR OF NORTHEAST ROOM AND MEZZANINE, SOUTHWEST VIEW. ...  

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

6. INTERIOR OF NORTHEAST ROOM AND MEZZANINE, SOUTHWEST VIEW. - Vanadium Corporation of America (VCA) Naturita Mill, Sampling Building & Ore Receiving Platform, 3 miles Northwest of Naturita, between Highway 141 & San Miguel River, Naturita, Montrose County, CO

278

4. VIEW TO NORTHEAST, SKINNER SALT ROASTERS, SAMPLING BUILDING, WATER ...  

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

4. VIEW TO NORTHEAST, SKINNER SALT ROASTERS, SAMPLING BUILDING, WATER TOWER, AND OFFICE BUILDING. - Vanadium Corporation of America (VCA) Naturita Mill, 3 miles Northwest of Naturita, between Highway 141 & San Miguel River, Naturita, Montrose County, CO

279

1. DETAIL, NORTHEAST VIEW (REMAINDER OF SHAFTTURNING MECHANISM IN FOREGROUND). ...  

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

1. DETAIL, NORTHEAST VIEW (REMAINDER OF SHAFT-TURNING MECHANISM IN FOREGROUND). - Vanadium Corporation of America (VCA) Naturita Mill, Brick Skimmer Salt Roaster, 3 miles Northwest of Naturita, between Highway 141 & San Miguel River, Naturita, Montrose County, CO

280

PERSPECTIVE LOOKING NORTHEAST SHOWING GARAGE ADDITION AND MODIFIED GARAGE ENTRANCES ...  

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

PERSPECTIVE LOOKING NORTHEAST SHOWING GARAGE ADDITION AND MODIFIED GARAGE ENTRANCES - New York State Soldiers & Sailors Home, Building No. 3, Department of Veterans Affairs Medical Center, 76 Veterans Avenue, Bath, Steuben County, NY

281

OBLIQUE PERSPECTIVE LOOKING NORTHEAST OF WEST SIDE OF BUILDING AND ...  

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

OBLIQUE PERSPECTIVE LOOKING NORTHEAST OF WEST SIDE OF BUILDING AND MAIN ENTRANCE ON THE SOUTH - New York State Soldiers & Sailors Home, Building No. 33, Department of Veterans Affairs Medical Center, 76 Veterans Avenue, Bath, Steuben County, NY

282

49. VIEW OF NORTHEAST FRONT AND SOUTHEAST SIDE OF CAPTAIN'S ...  

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

49. VIEW OF NORTHEAST FRONT AND SOUTHEAST SIDE OF CAPTAIN'S GALLEY, LOOKING WEST FROM BEACH, SHOWING NEPTUNE'S LOCKER IN BACKGROUND - Huntington Beach Municipal Pier, Pacific Coast Highway at Main Street, Huntington Beach, Orange County, CA

283

10. LIGHT TOWER, VIEW NORTHEAST FROM LIGHT PLATFORM, SOUTHWEST SIDE ...  

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

10. LIGHT TOWER, VIEW NORTHEAST FROM LIGHT PLATFORM, SOUTHWEST SIDE OF BOAT HOUSE AND KEEPER'S HOUSE, WITH DETAIL OF RAILING IN FOREGROUND - Grindle Point Light Station, Western end of Ferry Road on Grindle Point, Islesboro, Waldo County, ME

284

2. GENERAL VIEW OF COMPLEX FROM SANDPIT LOOKING NORTHEAST, SAND ...  

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

2. GENERAL VIEW OF COMPLEX FROM SANDPIT LOOKING NORTHEAST, SAND DRAINING & DRYING BUILDING (left) AND SAND-SORTING BUILDING (right) - Mill "C" Complex, South of Dee Bennet Road, near Illinois River, Ottawa, La Salle County, IL

285

1. GENERAL VIEW OF COMPLEX FROM SANDPIT LOOKING NORTHEAST, SAND ...  

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

1. GENERAL VIEW OF COMPLEX FROM SANDPIT LOOKING NORTHEAST, SAND DRAINING & DRYING BUILDING (left) AND SAND-SORTING BUILDING (right) - Mill "C" Complex, South of Dee Bennet Road, near Illinois River, Ottawa, La Salle County, IL

286

General view of Antenna Array and building complex, looking northeast ...  

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

General view of Antenna Array and building complex, looking northeast - Over-the-Horizon Backscatter Radar Network, Tulelake Radar Site Receive Sector Six Antenna Array, Unnamed Road West of Double Head Road, Tulelake, Siskiyou County, CA

287

8. Bell house, view southwest, southeast side and northeast front ...  

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

8. Bell house, view southwest, southeast side and northeast front - Burnt Coat Harbor Light Station, At Hackamock Head on Swan's Island opposite Harbor Island at entrance to Burnt Coat Harbor, Swans Island, Hancock County, ME

288

1. Keeper's house, light tower and bell house, view northeast, ...  

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

1. Keeper's house, light tower and bell house, view northeast, northwest and southwest sides - Burnt Coat Harbor Light Station, At Hackamock Head on Swan's Island opposite Harbor Island at entrance to Burnt Coat Harbor, Swans Island, Hancock County, ME

289

3. Oblique view of front (northwest) and left side (northeast) ...  

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

3. Oblique view of front (northwest) and left side (northeast) elevations, looking south. - Downtown Short Pump Grocery, West Broad Street (State Route 250) & Three Chopt Road, Short Pump, Henrico County, VA

290

1. FLAME DEFLECTOR FROM FERROCEMENT APRON, VIEW TOWARDS NORTHEAST. ...  

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

1. FLAME DEFLECTOR FROM FERROCEMENT APRON, VIEW TOWARDS NORTHEAST. - Glenn L. Martin Company, Titan Missile Test Facilities, CaptiveTest Stand D-3, Waterton Canyon Road & Colorado Highway 121, Lakewood, Jefferson County, CO

291

4. VIEW SHOWING UPSTREAM FACE OF DAM, LOOKING NORTHEAST ...  

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

4. VIEW SHOWING UPSTREAM FACE OF DAM, LOOKING NORTHEAST - High Mountain Dams in Upalco Unit, Kidney Lake Dam, Ashley National Forest, 4.7 miles North of Miners Gulch Campground, Mountain Home, Duchesne County, UT

292

2. A LONG VIEW, LOOKING NORTHEAST FROM A SANDBAR LOCATED ...  

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

2. A LONG VIEW, LOOKING NORTHEAST FROM A SANDBAR LOCATED DOWN RIVER OF THE BRIDGE. THE VIEW SHOWS THE WEST OR DOWNSTREAM SIDE. - Cement Plant Road Bridge, Spanning Leatherwood Creek on County Road 50 South, Bedford, Lawrence County, IN

293

Interior, looking northeast Beale Air Force Base, Perimeter Acquisition ...  

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

Interior, looking northeast - Beale Air Force Base, Perimeter Acquisition Vehicle Entry Phased-Array Warning System, Emergency Generator Enclosure, End of Spencer Paul Road, north of Warren Shingle Road (14th Street), Marysville, Yuba County, CA

294

Interior, looking northeast Beale Air Force Base, Perimeter Acquisition ...  

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

Interior, looking northeast - Beale Air Force Base, Perimeter Acquisition Vehicle Entry Phased-Array Warning System, Microwave Equipment Building, End of Spencer Paul Road, north of Warren Shingle Road (14th Street), Marysville, Yuba County, CA

295

13. VIEW NORTHEAST, BUILDING 12 INTERIOR, WIND TUNNEL FAN ASSEMBLY ...  

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

13. VIEW NORTHEAST, BUILDING 12 INTERIOR, WIND TUNNEL FAN ASSEMBLY - Naval Surface Warfare Center, Transonic Wind Tunnel Building, Bounded by Clara Barton Parkway & McArthur Boulevard, Silver Spring, Montgomery County, MD

296

6. VIEW OF VIADUCT, LOOKING NORTHEAST, SHOWING THE UNION PACIFIC ...  

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

6. VIEW OF VIADUCT, LOOKING NORTHEAST, SHOWING THE UNION PACIFIC RAILROAD WAREHOUSE ON THE LEFT - Twentieth Street Viaduct, Spans Platte River Valley between Thirty-third Avenue & Blake Street, Denver, Denver County, CO

297

5. VIEW OF VIADUCT, LOOKING NORTHEAST, SHOWING THE UNION PACIFIC ...  

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

5. VIEW OF VIADUCT, LOOKING NORTHEAST, SHOWING THE UNION PACIFIC RAILROAD WAREHOUSE ON THE LEFT - Twentieth Street Viaduct, Spans Platte River Valley between Thirty-third Avenue & Blake Street, Denver, Denver County, CO

298

GENERAL VIEW LOOKING NORTHEAST SHOWING THE SWITCHYARD OF THE WILSON ...  

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

GENERAL VIEW LOOKING NORTHEAST SHOWING THE SWITCHYARD OF THE WILSON DAM HYDROELECTRIC GENERATING PLANT. - Wilson Dam & Hydroelectric Plant, Spanning Tennessee River at Wilson Dam Road (Route 133), Muscle Shoals, Colbert County, AL

299

VIEW LOOKING NORTHEAST SHOWING A CORNER DETAIL OF THE POWERHOUSE ...  

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

VIEW LOOKING NORTHEAST SHOWING A CORNER DETAIL OF THE POWERHOUSE AND THE SOUTHERN SECTION OF THE DAM. - Wilson Dam & Hydroelectric Plant, Spanning Tennessee River at Wilson Dam Road (Route 133), Muscle Shoals, Colbert County, AL

300

1. VIEW OF NORTHEAST (GABLE END) AND SOUTHEAST WALLS FROM ...  

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

1. VIEW OF NORTHEAST (GABLE END) AND SOUTHEAST WALLS FROM HOOD AVENUE, FACING NORTHWEST. - Fort McPherson, World War II Station Hospital, G. U. Treatment Unit Mess Hall, Thorne & Hood Avenues, Atlanta, Fulton County, GA

301

2. VIEW OF NORTHWEST SIDE SHOWING NORTHEAST (GABLE END) FRONT. ...  

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

2. VIEW OF NORTHWEST SIDE SHOWING NORTHEAST (GABLE END) FRONT. (BUILDING 114 IS VISIBLE ON RIGHT.) - Fort McPherson, World War II Station Hospital, G. U. Treatment Unit Dispensary, Thorne Avenue, Atlanta, Fulton County, GA

302

7. VIEW NORTHEAST, Interior of Power Station, upper level showing ...  

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

7. VIEW NORTHEAST, Interior of Power Station, upper level showing windows on east and north elevations - Bay City Traction & Electric Company, Power Station, 301 Washington Street, Bay City, Bay County, MI

303

2. VIEW OF JOHN HOPE HOMES LOOKING NORTHEAST UP NORTHSIDE ...  

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

2. VIEW OF JOHN HOPE HOMES LOOKING NORTHEAST UP NORTHSIDE DRIVE FROM INTERSECTION OF LEONARD STREET AND NORTHSIDE DRIVE. - John Hope Homes (Public Housing), Bounded by Larkin, Dora, Spelman Streets & Lane, Atlanta, Fulton County, GA

304

NORTHEAST (SIDE) AND NORTHWEST (REAR) ELEVATIONS OF BUILDING. VIEW TO ...  

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

NORTHEAST (SIDE) AND NORTHWEST (REAR) ELEVATIONS OF BUILDING. VIEW TO SOUTH - Plattsburgh Air Force Base, Industrial Wastewater Treatment & Disposal Facility, Off LeMay Road, outside SAC Alert Area, Plattsburgh, Clinton County, NY

305

SOUTHEAST (FRONT) AND NORTHEAST (SIDE) ELEVATIONS OF BUILDING. VIEW TO ...  

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

SOUTHEAST (FRONT) AND NORTHEAST (SIDE) ELEVATIONS OF BUILDING. VIEW TO WEST - Plattsburgh Air Force Base, Industrial Wastewater Treatment & Disposal Facility, Off LeMay Road, outside SAC Alert Area, Plattsburgh, Clinton County, NY

306

11. Northeast front, dock no. 493. View to west. ...  

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

11. Northeast front, dock no. 493. View to west. - Offutt Air Force Base, Looking Glass Airborne Command Post, Nose Docks, On either side of Hangar Access Apron at Northwest end of Project Looking Glass Historic District, Bellevue, Sarpy County, NE

307

VIEW, LOOKING NORTHEAST, OF CHEMISTRY LAB, LOCATED ON MEZZANINE ABOVE ...  

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

VIEW, LOOKING NORTHEAST, OF CHEMISTRY LAB, LOCATED ON MEZZANINE ABOVE AND EAST OF FLOTATION CELLS. MAIN USE WAS SAMPLE ANALYSIS TO DETERMINE OPTIMUM REAGENT MIXES AND QUANTITIES. - Shenandoah-Dives Mill, 135 County Road 2, Silverton, San Juan County, CO

308

SOUTHEAST FRONT AND NORTHEAST SIDE. Looking northwest from top of ...  

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

SOUTHEAST FRONT AND NORTHEAST SIDE. Looking northwest from top of protective berm - Edwards Air Force Base, South Base Sled Track, Water Pump Station, Area "O" at east end, northwest of fuel storage, Lancaster, Los Angeles County, CA

309

INTERIOR VIEW LOOKING NORTHEAST, SHOWING FURNACE NO. 1 (ca. 1910. ...  

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

INTERIOR VIEW LOOKING NORTHEAST, SHOWING FURNACE NO. 1 (ca. 1910. Nameplate reads: "Heroult Electric Furnace, Capacity 6 tons, Built by American Bridge Company, Pencoyd, PA, No. 33") - Braeburn Alloy Steel, Braeburn Road at Allegheny River, Lower Burrell, Westmoreland County, PA

310

3. VIEW OF NORTHEAST CORNER OF THE BUILDING FROM ABOVE, ...  

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

3. VIEW OF NORTHEAST CORNER OF THE BUILDING FROM ABOVE, APPROXIMATELY AT 10TH. FLOOR LEVEL. VIEW OVERLOOKS CORNER OF FRANKLIN AND 15TH STREET. - Pacific Telephone & Telegraph Company Building, 1519 Franklin Street, Oakland, Alameda County, CA

311

View of 175 ton hoisthouse from northeast. Hoist operator's cab ...  

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

View of 175 ton hoist-house from northeast. Hoist operator's cab is in foreground center. - Marshall Space Flight Center, Saturn V Dynamic Test Facility, East Test Area, Huntsville, Madison County, AL

312

8. DETAIL OF NORTHEAST ELEVATION SHOWING NEON TWA SIGN AND ...  

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

8. DETAIL OF NORTHEAST ELEVATION SHOWING NEON TWA SIGN AND ROOF MASTS. LOOKING SOUTHWEST. - TWA Maintenance Hangar, South side of Tinicum Island Road, Philadelphia International Airport, Philadelphia, Philadelphia County, PA

313

86. Mezzanine level looking northeast showing connection between northwest leg ...  

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

86. Mezzanine level looking northeast showing connection between northwest leg of central pylon and main anchorage beam; up-flight of helical stair at right. February 1984. - Statue of Liberty, Liberty Island, Manhattan, New York, New York County, NY

314

7. Office and warehouse building. South side. View to northeast. ...  

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

7. Office and warehouse building. South side. View to northeast. - Conrad Refining Company Oil Refinery, Office & Warehouse Building, 60 feet northwest of centerline at Montana Secondary Highway 219, Conrad, Pondera County, MT

315

2. NORTHEAST CORNER OF LARD REFINERY (CONNECTING BUILDING ON THE ...  

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

2. NORTHEAST CORNER OF LARD REFINERY (CONNECTING BUILDING ON THE RIGHT) - Wilson's Oil House, Lard Refinery, & Edible Fats Factory, Lard Refinery, 2801 Southwest Fifteenth Street, Oklahoma City, Oklahoma County, OK

316

3. VIEW TO SOUTHWEST (NORTHEAST CORNER OF EDIBLE FATS FACTORY) ...  

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

3. VIEW TO SOUTHWEST (NORTHEAST CORNER OF EDIBLE FATS FACTORY) - Wilson's Oil House, Lard Refinery, & Edible Fats Factory, Edible Fats Factory, 2801 Southwest Fifteenth Street, Oklahoma City, Oklahoma County, OK

317

Northeast side and northwest end. View to south Offutt ...  

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

Northeast side and northwest end. View to south - Offutt Air Force Base, Looking Glass Airborne Command Post, Water Supply Building, Southwest of West corner of Operational Apron, Project Looking Glass Historic District, Bellevue, Sarpy County, NE

318

Southeast end and northeast side. View to northwest Offutt ...  

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

Southeast end and northeast side. View to northwest - Offutt Air Force Base, Looking Glass Airborne Command Post, Water Supply Building, Southwest of West corner of Operational Apron, Project Looking Glass Historic District, Bellevue, Sarpy County, NE

319

2. View looking northeast at Dixie Cotton Mill warehouses. Note ...  

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

2. View looking northeast at Dixie Cotton Mill warehouses. Note firestops between sections of the building to prevent fire from spreading. - Dixie Cotton Mill, Warehouses, 710 Greenville Street, La Grange, Troup County, GA

320

View from southwest to northeast of cooling towers for perimeter ...  

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

View from southwest to northeast of cooling towers for perimeter acquisition radar building and PAR power plant - Stanley R. Mickelsen Safeguard Complex, Cooling Tower, In Limited Access Area, between Service Roads D & A, Nekoma, Cavalier County, ND

321

BASEMENT, A view looking northeast that captures the storage lockers ...  

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

BASEMENT, A view looking northeast that captures the storage lockers in the woman's side of the change room (Room 119A) - Department of Energy, Mound Facility, Isolated Building (I Building), One Mound Road, Miamisburg, Montgomery County, OH

322

9. CLIFTON HILL, LOOKING NORTHEAST ACROSS STREAM FROM HAZEL WALK ...  

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

9. CLIFTON HILL, LOOKING NORTHEAST ACROSS STREAM FROM HAZEL WALK Photocopy of photograph, 1930s National Park Service, National Capital Region files - Dumbarton Oaks Park, Thirty-second & R Streets Northwest, Washington, District of Columbia, DC

323

1. EXTERIOR VIEW, LOOKING NORTH NORTHEAST ALONG EASTERN VALLEY ROAD, ...  

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

1. EXTERIOR VIEW, LOOKING NORTH NORTHEAST ALONG EASTERN VALLEY ROAD, WITH FRONT AND SIDE (WEST) ELEVATIONS AND REAR ADDITIONS - Thomas H. Owen House, Eastern Valley Road West of State Road 150, McCalla, Jefferson County, AL

324

2. General view of Morrison Bridge, looking northeast, with Tom ...  

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

2. General view of Morrison Bridge, looking northeast, with Tom McCall Riverfront Park in foreground. - Morrison Bridge, Spanning Willamette River on Morrison & Alder Streets, Portland, Multnomah County, OR

325

10. Detail of truss located on top the northeast pier, ...  

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

10. Detail of truss located on top the northeast pier, looking southwest. - Bridge No. 4800, Spanning Minnesota River on Trunk Highway 4 between Brown & Nicollet Counties, Sleepy Eye, Brown County, MN

326

Looking southwest, this photograph demonstrates the northeast corner of E ...  

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

Looking southwest, this photograph demonstrates the northeast corner of E Building, with a glimpse of part of the east entrance - Department of Energy, Mound Facility, Electronics Laboratory Building (E Building), One Mound Road, Miamisburg, Montgomery County, OH

327

Detail of northeast corner with spandrel and window pattern; camera ...  

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

Detail of northeast corner with spandrel and window pattern; camera facing southwest. - Mare Island Naval Shipyard, Defense Electronics Equipment Operating Center, I Street, terminus west of Cedar Avenue, Vallejo, Solano County, CA

328

4. BUILDING 324, REAR YARD AREA, FROM NEAR NORTHEAST CORNER ...  

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

4. BUILDING 324, REAR YARD AREA, FROM NEAR NORTHEAST CORNER OF BUILDING 323, LOOKING EAST. - Oakland Naval Supply Center, Commanding Officers Residences, Between E & F Streets, West of Fourth Street, Oakland, Alameda County, CA

329

View northeast, oblique contextual view of hoboken rail yard in ...  

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

View northeast, oblique contextual view of hoboken rail yard in immediate background, Manhattan Skyline in distance. - Delaware, Lackawanna & Western Railroad Freight & Rail Yard, Long Slip Canal, New Jersey Transit Hoboken Rail Yard, Hoboken, Hudson County, NJ

330

15. Interior view of basement boiler room. View to northeast. ...  

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

15. Interior view of basement boiler room. View to northeast. - U.S. Customs Service Port of Roosville, Main Port Building, U.S. Highway 93, immediately south of U.S.-Canadian border, Eureka, Lincoln County, MT

331

8. DETAIL VIEW, LOOKING NORTHEAST, SHOWING OUTRIGGERS FOR LATERAL BRACING ...  

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

8. DETAIL VIEW, LOOKING NORTHEAST, SHOWING OUTRIGGERS FOR LATERAL BRACING FOR TRUSSES AND BOTTOM CHORD CONNECTIONS. - White Bowstring Arch Truss Bridge, Spanning Yellow Creek at Cemetery Drive (Riverside Drive), Poland, Mahoning County, OH

332

1. HOUSING UNIT NO. 6, FROM NORTHEAST Sublet Mine ...  

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

1. HOUSING UNIT NO. 6, FROM NORTHEAST - Sublet Mine No. 6, Housing Unit No. 6, East side of Willow Creek Valley, east of County Road No. 306, 3 miles north of U.S. Highway 189, Kemmerer, Lincoln County, WY

333

Detail of northeast wing wall and guiderail. The section of ...  

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

Detail of northeast wing wall and guiderail. The section of the wing wall in the foreground is a historic extension of this element. - Chester County Bridge No. 225, Spanning Tweed Creek at Hopewell Road, Oxford, Chester County, PA

334

1. INTAKE CHANNEL LOOKING NORTHEAST; WATER FROM BEAVER BROOK ENTERS ...  

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

1. INTAKE CHANNEL LOOKING NORTHEAST; WATER FROM BEAVER BROOK ENTERS THE INTAKE CHANNEL HERE. - Hondius Water Line, 1.6 miles Northwest of Park headquarters building & 1 mile Northwest of Beaver Meadows entrance station, Estes Park, Larimer County, CO

335

13. SETTLING TANK, OVERFLOW DITCH, NORTHEAST SIDE; OVERFLOW DITCH RETURNED ...  

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

13. SETTLING TANK, OVERFLOW DITCH, NORTHEAST SIDE; OVERFLOW DITCH RETURNED EXCESS WATER TO BEAVER BROOK. - Hondius Water Line, 1.6 miles Northwest of Park headquarters building & 1 mile Northwest of Beaver Meadows entrance station, Estes Park, Larimer County, CO

336

8. VIEW OF ROOM 101 (ASSEMBLY ROOM) FROM NORTHEAST CORNER ...  

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

8. VIEW OF ROOM 101 (ASSEMBLY ROOM) FROM NORTHEAST CORNER SHOWING FLEXIBLE AIR-CONDITIONING DUCT - Vandenberg Air Force Base, Space Launch Complex 3, Vehicle Support Building, Napa & Alden Roads, Lompoc, Santa Barbara County, CA

337

7 CFR 1001.2 - Northeast marketing area.  

Code of Federal Regulations, 2010 CFR

...2010-01-01 2009-01-01 true Northeast marketing area. 1001.2 Section 1001.2 Agriculture...Department of Agriculture (Continued) AGRICULTURAL MARKETING SERVICE (Marketing Agreements and Orders; Milk), DEPARTMENT...

2010-01-01

338

6. DECK #4 TOPSIDE FROM NORTHEAST CORNER END PIECE FOR ...  

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

6. DECK #4 TOPSIDE FROM NORTHEAST CORNER END PIECE FOR ROBOTIC ARM FOR ANCHORING ASTRONAUT FOR MECHANICAL WORK. - Marshall Space Flight Center, Neutral Buoyancy Simulator Facility, Rideout Road, Huntsville, Madison County, AL

339

45. SELAH LINE, LOOKING NORTHEAST, SHOWING END OF LINE AT ...  

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

45. SELAH LINE, LOOKING NORTHEAST, SHOWING END OF LINE AT LARSON FRUIT COMPANY - Yakima Valley Transportation Company Interurban Railroad, Connecting towns of Yakima, Selah & Wiley City, Yakima, Yakima County, WA

340

44. PIAZZA, SECOND FLOOR, LOOKING NORTHEAST. AT LEFT IS ORIGINAL ...  

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

44. PIAZZA, SECOND FLOOR, LOOKING NORTHEAST. AT LEFT IS ORIGINAL FOLDING DOOR. AT RIGHT IS ORIGINAL WINDOW (FRAME AND SASH) - Kid-Chandler House, 323 Walnut Street, Philadelphia, Philadelphia County, PA

341

9. DETAIL VIEW OF ROLLING EXPANSION JOINT, NORTHEAST BASE OF ...  

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

9. DETAIL VIEW OF ROLLING EXPANSION JOINT, NORTHEAST BASE OF SECOND CLOSED SPANDREL ARCH AT JUNCTION OF OPEN SPANDREL ARCH, LOOKING EAST - Virgin River Bridge, Spanning Virgin River on State Highway 9, Hurricane, Washington County, UT

342

3. VIEW, LOOKING NORTHEAST, SHOWING A SMALL FIELDSTONE DAM (KNOWN ...  

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

3. VIEW, LOOKING NORTHEAST, SHOWING A SMALL FIELD-STONE DAM (KNOWN LOCALLY AS DAM NO. 2), BUILT BY THE CCC - J. Clark Salyer National Wildlife Refuge Dams, Along Lower Souris River, Kramer, Bottineau County, ND

343

7. VIEW OF DAM 320, LOOKING NORTHEAST ALONG THE CREST ...  

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

7. VIEW OF DAM 320, LOOKING NORTHEAST ALONG THE CREST OF THE SPILLWAY FROM THE SOUTHWEST END - J. Clark Salyer National Wildlife Refuge, Dam 320, Along Lower Souris River, Kramer, Bottineau County, ND

344

Building 904, oblique view to northeast, 210mm lens Travis ...  

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

Building 904, oblique view to northeast, 210mm lens - Travis Air Force Base, Base Spares Warehouse No. 1, Dixon Avenue & W Street, Armed Forces Special Weapons Project Q Area, Fairfield, Solano County, CA

345

3. EXTERIOR VIEW OF THE NORTHEAST RADAR DOME COMPLEX, STRUCTURE ...  

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

3. EXTERIOR VIEW OF THE NORTHEAST RADAR DOME COMPLEX, STRUCTURE 411, LOOKING NORTH. - Mill Valley Air Force Station, Radar Domes, East Ridgecrest Boulevard, Mount Tamalpais, Mill Valley, Marin County, CA

346

9. VIEW NORTHEAST (32 DEGREES) OF SOUTHWEST FACADE AT RCA ...  

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

9. VIEW NORTHEAST (32 DEGREES) OF SOUTHWEST FACADE AT RCA COMMUNICATION REC. STATION. BRACKETS WERE FOR LEADS ON TERMINATION FRAMES THAT WERE REMOVED. - Marconi Radio Sites, Receiving, Point Reyes Station, Marin County, CA

347

15. SOUTHEAST AND NORTHEAST WALLS OF CREW SHELTER LOCATED BETWEEN ...  

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

15. SOUTHEAST AND NORTHEAST WALLS OF CREW SHELTER LOCATED BETWEEN THE PURSUIT PLANE BAYS OF AR-9. - Edwards Air Force Base, South Base, Rammed Earth Aircraft Dispersal Revetments, Western Shore of Rogers Dry Lake, Boron, Kern County, CA

348

4. PERSPECTIVE VIEW TO THE NORTHEAST OF THE CREW SHELTER ...  

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

4. PERSPECTIVE VIEW TO THE NORTHEAST OF THE CREW SHELTER IN AR-8. - Edwards Air Force Base, South Base, Rammed Earth Aircraft Dispersal Revetments, Western Shore of Rogers Dry Lake, Boron, Kern County, CA

349

VIEW LOOKING NORTHEAST AT EARTH MOUND. NOTE THE RECTANGULAR OPENINGS ...  

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

VIEW LOOKING NORTHEAST AT EARTH MOUND. NOTE THE RECTANGULAR OPENINGS USED FOR OBSERVATION EQUIPMENT AND PERISCOPE TOPS. - Marshall Space Flight Center, Redstone Rocket (Missile) Test Stand, Dodd Road, Huntsville, Madison County, AL

350

1. GENERAL VIEW, FROM NORTHEAST. FRONT (with screened porch) FACES ...  

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

1. GENERAL VIEW, FROM NORTHEAST. FRONT (with screened porch) FACES EAST. Photocopied from photograph taken August 4, 1965 by Jack Crosby of the Michigan Historical Commission. - Hotel Williams, Williams Log House, Murray Bay, Munising, Alger County, MI

351

FACILITY 847, NORTHWEST END AND NORTHEAST SIDE, QUADRANGLE J, OBLIQUE ...  

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

FACILITY 847, NORTHWEST END AND NORTHEAST SIDE, QUADRANGLE J, OBLIQUE VIEW FACING SOUTH-SOUTH-SOUTHEAST. - Schofield Barracks Military Reservation, Quadrangles I & J Barracks Type, Between Wright-Smith & Capron Avenues near Williston Avenue, Wahiawa, Honolulu County, HI

352

View towards the northeast of coffee beans drying on the ...  

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

View towards the northeast of coffee beans drying on the third floor with hopper and drum type dryer in background - Santaella Coffee Processing Site, Highway 139, Kilometer 10.6, Maraguez, Ponce Municipio, PR

353

SOUTHEAST AND NORTHEAST SIDES. Looking west Edwards Air Force ...  

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

SOUTHEAST AND NORTHEAST SIDES. Looking west - Edwards Air Force Base, Air Force Rocket Propulsion Laboratory, Fuel & Water Tank, Test Area 1-115, northwest end of Saturn Boulevard, Boron, Kern County, CA

354

12. NORTHEAST VIEW OF THE WASTE WATER TREATMENT COMPLEX FOR ...  

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

12. NORTHEAST VIEW OF THE WASTE WATER TREATMENT COMPLEX FOR THE PRIMARY AND 22 BAR MILLS. - U.S. Steel Duquesne Works, Auxiliary Buildings & Shops, Along Monongahela River, Duquesne, Allegheny County, PA

355

51. LOOKING NORTHEAST AT EIMCO WASTE WATER TREATMENT THICKENER No. ...  

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

51. LOOKING NORTHEAST AT EIMCO WASTE WATER TREATMENT THICKENER No. 2, ELECTRIC POWERHOUSE No. 2, AND OUTDOOR ELECTRICAL SUBSTATION IN BACKGROUND. (Jet Lowe) - U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela River, Duquesne, Allegheny County, PA

356

12. Oblique view of northeast facade, showing missing rain gutter, ...  

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

12. Oblique view of northeast facade, showing missing rain gutter, deteriorated slate roof, broken windows in tower; view west-northwest, 90mm lens. - Southern Pacific Depot, 559 El Camino Real, San Carlos, San Mateo County, CA

357

Credit BG. View looks northeast (56°) across substation foundation toward ...  

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

Credit BG. View looks northeast (56°) across substation foundation toward Building 4318 (Warehouse) and Building 4401 (Hangar No. 1) - Edwards Air Force Base, North Base, Electrical Substation, Second & D Streets, Boron, Kern County, CA

358

19. FIRST FLOOR, NORTHEAST ROOM LOOKING EAST, DETAIL OF EXPOSED ...  

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

19. FIRST FLOOR, NORTHEAST ROOM LOOKING EAST, DETAIL OF EXPOSED LOG WALL AND RUBBLE FOUNDATION - Stiegel House, East side State Route 419, North of intersection of State Route 419 & State Route 897 (Heidelberg Township), Schaefferstown, Lebanon County, PA

359

50. POWDER MAGAZINE, VIEW THROUGH DOORWAY ENTRANCE FROM NORTHEAST TO ...  

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

50. POWDER MAGAZINE, VIEW THROUGH DOORWAY ENTRANCE FROM NORTHEAST TO SOUTHWEST REAR. NOTE RUBBLE STONE WALL IN AIR VENTILATION PASSAGE THROUGH ACCESS IN REAR OF MAGAZINE. - Fort Monroe, Fortress, Hampton, Hampton, VA

360

3. View from northeast corner, Canisteo and Spruce Streets. Photo ...  

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

3. View from northeast corner, Canisteo and Spruce Streets. Photo shows the garage area (Building #5) with sawtooth roofline and front elevation of Buildings #6 and #1. - Merrill Silk Mill, 233 Canisteo Street, Hornell, Steuben County, NY

361

12. DETAIL VIEW OF NORTHEAST CORNER, SHOWING HIP VERTICAL, INCLINED ...  

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

12. DETAIL VIEW OF NORTHEAST CORNER, SHOWING HIP VERTICAL, INCLINED END POST, AND UPPER CHORD - Kennan-Jump River Bridge, Spanning South fork of Jump River on County Highway "N", Kennan, Price County, WI

362

1. VIEW NORTHEAST, LEFT TO RIGHT COLD CALIBRATION TEST STAND ...  

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

1. VIEW NORTHEAST, LEFT TO RIGHT COLD CALIBRATION TEST STAND COLD CALIBRATION BLOCKHOUSE IN FOREGROUND. - Marshall Space Flight Center, East Test Area, Cold Calibration Test Stand, Huntsville, Madison County, AL

363

4. CONTEXTUAL VIEW TO NORTHEAST: UNIT 4, WITH BELTDRIVEN BACKUP ...  

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

4. CONTEXTUAL VIEW TO NORTHEAST: UNIT 4, WITH BELT-DRIVEN BACKUP SYSTEM ADJACENT TO GENERATOR - Washington Water Power Company Monroe Street Plant, Units 4 & 5, South Bank Spokane River, below Monroe Street Bridge, Spokane, Spokane County, WA

364

FACING NORTHEAST OF NORTHERN BOUNDARY OF PARK Candler Park ...  

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

FACING NORTHEAST OF NORTHERN BOUNDARY OF PARK - Candler Park Historic District, Roughly bounded by Moreland, Dekalb, McLendon & Harold Avenues, Matthews Street & Clifton Terrace, Atlanta, Fulton County, GA

365

FACING NORTHEAST ACROSS NORTHERN END OF PARK TOWARDS ITS NORTHERN ...  

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

FACING NORTHEAST ACROSS NORTHERN END OF PARK TOWARDS ITS NORTHERN CORNER - Candler Park Historic District, Roughly bounded by Moreland, Dekalb, McLendon & Harold Avenues, Matthews Street & Clifton Terrace, Atlanta, Fulton County, GA

366

7. General oblique view of south side, view to northeast ...  

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

7. General oblique view of south side, view to northeast showing dock area and canopy; note projecting entrance at egg candling room - Fort Hood, World War II Temporary Buildings, Cold Storage Building, Seventeenth Street, Killeen, Bell County, TX

367

44. NORTHEAST VIEW OF IRON DESULPHERIZATION BUILDING, WITH CALCIUM CARBIDE ...  

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

44. NORTHEAST VIEW OF IRON DESULPHERIZATION BUILDING, WITH CALCIUM CARBIDE SILO ADJACENT TO BUILDING ON RIGHT. (Jet Lowe) - U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela River, Duquesne, Allegheny County, PA

368

20. EXTERIOR DETAIL VIEW OF EXPOSED REDWOOD PILE UNDER NORTHEAST ...  

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

20. EXTERIOR DETAIL VIEW OF EXPOSED REDWOOD PILE UNDER NORTHEAST WING ABUTMENT, LOOKING SOUTH TO NORTH - Rowdy Creek Bridge, Spanning Rowdy Creek at Fred Haight Drive, Smith River, Del Norte County, CA

369

VIEW LOOKING NORTHEAST SHOWING TIPPLE FOR LOADING COKED COAL INTO ...  

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

VIEW LOOKING NORTHEAST SHOWING TIPPLE FOR LOADING COKED COAL INTO RAILROAD CARS (FRONT), COAL STORAGE BIN AND TIPPLE FOR COAL TO BE CHARGED IN FURNACES (BACK) - Alverton Coke Works, State Route 981, Alverton, Westmoreland County, PA

370

3. OVERVIEW OF NORTH PART, SOLDIER FIELD, LOOKING NORTHEAST FROM ...  

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

3. OVERVIEW OF NORTH PART, SOLDIER FIELD, LOOKING NORTHEAST FROM THE WALL ALONG THE WEST SIDE, OPPOSITE THE CHAPEL. NOTE STONE WALL AND PILASTERS IN THE FAR CENTRAL DISTANCE. - Presidio of Monterey, Soldier Field, Monterey, Monterey County, CA

371

2. SOUTHSOUTHWEST VIEW OF NORTHEAST CORNER, NORTH AND EAST SIDES ...  

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

2. SOUTH-SOUTHWEST VIEW OF NORTHEAST CORNER, NORTH AND EAST SIDES - Juniata Mill Complex, Camp Bunk House, 22.5 miles Southwest of Hawthorne, between Aurora Crater & Aurora Peak, Hawthorne, Mineral County, NV

372

2. NORTHEAST VIEW OF SOUTHWEST CORNER, WEST AND SOUTH SIDES. ...  

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

2. NORTHEAST VIEW OF SOUTHWEST CORNER, WEST AND SOUTH SIDES. PARTIALLY SUNKEN TUB ON LEFT SIDE. - Juniata Mill Complex, Pump House, 22.5 miles Southwest of Hawthorne, between Aurora Crater & Aurora Peak, Hawthorne, Mineral County, NV

373

3. NORTHEAST VIEW OF SOUTH SIDE, WITH ADDITION ON SOUTHEAST ...  

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

3. NORTHEAST VIEW OF SOUTH SIDE, WITH ADDITION ON SOUTHEAST SIDE - Juniata Mill Complex, Mine & Camp Residence, 22.5 miles Southwest of Hawthorne, between Aurora Crater & Aurora Peak, Hawthorne, Mineral County, NV

374

1. SOUTH VIEW OF NORTHWEST SIDE, WITH NORTHEAST SIDE OF ...  

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

1. SOUTH VIEW OF NORTHWEST SIDE, WITH NORTHEAST SIDE OF MINE OFFICE ON RIGHT OF PHOTO - Juniata Mill Complex, Assay Office, 22.5 miles Southwest of Hawthorne, between Aurora Crater & Aurora Peak, Hawthorne, Mineral County, NV

375

4. VIEW SOUTHSOUTHEAST OF NORTHWEST AND NORTHEAST SIDES OF BUILDING. ...  

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

4. VIEW SOUTH-SOUTHEAST OF NORTHWEST AND NORTHEAST SIDES OF BUILDING. COLLAPSED STRUCTURE IN FOREGROUND - Juniata Mill Complex, Mine Camp Building, 22.5 miles Southwest of Hawthorne, between Aurora Crater & Aurora Peak, Hawthorne, Mineral County, NV

376

2. NORTHEAST VIEW OF SOUTH SIDE WITH ADDITION ON SOUTHWEST ...  

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

2. NORTHEAST VIEW OF SOUTH SIDE WITH ADDITION ON SOUTHWEST - Juniata Mill Complex, Mine & Camp Residence, 22.5 miles Southwest of Hawthorne, between Aurora Crater & Aurora Peak, Hawthorne, Mineral County, NV

377

1. SOUTHWEST VIEW OF NORTHEAST CORNER, NORTH AND EAST SIDES ...  

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

1. SOUTHWEST VIEW OF NORTHEAST CORNER, NORTH AND EAST SIDES - Juniata Mill Complex, Mine & Camp Residence, 22.5 miles Southwest of Hawthorne, between Aurora Crater & Aurora Peak, Hawthorne, Mineral County, NV

378

2. VIEW WESTSOUTHWEST OF NORTHEAST AND SOUTHEAST SIDES Juniata ...  

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

2. VIEW WEST-SOUTHWEST OF NORTHEAST AND SOUTHEAST SIDES - Juniata Mill Complex, Mine Camp Building, 22.5 miles Southwest of Hawthorne, between Aurora Crater & Aurora Peak, Hawthorne, Mineral County, NV

379

2. SOUTH VIEW OF NORTHWEST AND NORTHEAST SIDES (NORTH CORNER). ...  

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

2. SOUTH VIEW OF NORTHWEST AND NORTHEAST SIDES (NORTH CORNER). NORTHWEST SIDE OF ASSAY OFFICE ON LEFT - Juniata Mill Complex, Mine Office, 22.5 miles Southwest of Hawthorne, between Aurora Crater & Aurora Peak, Hawthorne, Mineral County, NV

380

2. NORTHEAST VIEW OF SOUTHWEST CORNER, WEST AND SOUTH SIDES ...  

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

2. NORTHEAST VIEW OF SOUTHWEST CORNER, WEST AND SOUTH SIDES - Juniata Mill Complex, Mine & Camp Residence, 22.5 miles Southwest of Hawthorne, between Aurora Crater & Aurora Peak, Hawthorne, Mineral County, NV

381

3. NORTHEAST VIEW OF SOUTHWEST CORNER (WEST AND SOUTH SIDES) ...  

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

3. NORTHEAST VIEW OF SOUTHWEST CORNER (WEST AND SOUTH SIDES) - Juniata Mill Complex, Camp Bunk House, 22.5 miles Southwest of Hawthorne, between Aurora Crater & Aurora Peak, Hawthorne, Mineral County, NV

382

7. CONTEXTUAL VIEW NORTHEAST TOWARDS FEATURES 6 (LEFT) AND 7 ...  

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

7. CONTEXTUAL VIEW NORTHEAST TOWARDS FEATURES 6 (LEFT) AND 7 (RIGHT) WITHIN MILL COMPLEX. - Juniata Mill Complex, 22.5 miles Southwest of Hawthorne, between Aurora Crater & Aurora Peak, Hawthorne, Mineral County, NV

383

4. DETAIL VIEW, LOOKING NORTHEAST, SHOWING BEARING BLOCK AND CONCRETE ...  

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

4. DETAIL VIEW, LOOKING NORTHEAST, SHOWING BEARING BLOCK AND CONCRETE FILLED CYLINDRICAL STEEL RING PIER, WEST TRUSS OF MAIN SPAN AT SOUTH END - Little Missouri River Bridge, Spanning Little Missouri River at CR 179, Okolona, Clark County, AR

384

Basement hall under the northeast part of the building. Live ...  

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

Basement hall under the northeast part of the building. Live animal cages and dissection rooms are to the right. Note concrete footings. - San Bernardino Valley College, Life Science Building, 701 South Mount Vernon Avenue, San Bernardino, San Bernardino County, CA

385

10. DETAIL VIEW OF SECTION OF ARCH, NORTHEAST SPANDREL AND ...  

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

10. DETAIL VIEW OF SECTION OF ARCH, NORTHEAST SPANDREL AND APPROACH WALL, AND RUBBLE/FILL EXPOSED DURING DEMOLITION, LOOKING EAST - Patch Street Bridge, Spanning Kohanza Brook on Patch Street, Danbury, Fairfield County, CT

386

Historic photograph, April, 1968. West and south elevations, looking northeast. ...  

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

Historic photograph, April, 1968. West and south elevations, looking northeast. U.S. Army Photograph; Corps of Engineers, New England Division. File number 844. - Watertown Arsenal, Building No. 313, Talcott Avenue, Watertown, Middlesex County, MA

387

View northeast of load dispatch model board; section covers substations ...  

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

View northeast of load dispatch model board; section covers substations from sunnyside yard (right) to millstone (left). - Thirtieth Street Station, Load Dispatch Center, Thirtieth & Market Streets, Railroad Station, Amtrak (formerly Pennsylvania Railroad Station), Philadelphia, Philadelphia County, PA

388

12. Emplacement no. 2, view to northeast from steps to ...  

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

12. Emplacement no. 2, view to northeast from steps to the magazine level (at lower right). At center, loading platform, teleautograph niche - Fort Wadsworth Battery Romeyn B. Ayers, South side of Ayers Road, Staten Island, Rosebank, Richmond County, NY

389

View looking northeast of console table and mirror flanked by ...  

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

View looking northeast of console table and mirror flanked by 18th century French chairs in the first floor Reception Hall - Perry Belmont House, 1618 New Hampshire Avenue, NW, Washington, District of Columbia, DC

390

FACILITY 89. FRONT OBLIQUE TAKEN FROM DRIVEWAY. VIEW FACING NORTHEAST. ...  

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

FACILITY 89. FRONT OBLIQUE TAKEN FROM DRIVEWAY. VIEW FACING NORTHEAST. - U.S. Naval Base, Pearl Harbor, Naval Housing Area Makalapa, Junior Officers' Quarters Type K, Makin Place, & Halawa, Makalapa, & Midway Drives, Pearl City, Honolulu County, HI

391

2. VIEW OF POND B, LOOKING NORTHEAST FROM THE WEST ...  

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

2. VIEW OF POND B, LOOKING NORTHEAST FROM THE WEST SIDE OF THE SOURIS RIVER VALLEY, DUE SOUTH OF THE LOOKOUT TOWER - Upper Souris National Wildlife Refuge Dams, Souris River Basin, Foxholm, Ward County, ND

392

15. Detail, northeast facade, operator's bow window and tower, showing ...  

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

15. Detail, northeast facade, operator's bow window and tower, showing knee braces carried on stone ancons used to support eaves, view to northwest, 90mm lens. - Southern Pacific Depot, 559 El Camino Real, San Carlos, San Mateo County, CA

393

12. INTERIOR VIEW LOOOKING NORTHEAST FROM WITHIN SOUTH TRANSVERSE WING ...  

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

12. INTERIOR VIEW LOOOKING NORTHEAST FROM WITHIN SOUTH TRANSVERSE WING SHOWING WINDOW ARRANGEMENT AND LOG LINTELS. - Camp Cleawox Organizational Tract, Lodge Building, Oregon Dunes National Recreation Area, Siuslaw National Forest, Florence, Lane County, OR

394

5. Photocopy of photograph, circa 1930 VIEW NORTHEAST SHOWING WEST ...  

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

5. Photocopy of photograph, circa 1930 VIEW NORTHEAST SHOWING WEST AND SOUTH ELEVATIONS - Thomas Asylum for Orphan & Destitute Indians, Dining Hall, Route 438, Cattaraugas Reservation, Irving, Chautauqua County, NY

395

7. LOOKING NORTHEAST AT THE CONNECTION DETAIL OF THE SUBSTRUCTURE ...  

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

7. LOOKING NORTHEAST AT THE CONNECTION DETAIL OF THE SUBSTRUCTURE OF THE TRUSS SPAN AND THE SHARED PIER OF THE REINFORCED CONCRETE SPAN. - "S" Bridge, U.S. Route 40 spanning Little Wheeling Creek, Elm Grove, Ohio County, WV

396

6. VIEW NORTHEAST, WEST END OF DAM DURING CONSTRUCTION OF ...  

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

6. VIEW NORTHEAST, WEST END OF DAM DURING CONSTRUCTION OF FISHWAY, DECEMBER 1995, SHOWING REMOVAL OF PLANKING - Norwich Water Power Company, Dam, West bank of Shetucket River opposite Fourteenth Street, Greenville section, Norwich, New London County, CT

397

4. Northeast side of Building 1009, (enlisted waves' barracks), looking ...  

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

4. Northeast side of Building 1009, (enlisted waves' barracks), looking southwest - Naval Air Station Chase Field, Building 1009, Essex Street, .68 mile South-southeast of intersection of Texas State Highway 202 & Independence Street, Beeville, Bee County, TX

398

3. Southwest side of quarters (executive officer's quarters), looking northeast ...  

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

3. Southwest side of quarters (executive officer's quarters), looking northeast - Naval Air Station Chase Field, Quarters S, Essex Street, .45 mile South-Southeast of intersection of Texas State Highway 202 & Independence Street, Beeville, Bee County, TX

399

1. Northeast side of Building 1042 (brig), looking southwest ...  

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

1. Northeast side of Building 1042 (brig), looking southwest - Naval Air Station Chase Field, Building 1042, Ofstie Road, .6 mile South-Southeast of intersection of Texas State Highway 202 & Independence Street, Beeville, Bee County, TX

400

8. Overview of site, looking northeast Naval Air Station ...  

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

8. Overview of site, looking northeast - Naval Air Station Chase Field, Building 1001, Independence Street, .45 mile south of intersection of Texas State Highway & Independence Street, Beeville, Bee County, TX

401

4. Northeast side of Building 1015 (land plane hangar), looking ...  

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

4. Northeast side of Building 1015 (land plane hangar), looking southwest - Naval Air Station Chase Field, Building 1015, Byrd Street, .82 mile South-southeast of intersection of Texas State Highway 202 & Independence Street, Beeville, Bee County, TX

402

8. Southwest side of Building 1040 (chapel), looking northeast ...  

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

8. Southwest side of Building 1040 (chapel), looking northeast - Naval Air Station Chase Field, Building 1040, Enterprise Street, .37 mile South-Southeast of intersection of Texas State Highway 202 & Independence Street, Beeville, Bee County, TX

403

GENERAL VIEW LOOKING SOUTHWEST, SHOWING NORTHEAST ELEVATIONS OF BUILDING A ...  

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

GENERAL VIEW LOOKING SOUTHWEST, SHOWING NORTHEAST ELEVATIONS OF BUILDING A (FACTORY) TO LEFT AND BUILDING B (STORAGE AND SHIPPING) TO RIGHT - Pearce Manufacturing Company, Harrison Avenue West, Latrobe, Westmoreland County, PA

404

22. LOOKING NORTHEAST FROM RECEIVING PLATFORM AT THE REAR (EAST ...  

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

22. LOOKING NORTHEAST FROM RECEIVING PLATFORM AT THE REAR (EAST SIDE) OF BUILDING, SHOWING SOUTH SIDE OF NORTH WING AND SOUTH SIDE OF FOOD PRESERVATION AND SANITATION LABORATORY (Harms) - Dairy Industry Building, Iowa State University campus, Ames, Story County, IA

405

7. VIEW OF APPROACH TO BRIDGE #2, LOOKING NORTHEAST, WITH ...  

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

7. VIEW OF APPROACH TO BRIDGE #2, LOOKING NORTHEAST, WITH WEST END OF BRIDGE #3 IN BACKGROUND. ROCK OVERHANG IS VISIBLE - Goat Trail Mining Road, Highway 20, 1.5 miles North of Newhalem, Newhalem, Whatcom County, WA

406

8. Keeper's house, view west, southeast and northeast sides ...  

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

8. Keeper's house, view west, southeast and northeast sides - Goat Island Light Station, Goat Island, next to entrance to Cape Porpoise Harbor, just south of Trott Island, Cape Porpoise, York County, ME

407

Battery Berry Observation Station, general view to northeast Fort ...  

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

Battery Berry Observation Station, general view to northeast - Fort McKinley, Battery Berry Observation Station, North side of Wood Side Drive approximately 80 feet east of Spring Cove Lane, Great Diamond Island, Portland, Cumberland County, ME

408

Battery Honeycutt Observation Station, general view to northeast Fort ...  

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

Battery Honeycutt Observation Station, general view to northeast - Fort McKinley, Battery Honeycutt Observation Station, East side of East Side Drive, approximately 225 feet south of Cove Side Drive, Great Diamond Island, Portland, Cumberland County, ME

409

8. Missile Alert Facility, northeast corner. Lyon Whiteman Air ...  

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

8. Missile Alert Facility, northeast corner. Lyon - Whiteman Air Force Base, Oscar O-1 Minuteman Missile Alert Facility, Southeast corner of Twelfth & Vendenberg Avenues, Knob Noster, Johnson County, MO

410

1. BUILDING 411A. VIEW TO NORTHEAST. Rocky Mountain Arsenal, ...  

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

1. BUILDING 411A. VIEW TO NORTHEAST. - Rocky Mountain Arsenal, Sulfur Monochloride & Dichloride Manufacturing, 1003 feet South of December Seventh Avenue; 412 feet East of D Street, Commerce City, Adams County, CO

411

71. INTERIOR, BUILDING 272 (PLUTONIUM STORAGE BUILDING) LOOKING NORTHEAST INTO ...  

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

71. INTERIOR, BUILDING 272 (PLUTONIUM STORAGE BUILDING) LOOKING NORTHEAST INTO PLUTONIUM STORAGE ROOM SHOWING CUBICLES FOR STORAGE. - Loring Air Force Base, Weapons Storage Area, Northeastern corner of base at northern end of Maine Road, Limestone, Aroostook County, ME

412

17. MIDBASEMENT, LOOKING NORTHEAST AT WEST END OF THE CONDENSATE ...  

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

17. MID-BASEMENT, LOOKING NORTHEAST AT WEST END OF THE CONDENSATE UNIT FOR TURBINE #4 - Portland General Electric Company, Turbine Building, 1841 Southeast Water Street, Portland, Multnomah County, OR

413

2. GENERAL VIEW LOOKING NORTHEAST, SHOWING COKE MACHINE (CENTER), INTERMEDIATE ...  

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

2. GENERAL VIEW LOOKING NORTHEAST, SHOWING COKE MACHINE (CENTER), INTERMEDIATE TIPPLE (RIGHT), AND OVENS - Shoaf Mine & Coke Works, East side of Shoaf, off Township Route 472, Shoaf, Fayette County, PA

414

View of Face B Array, looking northeast Beale Air ...  

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

View of Face B Array, looking northeast - Beale Air Force Base, Perimeter Acquisition Vehicle Entry Phased-Array Warning System, Techinical Equipment Building, End of Spencer Paul Road, north of Warren Shingle Road (14th Street), Marysville, Yuba County, CA

415

11. View toward southwest, northeast oblique of perimeter acquisition radar ...  

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

11. View toward southwest, northeast oblique of perimeter acquisition radar building showing - Stanley R. Mickelsen Safeguard Complex, Perimeter Acquisition Radar Building, Limited Access Area, between Limited Access Patrol Road & Service Road A, Nekoma, Cavalier County, ND

416

113. COOLING WATER PIPING INTO COMPRESSORS, NORTHEAST CORNER OF MECHANICAL ...  

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

113. COOLING WATER PIPING INTO COMPRESSORS, NORTHEAST CORNER OF MECHANICAL EQUIPMENT ROOM (201), LSB (BLDG. 751) - Vandenberg Air Force Base, Space Launch Complex 3, Launch Pad 3 East, Napa & Alden Roads, Lompoc, Santa Barbara County, CA

417

1. CHICKEN HOUSE. SOUTH AND WEST FACADES. VIEW TO NORTHEAST. ...  

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

1. CHICKEN HOUSE. SOUTH AND WEST FACADES. VIEW TO NORTHEAST. - Thompson Falls Hydroelectric Project, Chicken House, On island between Forebay Channel & ClarkFord River, Thompson Falls, Sanders County, MT

418

3. Credit BG. Interior view looks northeast (46°) at fire ...  

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

3. Credit BG. Interior view looks northeast (46°) at fire pumps, valves, and emergency generator (powered by an internal combustion engine). - Edwards Air Force Base, North Base, Deluge Water Pumping Station, Near Second & D Streets, Boron, Kern County, CA

419

32. INTERIOR VIEW, MUSIC ROOM LOCATED AT THE NORTHEAST CORNER ...  

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

32. INTERIOR VIEW, MUSIC ROOM LOCATED AT THE NORTHEAST CORNER OF THE HOUSE ON THE FIRST FLOOR, LOOKING TO THE FIREPLACE IN THE EAST WALL - Arlington Place, 331 Cotton Avenue, Southwest, Birmingham, Jefferson County, AL

420

11. GENERAL VIEW FROM WEST BANK LOOKING NORTHEAST (negative reversed) ...  

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

11. GENERAL VIEW FROM WEST BANK LOOKING NORTHEAST (negative reversed) - American Falls Water, Power & Light Company, Island Power Plant, Snake River, below American Falls Dam, American Falls, Power County, ID

421

17. Photocopy of a photograph1921 EASTSIDE PLANT LOOKING NORTHEAST ...  

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

17. Photocopy of a photograph--1921 EASTSIDE PLANT LOOKING NORTHEAST - American Falls Water, Power & Light Company, Island Power Plant, Snake River, below American Falls Dam, American Falls, Power County, ID

422

View from northeast to southwest of PAR site sentry station; ...  

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

View from northeast to southwest of PAR site sentry station; formerly the bachelor's enlisted men's quarter (BEQ) - Stanley R. Mickelsen Safeguard Complex, Sentry Station, North of Second Avenue & West of Electrical Switch Station No. 2, Nekoma, Cavalier County, ND

423

6. VIEW SHOWING NORTHEAST END OF WHARF REAR FROM LANDSLIDE ...  

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

6. VIEW SHOWING NORTHEAST END OF WHARF REAR FROM LANDSLIDE - U.S. Naval Base, Pearl Harbor, Berthing Wharf S378, Beckoning Point, Southeast of Cowpens Street, Ford Island, Pearl City, Honolulu County, HI

424

OBLIQUE VIEW OF NORTHEAST AND NORTHWEST SIDE OF UPPER GATE ...  

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

OBLIQUE VIEW OF NORTHEAST AND NORTHWEST SIDE OF UPPER GATE MACHINERY HOUSES, VIEW TOWARDS SOUTH - St. Lucie Canal, Lock No. 1, Machinery Houses, St. Lucie, Cross State Canal, Okeechobee Intracoastal Waterway, Stuart, Martin County, FL

425

10. June 25, 1963 SEED BUILDING UNDER CONSTRUCTION Looking northeast ...  

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

10. June 25, 1963 SEED BUILDING UNDER CONSTRUCTION Looking northeast showing west wall of Machinery Shed - Tucson Plant Material Center, Machinery Shed, 3241 North Romero Road, Tucson, Pima County, AZ

426

17. VIEW OF THE DIAMOND MINEYARD LOOKING NORTHEAST. THE DRIES ...  

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

17. VIEW OF THE DIAMOND MINEYARD LOOKING NORTHEAST. THE DRIES ARE ON THE LEFT, WITH THE TAR HOUSE, TOILET, AND ROPE CLAMP CLEANING BUILDING TO THE RIGHT - Butte Mineyards, Diamond Mine, Butte, Silver Bow County, MT

427

4. View of bridge deck from northeast approach (bridge deck ...  

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

4. View of bridge deck from northeast approach (bridge deck from southwest approach is virtually identical - Big Cottonwood River Bridge No. 246, Spanning Big Cottonwood River at Cottonwood Street (City Road No. 165), New Ulm, Brown County, MN

428

10. Detail, dedication plaque on the bridge's northeast end (plaque ...  

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

10. Detail, dedication plaque on the bridge's northeast end (plaque on southwest end of bridge is identical - Big Cottonwood River Bridge No. 246, Spanning Big Cottonwood River at Cottonwood Street (City Road No. 165), New Ulm, Brown County, MN

429

Looking Northeast at Southwest End of Maintenance Shop with Milling ...  

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

Looking Northeast at Southwest End of Maintenance Shop with Milling Machines, Hoist, Electrical Boxes in Recycle Recovery Building - Hematite Fuel Fabrication Facility, Recycle Recovery Building, 3300 State Road P, Festus, Jefferson County, MO

430

5. VIEW OF SOUTHEAST AND NORTHEAST ELEVATIONS, SHOWING BRIDGE TO ...  

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

5. VIEW OF SOUTHEAST AND NORTHEAST ELEVATIONS, SHOWING BRIDGE TO NAPPING BUILDING AT LEFT AND STEEL I-BEAM HOIST ON ROOF WITH PARAPET, LOOKING WEST - Massachusetts Mills, Cloth Room-Section 15, 95 Bridge Street, Lowell, Middlesex County, MA

431

PAINT SHOP, FIRST FLOOR, NORTHEAST CORNER OFFICE INTERIOR, LOOKING WEST. ...  

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

PAINT SHOP, FIRST FLOOR, NORTHEAST CORNER OFFICE INTERIOR, LOOKING WEST. PROJECTING WALLS WITH INFILLED ARCHES WERE PART OF ONE PAINTING BOOTH IN ORIGINAL STRUCTURE. - Southern Pacific, Sacramento Shops, Paint Shop, 111 I Street, Sacramento, Sacramento County, CA

432

Credit BG. View looks northeast (48°) over concrete foundation for ...  

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

Credit BG. View looks northeast (48°) over concrete foundation for Utility and Paint Shop (Building 4315). Four North Base hangars appear in background - Edwards Air Force Base, North Base, Utility & Paint Shop, Second & E Streets, Boron, Kern County, CA

433

Weather conditions affecting VTOL airbus operations in the Northeast Corridor  

E-print Network

A detailed study of hourly weather observations in the Northeast Corridor during the periods 0600-2400 for a ten year period 1944-1958 was made to study the implications of weather affecting the operations of a VSTOL Airbus ...

Simpson, R. W.

1966-01-01

434

Perspective view of east facade from northeast National Home ...  

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

Perspective view of east facade from northeast - National Home for Disabled Volunteer Soldiers, Pacific Branch, Main Mental Health Building, 11301 Wilshire Boulevard, West Los Angeles, Los Angeles County, CA

435

View northeast toward west side of building 68. View partially ...  

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

View northeast toward west side of building 68. View partially obscured by automobiles and storage structures. - Naval Air Station North Island, Seaplane Hangars, Roe Street, North Island, San Diego, San Diego County, CA

436

Detail of back of lion showing need for restoration, northeast ...  

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

Detail of back of lion showing need for restoration, northeast corner of bridge. - Connecticut Avenue Bridge, Spans Rock Creek & Potomac Parkway at Connecticut Avenue, Washington, District of Columbia, DC

437

1. FAN HOUSE FROM NORTHEAST Sublet Mine No. 6, ...  

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

1. FAN HOUSE FROM NORTHEAST - Sublet Mine No. 6, Fan House, North structure, west side of Willow Creek Valley, east of County Road No. 306, 3 miles north of U.S. Highway 189, Kemmerer, Lincoln County, WY

438

Interior, looking northeast Beale Air Force Base, Perimeter Acquisition ...  

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

Interior, looking northeast - Beale Air Force Base, Perimeter Acquisition Vehicle Entry Phased-Array Warning System, Clean Lubrication Oil Storage Tank & Enclosure, End of Spencer Paul Road, north of Warren Shingle Road (14th Street), Marysville, Yuba County, CA

439

2. PERSPECTIVE VIEW OF OVENS ALONG CATS RUN LOOKING NORTHEAST, ...  

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

2. PERSPECTIVE VIEW OF OVENS ALONG CATS RUN LOOKING NORTHEAST, SHOWING OVEN NOS. 159 (RIGHT) THROUGH 163 (LEFT) - Griffin No. 1 Coke Works, Along Cats Run, Southeast of Masontown Bourough (Nicholson Township), Masontown, Fayette County, PA

440

TENANT HOUSE INTERIOR, KITCHEN, NORTH AND EAST WALLS, LOOKING NORTHEAST ...  

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

TENANT HOUSE INTERIOR, KITCHEN, NORTH AND EAST WALLS, LOOKING NORTHEAST FROM CENTER OF ROOM - Irvine Ranch Agricultural Headquarters, Carillo Tenant House, Southwest of Intersection of San Diego & Santa Ana Freeways, Irvine, Orange County, CA

441

7. Northeast view interior, air traffic control and landing system ...  

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

7. Northeast view interior, air traffic control and landing system room 25 - Selfridge Field, Building No. 1050, Northwest corner of Doolittle Avenue & D Street; Harrison Township, Mount Clemens, Macomb County, MI

442

3. VIEW, LOOKING SOUTHWEST, SHOWING NORTHEAST PORTION OF WASTE WEIR ...  

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

3. VIEW, LOOKING SOUTHWEST, SHOWING NORTHEAST PORTION OF WASTE WEIR #3 ON THE SPILLWAY SIDE - Erie Canal (Enlarged), Oothout Culvert & Waste Weir, Lock No. 4 vicinity, near Maplewood village, Colonie, Albany County, NY

443

1. VIEW, LOOKING NORTHEAST, SHOWING SOUTHWEST PORTION AND WING WALL ...  

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

1. VIEW, LOOKING NORTHEAST, SHOWING SOUTHWEST PORTION AND WING WALL OF WASTE WEIR #3 ON THE CANAL SIDE - Erie Canal (Enlarged), Oothout Culvert & Waste Weir, Lock No. 4 vicinity, near Maplewood village, Colonie, Albany County, NY

444

View of camera station located northeast of Building 70022, facing ...  

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

View of camera station located northeast of Building 70022, facing northwest - Naval Ordnance Test Station Inyokern, Randsburg Wash Facility Target Test Towers, Tower Road, China Lake, Kern County, CA

445

DETAIL TOP VIEW OF AERIAL TRAMWAY DRIVE MECHANISM, LOOKING NORTHEAST. ...  

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

DETAIL TOP VIEW OF AERIAL TRAMWAY DRIVE MECHANISM, LOOKING NORTHEAST. THE FRICTION BRAKING SYSTEM CAN BE SEEN IN SHADOW ABOVE THE LARGE CABLE WHEEL BELOW. - Keane Wonder Mine, Park Route 4 (Daylight Pass Cutoff), Death Valley Junction, Inyo County, CA

446

Ages and petrogenetic significance of igneous mangerite-charnockite suites associated with massif anorthosites, Grenville Province  

Microsoft Academic Search

U-Pb ages of zircon fractions of major anorthosite-mangerite-charnockite-granite (AMCG) igneous suites imply that this magmatism inaugurated what is widely regarded as the Grenvillian event between about 1.16 and 1.12 Ga ago over about two-thirds of the Grenville Province east, northeast, and southeast of the Central Metasedimentary Belt. Pre-Grenvillian AMCG suites about 1.36 and 1.64 Ga old have much more restricted

Ronald F. Emslie; Patricia A. Hunt

1990-01-01

447

8. GENERAL VIEW LOOKING NORTHEAST AT LANDSCAPING; THE AUDITORIUM IS ...  

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

8. GENERAL VIEW LOOKING NORTHEAST AT LANDSCAPING; THE AUDITORIUM IS BEHIND THE TREE ON FAR LEFT; POWERHOUSE #1 IS OUT OF VIEW IN THE RIGHT BACKGROUND. Photograph Nos. OR-11-9 through OR-11-37 are photocopies of photographs. Original aerial and historic photographs are located at the Bonneville Powerhouse, Bonneville, Oregon. - Bonneville Project, Columbia River, 1 mile Northeast of Exit 40, off Interstate 84, Bonneville, Multnomah County, OR

448

2. Credit BG. View down dust ditch at northeast side ...  

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

2. Credit BG. View down dust ditch at northeast side of A Street, looking north northwest in "the loop". Note culverts used to give vehicular and pedestrian access to buildings northeast of A Street, some foundations of which may be seen at right of view. Structures in background belong to Jet Propulsion Laboratory Edwards Facility. - Edwards Air Force Base, North Base, Dust Ditch System, Traversing North Base, Boron, Kern County, CA

449

Brazil to help develop oil, gas in Argentina's Northeast basin  

SciTech Connect

This paper reports that Brazil and Argentina have agreed to joint exploration and development of oil and gas in Argentina's Northeast basin. Although not covered by the accord, the venture could lead to a 2,400 km, $2.5 billion gas pipeline system form the Argentine basin to southern Brazil, beyond almost $2 billion in exploration and development costs. The Northeast basin has proved reserves of 95 million bbl of crude oil and 2.1 tcf of gas.

Not Available

1992-09-28

450

2. Environmental view looking northeast from an elevation. East forebay ...  

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

2. Environmental view looking northeast from an elevation. East forebay of lock is visible in left mid-ground. Residence can be seen across U.S. 24. View shows profile of Wabash and Erie canal prism (between U.S. 24 and line of electrical poles) as it continues in a northeasterly direction. - Wabash & Erie Canal, Lock No. 2, 8 miles east of Fort Wayne, adjacent to U.S. Route 24, New Haven, Allen County, IN

451

14. VIEW LOOKING SOUTHWEST AT THE NORTHEAST CORNER OF THE ...  

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

14. VIEW LOOKING SOUTHWEST AT THE NORTHEAST CORNER OF THE MILL. THE INCLINED TRESTLE WHICH IS CONSIDERABLE DECAYED IN THIS PHOTOGRAPH, WAS PART OF A TRAMWAY THAT LEAD FROM A MINE ADIT LOCATED NEAR WHERE THE CYANIDE PLANT WAS LOCATED , UP INTO THE DELIVERY LEVEL OF THE MILL ORE WAS CONVEYED ALONG THIS TRAM IN 125 TON ORE CARS. - Standard Gold Mill, East of Bodie Creek, Northeast of Bodie, Bodie, Mono County, CA

452

Northeast Wetland Flora: Field Office Guide to Plant Species  

NSDL National Science Digital Library

The USDA Natural Resource Conservation Service's Northeast National Technical Center in Chester, Pennsylvania produced Northeast Wetland Flora: Field Office Guide to Plant Species. The guide contains black and white illustrations, full species descriptions (with color photographs, illustrations, and small distribution maps), illustrated glossaries, an alphabetical species list (provides common and scientific names for 300 species of vascular plants), and a key to generalized plant groups. The guide may be browsed online or downloaded in .zip format.

453

57. INTERIOR VIEW LOOKING NORTHEAST IN THE BOILER ROOM. NOTE ...  

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

57. INTERIOR VIEW LOOKING NORTHEAST IN THE BOILER ROOM. NOTE THE FLY WHEEL FROM THE ORIGINAL STEAM ENGINE AND A STAIRWAY LEADING ONTO THE STAMP BATTERY FLOOR. MAKERS LATE AT BASE OF STACK SAYS; PRESCOTT SCOTT AND CO. BUILDERS 1879. CAST INTO BOILER FRONT AT LOWER PLANT CORNER IT SAYS: H.J. BOOTH AND CO. BUILDERS, SF. 1874. - Standard Gold Mill, East of Bodie Creek, Northeast of Bodie, Bodie, Mono County, CA

454

Credit BG. View looking north northeast at Guard House and ...  

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

Credit BG. View looking north northeast at Guard House and entrance to Building 4505 complex. This Guard House was built in 1993 as a portable unit; it replaced an older structure. The Building 4505 complex is surrounded by a security fence. Building 4496 appears to immediate right of view - Edwards Air Force Base, North Base, Guard House, Northeast of A Street, Boron, Kern County, CA

455

24. View toward the northeast of the interior of the ...  

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

24. View toward the northeast of the interior of the blacksmith shop. Note the wall-hung crane on the east wall at the right. The olden door at the left led to the material track; the ramp and door in the northeast corner (center of photograph) gave access to the material platform. - Central Railroad of New Jersey, Engine Terminal, Jersey City, Hudson County, NJ

456

Metallogenesis and Tectonics of Northeast Asia  

USGS Publications Warehouse

The major purposes of this chapter are to provide (1) an overview of the regional geology, tectonics, and metallogenesis of Northeast Asia for readers who are unfamiliar with the region, (2) a general scientific introduction to the succeeding chapters of this volume, and (3) an overview of the methodology of metallogenic and tectonic analysis used in this study. We also describe how a high-quality metallogenic and tectonic analysis, including construction of an associated metallogenic-tectonic model will greatly benefit other mineral resource studies, including synthesis of mineral-deposit models; improve prediction of undiscovered mineral deposit as part of a quantitative mineral-resource-assessment studies; assist land-use and mineral-exploration planning; improve interpretations of the origins of host rocks, mineral deposits, and metallogenic belts, and suggest new research. Research on the metallogenesis and tectonics of such major regions as Northeast Asia (eastern Russia, Mongolia, northern China, South Korea, and Japan) and the Circum-North Pacific (the Russian Far East, Alaska, and the Canadian Cordillera) requires a complex methodology including (1) definitions of key terms, (2) compilation of a regional geologic base map that can be interpreted according to modern tectonic concepts and definitions, (3) compilation of a mineral-deposit database that enables a determination of mineral-deposit models and clarification of the relations of deposits to host rocks and tectonic origins, (4) synthesis of a series of mineral-deposit models that characterize the known mineral deposits and inferred undiscovered deposits in the region, (5) compilation of a series of metallogenic-belt belts constructed on the regional geologic base map, and (6) construction of a unified metallogenic and tectonic model. The summary of regional geology and metallogenesis presented here is based on publications of the major international collaborative studies of the metallogenesis and tectonics of Northeast Asia that have been led by the U.S. Geological Survey (USGS). These studies have produced two broad types of publications (1) a series of regional geologic, mineral-deposit, and metallogenic-belt maps, with companion descriptions of the region, and (2) a suite of metallogenic and tectonic analyses of the same region. The study area consists of eastern Russia (most of eastern Siberia and the Russian Far East), Mongolia, northern China, South Korea, Japan, and adjacent offshore areas. The major cooperative agencies are the Russian Academy of Sciences; the Academy of Sciences of the Sakha Republic (Yakutia); VNIIOkeangeologia and Ministry of Natural Resources of the Russian Federation; the Mongolian Academy of Sciences; the Mongolian University of Science and Technology; the Mongolian National University; Jilin University, Changchun, People's Republic of China, the China Geological Survey; the Korea Institute of Geosciences and Mineral Resources; the Geological Survey of Japan/AIST; the University of Texas, Arlington, and the U.S. Geological Survey (USGS). This study builds on and extends the data and interpretations from a previous project on the Major Mineral Deposits, Metallogenesis, and Tectonics of the Russian Far East, Alaska, and the Canadian Cordillera conducted by the USGS, the Russian Academy of Sciences, the Alaska Division of Geological and Geophysical Surveys, and the Geological Survey of Canada. The major products of this project were summarized by Naumova and others (2006) and are described in appendix A.

2010-01-01

457

Foraminiferal and radiolarian biostratigraphy of the youngest (Late Albian through Late Cenomanian) sediments of the Tatra massif, Central Western Carpathians  

NASA Astrophysics Data System (ADS)

B?k, K. and B?k M. 2013. Foraminiferal and radiolarian biostratigraphy of the youngest (Late Albian through Late Cenomanian) sediments of the Tatra massif, Central Western Carpathians. Acta Geologica Polonica, 63 (2), 223-237. Warszawa. The foraminiferal and radiolarian biostratigraphy of selected sections of the Zabijak Formation, the youngest sediments of the Tatra massif (Central Western Carpathians), have been studied. Benthic foraminifers, mainly agglutinated species, occur abundantly and continuously throughout the studied succession, while planktic foraminifers are generally sparse. Five planktic and two benthic foraminiferal zones have been recognized. The marly part of the Zabijak Formation comprises the Pseudothalmanninella ticinensis (Upper Albian) through the Rotalipora cushmani (Upper Cenomanian) planktic foraminiferal zones, and the Haplophragmoides nonioninoides and Bulbobaculites problematicus benthic foraminiferal zones. The radiolarians were recognized exclusively in the Lower Cenomanian part of the formation.

B?k, Krzysztof; B?k, Marta

2013-06-01

458

Isotope-geochemical Sm-Nd, ENd and TDM data of the layered paleoproterozoic PGE massif Monchetundra (Kola peninsula)  

NASA Astrophysics Data System (ADS)

Monchetundra massif is located in the central part of the Kola Peninsula and it is the south-eastern part of the Main Ridge Intrusion. The massif is subdivided into two up to five syngenetic zones by different researchers (Nazimova, Rayan, 2008, Nerovich et. al. 2009, Layered intrusions…p.1, 2004). According the isotope-geochronological and isotope-geochemical data it can identify at least four groups of rocks distinguishing by ages. The aim of this study is to identify the isotope-geochemical Sm-Nd (ENd and TDM) data of the mafic rocks of the massif Monchetundra. For the interpretation of these data it was selected 40 analyzes of rocks sampled during field works within Monchetundra massif in 2011-2012 and from the published data (Nerovich et. al., 2009, Bayanova et. al., 2010, Layered intrusions…p.2, 2004). The earliest group of rocks is dated by U-Pb zircon in 2521 ± 8 Ma (Bayanova et. al., 2010). It consist of metagabbroids of wide composition range from anorthosite up to gabbro, which also called «amphibole-plagioclase rocks» (Nerovich et. al., 2009) due to their strong metamorphic changes. These rocks are characterized by ENd values from -0.02 up to -2.23 (at the time of rocks formation) as well as mesoarchean and paleoarchean values of model ages. The second group of rocks is composed of medium- grained and coarse-grained mesocratic gabbronorites of trachytoid texture and their amphibolized varieties. The rocks of this group were dated in 2505 ± 6 Ma and 2501 ± 8 Ma (Layered intrusions…p.1., 2004). Values of ENd for these rocks vary from -1.70 up to +1.42, model ages correspond to the range from 2.7 up to 3.5 Ga. Leucocratic gabbronorites, gabbronorite-anorthosites of massive texture and their metamorphosed varieties with garnet and amphibole constitute the third group of Monchetundra massife rocks. The formation age of these rocks has been determined on zircon and baddeleyite by U-Pb method and it is 2471 ± 9 Ma, 2476 ± 17 Ma, 2456 ± 5 Ma and 2453 ± 4 Ma (Bayanova et. al., 2010, Mitrofanov et. al., 1993). Value of ENd for this group rocks vary from -3.38 to +2.08, and the values of the model ages range between 2.7 and 3.4 Ga. Dyke-shaped bodies of melanocratic troctolites are found within the southeastern slope of Monchetundra massif. These rocks are characterized by positive values of ENd varying from +2.01 to +3.28, and the values of model ages are close to 2.7 Ga. Gabbro-pegmatites occur at the upper part of the Monchtundra massif and are characterized by negative ENd values from -1.26 up to -0.63, and model ages of protolith range from 3.0 to 3.2 Ga. Isotope-geochemical Sm-Nd (ENd and TDM) data indicate the origining of gabbro massif from EM-1 mantle plume reservoir and this fact is confirmed by the ENd-ISr diagrams in accordance with published data (Bayanova et. al., 2009). The research is conducted with the financial support of RFBR 13-05-00493, OFI-M 13-05-12055, 14-05-93965 and 14-05-00484.

Kunakkuzin, Evgeniy; Borisenko, Elena; Serov, Pavel

2014-05-01

459

Zircon UPb age of the Paramo Rico tonalite-granodiorite, Santander Massif (Cordillera Oriental, Colombia) and its geotectonic significance  

Microsoft Academic Search

We present the first U-Pb data, which document the existence of early Mesozoic magmatism in the Santander Massif, within the Cordillera Oriental of Colombia. Zircon fractions separated from a tonalite and a granodiorite of the Paramo Rico intrusion yield crystallization ages of 205–210 Ma. Biotite K-Ar ages of other intrusions in this region range from 177 to 210 Ma, overlapping

W. Dorr; J. R Grösser; G. I Rodriguez; U Kramm

1995-01-01

460

Paleomagnetism of Ordovician carbonate rocks from Malopolska Massif, Holy Cross Mountains, SE Poland — Magnetostratigraphic and geotectonic implications  

Microsoft Academic Search

The structural and geodynamic history of the Malopolska Massif (Holy Cross Mountains — Poland), situated within the Trans-European Suture Zone (TESZ) is still a matter of debate. Recent provenance studies and biogeographical data indicate that the Malopolska is a Gondwana-derived terrane accreted to Baltica between late Mid-Cambrian and Tremadocian times. Existing paleomagnetic data, however, are equivocal. They indicate either close

M. Schätz; A. Zwing; J. Tait; Z. Belka; H. C. Soffel; V. Bachtadse

2006-01-01

461

The Early-Cambrian Boho volcano of the El Graara massif, Morocco: Petrology, geodynamic setting and coeval sedimentation  

Microsoft Academic Search

A major volcanic episode is recorded across the Neoproterozoic-Cambrian transition in the Moroccan Anti-Atlas. Several volcanic cones are still preserved in the El Graara massif, laterally correlatable with volcanic flows dated as Early Cambrian (U\\/Pb date of 534±10Ma). Volcanic ashes and flows are interbedded with the uppermost part of the Adoudou dolostones, whereas the best-preserved volcano (the Boho Jbel) is

J. J. Álvaro; H. Ezzouhairi; E. Vennin; M. L. Ribeiro; S. Clausen; A. Charif; N. Ait Ayad; M. E. Moreira

2006-01-01

462

Phanerozoic polyorogenic deformation in southern Jiuling Massif, northern South China block: Constraints from structural analysis and geochronology  

NASA Astrophysics Data System (ADS)

The structure of the Jiuling Massif has been investigated in order to delineate the polyorogenic deformation and discuss its geodynamic evolution and orogenic mechanisms. Detailed structural analysis indicates that the D1 event is characterized by top-to-the NNW ductile shearing with pervasive foliation, and mineral and stretching lineation developed in the entire region. Compared with the D1 deformation, D2 structures are localized in ductile shear zones with subvertical foliation and subhorizontal E-W trending lineation, indicating a dextral ductile shearing. The D3 event, marked by folds and thrusts mainly in a brittle domain, modified the D1 structures by asymmetrical folds. The dominant D4 structures are gravitational folds and normal faults, corresponding to a later extension. Our new geochronological data suggest that the D1 event occurred between 465 and 380 Ma with D2 dextral shearing at the end of this Early Paleozoic orogen, and the D3 event has been constrained at 245-215 Ma. The final uplift of the Jiuling Massif by the D4 event can be correlated with the Late Mesozoic extension across the eastern South China block. Along with previous studies in the South China block, the structural pattern of the Jiuling Massif elucidates the influence of the Early Paleozoic and Early Mesozoic intracontinental belts triggered by repeated reactivation of the Jiangshan-Shaoxing Fault. Combined with deformation to the south, the Early Paleozoic belt shows a positive flower pattern, with opposing kinematics, rooted in the Jiangshan-Shaoxing Fault. During the Early Mesozoic, a general intracontinental belt was developed with uniform kinematics in both the Jiuling Massif and the Xuefengshan Belt, possibly resulted from the far-field effect of the Triassic NW-directed Paleo-Pacific subduction.

Chu, Yang; Lin, Wei

2014-06-01

463

35 Ma old ultrahigh-pressure metamorphism and evidence for very rapid exhumation in the Dora Maira Massif, Western Alps  

Microsoft Academic Search

Ion microprobe (SHRIMP) data on zircons from various rock types of an ultrahigh-pressure (UHP) metamorphic whiteschist-type pyrope quartzite lens of the Dora Maira Massif (DMM) consistently show domains giving a Late Eocene age of 35.4 ± 1.0 Ma which is taken as the age of UHP metamorphism. These domains partially replace the older oscillatory zoning pattern of the zircons formed

D. Gebauer; H.-P. Schertl; M. Brix; W. Schreyer

1997-01-01

464

Massification, bureaucratization and questing for “world-class” status : Higher education in China since the mid-1990s  

Microsoft Academic Search

Purpose – This article aims to review the latest developments of the higher education sector in China since the mid-1990s by focusing on the expansion of university education. Design\\/methodology\\/approach – It is argued that while massification of higher education is an important indication of the progress in China's higher education system, the quest for world-class universities indicates China's ambition to

Kinglun Ngok

2008-01-01

465

Structure and stratigraphy of the Teplá–Barrandian Neoproterozoic, Bohemian Massif: A new plate-tectonic reinterpretation  

Microsoft Academic Search

The Teplá–Barrandian unit (TBU) of the Bohemian Massif exposes a section across the once extensive Avalonian–Cadomian belt, which bordered the northern active margin of Gondwana during late Neoproterozoic. This paper synthesizes the state-of-the-art knowledge on the Cadomian basement of the TBU to redefine its principal component units, to revise an outdated stratigraphic scheme, and to interpret this scheme in terms

Jaroslava Hajná; Ji?í Žák; Václav Kachlík

2011-01-01

466

A Paleomagnetic study on the tectonic evolution of the Nigde-Kirsehir massif and the Taurides since the Mesozoic-Cenozoic  

NASA Astrophysics Data System (ADS)

The main tectonic domains of Turkey consist of several different assemblages of microcontinents represented by the Istranca massif, Istanbul Zone, Sakarya Zone, Nigde-Kirsehir Massif, Anatolide-Tauride block, and the Arabian platform. It is widely reported that the borders between these fragments are represented by suture zones, which resulted from the closure of different branches of the Neotethian Ocean. The northern suture zone, the Izmir-Ankara-Erzincan suture zone, is well known, whereas the suture zone between the Nigde-Kirsehir massif and the Taurides has been a subject of debate. It has been proposed that the Nigde-Kirsehir massif rifted from the Taurides-Anatolides in the Mesozoic and that the Intra-Tauride Ocean lay between these blocks. Other researchers have alternatively proposed that the Intra-Tauride Ocean between the Taurides-Anatolides and the Nigde-Kirsehir massif never existed, and assume that the it is a promontory of the Taurides. Paleomagnetic rotations obtained from a previous study indicate oroclinal bending in the Late Cretaceous in the northern part of the Nigde-Kirsehir massif due to its northwards indentation onto the Sakarya zone. However the southern deformation history of the Nigde-Kirsehir massif during Mesozoic has not been investigated. We have carried out a paleomagnetic study on the southern part of the massif, using a total of 120 sites that are of Late Jurassic to Miocene in age, to constrain the paleotectonic evolution of the Nigde-Kirsehir massif and its surrounding area. A paleolatitude of 17°N is obtained for the Late Jurassic-Lower Cretaceous Tauride carbonate platform, whereas Late Cretaceous arc volcanics from the suture zone around the Nigde-Kirsehir massif (Mersin ophiolite, Pozanti ophiolite) indicate a ~20°N paleolatitude. Both the Late Jurassic to Middle Eocene paleomagnetic declinations from the southeastern part of the investigation area indicates counterclockwise rotation, whereas Late Cretaceous declinations from the southwestern part, show rotations that are consistent with the curvature of the Neotethian suture zones.

Cengiz Cinku, M.; Mumtaz Hisarli, Z.; Hirt, A. M.; Ulker, B.; Oksum, E.; Kaya, N.; Setzer, F.; Yilmaz, Y.-; Orbay, N.

2013-12-01

467

Lower Pliensbachian caldera volcanism in high-obliquity rift systems in the western North Patagonian Massif, Argentina  

NASA Astrophysics Data System (ADS)

In the Cerro Carro Quebrado and Cerro Catri Cura area, located at the border between the Neuquén Basin and the North Patagonian Massif, the Garamilla Formation is composed of four volcanic stages: 1) andesitic lava-flows related to the beginning of the volcanic system; 2) basal massive lithic breccias that represent the caldera collapse; 3) voluminous, coarse-crystal rich massive lava-like ignimbrites related to multiple, steady eruptions that represent the principal infill of the system; and, finally 4) domes, dykes, lava flows, and lava domes of rhyolitic composition indicative of a post-collapse stage. The analysis of the regional and local structures, as well as, the architectures of the volcanic facies, indicates the existence of a highly oblique rift, with its principal extensional strain in an NNE-SSW direction (?N10°). The analyzed rocks are mainly high-potassium dacites and rhyolites with trace and RE elements contents of an intraplate signature. The age of these rocks (189 ± 0.76 Ma) agree well with other volcanic sequences of the western North Patagonian Massif, as well as, the Neuquén Basin, indicating that Pliensbachian magmatism was widespread in both regions. The age is also coincident with phase 1 of volcanism of the eastern North Patagonia Massif (188-178 Ma) represented by ignimbrites, domes, and pyroclastic rocks of the Marifil Complex, related to intraplate magmatism.

Benedini, Leonardo; Gregori, Daniel; Strazzere, Leonardo; Falco, Juan I.; Dristas, Jorge A.

2014-12-01

468

Extensional deformation along the southern boundary of the Gyeonggi Massif, South Korea: structural characteristics, age constraints, and tectonic implications  

NASA Astrophysics Data System (ADS)

The Permo-Triassic collision of the North and South China blocks caused the development of the Dabie-Sulu Orogen in China and Songrim Orogen in the Korean Peninsula. Extension after this collision is known from the Dabie-Sulu Orogen, but post-orogenic extension is not well defined in the Korean Peninsula. Extensional deformation along the southern boundary of the Gyeonggi Massif in Korea is characterized by top-down-to-the-south ductile shearing and subsequent brittle normal faulting, and was predated by regional metamorphism and north-vergent contractional deformation. Extension occurred between ~220 and 185 Ma based on the ages of pre-extensional regional metamorphism and post-extensional pluton emplacement. 40Ar/39Ar dating of syn-extensional muscovite in quartz-mica mylonite yields an age of 187.8 ± 5.6 (2 ?) Ma, in agreement with constraints from structural relationships. Together with the extensional deformation identified along the northern boundary of the Gyeonggi Massif (~226 Ma), the extension along the southern boundary is probably related to the exhumation of the massif during late-orogenic or post-orogenic extension associated with the Songrim Orogeny of the Korean Peninsula and forms an important event in the Phanerozoic crustal evolution of East Asia.

Han, Raehee; Min, Kyoungwon; Ree, Jin-Han; Foster, David A.

2014-04-01

469

Extended Grid in the Northeast Cygnus Loop  

NASA Astrophysics Data System (ADS)

We will obtain MDRS spectra at two locations near a Balmer filament in the northeast region of the Cygnus Loop supernova remnant. The first position will be ahead of the filament and the second will be behind it. These observations will supplement the spectra taken at three locations on the filament (part of FUSE program P114). The OVI flux was found to decrease as a function of position downstream behind the shock front. Weak emission on the wings of the primary OVI 1032 component was detected at all three locations. The flux in these weaker components was about the same in all three spectra. The current observations are designed to measure the OVI flux in regions away from the filament. This will allow us to examine the OVI emission that may be present, arising from regions other than the shocked gas in the Balmer filament. We expect he same strength in each of the spectra. The current observations are designed to measure the OVI flux in regions away from the filament. From these measurements we will be able to estimate the contribution of sources other than the primary shock to the total OVI flux in the remnant. In addition to the spectra in the primary aperture (MDRS) we will obtain data in the LWRS aperture, from which we will obtain the OVI flux in regions about 3.5 arcminutes away, but still within the remnant.

Sankrit, Ravi

470

Geochronology and geochemistry of late Paleozoic volcanic rocks on the western margin of the Songnen-Zhangguangcai Range Massif, NE China: Implications for the amalgamation history of the Xing'an and Songnen-Zhangguangcai Range massifs  

NASA Astrophysics Data System (ADS)

We here elucidate the tectonic evolution of the Xing'an and Songnen-Zhangguangcai Range massifs during the early Carboniferous-early Permian, based on zircon U-Pb dating and whole-rock geochemical analyses of volcanic rocks of the Songnen-Zhangguangcai Range Massif in the Sunwu area, Heilongjiang Province, NE China. Euhedral-subeuhedral zircons from three rhyolites and one dacite from the study area display fine-scale oscillatory growth zoning, indicating a magmatic origin. Zircon U-Pb dating by LA-ICP-MS indicates that these acidic volcanic rocks formed in the early Carboniferous-early Permian; i.e., early Carboniferous (~ 351 Ma), early late Carboniferous (~ 319 Ma), and early Permian (295-293 Ma). The early Carboniferous rhyolites exhibit chemical affinities to A-type rhyolites, implying an extensional environment. Their positive ?Hf(t) values (+ 8.67 to + 13.4 except for one spot of + 1.63) and Hf two-stage model ages (TDM2 = 562-988 Ma) indicate that the primary magma was possibly derived from partial melting of newly accreted continental crust. The early late Carboniferous rhyolites and dacites (~ 319 Ma) exhibit calc-alkaline peraluminous signature [molar Al2O3/(CaO + K2O + Na2O) ratio, or A/CNK = 1.04-1.22]. The ?Hf(t) values and TDM2 ages of zircons from the 319 Ma dacites are in the range of + 5.33 to + 9.32 and 907-1268 Ma, respectively, suggesting that the primary magma was derived from partial melting of newly accreted crust. The early Permian rhyolites (295-293 Ma) show chemical affinities to A-type rhyolites, implying an extensional tectonic environment; their positive ?Hf(t) values (+ 8.82 to + 13.8) and Hf two-stage model ages (484-743 Ma) indicate that the primary magma was derived from partial melting of newly accreted crust. Combined with the geochemical features of coeval igneous rocks from the eastern margin of the Xing'an Massif, these data reveal the late Paleozoic tectonic history and relationships of the Xing'an and Songnen-Zhangguangcai Range massifs, i.e., early Carboniferous westward subduction of the Paleo-Asian oceanic plate beneath the Xing'an Massif, followed by early late Carboniferous collision and amalgamation of microcontinental blocks, and early Permian post-collisional extension.

Li, Yu; Xu, Wen-Liang; Wang, Feng; Tang, Jie; Pei, Fu-Ping; Wang, Zi-Jin

2014-09-01

471

Paleomagnetism of the Middle Cretaceous Iritono Granite in the Abukuma Region, Northeast Japan: Implications for the CNS Geomagnetic Field Intensity  

NASA Astrophysics Data System (ADS)

We have studied the paleomagnetism of the middle Cretaceous Iritono granite of the Abukuma massif in northeast Japan. Paleomagnetic samples were collected from ten sites of the Iritono garnite (102 Ma 40Ar- 39Ar age) and two sites of its associated gabbroic dikes. The samples were carefully subjected to alternating field and thermal demagnetizations and to rock magnetic analyses. Most of natural remanent magnetizations show mixtures of two components: (1) H component, high coercivity (Bc > 50-90 mT) or high blocking temperature (Tb > 350-560 C) component and (2) L component, relatively low Bc or low Tb component. H component was obtained from all the 12 sites to give a mean direction of shallow inclination and northwesterly declination (I = 29.9, D = 311.0, 95 = 2.7, N = 12). This direction is different from the geocentric axial dipole field at the present latitude and the typical direction of the Cenozoic remagnetization in northeast Japan. Since rock magnetic properties indicate that H component of the Iritono granite is carried mainly by magnetite inclusions in plagioclase, this component probably retains a primary one. The geomagnetic secular variation could be averaged since the cooling time of the representative blocking temperatures width of H component is estimated to be 40 kyr from the granite body size of about 2 km. Thus the shallow inclination indicates that the Abukuma massif was located at a low latitude (16.1 +/-1.6 N) about 100 Ma and then drifted northward by about 20 deg in latitude. On the other hand, L component is carried mainly by pyrrhotite and its mean direction shows a moderate inclination and a northwesterly declination (I = 42.8, D = 311.5, 95 = 3.3, N = 9). Some thermal event might occur at lower temperature than pyrrhotite Cuire point during the middle Cretaceous to early Cenozoic time to have resulted in partial remagnetization. The stable primary component (H component) is thought to be carried mainly by single-domain magnetite inclusions of granite plagioclase, probably due to the exsolution during the formation, thus paleointensity measurements have been also conducted for Iritono granite samples with less pyrrhotite. The Coe version of the Thellier method yielded 54.5 +/-4.8 micro-T (N = 11), while the LTD-DHT Shaw method gave 67.1 +/-3.1 micro-T (N = 5). The relatively high mean of the LTD-DHT Shaw data may be caused by more effective removal of L component since the inclination of the average direction is shallower in the LTD-DHT Shaw measurements (Im = 22.1) than in the Thellier ones (Im = 28.2). From the LTD-DHT Shaw results, the corresponding VDM is calculated as high value of 16.5 +/-0.8 ZAm2. Since the cooling rate of granite is extremely lower than that in the laboratory, however, some correction is required. If the cooling time of 40 kyr in nature and 100 sec in the laboratory are assumed for single-domain magnetite particles of Tb = 500 C, overestimation of the field intensity is calculated as a factor of 1.4. Applying this value, VDM is reduced to be 11.8 ZAm2. We will also discuss its implication for the CNS geomagnetic field intensity.

Tsunakawa, H.; Wakabayashi, K.; Mochizuki, N.; Yamamoto, Y.

2006-12-01

472

Groundwater hydrodynamics of ancient fan deltas: The case of Sant Llorenç del Munt Massif (NE Spain)  

NASA Astrophysics Data System (ADS)

Hydrogeological models based on well-exposed mountain massifs permitt to constrain the geological factors affecting water circulation and water-rock interaction. Our study adresses the question of how sudden lateral rock changes (sedimentologic facies evolution) affect hydrodinamics in the case of ancient fan deltas. A robust model for the Sant Llorenç del Munt massif (Eocene, Barcelona province) has been defined after the integration of geology (stratigraphy, sedimentology, mapping and integration of subsurface data) and groundwater hydrology (pumping tests, major ions hydrochemistry and environmental isotopes). Ten lito-hidrostratigraphic units have been recognized, which correspond to different sedimentary environments and have a distinctive response to water circulation and water-rock interaction. A remarkable point of this case study is that the size of the whole sedimentary system is considered, i.e. the lateral expansion of flow (lateral permeability barriers) is fully contrained. In terms of hydrogeology, hydraulic conductivity due to fracturing provide poor aquifers in 4 rock types. 5 hydrochemical groups have been established which allow explaining the evolution of the flow throughout the fan delta. Together with isotopic and stratigraphic data the main recharge areas have been determined. Flow dynamics throughout the system combines both surface runoff and subsurface flow. In proximal alluvial conglomerates, groundwater runs both vertically (fractures) and horizontally (fractured and karstified levels). Some features that are generally overlooked in hydrogeological studies (such as conglomerate petrology) are crucial for fracturation and karstic development. Laterally, conglomerates evolve to impermeable mudstones with sandstones (alluvial fan fringe). However, some conglomerates prograding locally reach distal (marine) sediments and recharge the fractured delta front sandstones aquifers that are also refilled by runoff waters. The end sediments (prodelta marls) provide an ultimate permeability barrier of the system. In general, lithologies arrangement due to past fluctuating distribution of sediments (sedimentary architecture) are crucial in the vertical and horizontal location of the aquifers levels. Interestingly, our study based on ancient rocks can also be applied to present day systems. Original sediments with important primary porosity are later better cemented (lithified) into indurated rocks and then more fracturated. So that, it indicates that in current and ancient fan deltas, better aquifers levels develop in the same strata independently of the transmisivity origin (primary porosity or fracturation).

Anglés, Marc; Folch, Albet; Oms, Oriol; Maestro, Eudald; Mas-Pla, Josep

2014-05-01

473

Crustal Structure in the Vicinity of IODP Hole U1309D, Atlantis Massif  

NASA Astrophysics Data System (ADS)

The Atlantis Massif oceanic core complex (OCC) was formed initially by faulting within the axial zone of the Mid-Atlantic Ridge at 30°N, followed by strain localization and unroofing along a detachment surface between 0.5-1.5 Ma. IODP Hole U1309D extends approximately 1.4 km into the Central dome of the Massif and sampled primarily gabbroic rocks. As a relatively deep hole, U1309D is an attractive target for addressing one of the long-term goals of ocean drilling: better integration of borehole geophysical and geologic sampling with surface seismic results. In addition, a number of high quality multichannel seismic (MCS) profiles pass close to the hole. In winter 2012, IODP Expedition 340T reentered U1309D and collected a vertical seismic profile (VSP) as well as high-quality sonic, resistivity, and temperature logs over the entire extent of the Hole. We will present a synthesis, comparing the seismic results from the reprocessing and waveform inversion of all MCS lines passing near Hole U1309D with the results from the new VSP and sonic logs. The waveform inversion results build upon earlier tomographic inversion of downward continued data (Henig et al, 2012) but exhibit significantly improved vertical and horizontal resolution, allowing better integration with the borehole data. Waveform inversion of the nearest flowline MCS profiles that crosses the Central dome just to the north indicates that the original upper surface of the gabbroic body drilled at Hole 1309D now lies just to the west of the hole. Imaging reveals a sharp, almost planar contact, that dips steeply at about 30°. Based upon seismic velocities and seafloor sampling and observations, the rocks on other side of the contact are most likely serpentinized peridotite but other lithologies cannot be ruled out (Henig et al,2012). Reprocessing of the reflection image contains few, if any, coherent reflections from within the core of the gabbroic body but there are reflections adjacent to the western contact and near the eastern edge of the body beneath the volcanic hanging wall in regions where the waveform inversion results show the largest velocity variation. The reflections along the western contact require more analysis but suggest that the fluid flow and alteration patterns within the deeper parts of U1309D could be significantly influenced by proximity to the edge of the gabbroic body.

Harding, A. J.; Arnulf, A. F.

2012-12-01

474

Carbonate platform development in northeast Australia  

SciTech Connect

In northeast Australia, the Great Barrier Reef and the Queensland and Marion plateaus comprise carbonate platforms separated by major rift basins. Cenozoic platform evolution has been dependent upon (1) northward drift of Australia from temperate into tropical latitudes; (2) subsidence pulses in the Eocene/Oligocene and the Pliocene/Pleistocene; (3) sea level oscillations; (4) continental and oceanic influences; and (5) paleophysiography and paleo-ocean chemistry. The evolution of each platform reflects the interaction of these factors on its development. Further, the evolution of the Queensland Plateau has markedly affected that of the Great Barrier Reef through its influence on circulation patterns. In the Eocene/Oligocene, and shelf on which the Great Barrier Reef grew protected the Marion Plateau from terrigenous influences, while in the late Miocene to early Pliocene the Marion Plateau formed the springboard from which the central and southern Great Barrier Reef developed. Models of platform development must take account of 1)early Eocene reef initiation on the Queensland Plateau concomitant with marine transgression into the adjacent rift troughs; 2)Eocene/Oligocene subsidence resulting in stepback of the reefs from the flank of the Queensland Plateau and reestablishment at higher bathymetric levels, concomitant clastic sedimentation along the tropical northern continental margin and temperate(.) carbonate progradation along the margin of the Marion Plateau; 3)extensive growth of Miocene reef complexes on the Queensland Plateau and the initiation of reef complexes on the Marion Plateau and on the northern section of the Great Barrier Reef; and 4)Pliocene subsidence leading to contraction of the area of reef growth on the Queensland Plateau, with almost total drowning of the Marion Plateau and stepback of the Miocene barrier and platform reefs to their present position on the central Great Barrier Reef.

Davies, P.J.; Symonds, P.A.; Feary, D.A.; Pigram, C.J.

1987-05-01

475

Boiling fluids in a region of rapid uplift, Nanga Parbat Massif, Pakistan  

NASA Astrophysics Data System (ADS)

The Nanga Parbat massif of northern Pakistan is currently undergoing rapid uplift (approx. 5-10 mm/a), resulting in near-surface elevated temperatures. Numerous quartz veins cut geologically young structures (less than 2 Ma), attesting to widespread young fluid flow. Fluid inclusions in quartz veins are predominantly low density water vapor (down to 0.05 mg/cu m), with some low density carbon dioxide vapor, and the fluid is predominantly meteoric in origin. Fluid inclusions provide evidence for boiling near to the critical points for water and for 5 wt% NaCl solution (up to 410 C). Head-driven meteoric water was convecting in fracture permeability under hydrostatic pressures which followed the boiling point-depth curve and near-boiling springs emanate from the surface. Hydrostatic pressures persisted to depths of about 6 km below the topographic surface, or near to sea level, where the brittle-ductile transition is inferred to lie. Numerical modeling of conductive heat flow in an area of high relief during rapid uplift indicates that the shape of the near-surface conductive geotherm is significantly influenced by topographic relief. Reasonable approximations for topgraphy at Nanga Parbat produce a conductive geotherm which implies high, near-surface geothermal gradients (greater than 100 C/km, and the isotherms describe a giant pillar of heat. Above about 4 km, fluid temperature is greater than conductive rock temperature in permeable zones which carry convecting boiling meteoric fluid.

Craw, D.; Koons, P. O.; Winslow, D.; Chamberlain, C. P.; Zeitler, P.

1994-12-01

476

Geoelectrical structure across the Bohemian Massif and the transition zone to the West Carpathians  

NASA Astrophysics Data System (ADS)

Geoelectrical methods of magnetotelluric (MT) and geomagnetic deep soundings (GDS) were employed to infer the electrical conductivity structure at depths of specific regions of the Bohemian Massif (BM) and in the transition zone between the BM and the West Carpathians (WCP). Transfer functions between components of temporal variations of the natural electromagnetic field induced in the Earth by external sources were estimated and converted to electrical conductivity (resistivity) profiles. While the results from other regions of the BM are noted in references, the emphasis here is placed on the new analysis of MT/GDS data at field stations along the regional almost 500-km long Deep Seismic Sounding profile No. VI traversing the country from NW to SE. Inversion of its results suggests a complex geoelectrical structure, characteristic for each geological unit, with layers of increased electrical conductivity at crustal and uppermost mantle depths. The results also indicate strong fields of anomalous induction marking geoelectrical inhomogeneities at the eastern margin of the BM and in the foreland of the WCP.

?erv, V.; Ková?iková, S.; Pek, J.; P??ová, J.; Praus, O.

2001-03-01

477

Conjugate shear zones in the Southern Bohemian Massif (Austria): implications for Variscan and Alpine tectonothermal activity  

NASA Astrophysics Data System (ADS)

Mylonitic fabrics developed within conjugate wrench ductile shear and fault systems in the Southern Bohemian Massif display both dextral (NW-SE-trending systems) and sinistral (NE-SW-trending systems) shear senses. Contrasting temperature conditions of deformation can be observed in the different shear zones. Temperatures above 650° C were reached in the Pfahl shear zone. Shearing under greenschist facies conditions took place in the Rodl and Danube shear zones. Brittle deformation dominated in the Vitis and Diendorf shear zones. {40Ar}/{39Ar} dating of various size fractions of muscovite formed and/or deformed during mylonitization yield ages of ca. 287 Ma (the NW-SE-trending system) and ca. 288-281 Ma (the NE-SW-trending system). The shear zones are interpreted as a late Variscan conjugate system. {40Ar}/{39Ar} age spectra of fine-grained newly grown sericite or rejuvenation of ages give evidence for post-Variscan reactivation of the shear zones. Brittle deformation within the shear zones was probably associated with maintenance of very high fluid pressure during Variscan deformation. Foreland deformation during the Alpine orogeny also played a significant role, leading not only to the development of the Ceske Budejovice Graben but also to local reactivation of the shear zones at higher crustal levels.

Brandmayr, Michael; Dallmeyer, R. D.; Handler, Robert; Wallbrecher, Eckart

1995-08-01

478

Metamorphic diamonds in a garnet megacryst from the Edough Massif (northeastern Algeria). Recognition and geodynamic consequences  

NASA Astrophysics Data System (ADS)

We report for the first time the discovery of diamond inclusions (5-30 ?m in size), identified by Raman spectroscopy and the characteristic sharp band at 1332 cm- 1 for crystalline diamond, in a garnet megacryst (? 5 cm) from the Edough Massif (NE Algeria). The garnet is adjacent to actinolite and ultramafic boudins and slices of marbles that are inserted within a major mylonite-ultramylonite band. This tectonic contact sharply delineates the Kef Lakhal oceanic unit from the granite-gneiss core below. The host garnet is almandine-dominant and is rich in exsolution of acicular rutile needles. Major and trace elements show a gradual but significant zonation from core to rim, and a sharp increase in grossular component in the rim. Trace element analyses of prismatic rutile inclusions up to 300 ?m in size indicate that the host metamorphic rock was a mafic protolith of MORB affinity. The Zr-in-rutile thermometry indicates a temperature range of 724-778 °C that we relate to rutile growth, either during prograde metamorphism or under peak UHP metamorphic conditions of ? 3.6 GPa that were reached during subduction of the UHP-rock precursors. We suggest that the mafic protolith originates from the subducted retreating Calabrian branch of the Tethyan slab, that broke or tore, and which fragments were dragged upward and thrust onto the North African margin along with the Kef Lakhal unit, shortly followed by formation of the Edough dome and opening of the Algerian basin.

Caby, Renaud; Bruguier, Olivier; Fernandez, Laure; Hammor, Dalila; Bosch, Delphine; Mechati, Mehdi; Laouar, Rabah; Ouabadi, Aziouz; Abdallah, Nachida; Douchet, Chantal

2014-12-01

479

The limnology and biology of the Dufek Massif, Transantarctic Mountains 82° South  

NASA Astrophysics Data System (ADS)

Very little is known about the higher latitude inland biology of continental Antarctica. In this paper we describe the limnology and biology of the Dufek Massif, using a range of observational, microscopic and molecular methods. Here two dry valleys are home to some of the southernmost biota on Earth. Cyanobacteria were the dominant life forms, being found in lakes and ponds, in hypersaline brines, summer melt water, relict pond beds and in exposed terrestrial habitats. Their species diversity was the lowest yet observed in Antarctic lakes. Green algae, cercozoa and bacteria were present, but diatoms were absent except for a single valve; likely windblown. Mosses were absent and only one lichen specimen was found. The Metazoa included three microbivorous tardigrades ( Acutuncus antarcticus, Diphascon sanae and Echiniscus (cf) pseudowendti) and bdelloid rotifer species, but no arthropods or nematodes. These simple faunal and floral communities are missing most of the elements normally present at lower latitudes in the Antarctic which is probably a result of the very harsh environmental conditions in the area.

Hodgson, Dominic A.; Convey, Peter; Verleyen, Elie; Vyverman, Wim; McInnes, Sandra J.; Sands, Chester J.; Fernández-Carazo, Rafael; Wilmotte, Annick; De Wever, Aaike; Peeters, Karolien; Tavernier, Ines; Willems, Anne

2010-08-01

480

Timescales of regional circulation of saline fluids in continental crystalline rock aquifers (Armorican Massif, western France)  

NASA Astrophysics Data System (ADS)

In recent decades, saline fluids have been sampled worldwide at great depths in continental basements. Although some of them have been attributed to marine transgressions, the mechanisms allowing their circulation are not understood. In this paper, we describe the horizontal and vertical distributions of moderately saline fluids (60 to 1400 mg L-1) sampled at depths ranging from 41 to 200 m in crystalline rock aquifers on the regional scale of the Armorican Massif (northwestern France). The horizontal and vertical distributions of high chloride concentrations are in good agreement with both the altitudinal and vertical limits and the succession of the three major transgressions between the Mio-Pliocene and Pleistocene ages. The mean chloride concentration for each transgression area is exponentially related to the time spanned until the present. It defines the potential laws of leaching (displacement) of marine waters by fresh meteoric waters. The results of the Armorican aquifers provide the first observed constraints for the timescales of seawater circulation in the continental crystalline basement and the subsequent leaching by fresh meteoric waters. The general trend of increasing chloride concentration with depth and the time frame for the flushing process provide useful information to develop conceptual models of the paleo-functioning of Armorican aquifers.

Armandine Les Landes, A.; Aquilina, L.; Davy, P.; Vergnaud-Ayraud, V.; Le Carlier, C.

2015-03-01

481

AMS 14C Dates for Extinct Lemurs from Caves in the Ankarana Massif, Northern Madagascar  

NASA Astrophysics Data System (ADS)

An extensive late Quaternary fauna, including many extinct giant lemurs, has been collected recently in a 110+-km system of caves in the Ankarana Massif of northern Madagascar. AMS 14C dates for the acid-insoluble (collagen/gelatin) fraction of bones of the giant lemur Megaladapis (26,150 ± 400 and 12,760 ± 70 yr B.P.) confirm its presence in the area during the late Pleistocene and provide the first Pleistocene 14 C ages from bones of the extinct megafauna of the island. The first date from bones of the recently described extinct Babakotia radofilai (4400 ± 60 yr B.P.) shows that it was present in northern Madagascar in mid-Holocene times. A comparatively recent age of 1020 ± 50 yr B.P. for the extinct Archaeolemur indicates survival of this genus for at least a millennium after the first direct evidence for humans in Madagascar. This suggests that the island's "extinction window" may have represented a longer time span than would have been expected under the Blitzkrieg model of late Quaternary extinctions. A mid-Holocene age (4560 ± 70 yr B.P.) for a bone sample of the small extant lemur Hapalemur simus indicates that the disappearance of this now-restricted species from the Ankarana occurred after this date. New data from the Ankarana and other sites on the island add to the consensus that major biotic changes occurred on Madagascar in the late Holocene.

Simons, Elwyn L.; Burney, David A.; Chatrath, Prithijit S.; Godfrey, Laurie R.; Jungers, William L.; Rakotosamimanana, Berthe

1995-03-01

482

Raman mapping of coesite inclusions in garnet from the Kokchetav Massif (Northern Kazakhstan).  

PubMed

Coesite inclusions occur in a wide range of lithologies and coesite is therefore a powerful ultrahigh-pressure (UHP) indicator. The transformation of coesite to quartz is evidenced by three optically well identifiable characteristics (e.g. palisade textures, radial crack patterns, polycrystalline quartz pseudomorphs). Under overpressure monomineralic coesite (on an optical basis), lacking the above transformation characteristics may survive. Raman micro-spectroscopy was applied on monomineralic coesite inclusions in garnet porphyroblasts from diamond-bearing garnet-clinozoisite-biotite gneisses of the Barchi-Kol area (Kokchetav Massif, Northern Kazakhstan). These coesite inclusions are euhedral and display a characteristic anisotropic hallo. However, Raman maps and separate spectra of these inclusions display shifted bands for coesite and quartz. Microscopically undetectable, quartz shows on the Raman map as a thin shell around coesite inclusion. Shift of the main coesite band allows to estimate their overpressure: coesite inclusions record 0-2.4 GPa in garnet and zircon. The quartz shell remains under lower pressure 0-1.6 GPa. The possible application of coesite and quartz Raman geobarometers for UHP metamorphic rocks is discussed. PMID:17553735

Korsakov, Andrey V; Hutsebaut, Didier; Theunissen, Karel; Vandenabeele, Peter; Stepanov, Alexander S

2007-12-15

483

Adjusting stream-sediment geochemical maps in the Austrian Bohemian Massif by analysis of variance  

USGS Publications Warehouse

The Austrian portion of the Bohemian Massif is a Precambrian terrane composed mostly of highly metamorphosed rocks intruded by a series of granitoids that are petrographically similar. Rocks are exposed poorly and the subtle variations in rock type are difficult to map in the field. A detailed geochemical survey of stream sediments in this region has been conducted and included as part of the Geochemischer Atlas der Republik O??sterreich, and the variations in stream sediment composition may help refine the geological interpretation. In an earlier study, multivariate analysis of variance (MANOVA) was applied to the stream-sediment data in order to minimize unwanted sampling variation and emphasize relationships between stream sediments and rock types in sample catchment areas. The estimated coefficients were used successfully to correct for the sampling effects throughout most of the region, but also introduced an overcorrection in some areas that seems to result from consistent but subtle differences in composition of specific rock types. By expanding the model to include an additional factor reflecting the presence of a major tectonic unit, the Rohrbach block, the overcorrection is removed. This iterative process simultaneously refines both the geochemical map by removing extraneous variation and the geological map by suggesting a more detailed classification of rock types. ?? 1995 International Association for Mathematical Geology.

Davis, J.C.; Hausberger, G.; Schermann, O.; Bohling, G.

1995-01-01

484

Saldanha Massif, Mid-Atlantic Ridge: A Controlled Source EM Study  

NASA Astrophysics Data System (ADS)

In November-December 2004 a controlled source electromagnetic (CSEM) survey was carried out on the axis of the Mid-Atlantic Ridge during cruise Charles Darwin 167. The work is centred on a non-transform offset between the FAMOUS and AMAR segments, at 36 34' North. Here, a prominent feature is the Saldanha massif: a dome of unroofed mantle rocks, consisting largely of serpentised peridotites, and at whose summit significant low-temperature hydrothermal venting has been documented. Our objective is to determine the distribution of electrical resistivity and hence porosity over a volume of ~ 10 km x 10 km x 3 km vertically, in order to constrain the degree of penetration of seawater into the crust and uppermost mantle; to contrast the porosity structure here with volcanically hosted systems away from segment boundaries elsewhere on the MAR; and to constrain models of non-volcanic heat sources and hydrothermal circulation in ultramafic settings at slow spreading ridges. In addition to the CSEM survey we obtained swath bathymetry, gravity and magnetic data; water column physical properties and seafloor current data; and a number of dredge and gravity core samples. We shall present details of the data and samples, together with our preliminary analysis of the results.

Sinha, M. C.; Santos, F.; Dzhatieva, Z.; Dias, A.; Marques, A. F.; Silva, N.; de Nijs, I.

2005-12-01

485

A large and complete Jurassic geothermal field at Claudia, Deseado Massif, Santa Cruz, Argentina  

NASA Astrophysics Data System (ADS)

Late Jurassic geothermal deposits at Claudia, Argentinean Patagonia, are among the largest (40 km2) and most varied in the Deseado Massif, a 60,000 km2 volcanic province hosting precious metals (Au, Ag) mineralization generated during diffuse back arc spreading and opening of the South Atlantic Ocean. Both siliceous sinter and travertine occur in the same stratigraphic sequence. Deposits range from those interpreted as fluvially reworked hydrothermal silica gels, to extensive apron terraces, to a clustering of high-temperature subaerial vent mounds. Paleoenvironmentally diagnostic textures of sinters include wavy laminated, bubble mat and nodular fabrics, and for travertines comprise fossil terracette rims, wavy laminated, bubble mat, spherulitic, oncoidal, and peloidal fabrics. Of special note is the presence of relatively large (to 25 cm high), inferred subaqueous "Conophyton" structures in travertines, which serve as analogs for some Precambrian stromatolites and imply the presence of relatively deep pools maintained by voluminous spring discharges. The Claudia geothermal field is geographically and geologically linked to the Cerro Vanguardia epithermal project (total resource of ~ 7.8 million ounces Au equivalent) via proximity, similar veins, and structural linkages, making it an especially large and relevant prospect for the region. The combined Claudia-Cerro Vanguardia hydrothermal system likely represents a fortuitous alignment of focused fluid flow and structure conducive to forming a giant epithermal ore deposit, with respect to size, ore concentration and potentially duration, in the Late Jurassic of Patagonia.

Guido, Diego M.; Campbell, Kathleen A.

2014-04-01

486

Raman imaging of fluid inclusions in garnet from UHPM rocks (Kokchetav massif, Northern Kazakhstan).  

PubMed

Confocal Raman imaging of fluid inclusions in garnet porphyroblasts from diamond-grade metamorphic calc-silicate rocks from the Kumdy-Kol microdiamond deposit (Kokchetav Massif, Northern Kazakhstan) reveals that these fluid inclusions consist of almost pure water with different step-daughter phases (e.g., calcite, mica and rare quartz). These fluid inclusions are characterized by negative crystal shape of the host-garnet and they exclusively occur within the core of garnet porphyroblasts. These observations are consistent with their primary origin, most likely at ultrahigh-pressure (UHP) metamorphic conditions. The euhedral newly formed garnet, different in color and composition, was found to be associated with these fluid inclusions. It is proposed that newly formed garnet and water fluid inclusions appear by reaction between the hydrous fluid and the garnet-host. These fluid inclusions provide an unequivocal record of almost pure H(2)O fluids, indicating water-saturated conditions within subducted continental crust during prograde stage and/or ultrahigh-P metamorphism. PMID:21377920

Korsakov, Andrey V; Dieing, Thomas; Golovin, Aleksandr V; Toporski, Jan

2011-10-01

487

Analysis of the upper massif of the craniofacial with the radial method – practical use  

PubMed Central

Introduction The analysis of the upper massif of the craniofacial (UMC) is widely used in many fields of science. The aim of the study was to create a high resolution computer system based on a digital information record and on vector graphics, that could enable dimension measuring and evaluation of craniofacial shape using the radial method. Material and methods The study was carried out on 184 skulls, in a good state of preservation, from the early middle ages. The examined skulls were fixed into Molisson's craniostat in the author's own modification. They were directed in space towards the Frankfurt plane and photographed in frontal norm with a digital camera. The parameters describing the plane and dimensional structure of the UMC and orbits were obtained thanks to the computer analysis of the function recordings picturing the craniofacial structures and using software combining raster graphics with vector graphics. Results It was compared mean values of both orbits separately for male and female groups. In female skulls the comparison of the left and right side did not show statistically significant differences. In male group, higher values were observed for the right side. Only the circularity index presented higher values for the left side. Conclusions Computer graphics with the software used for analysing digital pictures of UMC and orbits increase the precision of measurements as well as the calculation possibilities. Recognition of the face in the post mortem examination is crucial for those working on identification in anthropology and criminology laboratories. PMID:22291834

Lepich, Tomasz; D?bek, Józefa; Stompel, Daniel; Gielecki, Jerzy S.

2011-01-01

488

Lithologic Distribution and Geologic History of the Apollo 17 Site: The Record in Soils and Small Rock Particles from the Highland Massifs  

NASA Technical Reports Server (NTRS)

Through analysis by instrumental neutron activation (INAA) of 789 individual lithic fragments from the 2 mm-4 mm grain-size fractions of five Apollo 17 soil samples (72443, 72503, 73243, 76283, and 76503) and petrographic examination of a subset, we have determined the diversity and proportions of rock types recorded within soils from the highland massifs. The distribution of rock types at the site, as recorded by lithic fragments in the soils, is an alternative to the distribution inferred from the limited number of large rock samples. The compositions and proportions of 2 mm-4 mm fragments provide a bridge between compositions of less than 1 mm fines and types and proportions of rocks observed in large collected breccias and their clasts. The 2 mm-4 mm fraction of soil from South Massif, represented by an unbiased set of lithic fragments from station-2 samples 72443 and 72503, consists of 71% noritic impact-melt breccia, 7% Incompatible-Trace-Element-(ITE)-poor highland rock types (mainly granulitic breccias), 19% agglutinates and regolith breccias, 1% high-Ti mare basalt, and 2% others (very-low-Ti (VLT) basalt, monzogabbro breccia, and metal). In contrast, the 2 mm - 4 mm fraction of a soil from the North Massif, represented by an unbiased set of lithic fragments from station-6 sample 76503, has a greater proportion of ITE-poor highland rock types and mare-basalt fragments: it consists of 29% ITE-poor highland rock types (mainly granulitic breccias and troctolitic anorthosite), 25% impact-melt breccia, 13% high-Ti mare basalt, 31 % agglutinates and regolith breccias, 1% orange glass and related breccia, and 1% others. Based on a comparison of mass- weighted mean compositions of the lithic fragments with compositions of soil fines from all Apollo 17 highland stations, differences between the station-2 and station-6 samples are representative of differences between available samples from the two massifs. From the distribution of different rock types and their compositions, we conclude the following: (1) North-Massif and South-Massif soil samples differ significantly in types and proportions of ITE-poor highland components and ITE-rich impact-melt-breccia components. These differences reflect crudely layered massifs and known local geology. The greater percentage of impact-melt breccia in the South- Massif light-mantle soil stems from derivation of the light mantle from the top of the massif, which apparently is richer in noritic impact-melt breccia than are lower parts of the massifs. (2) At station 2, the 2 mm-4 mm grain-size fraction is enriched in impact-melt breccias compared to the less than 1 mm fraction, suggesting that the <1 mm fraction within the light mantle has a greater proportion of lithologies such as granulitic breccias which are more prevalent lower in the massifs and which we infer to be older (pre-basin) highland components. (3) Soil from station 6, North Massif, contains magnesian troctolitic anorthosite, which is a component that is rare in station-2 South-Massif,contains magnesian troctolitic in impact-melt breccia interpreted by most investigators to be ejecta from the Serenitatis basin.

Jolliff, Bradley L.; Rockow, Kaylynn M.; Korotev, Randy L.; Haskin, Larry A.

1996-01-01

489

A Snowfall Impact Scale Derived from Northeast Storm Snowfall Distributions.  

NASA Astrophysics Data System (ADS)

A Northeast snowfall impact scale (NESIS) is presented to convey a measure of the impact of heavy snowfall in the Northeast urban corridor, a region that extends from southern Virginia to New England. The scale is derived from a synoptic climatology of 30 major snowstorms in the Northeast urban corridor and applied to the snowfall distribution of 70 snowstorms east of the Rocky Mountains. NESIS is similar in concept to other meteorological scales that are designed to simplify complex phenomena into an easily understood range of values. The Fujita scale for tornadoes and the Saffir Simpson scale for hurricanes measure the potential for destruction to property and loss of life by wind-related damage (and storm surge for Saffir Simpson) through use of a categorical ranking (0 or 1 5).

Kocin, Paul J.; Uccellini, Louis W.

2004-02-01

490

Northeast Regional Cancer Institute's Cancer Surveillance and Risk Factor Program  

SciTech Connect

OBJECTIVES The Northeast Regional Cancer Institute is conducting a program of ongoing epidemiologic research to address cancer disparities in northeast Pennsylvania. Of particular concern are disparities in the incidence of, stage at diagnosis, and mortality from colorectal cancer. In northeast Pennsylvania, age-adjusted incidence and mortality rates for colorectal cancer are higher, and a significantly smaller proportion of new colorectal cancer cases are diagnosed with local stage disease than is observed in comparable national data. Further, estimates of the prevalence of colorectal cancer screening in northeast Pennsylvania are lower than the US average. The Northeast Regional Cancer Institute’s research program supports surveillance of common cancers, investigations of cancer risk factors and screening behaviors, and the development of resources to further cancer research in this community. This project has the following specific objectives: I. To conduct cancer surveillance in northeast Pennsylvania. a. To monitor incidence and mortality for all common cancers, and colorectal cancer, in particular, and b. To document changes in the stage at diagnosis of colorectal cancer in this high-risk, underserved community. II. To conduct a population-based study of cancer risk factors and screening behavior in a six county region of northeast Pennsylvania. a. To monitor and document changes in colorectal cancer screening rates, and b. To document the prevalence of cancer risk factors (especially factors that increase the risk of colorectal cancer) and to identify those risk factors that are unusually common in this community. APPROACH Cancer surveillance was conducted using data from the Northeast Regional Cancer Institute’s population-based Regional Cancer Registry, the Pennsylvania Cancer Registry, and NCI’s SEER program. For common cancers, incidence and mortality were examined by county within the region and compared to data for similar populations in the US. For colorectal cancer, the stage at diagnosis of cases diagnosed in northeast Pennsylvania was compared to data from prior years. A population-based interview study of healthy adults was conducted to document the status of cancer screening and to estimate the prevalence of established cancer risk factors in this community. This study is similar in design to that used by the Centers for Disease Control and Prevention’s (CDC) Behavioral Risk Factor Surveillance System (BRFSS). EXPERIMENTAL METHODS AND PROCEDURES: This program includes two distinct but related projects. The first project uses existing data to conduct cancer surveillance in northeast Pennsylvania, and the second is a population-based study of cancer risk factors and cancer screening behaviors in this same population. HUMAN SUBJECTS CONSIDERATIONS This program includes two projects: cancer surveillance and a population-based study of cancer risk factors and screening behavior. The cancer surveillance project involves only the use of existing aggregate data or de-identified data. As such, the surveillance project is exempt from human subjects considerations. The study of cancer risk factors and screening behaviors includes data from a random sample of adult residents of northeast Pennsylvania who are 18 or more years of age. All races, ethnicities and both sexes are included in proportion to their representation in the population. Subjects are interviewed anonymously by telephone; those who are unable to complete an interview in English are ineligible. This project has been reviewed and approved by the Scranton-Temple Residency Program IRB (IRB00001355), which is the IRB for the Northeast Regional Cancer Institute.

Lesko, Samuel M.

2007-07-31

491

Re^Os and Lu^Hf isotope constraints on the origin and age of pyroxenites from the Beni Bousera peridotite massif; implications for mixed peridotite^pyroxenite mantle sources  

E-print Network

A suite of pyroxenites from the Beni Bousera peridotite massif, northern Morocco, have been analysed for Re---Os and Lu---Hf isotopic compositions. Measured sections of the massif indicate that pyroxenite layers make up between 1 and 9 % by volume of the total outcrop. Clinopyroxenes from two Cr

D. G. Pearson; G. M. Nowell

2004-01-01

492

78 FR 717 - ENE (Environment Northeast); Greater Boston Real Estate Board; National Consumer Law Center...  

Federal Register 2010, 2011, 2012, 2013, 2014

...Regulatory Commission [ Docket No. EL13-33-000] ENE (Environment Northeast); Greater Boston Real Estate Board; National...Regulatory Commission (Commission), 18 CFR 385.206, ENE (Environment Northeast), Greater Boston Real Estate Board,...

2013-01-04

493

75 FR 48613 - Fisheries of the Northeastern United States; Northeast Multispecies Fishery; Implementation of...  

Federal Register 2010, 2011, 2012, 2013, 2014

...Northeast Multispecies Fishery; Implementation of Trip Limit for Witch Flounder and Removal of Trip Limit for Pollock AGENCY: National Marine Fisheries...landing limit for witch flounder and removes the trip limit for pollock for Northeast (NE)...

2010-08-11

494

76 FR 18505 - Fisheries of the Northeastern United States; Northeast Skate Complex Fishery; Framework Adjustment 1  

Federal Register 2010, 2011, 2012, 2013, 2014

...States; Northeast Skate Complex Fishery; Framework Adjustment 1 AGENCY: National Marine...regulations to implement measures in Framework Adjustment 1 to the Northeast Skate Complex...Fishery Management Plan (Skate FMP). Framework Adjustment 1 was developed by the...

2011-04-04

495

76 FR 28328 - Fisheries of the Northeastern United States; Northeast Skate Complex Fishery; Framework Adjustment 1  

Federal Register 2010, 2011, 2012, 2013, 2014

...States; Northeast Skate Complex Fishery; Framework Adjustment 1 AGENCY: National Marine...rule implements approved measures in Framework Adjustment 1 to the Northeast Skate Complex...Fishery Management Plan (Skate FMP). Framework Adjustment 1 was developed by the...

2011-05-17

496

78 FR 34587 - Magnuson-Stevens Act Provisions, Fisheries of the Northeastern United States; Northeast (NE...  

Federal Register 2010, 2011, 2012, 2013, 2014

...Northeast (NE) Multispecies Fishery; Framework Adjustment 48; Final Rule; Correction...rule for Northeast (NE) Multispecies Framework Adjustment 48, published on May 3...section referenced in the final rule for Framework Adjustment 48, published on May...

2013-06-10

497

URBAN SPRAWL MODELING, AIR QUALITY MONITORING AND RISK COMMUNICATION: THE NORTHEAST OHIO PROJECT  

EPA Science Inventory

The Northeast Ohio Urban Sprawl, Air Quality Monitoring, and Communications Project (hereafter called the Northeast Ohio Project) provides local environmental and health information useful to residents, local officials, community planners, and others in a 15 county region in the ...

498

40 CFR 81.62 - Northeast Mississippi Intrastate Air Quality Control Region.  

Code of Federal Regulations, 2013 CFR

... false Northeast Mississippi Intrastate Air Quality Control Region. 81.62 Section 81...CONTINUED) DESIGNATION OF AREAS FOR AIR QUALITY PLANNING PURPOSES Designation of Air Quality Control Regions § 81.62 Northeast...

2013-07-01

499

40 CFR 81.62 - Northeast Mississippi Intrastate Air Quality Control Region.  

Code of Federal Regulations, 2014 CFR

... false Northeast Mississippi Intrastate Air Quality Control Region. 81.62 Section 81...CONTINUED) DESIGNATION OF AREAS FOR AIR QUALITY PLANNING PURPOSES Designation of Air Quality Control Regions § 81.62 Northeast...

2014-07-01

500

40 CFR 81.62 - Northeast Mississippi Intrastate Air Quality Control Region.  

Code of Federal Regulations, 2012 CFR

... false Northeast Mississippi Intrastate Air Quality Control Region. 81.62 Section 81...CONTINUED) DESIGNATION OF AREAS FOR AIR QUALITY PLANNING PURPOSES Designation of Air Quality Control Regions § 81.62 Northeast...

2012-07-01