Bois Blanc Formation

Bois Blanc Formation
Stratigraphic range: Middle Devonian
TypeFormation
UnderliesOnondaga Limestone and Sylvania Sandstone
OverliesGarden Island Formation and Oriskany Sandstone
Location
RegionMichigan and Ohio
CountryUnited States

The Bois Blanc Formation is a geologic formation in Michigan. It preserves fossils dating back to the Devonian period.