作者单位: | 1 College of Earth Sciences, Chengdu University of Technology, Sichuan Province, Chengdu 610059, China; 2 Key Laboratory of Applied Nuclear Techniques in Geosciences, Sichuan, Chengdu 610059, China; 3 Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China; 4 Geological Survery Institute, Chengdu University of Technology, Sichuan Province, Chengdu 610059, China |