论云南兰坪金顶超大型铅锌矿床的成因  

A Probe Into the Genesis of Jinding Super-large Lead-Zinc Ore Deposit

作　　者：王安建[1] 曹殿华[1] 高兰[1] 王高尚[1] 管烨[2] 修群业[1,3] 刘俊来[4] 

机构地区：[1]中国地质科学院矿产资源研究所,北京100037 [2]中国地质科学院地质研究所,北京100037 [3]核工业北京地质研究院,北京100029 [4]中国地质大学,北京100083

出　　处：《地质学报》2009年第1期43-54,共12页Acta Geologica Sinica

基　　金：国家科技支撑计划(编号2006BAB01A07);国家“973”项目(编号2002CB412607);中国地质调查局地质调查项目(编号121201066307)资助的成果

摘　　要：在前人大量工作和资料积累的基础上,从成矿构造地质背景、容矿系统、容矿岩石的归属与成因、成矿时代和成矿物质来源方面论述了云南兰坪金顶超大型铅锌矿的成因,指出金顶超大型铅锌矿床是新生代陆陆碰撞造山背景下,在晚始新世至渐新世(大约33Ma)区域挤压推覆转变为区域拉张伸展构造环境转换时期,幔源岩浆和热流驱动盆山转换前被封闭在裂谷或前陆盆地深部富含油气、膏盐和金属的流体,沿着造山带两组伸展构造交汇部位上升,在构造圈闭环境下,通过角砾岩侵位—流砂底辟—流体排泄—金属淀积的产物。The paper prefers to a new genesis model of the Jinding super-large lead-zinc ore deposit, which involved various factors, such as tectonic setting, metallogenic system, genesis of the host rock, metallogenetic epoch and source of ore-forming matter. The deposit was formed during the process of continental collision at Cenozoic. During transtition period from compressed nappe to regional extension in late Eocene to Oligocene （at about 33Ma）, fluids with abundant oil gas, salt and metals, sealed in rift or forelandbasin were drived by mantle magma and hot fluid before transition of basin and orogene; arose along the intersection of two groups of extensional structures in the orogence belt; deposited in the structure trap by emplacement of braccia, flowing sand diaper and fluid excretion.

关 键 词：伸展构造交汇 裂谷盆地流体 角砾岩侵位 流砂底辟 超大型铅锌矿 兰坪金顶 云南 

分 类 号：P618.4[天文地球—矿床学]