Bakken Formation

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. Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made regarding the display or utility of the data on any other system, or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. The U.S. Geological survey shall not be held liable for improper or incorrect use of the data described and/or contained herein. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.