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The AAPG/Datapages Combined Publications Database
Rocky Mountain Association of Geologists
Abstract
Chapter 1: Revised Nomenclature for the Bakken Formation (Mississippian-Devonian), North Dakota
Abstract
The term “Sanish” has been used to refer to a sandy interval between the Three Forks Formation and the Bakken Formation. It has been variously assigned to the Three Forks or Bakken by different workers. We propose the name “Pronghorn Member” be assigned to the strata formerly referred to as “Sanish”, and that the Pronghorn be included in the Bakken Formation as the lowest member. Second, we recommend that the members of the Bakken Formation in North Dakota be formally named to correspond with usage in Montana, Saskatchewan, and Manitoba. New standard subsurface reference sections are proposed for each of the above members and formations. Finally, we recommend abandonment of the term “Sanish” due to its inconsistent and contradictory usage.
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