Bois Blanc Formation
| Bois Blanc Formation Stratigraphic range: Middle Devonian |
|
|---|---|
| Type | Formation |
| Underlies | Onondaga Limestone and Sylvania Sandstone |
| Overlies | Garden Island Formation and Oriskany Sandstone |
| Location | |
| Region |
 Michigan
|
| Country |
 United States
|
The Bois Blanc Formation is a geologic formation in Michigan. It preserves fossils dating back to the Devonian period.
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Wikipedia