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
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. Geologic Survey Bulletin 1200. Washington, D.C.: U.S. Government Printing Office. p. 3552.
  3. Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Archived from the original on 31 July 2014. Retrieved 22 June 2014.


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