1. State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences (Beijing), Beijing100083, China
2. State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang550081, China
3. Department of Geology, University of Illinois at Urbana−Champaign, Urbana, Illinois61801, United States
4. Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing100029, China