Brawley Formation
The Brawley Formation is a geologic formation in the Colorado Desert of southern California, located in northwestern Imperial County and eastern San Diego County.[1]
| 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 |
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.[1] 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.[2]
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". Archived from the original on 31 July 2014. Retrieved 8 July 2014.
Further reading
- Weber, F. Harold (1963). Geology and mineral resources of San Diego County, California. California Division of Mines and Geology. p. 33.
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