1. Department of Earth and Environmental Sciences University of Rochester Rochester NY USA
2. State Key Laboratory of Loess and Quaternary Geology Institute of Earth Environment, CAS Xi'an China
3. Laboratoire Géosciences Rennes, CNRS‐UMR6118 Université Rennes 1, Observatoire des Sciences de l'Univers Rennes France
4. Key Laboratory of Orogenic Belts and Crustal Evolution, Ministry of Education, School of Earth and Space Sciences Peking University Beijing China
5. Qinghai Oilfield Company, PetroChina Dunhuang Gansu China