1. Hunan Key Laboratory of Archaeometry and Conservation Science, Hunan Museum, Changsha, Hunan, China
2. State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan, China
3. Sci-Tech Archaeology Center, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, China,
4. State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing, China,