| Brawley Formation | |
|---|---|
| Stratigraphic range: Pleistocene | |
| Type | Geologic formation |
| Overlies | Ocotillo Formation |
| Location | |
| Region | Colorado Desert, California |
| Country | United States |
| Type section | |
| Named for | City of Brawley |
The Brawley Formation is a geologic formation in the Colorado Desert of Southern California, located in northwestern Imperial County and eastern San Diego County.
Geology
Sandstone and mudstone of the Brawley Formation accumulated between ~1.1 and ~0.6–0.5 Ma in a delta on the margin of an arid Pleistocene lake. It is in the San Jacinto Fault Zone area, including in the San Felipe Hills.
Fossils
It preserves fossils from the Pleistocene Epoch of the Quaternary Period, during the Cenozoic Era.
See also
- Quaternary California
- Geology of Imperial County, California
- Geology of San Diego County, California
- List of fossiliferous stratigraphic units in California
- Paleontology in California
References
- ^ Kirby, S. M.; Janecke, S. U.; Dorsey, R. J.; Housen, B. A.; Langenheim, V. E.; McDougall, K. A.; Steely, A. N. (January 2007). "Pleistocene Brawley and Ocotillo Formations: Evidence for Initial Strike-Slip Deformation along the San Felipe and San Jacinto Fault Zones, Southern California". The Journal of Geology. 115 (1): 43–62. Bibcode:2007JG....115...43K. doi:10.1086/509248. JSTOR 509248.
- Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.
Further reading
- Weber, F. Harold (1963). Geology and mineral resources of San Diego County, California. California Division of Mines and Geology. p. 33.
| Quaternary Period | |||||
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