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. [1]
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.
It preserves fossils from the Pleistocene Epoch of the Quaternary Period, during the Cenozoic Era. [2]