The Claremont Shale is a Miocene epoch geologic formation in the Berkeley Hills of the East Bay region of the San Francisco Bay Area, California.
[1] It is found within the Claremont Canyon area of the Berkeley Hills in Alameda County and Contra Costa County.
[1] The Claremont Shale formation preserves fossils dating back to the Miocene epoch of the Neogene period.
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