Gallatin Formation | |
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Stratigraphic range: Cambrian | |
![]() Gallatin Formation with fault on the south side of the Big Horn Mountains | |
Type | Formation |
Underlies | Bighorn Dolomite |
Overlies | Gros Ventre Formation |
Thickness | 180-300 feet |
Lithology | |
Primary | Limestone |
Location | |
Region | Wyoming, Montana |
Country | United States |
The Gallatin Formation is a geologic formation in Wyoming and Montana. It preserves fossils dating back to the Cambrian period.