Exposed Sediment (IMAGE) Arizona State University Caption Professor J. Ramon Arrowsmith of Arizona State University (second from left), Professor Lisa Grant Ludwig (pointing) and Dr. Sinan Akciz (black shirt) of University of California, Irvine show exposures of sediments in the San Andreas fault zone at Bidart Fan to scientific reviewer, Professor Ray Weldon (far right) of University of Oregon while ASU graduate student (far left) watches. Credit Bidart Fan San Andreas fault research team, University of California Irvine and Arizona State University Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.