Geology and Petrology of the Cambria Felsite, a New Oligocene Formation, West-Central California Coast Ranges Ernst, W. G. ; Hall, C. A. Abstract Publication: Geological Society of America Bulletin Pub Date: 1974 DOI: 10.1130/0016-7606(1974)85<523:GAPOTC>2.0.CO;2 Bibcode: 1974GSAB...85..523E