San Pablo Formation
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| San Pablo Formation | |
|---|---|
| Stratigraphic range: Miocene | |
| Type | Geologic formation |
| Sub-units | Briones Sandstone, Cierbo Sandstone, Neroly Sandstone |
| Underlies | Pinole Tuff Formation |
| Thickness | 1,500 feet (460 m) |
| Location | |
| Region | Contra Costa County, California |
| Country | United 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
[edit | edit source]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
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- Miocene California geology
- List of fossiliferous stratigraphic units in California
- Paleontology in California
References
[edit | edit source]- ^ a b c Google Books: "Names and Definitions of the Geologic Units of California", Issues 825-830, pg 73.
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