1. School of Geographic Sciences, Qinghai Normal University, Xining, China
2. Key Laboratory of the Northern Qinghai–Tibet Plateau Geological Processes and Mineral Resources, Qinghai Geological Survey Institute, Xining, China
3. School of Geology and Environment, Xi’an University of Science and Technology, Xi’an, China
4. The Third Geological Exploration Institute of Qinghai Non-ferrous Bureau, Xining, China