新疆巴里坤望洋台一带1∶5万水系沉积物测量异常特征及找矿靶区优选  

Anomaly characteristics of 1∶50,000 stream sediment survey in Wangyangtai area of Balikun, Xinjiang, and the optimization of target areas

作　　者：李凯[1] 廖咏 黄凝[1] 陈红生[1] 袁晶[1] 刘小龙[1] LI Kai;LIAO Yong;HUANG Ning;CHEN Hong-Sheng;YUAN Jing;LIU Xiao-Long(Geological Survey Institute of Jiangxi Province,Nanchang 330030,China)

机构地区：[1]江西省地质调查研究院

出　　处：《物探与化探》2019年第6期1236-1245,共10页Geophysical and Geochemical Exploration

基　　金：新疆地质勘查基金项目(T15-1-LQ15)

摘　　要：新疆巴里坤望洋台一带发育晚古生代火山岩建造,NW、NWW向构造破碎带发育,孔雀石化、硅化等矿化蚀变强烈,具备寻找火山热液交代—充填型铜矿的找矿前景。为进一步指导区内铜矿找矿工作,通过对该地区开展1∶5万水系沉积物测量样品采集和测试成果数据资料综合处理,圈定了Au、Ag、Cu等16种单元素异常范围,依据各元素地球化学特征、元素相关性及在评价区的共生组合关系划分出亲铜亲铁、低温、亲硫、高场强、金元素组合五类。根据异常元素组合特征及结合成矿地质背景,圈定出14处综合异常,按其找矿意义大小对其进行了分类评序,对其中具有较大找矿意义的重要综合异常进行了评价与异常查证;依据异常查证结果、异常分布规律及成矿地质背景,优选出HS?5综合异常为最佳铜找矿靶区,为该区今后地质找矿工作提供了重要依据。The Late Palaeozoic volcanic rocks are well developed in Wangyangtai area of Balekkun,Xinjiang.NW?and NWW?trending tectonic fracture zones are extensively developed,and the mineralization and alteration of malachite and silicification are strong.In or?der to further guide the copper ore prospecting work in the area,the authors identified 16 single element anomalies such as Au,Ag,and Cu through the comprehensive processing of data obtained from the collection and test of samples from 1∶50,000 stream sediments in this area.According to the geochemical characteristics of various elements,the correlation of elements and the associated combina?tion relationship in the evaluation area,the authors divided the elements into five types,i.e.,chacophile?siderophile elements,low?temperature elements,sulfophile elements,high field strength elements and gold elements.According to the combination of abnormal elements and in combination with the geological background of metallogenesis,14 comprehensive anomalies were identified,classified and ranked on the basis of the magnitude of their prospecting significance,and the important comprehensive anomalies with greater prospecting significance were evaluated and verified.Based on the results of anomaly verification,the rule of abnormal distribution and the geological background of mineralization,the HS?5 comprehensive anomaly was selected as the best copper prospecting target area,which provides an important basis for the geological prospecting work in the area in the future.

关 键 词：水系沉积物测量 异常特征 找矿靶区 铜金矿 新疆 

分 类 号：P632[天文地球—地质矿产勘探]