| Humbug Formation | |
|---|---|
| Stratigraphic range: Mississippian (Meramecian) | |
| Type | Formation |
| Thickness | More than 2,100 feet (640 m) (Stansbury Island) |
| Lithology | |
| Primary | Dolomite |
| Location | |
| Coordinates | 40°12′N111°42′W / 40.2°N 111.7°W |
| Approximate paleocoordinates | 3°06′S46°54′W / 3.1°S 46.9°W |
| Region | Utah |
| Country | United States |
  Humbug Formation (the United States)  Humbug Formation (Utah) | |
The Humbug Formation is a geologic formation in Utah. It preserves fossils dating back to the Mississippian (Meramecian) of the Carboniferous period.