Cuyahoga Formation
Geologic formation in Ohio
From Wikipedia, the free encyclopedia
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]
TypeFormation
Unit ofWaverly Group
Sub-units
- 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
UnderliesLogan Formation
| Cuyahoga Formation | |
|---|---|
| Stratigraphic range: Mississippian | |
Meadville Shale Member of the Cuyahoga Formation exposed in Lodi, Ohio. | |
| Type | Formation |
| Unit of | Waverly Group |
| Sub-units |
|
| Underlies | Logan Formation |
| Overlies | Sunbury Shale |
| Location | |
| Region | Ohio |
| Country | United States |
Wikimedia Commons has media related to Cuyahoga Formation.
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It preserves fossils dating to the Mississippian subperiod of the Carboniferous period.[3]
