东昆仑东西大滩成矿规律及靶区预测

通过对东西大滩成矿远景区地层、岩浆岩、构造以及区域地球化学异常特征的分析,总结出该区的成矿规律,并对其成矿预测进行详细的分析。采用传统统计方法在本区内圈出Au、As、Sb等多处单元素异常,进而圈出4处综合异常。初步认为,该区主要赋矿层位为下三叠统巴颜喀拉山群,北西西向韧脆性断裂构造带及层间滑动控制着矿体展布,矿床类型主要有构造蚀变岩型锑金矿床和石英脉型锑金铜矿床,矿石矿物以低温金属矿物为主,区域地球化学表现为从西向东变异的独到特点,Au、Sb、As组合异常套合好、异常强度高的地段为有利找矿地段。最终圈出5个找矿靶区,在今后的找矿工作中具有重要的指示意义。

Mineralization Regularity and Target Prediction in Dongxidatan in East Kunlun Mountain

The strata,magmatic rocks,structure in Dongxidatan metallogenic prospective area and the regional geochemical anomaly characteristics are analyzed,the metallogenic regularity is summarized and the metallogenic prediction results are analyzed in detail.The traditional statistical methods are adopted to ring out single element anomalies such as Au,As,Sb,etc.,then,four integrated anomalies are delineated out.It is preliminarily considered that the lower triassic Bayankala group is the main ore-forming strata,and the ore-body distribution is controlled by the NWW brittle faults and interlayer sliding.Mineral deposits are mainly Sb-Au deposit of tectonic altered rock type and Sb-Au-Cu deposits of quartz vein type.Ore minerals are mainly the low temperature metallic minerals.The regional geochemistry shows that it has an unique characteristics of variation from west to east.The Au,Sb,As anomalies have a good overlap and the high intensity of anomalies area are favorable for ore prospecting.Five prospecting target areas are delineated finally,which has a most indicating significance for ore prospecting in the future.