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Sentinel Butte Formation

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Sentinel Butte Formation
Stratigraphic range: Thanetian
~58–55  Ma
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Big Blue Bentonite (Sentinel Butte Formation, Upper Paleocene; Coal Vein Trail, Roosevelt National Park, Little Missouri Badlands, North Dakota, USA) 5.jpg
Bentonite (Big Blue Bentonite) in the Sentinel Butte Formation (North Dakota)
Type Formation
Unit of Fort Union Formation
Underlies Golden Valley Formation
Overlies Bullion Creek Formation
Location
Region North Dakota
Country United States

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.

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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