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The Coldwater Shale is a geologic formation in Michigan. It preserves fossils dating back to the Mississippian period.
| Coldwater Shale | |
|---|---|
| Stratigraphic range: Mississippian | |
| Type | Formation |
| Underlies | Marshall Sandstone and New Providence Shale |
| Overlies | Sunbury Shale |
| Location | |
| Region | Indiana, Michigan, and Ohio |
| Country | United States |
References edit
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