论华南地区中生代3次大规模成矿作用  

Three major metallogenic events in Mesozoic in South China

作　　者：华仁民[1] 陈培荣[1] 张文兰[1] 陆建军[1] 

机构地区：[1]成矿作用研究国家重点实验室,南京大学地球科学系,江苏南京210093

出　　处：《矿床地质》2005年第2期99-107,共9页Mineral Deposits

基　　金：国家重点基础研究发展规划项目 (1999CB40 3 2 0 9);国家自然科学基金重点项目 (4 0 13 2 0 10 )的资助

摘　　要：文章在总结大量前人资料的基础上,提出华南地区中生代发生了3次大规模成矿作用,且都在燕山期。其中,第一次发生在燕山早期的180～170Ma,以赣东北和湘东南的Cu、Pb_Zn、(Au)矿化为代表。第二次发生在燕山中期的第二阶段(约15 0～139Ma) ,主要是南岭及相邻地区以W、Sn、Nb_Ta等有色_稀有金属矿化为主的成矿作用。第三次是发生在燕山晚期12 5～98Ma的以南岭地区Sn、U矿化和东南沿海地带的Au_Cu_Pb_Zn_Ag矿化为代表的成矿作用。华南地区中生代这3次大规模的成矿作用是该地区岩石圈发展演化的产物,它们与拉张的动力学背景、壳_幔相互作用、深部热和流体的参与有着成因上的密切关系。In Mesozoic, large-scale metallogeny took place in South China, which was called 'Mesozoic metallogenic explosion'. Based on detailed investigation, the authors have recognized three major large-scale metallogenic events in Mesozoic. All these events occurred in Yanshanian period, which has been considered as the post-orogenic period of the Indosinian Orogenesis. The first large-scale metallogeny took place from 180 Ma to 170 Ma, represented by Cu, Pb-Zn,(Au)mineralization in northeastern Jiangxi and southeastern Hunan. The second one was mainly mineralization of rare metals such as W, Sn, Nb-Ta closely related to crust-remelting type granitoids during 150～139 Ma. The following 125～98 Ma was the time for the third, and perhaps the strongest large-scale metallogeny, which included Sn-U mineralization in Nanling Range region and Au-Cu-Pb-Zn-Ag mineralization in the Southeast Coastal zone. The three major metallogenic events resulted from lithospheric evolution of South China and had close genetic relation with extensional geodynamic background, crust-mantle interaction, and participation of deep-source heat and fluids.

关 键 词：地质学 中生代 燕山期 大规模成矿作用 岩石圈演化 华南 综述 

分 类 号：P611[天文地球—矿床学]