The San Benito Gravels is a Quaternary Epoch geologic formation in California.

San Benito Gravels
Stratigraphic range: Quaternary
TypeGeologic formation
Location
RegionSan Benito County, California
CountryUnited States
Type section
Named forLake San Benito (prehistoric)

Geology

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The Pleistocene Period Lake San Benito and others were formed in the prehistoric Pajaro River-San Benito River basin. The lakes were along 10 miles (16 km) on each side of the San Andreas Fault, the movements of which were responsible for the formation of those lakes.[1]

The Purisima Formation surrounds the San Benito Gravels, and was a primary source of the silt and gravels deposited in them.[1]

The present day San Benito River cuts a channel through the formation.

Fossils

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The San Benito Gravels formation preserves Cenozoic Era non−marine fossils.[2]

See also

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References

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  1. ^ a b "Pleistocene Lake San Benito", by Olaf P. Jenkins, retired Chief of the California Division of Mines and Geology, from California Geology, July 1973, Vol. 26, No. 7.
  2. ^ Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.