The Middle Devonian Dawson Bay Formation carbonate unit is present in the subsurface of North Dakota except where truncated by postdepositional erosion. The carbonate unit thickens from the erosional limit to a maximum thickness of 47.5 m (156 ft) in Renville County and reaches a maximum depth of 3798 m (12,460 ft) below the surface in McKenzie County. In ...

The integration of stratigraphic, geochemical, and biostratigraphic data from Middle Ordovician carbonates and shales indicates that the North American epeiric sea was partitioned into shelf areas with distinct characteristics. The Upper Mississippi Valley part of the epeiric sea was appraised by using regionally traceable and ...

... the capture coefficient and the thermal accommodation coefficient. Experimental results are presented for the cryopumping rates of carbon dioxide ...

General classifications of Phanerozoic carbonate facies and controlling them factors are reviewed. Three principal carbonate factories distinguished by W. Schlager (2000, 2003) are the tropical shallow-water, the cool-water, and the mudmound factories. The general term for facies associations in the first factory is photozoan ...

A lithofacies analysis of the subsurface Atoka clastic rocks in parts of Jack, Palo Pinto, Parker, and Wise Counties, north-central Texas, was designed to provide a meaningful interpretation of depositional environments that existed during Atokan time, as well as the most favorable areas for production of hydrocarbons. The Atoka clastic rocks are the product of the Ouachita orogene interacting ...

improve understanding of their physical and chemical properties, compounds of ... have the requisite liquid crystalline properties. .... Carbon Nanotubes Bend and Buckle to accommodate roughness of the surface of the component to ...

Unusual, concretion-bearing mudrocks of early Cenomanian age, which probably indicate a restricted embayment of the Cretaceous epeiric sea, have been recognized at outcrops in eastern Wyoming and in adjoining areas of Montana, South Dakota, Nebraska, and Colorado. In south-central Johnson County, Wyoming, these rocks are in the lower part of the Frontier Formation and are ...

The Excello Shale is one of the most laterally continuous, thickest, and best exposed examples of a Pennsylvanian cyclothemic black shale in the Mid continent. The distribution of total organic carbon and kerogen types indicate that the Excello black shale was deposited in a epeiric highly productive sea with bottom anoxia. Thin, parallel laminations and ...

Differences in the magnitude of ?13C excursions between platform proximal and platform distal settings in epeiric seas may reflect shelf to basin gradients in seawater ?13CDIC values. One test of this hypothesis is to demonstrate that the gradient is found in both the inorganic and organic carbon fractions of sediment. Investigation of this hypothesis is ...

.S. & Canada,N. Mexico. Epeire glomosa Walckenaer1837(1842). Phillyra mammeata Hentz 1850. Phillyra riparia

by the fullerene and carbon nanotubes12 is that the carbon atoms can form pentagonal and heptagonal carbon rings, the atomic structure of each flake must be one of the known graphite carbon rings, and the graphitic lattice must be modulated to accommodate the curvature of the sphere. The ...

Recent oil and gas discoveries in the Upper Devonian (Fammenian) Wabamun Group of the Peace River arch area, north-central Alberta, have led to a reevaluation of stratigraphic and structural trapping mechanisms. These discoveries have occurred at a number of different intervals within the Wabamun. In the Tangent, Teepee, and Eaglesham areas, fractured and dolomitized mudstones, and grainstones ...

... is required for good accommodation of product LiCl. ... a lithium anode), the main products of reaction ... or increase of cathode polarization, respectively ...

Test Stand 401 is a 10-m-diameter by 11.6-m-high carbon steel altitude chamber, capable of accommodating a vehicle with a thrust vector controlled, ...

misalignment levels, compartment seals capable of accommodating angularities and ... required misalignment levels and provide design guidelines. ...

Because of the high misalignment levels, compartment seals capable of accommodating ... established the misalignment limits of the current technology ...

Deposition of Jurassic epeiric shelf carbonates and evaporates were controlled by epeirogenic movement and sea level fluctuations which formed an excellent combination of source rocks, reservoirs and seats in Abu Dhabi. At the end of the Triassic, a relative drop in sea level, caused by eustatic sea level lowering in conjunction with minor tectonic uplift, ...

The Caddo limestone (Atokan-Desmoinesian) is a regionally extensive carbonate unit present throughout much of north-central Texas. Attaining a maximum thickness of over 600 ft, the Caddo is one of the more prolific oil-and-gas-producing formations of this region. Optimum carbonate deposition occurred within the Pennsylvanian epeiric ...

Unusual, concretion-bearing mudrocks of early Late Cretaceous age, which were deposited in an early Cenomanian epeiric sea, have been recognized at outcrops in eastern Wyoming and in adjoining areas of Montana, South Dakota, Nebraska, and Colorado. In Johnson County, Wyo., on the western flank of the Powder River Basin, these strata are in the lower part of the Belle Fourche ...

Accumulation of rich petroleum source rocks - starved bituminous mudrocks in both the Winnipeg Formation (Middle Ordovician) and Bighorn Group (Upper Ordovician) - is controlled by cyclical deepening events with a frequency of approximately 2 m.y. Tectonics control both this frequency and the location of starved subbasins of source rock accumulation. Deepening cycles initiated starvation of ...

Carbonates of Mississippian age (Vis�an) in the Midale Beds, Charles Formation of southeastern Saskatchewan, Canada, produce significant amounts of hydrocarbons. The Midale Beds represent deposition in a shallow-water, periodically restricted, epeiric setting. The sedimentation is characterized by a variety of shallow-water carbonate ...

The first sediments to onlap the metamorphosed Precambrian Arabian shield were Infracambrian (Proterozoic) to Middle Cambrian carbonates, clastics, and evaporites. The oldest Arabian reservoir rocks occur in the Precambrian to lower Paleozoic Era Salt of the Huqf Group, which forms the Birba field of Oman. The Middle Cambrian sequence was followed by Late Cambrian through ...

Morrowan strata in the Hueco and Franklin Mountains reflect deposition within a shallow, gradually subsiding, carbonate shelf lagoon. Postulated environments fluctuated between open shelf lagoon with localized shoaling, restricted inner shelf lagoon, and peritidal settings. Variations in depth were slight, probably not exceeding several tens of meters within the photic zone. ...

An Early Miocene (Early Burdigalian) incised valley-fill was produced through development of an alluvial system during active extension and block rotation in the Mut Basin. Five phases of alluvial activity have been recognized and are linked to specific tectono-stratigraphic factors. The entrenchment phase (phase 1) was a response to a rapid decrease in accommodation caused by ...

During the earliest Mississippian, much of east-central US was a deep-water black-shale basin formed due to subsidence accompanying Acadian tectonism; by the middle Mississippian, this basin had been transformed into a very shallow epeiric sea characterized by ooid-rich carbonates. This transformation probably occurred in two parts due to flexural ...

The Mission Canyon Formation is a regressive, shoaling-upward carbonate to anhydrite sequence deposited in a slowly shrinking epeiric sea. From its base upsection, the formation is mostly subtidal in origin and emergent at its top, and consists of (1) deeper water carbonates, (2) major cycles of open shallow-marine mudstones grading up ...

... M. Heikoop, and M. J. Risk. 2000b. Normal coral growth rates on dying reefs: Are coral growth rates good indicators of reef health?:. Marine Pollution ... ...

A trace element signature, a characteristic pattern of enrichment and depletion of trace elements, was determined for a group of siliciclastic-carbonate Oxfordian and Kimmeridgian sedimentary strata, collected from outcrops in western Montana, southeastern British Columbia and southern Alberta. The average values, by petrofacies, of 10 major and 18 trace elements were measured ...

Little Knife field is a combination structural and stratigraphic trap located near the structural center of the Williston basin, North Dakota. The field is approximately 12 mi (19.3 km) long and 2.5 to 5.5 mi (4 to 8.9 km) wide. Little Knife was discovered by Gulf Oil in 1976 as part of a regional exploration play involving a transition from impermeable to porous carbonate ...

Most of the Paleozoic section of Williston basin is a thick accumulation of numerous carbonate to evaporite, shallowing-upward, cyclic sequences. These sediments were deposited in broad epeiric seas, and the deposition of the evaporite facies marked the final stage of each cycle. Many of the sequences display a pervasive replacement dolomite in the ...

We explore the role played on the growth of shallow-water carbonates by changes in accommodation using case studies from Late Quaternary to modern carbonate environments, i.e. coral reefs and carbonate platforms and ramps. Accommodation appears not to influence either primary productivity or ...

To accommodate extra electrons or holes injected into a single-wall carbon nanotube, carbon-carbon bonds adjust their lengths. Resulting changes in carbon-nanotube length as a function of charge injection provide the basis for electromechanical actuators. We show that a key mechanism at low injection levels, ...