San Pablo Formation

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

San Pablo Formation
Stratigraphic range: Miocene
TypeGeologic formation
Sub-unitsBriones Sandstone, Cierbo Sandstone, Neroly Sandstone
UnderliesPinole Tuff Formation
Thickness1,500 feet (460 m)
Location
RegionContra Costa County,
California
CountryUnited States

It is found on the south shore of San Pablo Bay, in western Contra Costa County.[1]

Geology

It is series of marine sandstones with tuffs and ashes. Its subunits, listed alphabetically, are Briones Sandstone, Cierbo Sandstone, Neroly Sandstone,[2] and underlies the Pinole Tuff Formation.[1]

It preserves fossils dating back to the Neogene period.[3]

See also

References

  1. Google Books: "Names and Definitions of the Geologic Units of California", Issues 825-830, pg 73.
  2. K. J. Murata; Karen R. Whiteley (1973). "Zeolites in the Miocene Briones Sandstone and related formations of the central Coast Ranges, California" (PDF). Journal of Research of the U.S. Geological Survey. 1 (3): 255. ISSN 0091-374X. Wikidata Q93281155.
  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.


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