Focal mechanism of an ancient large magnitude earthquake along the Longmen Shan fault belt, eastern Tibet: constraints from pseudotachylyte and AMS

Lei Zhang1, Haibing Li1, Eric C. Ferré2, Zhiming Sun3, Yu-Min Chou4, Yong Cao Jr3, Wang Huan1 and Chenglong LI1, (1)Key Laboratory of Deep-Earth Dynamics of Ministry of Natural Resources, Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China, (2)University of Louisiana at Lafayette, School of Geosciences, Lafayette, LA, United States, (3)Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing, China, (4)Department of Ocean Science & Engineering, Southern University of Science and Technology, Shenzhen, Guangdong, China