Pinole Tuff Formation

Geologic formation in California, United States

Pinole Tuff Formation

Stratigraphic range: Neogene
Type| Geologic formation
Underlies| Orinda Formation,
Monterey Formation Group units
Overlies| Neroly Formation
San Pablo Formation
Thickness| 270 metres (890 ft)
Lithology
Primary| Tuff, breccia
Location
Region| Contra Costa County
California
Country| United States
Type section
Named for| Pinole, California

The Pinole Tuff Formation is a geologic formation of the East Bay region of the San Francisco Bay Area in California.

It is found near Pinole and Rodeo area at San Pablo Bay and the Briones Hills of western Contra Costa County.

Fossils

It preserves fossils, including Oncorhynchus rastrosus[1] and fragments of a proto-hipparion prehistoric horse, dating back to the Neogene period.

## See also

[edit]

* Earth sciences portal
* California portal
* Paleontology portal

* List of fossiliferous stratigraphic units in California
* Paleontology in California

## References

[edit]

1. ^ Cavender, Ted M.; Miller, Robert Rush (1972). "Smilodonichthys Rastrosus: A New Pliocene Salmonid Fish from Western United States". Bulletin of the Museum of Natural History. 18. University of Oregon.

* Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.

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