高精度航磁资料在新疆西天山地区金属找矿中的应用

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q-可以发挥非常重要的作用，能有效指导地面矿产勘查。

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

Abstract:The mineral prospecting and exploration in the West Tian Shan 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,formsand intensities in conjunction with geological,mineral,geochemical and remote sensing data as well as the mineralization rules in this region. Then wechecked and confirmed these anomalies through surface investigations to find strongly magnetic magnetite deposits directly. Meanwhile,we tried to searchfor polymetallic ore deposits by delineating moderately-weakly magnetic and intermediate-acid intrusive rocks. Consequently we have found differentkinds of iron and copper deposits in the West Tian Shan area in these years. This fact indicates that the high-precision aeromagnetic data can play an important role in mineral prospecting in the West Tian Shan area.