1. Center for Glacier and Desert Research, College of Earth and Environmental Sciences, and Key Laboratory of Mineral Resources in Western China (Gansu Province), School of Earth Sciences, Lanzhou University, Lanzhou, China
2. State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing, China
3. Shixi Operation District, Xinjiang Oilfield Company, PetroChina, Karamay, China