作者单位:Huang Teng,Xu Yaoyao(Institute of Earth Science, Cheng du University of Technology, Cheng du 610059,China)Liu Xianfan(Institute of Earth Science, Cheng du University of Technology, Cheng du 610059,China;State Key Laboratory of Geaological Processes and Mineral Resources, China University of Geosciences (Wuhan), Wuhan 430074, China)