Auxiliary Material for 2013GL056744 Stable, Rapid Rate of Slip Since Inception of the San Jacinto Fault, California Kimberly Blisniuk Department of Earth and Planetary Sciences, University of California, Berkeley, CA 94709 USA Michael Oskin Department of Geological Sciences, University of California, Davis, CA 95616 USA Anne-Sophie Mériaux School of Geography, Politics and Sociology, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK Thomas Rockwell Department of Geological Sciences, San Diego State University, San Diego, CA 92182 USA Robert C. Finkel Lawrence Berkeley National Laboratory, Berkeley, CA 94709 USA Frederick J. Ryerson Lawrence Livermore National Laboratory, Livermore, CA 94551 USA Introduction Auxiliary material for this article contains 1 text file, 2 figures and 3 tables. The material explains how ages are calculated, summarizes observations made in the field, summarizes all the chemistry data for our geochronologic data and summarizes the offsets fault slip rates in the article. 1. 2013gl056744-txts01.pdf Text S1. Discussion of age calculation 2. 2013gl056744-fs01.pdf Figure S1. LiDAR image showing the maximum (top panel) and minimum (bottom panel) reconstruction of the offset channels determined in this study. The white arrows identify the dashed line used to reconstruct the offset. The uncertainty in the offset of 50 m is based on the maximum distance that allows for the realignment of the northeast walls of channels 1 and a (upper panel) and the minimum distance is based on the realignment of the northwest walls of channel 1 to the active part of channel 1. 3. 2013gl056744-fs02.pdf Figure S2. Supplemental Figure 2. Field photos (A) Field photo of the offset metamorphic rich alluvium, (B) Field photo of the metamorphic alluvium overlying the Bishop Ash and (C) Field photo of the tonalitic rich alluvium overlying and in contact with the metamorphic rich alluvium. The burial sample was collected ~10-20 cm above this contact. 4. 2013gl056744-ts01.pdf Table S1. Summary of 10Be exposure ages for dated alluvial fan surfaces at Anza 5. 2013gl056744-ts02.pdf Table S2. Summary of age, inheritance, and denudation rate statistics derived from simulating 10Be concentrations 6. 2013gl056744-ts03.pdf Table S3. Values used to determine San Jacinto fault slip rates