金矿测年方法讨论及定年中存在的问题  

METHOD OF DATING OF GOLD DEPOSIT AND THE RELATED PROBLEMS

作　　者：魏俊浩[1,2] 刘丛强[1] 刘国春[3] 

机构地区：[1]中国科学院地球化学研究所 [2]中国地质大学资源学院,湖北武汉430074 [3]红花沟金矿

出　　处：《地学前缘》2003年第2期319-326,共8页Earth Science Frontiers

基　　金：国家"九五"攀登计划预选项目 ( 95预 3 9) ;杰出青年基金项目 ( 0 4962 5 3 0 4)

摘　　要：准确的成岩成矿年代测定是矿床研究和对比的基础。然而近几年来 ,不同的研究者对同一矿床采用不同的定年方法得出了相差十分悬殊的成岩成矿年龄的报道屡见不鲜。为此笔者在分析了不同定年方法适用性的同时 ,强调了在金矿定年中要加强对金矿成岩成矿地质背景的研究 ,重视不同地质体与成矿的先后关系 ,确定标志性地质体 ,选择合适的定年方法 ,测定标志性地质体和矿体的成岩成矿年代 ,使成岩成矿年代互为限定 ,得到高质量的年代学数据。Accurate dating of diagenesis and metallogency is the base for deposit research and contrast. However, in recent years, the reports of great disparity ages of diagenesis and metallogency for the same gold deposit by different researchers and by using different dating methods are very common. For this reason, based on the suitable analysis for distinct dating methods, the authors emphasize that in the dating of gold deposit one should strengthen the study of geological setting of gold mineralization, pay attention to the time sequence relation of different geological bodies to metallogency, define the marked geological body, select suitable dating methods, measure the ages of marked geological body and ore body, and confine each other within certain limit for diagenesis and metallogency ages, in order to obtain high quality chronological data.

关 键 词：成矿年代 金矿床 定年方法 成矿地质 标志性地质体 成岩年代 地质年代学 

分 类 号：P618.51[天文地球—矿床学] P597.3[天文地球—地质学]