San Benito Gravels
The San Benito Gravels is a Quaternary Epoch geologic formation in California.
| San Benito Gravels Stratigraphic range: Quaternary | |
|---|---|
| Type | Geologic formation |
| Location | |
| Region | San Benito County, California |
| Country | United States |
| Type section | |
| Named for | Lake San Benito (prehistoric) |
Geology
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
The San Benito Gravels formation preserves Cenozoic Era non−marine fossils.[2]
References
- "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.
- Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Archived from the original on 31 July 2014. Retrieved 8 July 2014.
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