高精度航磁资料在新疆西天山地区金属找矿中的应用  

Application of High-Precision Aeromagnetic Data to Mineral Prospecting in the West Tian Shan Area,Xinjiang

作　　者：余学中[1,2] 郑广如[2] 薛春纪[1] 丛丽娟[2] 张玄杰[2] 

机构地区：[1]地质过程与矿产资源国家重点实验室中国地质大学地球科学与资源学院,北京100083 [2]中国国土资源航空物探遥感中心,北京100083

出　　处：《地质与勘探》2011年第6期1142-1152,共11页Geology and Exploration

基　　金：中国地质调查局项目(编号:1212010916079)资助

摘　　要：新疆西天山地区海拔高,地形切割大,开展地面矿产普查工作难度很大。充分利用高精度航磁资料,以区域成矿规律为基础,结合地质、矿产、化探、遥感等资料,研究不同规模、形态和强度的磁异常,通过地面查证,可以直接发现强磁性磁铁矿体,同时通过发现和圈定中弱磁性的中酸性岩体进而找到与之密切相关的多金属矿产。利用上述找矿思路,在西天山地区取得了很好的找矿效果,发现了铁、铜、金等不同种类金属矿产。因此高精度航磁资料在该地区找矿过程中可以发挥非常重要的作用,能有效指导地面矿产勘查。The mineral prospecting and exploration in the West Tian Shah area of Xinjiang is very difficult due to its high elevation and strong relief, This work attempted to make full use of high-precision aeromagnetic data to solve this problem. We studied magnetic anomalies of different scales,forms and intensities in conjunction with geological, mineral, geochemical and remote sensing data as well as the mineralization rules in this region. Then we checked and confirmed these anomalies through surface investigations to find strongly magnetic magnetite deposits directly. Meanwhile,we tried to search for polymetallic ore deposits by delineating moderately-weakly magnetic and intermediate-aeid intrusive rocks. Consequently we have found dift^rent kinds of iron and copper deposits in the West Tian Shan area in these years. This fact indicates that the high-precision aeromagnetie data can play an important role in mineral prospecting in the West Tian Shan area.

关 键 词：高精度航磁 地面查证 磁铁矿 多金属矿 新疆西天山 

分 类 号：P631.2[天文地球—地质矿产勘探]