Ohio Shale

Ohio Shale
Stratigraphic range: Late Devonian
Frasnian
~359.3–371.1 Ma
Black mudshale with glacial striations (Ohio Shale)
TypeFormation
Sub-unitsCleveland Shale
Chagrin Formation
Huron Shale
UnderliesBedford Shale, Berea Sandstone, and Cussewago Sandstone
OverliesJava Formation and Olentangy Shale
Lithology
Primaryshale
Location
RegionOhio
CountryUnited States

The Ohio Shale is a geologic formation in Ohio. It preserves fossils dating back to the Devonian period.