Humbug Formation
The Humbug Formation is a geologic formation in Utah. It preserves fossils dating back to the Mississippian (Meramecian) of the Carboniferous period.
| Humbug Formation Stratigraphic range: Mississippian (Meramecian) 345–336 Ma | |
|---|---|
| Type | Formation |
| Thickness | More than 2,100 feet (640 m) (Stansbury Island) |
| Lithology | |
| Primary | Dolomite |
| Location | |
| Coordinates | 40.2°N 111.7°W |
| Approximate paleocoordinates | 3.1°S 46.9°W |
| Region | Utah |
| Country |  United States |
  Humbug Formation (the United States)  Humbug Formation (Utah) | |
Description
The Humbug Formation includes intercalated limestones, orthoquartzitic sandstones, and dolomite. It is more than 2,100 feet (640 m) thick on Stansbury Island but thins to the east and south. There the formation averages about 600 feet (180 m) thick.[1]
Fossil content
The following fossils have been reported from the formation:[1]
- Bryozoans
- Fenestella acarinata
- F. crockfordae
- F. hamithensis
- F. rarinodosa
- F. serratula
- F. tooelensis
- F. trifurcata
- Hemitrypa reticulata
- Polypora micronodosa
- P. stansburyensis
- Ptylopora eliasi
- Septopora sp.
References
- Humbug Formation at Fossilworks.org
Bibliography
- L. H. Burckle. 1960. Some Mississippian fenestrate bryozoa from central Utah. Journal of Paleontology 34(6):1077-1098
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