摘要
基于笔者近几年对东昆仑祁漫塔格地区的野外调查和室内岩矿测试分析研究,综合论述了祁漫塔格成矿带的成矿地质背景、多金属矿床的主要类型、基本特征、时空分布和成矿作用特点。该区金属成矿元素组合复杂,矿床类型多样,矿种以F e、Cu、Pb、Zn、M o、W、Sn、A u为主,矿床类型主要有矽卡岩型、斑岩型、沉积-改造型和高温热液型等。探讨了祁漫塔格地区多金属矿床的成岩成矿时代、成矿物质和成矿流体来源,以及成矿地球动力学背景。提出中—晚三叠世和早古生代晚期是本区重要的成矿时期;形成于中—晚三叠世的斑岩型和矽卡岩型矿床金属成矿物质主要来源于岩浆和含碳酸盐岩地层,成矿流体主要来源于岩浆水,两者系同一构造岩浆活动在不同阶段、不同深度和不同部位发生成矿作用的产物。
Based on some fieldwork and geochemical analyses in recent years,the metallogenic setting,major types,basic geological characteristics,time-space distribution and metallogeneses of polymetallic deposits（occurrences） in the Qimantage metallogenic belt,Eastern Kunlun area are described briefly in this paper.The ore-forming elements are comprehensive and dominated by Fe,Cu, Pb,Zn,Mo,W,Sn and Au.Several various styles of polymetallic mineralization in the Qimantage metallogenic belt have been recognized and Clasified into the skarn-type deposit,porphyry deposit,hydrothermal superimposed strata-bound deposit and hypothermal deposit.Two important mineralization ages of both Middle-Late Triassic and early Paleozoic for polymetallic deposits are determined in the belt.For Middle to Late Triassic porphyry and skarn-type deposits,the ore-forming materials were mainly derived from magmatic and carbonate-bearing strata,and ore-forming fluids came chiefly from magmatic fluids;and both of them belong to products of the same tectonomagmatic cycle of Triassic period,although they formed in different stage,different depth and different place.
出处
《西北地质》
CAS
CSCD
2010年第4期10-17,共8页
Northwestern Geology
基金
国土资源部"百人计划"项目
中央级公益性科研院所基本科研业务费专项资金项目(编号:K0901)
中国博士后科学基金项目(编号:20090460132)
"十一五"国家科技支撑计划课题(编号:2006BAB01A06)
中国地质调查局地质调查项目(编号:1212010012004)资助
关键词
多金属矿床
时空分布
成矿作用
地球动力学背景
祁漫塔格
东昆仑
poly-metallic deposits
time-space distribution
metallogeneses
tectonic setting
Qimantage
Eastern Kunlun
