Imperial Formation
| Imperial Formation Stratigraphic range: 1.) Canada: Devonian of Paleozoic Era. 2.) California: Pliocene of Cenozoic Era. | |
|---|---|
| Type | Two separate geologic formations |
| Underlies | Palm Spring Formation (California) |
| Overlies | Ocotillo Formation (California) |
| Location | |
| Region |
1.) Northwest Territories, Canada 2.) Colorado Desert, Imperial County, California, United States |
The Imperial Formation is the name of two distinct and unrelated geologic formations in North America, of different geologic Eras.
Separate formations
Canadian Paleozoic Era formation
The older Imperial Formation occurs in the Northwest Territories of Canada. It preserves fossils dating back to the Devonian period of the Paleozoic Era. [1]
Californian Cenozoic Era formation
The younger Imperial Formation occurs in the Colorado Desert, in Imperial County of Southern California. It dates to the Zanclean−Lower Pliocene stage of the Pliocene Epoch, during the Quaternary Period of the Cenozoic Era.
It underlies the Palm Spring Formation, and overlies the Ocotillo Formation. [2]
See also
- List of fossiliferous stratigraphic units in California
- List of fossiliferous stratigraphic units in Northwest Territories
- Pliocene California
References
- ↑ Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 8 July 2014.; Paleozoic Era Canada.
- ↑ San Diego State University.edu: "Environments of deposition, Pliocene Imperial Formation, Southeast Coyote Mountains, Imperial County, California"; Bell, Patricia J.; 1980.
| Neogene Period | |||
|---|---|---|---|
| Miocene | Pliocene | ||
| Aquitanian | Burdigalian Langhian | Serravallian Tortonian | Messinian |
Zanclean | Piacenzian | ||
| Paleozoic Era | |||||
|---|---|---|---|---|---|
| Cambrian | Ordovician | Silurian | Devonian | Carboniferous | Permian |
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