藏东三江构造带云南段α石英热活化ESR定年与新生代构造事件  

Heat-activated ESR dating of α quartz and Cenozoic tectonic events in the Yunnan segment of the Sanjiang tectonic zone, eastern Tibet

作　　者：钟康惠[1] 梁兴中[2] 刘肇昌[2] 舒良树[1] 李凡友[2] 施央申[1] 唐菊兴[2] 

机构地区：[1]南京大学地球科学系,江苏南京210093 [2]成都理工大学地球科学学院,四川成都610059

出　　处：《地质通报》2004年第12期1231-1237,共7页Geological Bulletin of China

基　　金：国家"973"2002CB412607项目;国家计委96-914-01-03项目;原中国有色总公司地质总局97-S-1项目资助。

摘　　要：运用α石英热活化ESR定年法(HAESRDQ)对三江构造带云南段49件样品定年结果的分析发现,该方法所获测年数据与地质事实及其他测年方法定年结果吻合,表明是一种普遍适用于中—新生代地质事件定年的方法。同时,证实三江构造带云南段是新生代陆内褶皱造山带,大量具“层控”特征的有色贵金属矿床的成矿时代也是新生代。By using heat-activated ESR dating of α quartz (HAESRDQ), 49 samples from the Yunnan segment of the Sanjiang tectonic zone were analyzed. The data obtained by this method coincide with those obtained by using other dating methods and geological facts, indicating that this method is a universal dating method for dating Mesozoic to Cenozoic geological events. At the same time, it is confirmed that the Yunnan segment of the Sanjiang tectonic zone is a Cenozoic intracontinental orogenic belt, and Cenozoic is the metallogenetic epoch of large numbers of non-ferrous and noble metal deposits that have stratabound characteristics.

关 键 词：α石英热活化ESR定年法(HAESRDQ) 中—新生代地质事件定年 三江构造带云南段 

分 类 号：P533[天文地球—古生物学与地层学] P546[天文地球—地质学]