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Pointe aux Chenes Formation | |
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Stratigraphic range: Silurian | |
![]() Mackinac Breccia,
Devonian (St. Ignace Dolomite;
Upper Peninsula of Michigan) | |
Type | Formation |
Unit of | Bass Islands Group |
Underlies | Put-in-Bay Dolomite |
Overlies | Pointe aux Chenes Formation |
Location | |
Region | ![]() |
Country | ![]() |
The St. Ignace Dolomite is a geologic formation in Michigan. It preserves fossils dating back to the Silurian period.