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Thunder Bay Limestone
Geological Formations / From Wikipedia, the free encyclopedia
The Thunder Bay Limestone is a geologic formation in Michigan. It preserves fossils dating back to the Devonian period.
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/3/3d/An_examination_of_the_Devonian_fishes_of_Michigan_fig-1-full.png/640px-An_examination_of_the_Devonian_fishes_of_Michigan_fig-1-full.png)
Quick Facts Type, Unit of ...
Thunder Bay Limestone | |
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Stratigraphic range: Middle Devonian (Givetian)[1] | |
Type | Geological formation |
Unit of | Traverse Group[1] |
Sub-units | Partidge Point Member, Potter Farm Member, and Norway Point Member |
Underlies | Kettle Point Formation and Squaw Bay Limestone |
Overlies | Potter Farm Formation[1] |
Location | |
Region | ![]() |
Country | ![]() |
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