Name: Bakken Formation

Display Field: Formation

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Description: The Bakken Formation is a Late Devonian/Early Mississippian geologic formation that consists of three thin but laterally continuous members spanning portions of Alberta, Manitoba, Montana, North Dakota and Saskatchewan. The members consist of two shale layers confining a sandstone/siltstone layer which is the primary producing layer. In April, 2013 the USGS completed an assessment of the Bakken Formations showing it is currently the largest known continuous oil resource in the contiguous US (Gaswirth et al., 2013,http://pubs.usgs.gov/fs/2013/3013/fs2013-3013.pdf).

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Copyright Text: The boundary was digitized from a map published in Smith and Bustin, 1997 (Regional Sedimentology and Stratigraphy of th eUpper Devonian and Lower Mississippian Bakken Formation, Williston Basin, Saskatchewan Geological Survey Open File Report 96-1) and Smith and Bustin, 2000 (Late Devonian and early Mississippian Bakken and Exshaw black shale source rocks, Western Canada Sedimentary Basin–a sequence stratigraphic interpretation: American Association of Petroleum Geologists Bulletin, 84, no. 7, p. 940–960). We used the Sweetgrass Arch as the western boundary.

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