Cuyahoga Formation

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]

Cuyahoga Formation
Stratigraphic range: Mississippian
Meadville Shale Member of the Cuyahoga Formation exposed in Lodi, Ohio.
TypeFormation
Unit ofWaverly Group
Sub-unitsBuena Vista Member, Dugway Member, Fairfield Member, Racoon Shale, Sharpsville Sandstone, Meadville Shale
UnderliesLogan Formation
OverliesSunbury Shale
Location
Region Ohio
Country United States
Wikimedia Commons has media related to Cuyahoga Formation.
Buena Vista Member, Cuyahoga Formation; Reynoldsburg, Ohio
Paleopebble (Dugway Member, Cuyahoga Formation; Licking County, Ohio)
Gray sandstone (Fairfield Member, Cuyahoga Formation; Hocking Hills, Ohio)
Raccoon Shale (Cuyahoga Formation; Heath, Ohio)
Sharpsville Sandstone Member (Cuyahoga Formation; Cuyahoga Falls, Ohio)

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

See also

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


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