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

• Earth sciences portal
• California portal
• Paleontology portal

• Quaternary California
• Geology of Imperial County, California
• Geology of San Diego County, California
• List of fossiliferous stratigraphic units in California
• Paleontology in California