Earth:Sentinel Butte Formation
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Short description: Geological formation in North Dakota, USA
| Sentinel Butte Formation Stratigraphic range: Thanetian ~58–55 Ma | |
|---|---|
_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
- List of fossiliferous stratigraphic units in North Dakota
- Paleontology in North Dakota
References
- ↑ Bluemle, John P. 1988. "Generalized Bedrock Geological Map of North Dakota". North Dakota Geological Survey, Miscellaneous Map 28. https://www.dmr.nd.gov/ndgs/documents/Publication_List/pdf/MisMaps/MM-28.pdf.
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