西昆仑西段布伦口-赞坎一带铁矿成矿系列  

The Metallogenic Series of Iron Deposits in Bulunkou-Zankan,West Kunlun

作　　者：任广利[1] 李健强[1] 王核[2] 刘建平[3] 高婷[1] 杨敏[1] 易欢[1] 韩海辉[1] 杨军录[1] 

机构地区：[1]西安地质矿产研究所,陕西西安710054 [2]中国科学院广州地球化学研究所,广东广州510640 [3]中南大学有色金属成矿预测教育部重点实验室、地球科学与信息物理学院,湖南长沙410083

出　　处：《新疆地质》2013年第4期318-323,共6页Xinjiang Geology

基　　金：西昆仑成矿带矿产资源遥感地质调查(基[2011]02-20-01);国家十二五科技支撑项目(2011BAB06B05-01)联合资助

摘　　要：西昆仑西段布伦口-赞坎一带相继发现多个铁矿床,形成一条呈带状间断分布的铁矿带。对比该成矿带不同类型铁矿床地质特征、赋矿地层及构造背景,结合铁矿体赋矿围岩成岩、成矿时代精确定年数据,认为布伦口-赞坎一带磁铁矿型铁矿床和菱铁矿型铁矿床形成时代为早古生代,二者时空上具较好相关性。该带经原始沉积期、区域变质改造期和热液叠加改造期3个阶段,属早古生代海相沉积变质型铁矿成矿系列,具有相近的矿床成因和成矿演化史,受成矿环境和控矿条件控制,形成不同类型铁矿床。With the propulsion of the geological survey and mineral exploration in west Kunlun metallogenic belt, many iron deposits have been discovered successively in Bulunkou-Zankan regions and distributed in belts. Basing on the theories of metallogenic series of iron deposits and comparing the geological characteristics, host strata, tectonic set- ting and the precision ratings of diagenetic age in the study areas, it concluded that the magnetite deposits and siderite deposits in Bulunkou-Zankan were formed in early Paleozoic and both of them showed good correlations in time-space distributions. The iron deposits were formed through the original sedimentary stage, regional metamorphism- transforma- tion stage and hydrothermal reformation stage. They were belonged to the marine sedimentary-metamorphic metallogen- ic series, which have similar deposit genesis and evolution history of mineralization, and the differences of the sedimen- tary environment and ore-controlling conditions reduced the different ore types.

关 键 词：西昆仑 铁矿床 成矿系列 海相沉积变质型铁矿 

分 类 号：P618.31[天文地球—矿床学]