Rushville Shale

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Rushville Shale
Stratigraphic range: Mississippian
Type Formation
Underlies Maxville Limestone
Overlies Logan Formation
Location
Country United States
Extent Ohio

The Rushville Shale is a geologic formation in Ohio. It dates back to the Mississippian.

Ohio State of the United States of America

Ohio is a Midwestern state in the Great Lakes region of the United States. Of the fifty states, it is the 34th largest by area, the seventh most populous, and the tenth most densely populated. The state's capital and largest city is Columbus.

The Mississippian is a subperiod in the geologic timescale or a subsystem of the geologic record. It is the earliest/lowermost of two subperiods of the Carboniferous period lasting from roughly 358.9 to 323.2 million years ago. As with most other geochronologic units, the rock beds that define the Mississippian are well identified, but the exact start and end dates are uncertain by a few million years. The Mississippian is so named because rocks with this age are exposed in the Mississippi River valley.

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References