Ocotillo Formation

The Ocotillo Formation is a Pliocene fluvial-alluvial fan geologic formation in the Colorado Desert of Southern California.[1]

Ocotillo Formation Stratigraphic range: Pliocene
Type	Geologic formation
Underlies	Palm Spring Formation
Overlies	Brawley Formation
Location
Region	Colorado Desert, California
Country	United States
Type section
Named for	Brawley, California

It occurs in western Imperial County and eastern San Diego County.[2]

Geology

The formation overlies the Brawley Formation and the Palm Spring Formation. In the Mecca Hills, it is younger than 765,000 years.

Fossils

It preserves fossils and petrified wood, from the Pliocene Epoch of the Neogene Period, within Anza-Borrego Desert State Park.[1][3]

See also

• Pliocene California
• List of fossiliferous stratigraphic units in California
• Paleontology in California

References

1. National Park Service: "The FISH CREEK CANYON ICHNOFAUNA: a PLIOCENE (BLANCAN) Vertebrate Footprint Assemblage from Anza-Borrego Desert State Park, California"; by Paul Remeika.
2. 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.
3. 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.
• Hoetker, Geoffrey M.; Gobalet, Kenneth W. (2 August 1999). "Fossil Razorback Sucker (Pisces: Catostomidae, Xyrauchen texanus) from SoutheasternCalifornia". Copeia. 1999 (3): 755–759. doi:10.2307/1447609. JSTOR 1447609.