1. Key Laboratory of Western China's Environmental Systems (Ministry of Education); College of Earth and Environmental Sciences, Lanzhou University; Lanzhou 730000 China
2. Cold and Arid Regions Environmental and Engineering Research Institute; Chinese Academy of Sciences; Lanzhou 730000 China
3. Shandong Institute of geological survey; Jinan 250013 China
4. Pétrologie Sédimentaire; B20, Boulevard du Rectorat, 15, Université de Liège 4000 Liège Belgium
5. State Key Laboratory of Continental Dynamics, Department of Geology; Northwest University; Northern Taibai Str. 229 Xi'an 710069 China
6. No.4 Institute of Geological & Mineral Resources Survey of Henan; Shangqiu 476100 China