Cannonball Formation
Geologic formation in North Dakota, US
From Wikipedia, the free encyclopedia
The Cannonball Formation is a geologic formation in western North Dakota.[1] It preserves fossils dating back to the Paleogene Period.
TypeFormation
UnderliesBullion Creek Formation, Slope Formation
OverliesHell Creek Formation, Ludlow Formation
RegionNorth Dakota
| Cannonball Formation | |
|---|---|
| Stratigraphic range: Paleogene | |
| Type | Formation |
| Underlies | Bullion Creek Formation, Slope Formation |
| Overlies | Hell Creek Formation, Ludlow Formation |
| Location | |
| Region | North Dakota |
| Country | United States |
