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