Remnant sea stacks on an uplifted, Pleistocene, wave cut terrace, on the north coast of Sonoma County, north of San Francisco California, have localized mirror-like polish on their surfaces which extends over areas up to 4 meters high. Scanning electr . . .

A detailed Geologic Map of 14 sections around Cazadero village in western Sonoma County. Scale 1:12000. Compiled 1994. Has accompanying booklet filed separately,containing a discussion of the geology and an appendix listing all exotic blocks, their si . . .

This report contains the detailed geology of all known active Sonoma County rock quarries. In addition to the geology, information on reserves, material uses, history, and owner's future plans is included where available.

The purpose of this study was to do a reconnaissance of potential major hardrock resources areas in Sonoma County, California. The study is the second part of an overall study of hardrock quarries in the county, and is a component of the Sonoma County . . .