Briones Formation

Briones Formation
Stratigraphic range: Miocene
Type Geologic formation
Underlies San Pablo Formation
Location
Region Contra Costa County,
California
Country United States
Type section
Named for Briones Hills

The Briones Formation is an Late/Upper Miocene epoch geologic formation of the East Bay region in the San Francisco Bay Area, California. [1]

It is found in western Contra Costa County. [1]

It preserves fossils dating back to the Late/Upper Miocene epoch of the Neogene period. [2]

See also

References

  1. 1 2 Google Books: "Names and Definitions of the Geologic Units of California", Issues 825-830, pg 73.
  2. Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 8 July 2014.
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