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Put-in-Bay Dolomite
Stratigraphic range: Silurian
Type	Formation
Unit of	Bass Islands Group
Underlies	Raisin River Dolomite
Overlies	St. Ignace Dolomite
Location
Region	Michigan
Country	United States

The Put-in-Bay Dolomite is a geologic formation in Michigan and Ohio. It preserves fossils dating back to the Silurian period. The type locality is South Bass Island in western Lake Erie.