Cuyahoga Formation Explained

Cuyahoga Formation
Type:	Formation
Age:	Mississippian
Period:	Mississippian
Unitof:	Waverly Group
Subunits:	In Central and Southern Ohio: Meadville Shale Sharpsville Sandstone Racoon Shale Fairfield Member Dugway Member Buena Vista Member In Pennsylvania and North Eastern Ohio Meadville Shale Sharpsville Sandstone Orangeville Shale
Underlies:	Logan Formation
Overlies:	Sunbury Shale

The Cuyahoga Formation is a geologic formation in Ohio. The age of the formation is difficult to determine, because of a lack of diagnostic fossils. Roughly, the formation dates from the Late Kinderhookian (354.8 to 350.8 million years ago) to the Middle Osagean (347.7 to 344.5 million years ago).^[1] Eight members are recognized, among them the Orangeville Shale, Sharpsville Sandstone, and Meadville Shale.^[2]

It preserves fossils dating to the Mississippian subperiod of the Carboniferous period.^[3]

See also

• List of fossiliferous stratigraphic units in Ohio

Notes and References

1. Ausich. William I.. Guenther. Robert L.. Blastoids from the Cuyahoga Formation of Ohio (Echinodermata; Lower Mississippian). Kirtlandia. February 1996. 2. April 8, 2018.
2. Book: Keroher, Grace . Lexicon of Geologic Names of the United States For 1936–1960. Part 3, P–Z . Geological Survey Bulletin . 1966 . U.S. Department of the Interior, Geological Survey . 3552 .
3. Web site: Fossilworks: Gateway to the Paleobiology Database. ((Various Contributors to the Paleobiology Database)). 17 December 2021.