作者单位:SU Yongjun,ZHAO Geng xin(Tianjin Institute of Geology and Mineral Resources; China Geological Survey, 8th Road. Dazhigu, Tianjin, China, 300170)CHENG Li zhen(Université du Québec en Abitibi-Témisamingue, 445 boul. de l'Université, Rouyn-Noranda, Quebec, Canada, J9X SE4)Michel CHOUTEAU((E)cole polytechnique de Montreal, P.O.Box 6079, Centre-Ville Station, Montreal, Quebec, Canada, H3C 3A7)WANG Xu ben(Chengdu University of Technology, Chengdu, P.R.China, Chenghua District, 610059)