Aspen Shale
From Wikipedia, the free encyclopedia
| Aspen Shale | |
|---|---|
| Stratigraphic range: Cretaceous | |
| Type | Formation |
| Location | |
| Region | Wyoming |
| Country | United States |
The Aspen Shale is a geologic formation in Wyoming, United States. It preserves fossils dating back to the Cretaceous period.
