兰坪盆地深源流体成矿的地质-地球化学信息  

GEOLOGICAL AND GEOCHEMICAL INFORMATION OF DEEP ORE FLUID IN LANPING BASIN,YUNNAN PROVINCE

作　　者：滕彦国[1] 刘家铎[1] 张成江[1] 倪师军[1] 彭秀红[1] 

机构地区：[1]成都理工学院,四川成都610059

出　　处：《地质找矿论丛》2000年第4期314-319,共6页Contributions to Geology and Mineral Resources Research

基　　金：国家攀登项目!(95 -预 - 39- 0 3- 0 3);国家自然科学基金项目!(4 98730 2 0 );教育部跨世纪优秀人才基金

摘　　要：兰坪盆地两侧的金沙江—红河大断裂、澜沧江大断裂以及盆地中轴深大断裂是该区深源流体活动主要通道 ,并成为该区深源流体成矿的重要控制因素。通过贯穿兰坪盆地及两侧造山带剖面上不同部位方解石脉微量元素地球化学研究 ,讨论了盆地内外成矿流体活动的差异 ,并结合前人已有的研究成果 ,认为兰坪盆地及其两侧矿床的成矿物质均与深部流体活动有关。同时 ,不同蚀变过程 (热接触交代变质与热液蚀变 )中 REE地球化学变化行为相似 ,反映了构造岩浆活动与该区成矿作用具有密切的关系。Recently researches show that most giant super giant metal deposits are related to deep geological movement,and at the same time,tectonomagmatic activities and mantle fluid control mineralization.Lanping basin is located between Lancangjiang fault and Jinshajiang Honghe fault.The two faults and longitudinal axial fault in the central basin is the main channel for deep fluid,so they are important tectonic information about deep fluid mineralization.We discuss the difference of fluid movement between inside and outside of the abasin.Geochemistry study of trace element in calcite from Lanping basin and its neighbors and the previous studies,show that ore forming material of the most deposits may come from deep fluid.

关 键 词：地球化学 深源流体 流体成矿 兰坪盆地 微量元素 

分 类 号：P611[天文地球—矿床学] P59[天文地球—地质学]