Earth:Briones Formation

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Briones Formation
Stratigraphic range: Miocene
TypeGeologic formation
UnderliesSan Pablo Formation
Location
RegionContra Costa County,
California
CountryUnited States
Type section
Named forBriones Hills

The Briones Formation is a 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