塔吉克斯坦上库马尔克金矿床地质-地球物理特征及找矿方向  

Geological-geophysical characteristics and ore prospecting direction in Tadjkistan Shangkumaerke gold deposit

作　　者：李久明[1,2] 周可法[1] 袁新民[2] 杨寅静[2] 吴艳爽[1] 刘璇[2] 

机构地区：[1]中国科学院新疆生态与地理研究所,乌鲁木齐830011 [2]特变电工股份有限公司,新疆昌吉831100

出　　处：《地质找矿论丛》2016年第3期425-433,共9页Contributions to Geology and Mineral Resources Research

基　　金：国家自然科学基金项目"基于高精度成像高光谱的矿物蚀变信息识别新方法研究"(编号:U1129302)资助

摘　　要：中塔吉克斯坦贵金属矿床大多与古生代浅变质沉积岩系关系密切,矿化富集多产于不同岩性层间的裂隙、滑动带及破碎带等部位,具有较明显的层控特征。上库马尔克金矿床位于中塔吉克斯坦贵金属成矿带中,从矿床成矿控矿地质条件和地球物理特征来看,金矿体与花岗质脉岩紧密伴生,矿床成因与晚古生代黑色岩系沉积变形、变质及热液萃取改造作用有关,含碳浅变质碎屑岩带尤其是碳质-黏土片岩层的金含量相对较高,属于含碳浅变质碎屑岩型金矿床。矿床激电异常特征显示,高极化率、相对低电阻的物探异常是金矿化蚀变带的反映,该套组合异常往往是矿区寻找金矿或相关地质体的重要地球物理标志。In the middle Tadjkistan noble metal ore deposits are mostly related to the Palaeozoic shallow metamorphic sedimentary rock series and mineralization generally occur in fractures, slip and cataclastic zones between different lithologic layers thus are characteristic of stratabound. Shangkumaerke gold de- posit is located in the middle Tadjkistan noble metal ore belt. Its metallogenic and ore-control conditions and geophysical characteristics show that ore bodies are closely related to granitic dykes and the gold de- posit is genetically related to sedimentation deformation, metamorphism and hydrothermal fluid rework and extraction and the deposit is a one C-bearing shallow metamorphic clastic rock-hosted gold deposit. Au content is higher in C-bearing shallow clastyic rock, especially in the carbonaceous-argillaceous slate. IP anomly of the deposit show that the mineralization-alteration zones are characterized by high polariza- tion-relative tow resistance anomly. In general the anomly is geophysical mark for gold ore body and related geological bodies.

关 键 词：上库马尔克金矿床 地质-地球物理特征 找矿方向 塔吉克斯坦 

分 类 号：P631[天文地球—地质矿产勘探] P618.51[天文地球—地质学]