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Foraminiferida Of The Madison Group (Mississippian) Of The Williston Basin, North Dakota, Kurt E. Eylands
Foraminiferida Of The Madison Group (Mississippian) Of The Williston Basin, North Dakota, Kurt E. Eylands
Theses and Dissertations
More than 1500 thin-sections from 73 wells in the North Dakota part of the Williston Basin were searched for their foraminiferal content. This thin-section survey of the Bottineau, Tilston, Frobisher-Alida, and Ratcliffe intervals yielded more than 700 identifiable foraminifers assigned to 26 species.
Most of the Madison foraminifers of the Williston Basin can be placed in one of two superfamilies, the Tournayellac1a and the Endothyracea. The Bottineau and T11ston intervals yielded more specimens from the superfamily Tournayellacea while the Frobisher-Alida and Ratcliffe intervals yielded more specimens from the superfamily Endothyracea.
The foraminifers occurred in irregular stratigraphic zones The Bottineau and …