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Showing 1 to 8 of 8 for “"Deadwood Formation"”.
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Reservoir characterization of the Deadwood formation western North Dakota, Williston Basin
… the past few decades, the Cambro-Ordovician-aged Deadwood Formation in the Williston Basin was studied by many researchers for oil and gas exploration and alternative energy production. The previous Deadwood Formation published literature documents surface and subsurface research, with the only …
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Stratigraphy and Depositional History of the Deadwood Formation (Upper Cambrian and Lower Ordovician), Williston Basin, North Dakota
<p>Based on gamma-ray characteristics, the Deadwood Formation is divided into six informal, attribute-defined units, members A through F. Members A and Bare Late Cambrian in age; members C through Fare Early Ordovician in age. The type section of the Deadwood, in the northern Black Hills, is …
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Stratigraphy of the Winnipeg and Deadwood Formations in North Dakota
<p>The Deadwood formation includes all of the pre-Winnipeg sedimentary rocks of North Dakota which range in thickness from an erosional edge in the subsurface of northeastern North Dakota to at least 1,000 feet in northwestern North Dakota. It is composed of sandstone, shale, and carbonate of Late …
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Stratigraphy, Sedimentology, and Ichnology of the Middle Cambrian to Lower Ordovician Deposits in Subsurface Western Canada
… the Basal Sandstone Unit (BSU), the Earlie Formation, and the Deadwood Formation. Numerous wells have been drilled through these units since the 1950s, however, just a group of these wells present relatively continuous core recovery available for analyses. The Basal Sandstone Unit is …
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Structural Evolution of the Beaver Lodge Portion of the Nesson Anticline, North Dakota
… North Dakota, has been determined from Cambrian (Deadwood) through Late Cretaceous (Greenhorn) time. Detailed structural data defines two areas of structural closure occurring along a basement structural trend. One of these is the site of a Precambrian topographic high. Detailed isopachous data …
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Depositional environments and history of the Winnipeg Group (Ordovician), Williston Basin, North Dakota
… Williston Basin, North Dakota, contains three formations. They are, in ascending order, the Black Island Formation, herein informally divided into lower and upper members, the Icebox Formation, and the Roughlock Formation. Strata of the Winnipeg Group (maximum thickness 400 ft., 122 m) …
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Carbon cycle changes during the end-Marjuman (Cambrian) extinction in the Southern Appalachians
… a limited amount of carbon isotope data from the Deadwood Formation in the Black Hills of South Dakota suggests the possibility of a small negative ẟ¹³C excursion near the extinction and preceding the SPICE. Previous high-resolution biostratigraphy has identified an expanded record of extinction …
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Depositional environments and paleogeography of the Winnipeg Group (Ordovician), Williston Basin, North Dakota
… (Upper Ordovician) unconformably overlies the Deadwood Formation (Cambrian - Lower Ordovician) over most of North Dakota, except in the extreme eastern part, where it lies directly on Precambrian basement rocks. The Winnipeg is conformably overlain by the Red River Formation (Upper Ordovician). …