Bass Islands Formation
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The Bass Islands Formation is a geologic formation in Michigan. It preserves fossils dating back to the Silurian period.
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Quick Facts Type, Sub-units ...
Bass Islands Formation | |
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Stratigraphic range: Silurian | |
Type | Formation |
Sub-units | St. Ignace Dolomite, Put-in-Bay Dolomite, Tymochtee Dolomite |
Underlies | Amherstburg Formation, Columbus Limestone, and Helderberg Group |
Overlies | Salina Formation |
Location | |
Region | Michigan |
Country | United States |
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