This book is a guidebook to the geology of the San Francisco Bay Counties, providing information about the landscape, fossils, minerals, and industry of the region, as well as routes for travel. The authors, including the California Division of Mines, Charles Volney Averill, and Olaf Pitt Jenkins, provide a comprehensive overview of the geology of the region that will be useful to anyone interested in the natural history of the area.

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it.

This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.

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