Au Train Formation

Au Train Formation
Stratigraphic range: Early Ordovician
Au Train Formation at Munising Falls (Pictured Rocks National Lakeshore)
TypeFormation
UnderliesBlack River Formation
OverliesMunising Formation
Location
RegionMichigan
CountryUnited States

The Au Train Formation is a geologic formation in Michigan. It preserves fossils dating back to the Ordovician period.

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