Blackleaf Formation
The Blackleaf Formation is a geologic formation in Montana. It preserves fossils dating back to the Albian to Cenomanian stages of the Cretaceous period.
Blackleaf Formation | |
---|---|
Stratigraphic range: late Albian-Cenomanian ~ | |
Type | Formation |
Unit of | Colorado Group |
Lithology | |
Primary | Mudstone, sandstone |
Other | Shale, siltstone |
Location | |
Coordinates | 44.5°N 112.6°W |
Approximate paleocoordinates | 45.9°N 72.3°W |
Region | Montana |
Country | United States |
Blackleaf Formation (the United States) Blackleaf Formation (Montana) |
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.