Brawley Formation

Brawley Formation Stratigraphic range:
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.

It occurs in northwestern Imperial County and eastern San Diego County.

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.

It preserves fossils from the Epoch of the Quaternary Period, during the Cenozoic Era.

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