Palm Spring Formation
| Palm Spring Formation | |
|---|---|
| Stratigraphic range: Lower Pleistocene | |
| Type | Geologic formation |
| Underlies | Vallecito Badlands |
| Overlies | Imperial Formation, Ocotillo Formation |
| Location | |
| Region | Colorado Desert, California |
| Country | United States |
The Palm Spring Formation is a Pleistocene Epoch geologic formation in the eastern Colorado Desert of Imperial County and San Diego County County, Southern California.
Geology
The Palm Spring Formation is an extensively-exposed delta-plain deposit debouched by the ancestral Colorado River across the subsiding Salton Trough. [1] It records the development of the prehistoric Colorado River delta cone into a barrier excluding marine waters from the Salton Trough. [2]
Fossils
It preserves fossils from the Pleistocene Epoch, during the Quaternary Period of the Cenozoic Era. [3]
Lower Pliocene sub−period petrified wood is found in Anza-Borrego Desert State Park. [4] The Lauraceae is represented by petrified Umbellularia, the Salicaceae with petrified Populus and Salix, and the Juglandaceae with petrified Juglans. [4]
See also
- Ocotillo Formation — fluvial-alluvial fan Pliocene formation
- Quaternary California
- List of fossiliferous stratigraphic units in California
- Paleontology in California
References
- ^ National Park Service: "The FISH CREEK CANYON ICHNOFAUNA: a PLIOCENE (BLANCAN) Vertebrate Footprint Assemblage from Anza-Borrego Desert State Park, California"; by Paul Remeika.
- ^ San Diego State University.edu: "Environments of deposition, Pliocene Imperial Formation, Southeast Coyote Mountains, Imperial County, California"; Bell, Patricia J.; 1980.
- ^ Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 8 July 2014.
{{cite web}}:|author=has generic name (help) - ^ a b Sciencedirect.com: "Lower Pliocene petrified wood from the Palm Spring Formation, Anza Borrego Desert State Park, California"; Review of Palaeobotany and Palynology Volume 56, Issues 3–4, September 1988, Pages 183-198.
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