Simon L Klemperer¹, Ping Zhao², Laura J Crossey³, Karl E Karlstrom³, Thomas Darrah⁴, Carmen Winn³, Tianze Liu¹, Shiqi Wang¹, Zhongyu Xiong², Xudong Guo², Deng Zeng², David R Hilton⁵ and Lin Ding⁶, (1)Stanford University, Stanford, CA, United States, (2)ITP Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, China, (3)University of New Mexico Main Campus, Albuquerque, NM, United States, (4)Ohio State University Main Campus, School of Earth Sciences, Columbus, OH, United States, (5)Univ California San Diego, La Jolla, CA, United States, (6)Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, China