Collingwood Shale
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| Collingwood Shale | |
|---|---|
| Stratigraphic range: Middle Ordovician | |
| Type | Formation |
| Underlies | Bill's Creek Shale |
| Overlies | Trenton Formation |
| Location | |
| Region | Michigan |
| Country | United States |
The Collingwood Formation is a geologic formation in Michigan. It preserves fossils dating back to the Ordovician period.
See also
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References
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Categories:
- Ordovician System of North America
- Ordovician Michigan
- Oil shale in the United States
- Oil shale formations
- Oil-bearing shales in the United States
- Ordovician southern paleotropical deposits
- Middle Ordovician Series
- Geologic formations of Michigan
- Midwestern United States geologic formation stubs
- Michigan stubs