Black River Group
Black River Group Stratigraphic range: Late Ordovician | |
---|---|
Type | Group |
Underlies | Lexington Limestone and Trenton Group |
Overlies | St. Paul Group and Wells Creek Formation |
Location | |
Region | Illinois, Ohio, Kentucky and West Virginia |
Country | United States |
The Black River Group is a geologic group in Illinois and West Virginia. It preserves fossils dating back to the Ordovician period.
See also[]
- List of fossiliferous stratigraphic units in Illinois
- List of fossiliferous stratigraphic units in West Virginia
References[]
- Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Archived from the original on 31 July 2014. Retrieved 22 June 2014.
Categories:
- Geologic groups of Illinois
- Ordovician West Virginia
- Illinois geologic formation stubs