Geology and Minerals

Chagrin Shale

The Chagrin Shale is a shale geologic formation in the eastern United States that is approximately 365 million years old. The Chagrin Shale is a gray shale that begins thin and deep underground in north-central Ohio. As it proceeds east, the formation thickens, rises to the surface, and contains greater amounts of siltstone.

Also on this shelf

See also

• ▸Green Lake (Hawaii)
• ▸1900–1904 San Francisco plague
• ▸Galbreath Wildlands Preserve

Uncatalogued shelf

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