Cannonball Formation

The Cannonball Formation is a geologic formation in western North Dakota.[1] It preserves fossils dating back to the Paleogene Period.

Cannonball Formation
Stratigraphic range: Paleogene
TypeFormation
UnderliesBullion Creek Formation, Slope Formation
OverliesHell Creek Formation, Ludlow Formation
Location
RegionNorth Dakota
CountryUnited 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.


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