Qingda Su^1,2, Junsheng Nie^1,3, Qingquan Meng¹, Richard V Heermance III⁴, Lisha Gong¹, Zeng Luo¹, Zhao Wang¹, Rui Zhang¹ and Carmala N Garzione^5,6, (1)Lanzhou University, College of Earth and Environmental Sciences, Lanzhou, China, (2)State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xian, China, (3)CAS Center for Excellence in Tibetan Plateau Earth Sciences, Chinese Academy of Sciences, Beijing, China, (4)California State University Northridge, Department of Geological Sciences, Northridge, CA, United States, (5)University of Rochester, Department of Earth and Environmental Sciences, Rochester, NY, United States, (6)Rochester Institute of Technology, Department of Environmental Sciences, Rochester, NY, United States