Everything sits on bedrock

Alameda County
https://pubs.usgs.gov/of/1996/of96-252/

Contra Costa County
https://pubs.usgs.gov/of/1994/of94-622/

Marin/SF Counties
https://pubs.usgs.gov/mf/2000/2337/

San Mateo County
https://catalog.data.gov/dataset/preliminary-geologic-map-of-san-mateo-county-california-ngmdb

Posted by catchang, January 25, 2017 15:18