San Pablo Formation

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

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]

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. ^ a b c 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". Retrieved 17 December 2021.


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