1. Key Laboratory of Orogenic Belts and Crustal Evolution, Department of Geology, Peking University, Beijing, China
2. School of Geoscience and Surveying Engineering, China University of Mining and Technology (Beijing), Beijing, China
3. State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing, China