FINAL TECHNICAL REPORT HOLOCENE GEOLOGIC CHARACTERIZATION OF THE NORTHERN SAN ANDREAS FAULT, GUALALA, CALIFORNIA Recipient: 2William Lettis & Associates, Inc. 1777 Botelho Drive, Suite 262 Walnut Creek, CA 94596 Phone: (925) 256-6070; Fax: (925) 256-6076 www.lettis.com;
[email protected] Principal Investigators: Rich D. Koehler1 and John N. Baldwin2 Contributors: Carol S. Prentice3, and Justin Pearce2 1 Center for Neotectonic Studies University of Nevada, Reno, MS 169 Reno, NV 89557
[email protected] 3U.S. Geological Survey 345 Middlefield Rd, MS 977 Menlo Park, CA 94025
[email protected] Program Element I Keywords: Paleoseismology, geologic mapping, LIDAR, 1906 rupture U.S. Geological Survey National Earthquake Hazards Reduction Program Award No. 03HQGR0045 November 2005 Research supported by U.S. Geological Survey (USGS), Department of Interior, under USGS award number 03HQGR0045. The views and conclusions contained in this document are those of the authors and should not be interpreted as necessarily representing the official policies, either expressed or implied, of the U.S. Government. HOLOCENE GEOLOGIC CHARACTERIZATION OF THE NORTHERN SAN ANDREAS FAULT, GUALALA, CALIFORNIA Award No. 03HQGR0045 Principal Investigators: Rich D. Koehler1 and John N. Baldwin2 Contributors: Carol S. Prentice3, and Justin Pearce2 1 Center for Neotectonic Studies, University of Nevada, Reno, MS 169, Reno, NV 89557
[email protected] 2William Lettis & Associates, Inc., 1777 Botelho Drive, Suite 262, Walnut Creek, CA 94596 Phone: (925) 256-6070; Fax (925) 256-6076; www.lettis.com;
[email protected] 3U.S. Geological Survey, 345 Middlefield Rd, MS 977, Menlo Park, CA 94025;
[email protected] ABSTRACT We performed detailed geomorphic mapping of active traces of the northern San Andreas Fault along a 24-km section in Mendocino and Sonoma Counties in northern California.