| Pinole Tuff Formation | |
| Type: | Geologic formation |
| Age: | Neogene |
| Period: | Neogene |
| Prilithology: | Tuff, breccia |
| Namedfor: | Pinole, California |
| Region: | Contra Costa County California |
| Country: | United States |
| Underlies: | Orinda Formation, Monterey Formation Group units |
| Overlies: | Neroly Formation San Pablo Formation |
| Thickness: | 270m (890feet) |
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.