作者单位:Juanjuan Kong(School of Earth Sciences,Lanzhou University,Lanzhou 730000,China)Yaoling Niu(Department of Earth Sciences,Durham University,Durham DH1 3LE,UK;Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China;School of Earth Science and Resources,China University of Geosciences,Beijing 100083,China)