1998. 2002-06-01T04:00:00Z. 2016-07-20T21:08:17Z. Geological Survey (U.S.). U.S. Geological Survey ; For sale by U.S. Geological Survey, Map Distribution. English. cartographic image. Public. California, San Francisco Bay Area, California, Northern, San Francisco Bay Area (Calif.), California, Northern., and San Francisco Bay Area.