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Sentinel Butte Formation

Geological formation in North Dakota, USA

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The Sentinel Butte Formation is a geologic formation of Paleocene age in the Williston Basin of western North Dakota.[1] It preserves significant assemblages of non-marine plant and animal fossils.

Sentinel Butte Formation
Stratigraphic range: Thanetian
~58–55 Ma
↓
Bentonite (Big Blue Bentonite) in the Sentinel Butte Formation (North Dakota)
TypeFormation
Unit ofFort Union Formation
UnderliesGolden Valley Formation
OverliesBullion Creek Formation
Location
RegionNorth Dakota
Country United States

See also

References

  1. ^ Bluemle, John P. 1988. "Generalized Bedrock Geological Map of North Dakota" (PDF). North Dakota Geological Survey, Miscellaneous Map 28. Retrieved 2017-02-03.{{cite web}}: CS1 maint: numeric names: authors list (link)
 

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