Trenton Formation
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Trenton Formation | |
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Stratigraphic range: Middle-Upper Ordovician | |
![]() Trenton Formation in Canada | |
Type | Formation |
Sub-units | Groos Quarry & Chandler Falls Members |
Underlies | Collingwood Shale, Point Pleasant Formation & Scales Shale |
Overlies | Black River & Plattin Formation |
Lithology | |
Primary | Limestone |
Location | |
Region | Indiana, Michigan, Ohio, and Virginia[1] |
Country | ![]() ![]() |
Extent | Appalachia, Midwestern and Southeastern United States |
The Trenton Formation is a geologic formation in Michigan. It preserves fossils dating back to the Ordovician period.
See also
References
- Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Archived from the original on 31 July 2014. Retrieved 22 June 2014.
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