深部金属矿产资源地球物理勘查与应用

随着找矿勘探工作程度的不断深入,许多露天的和近地表的金属矿产资源已基本上被查明,在地表浅部(第一深度空间:0~500 m深度)找到大型或超大型金属矿床的难度将必越来越大,而金属矿产资源的短缺已在日益加剧.为了缓解当今的资源危机,必须进行深部找矿勘探(第二深度空间:500~2000 m深度).这是因为在地壳深部具有良好的成矿环境和找矿潜力,地球物理勘探技术的发展与成效已使得深部找矿成为可能.本文通过分析和讨论国内外典型金属矿产资源找矿过程的实践表明:地球物理勘探方法发挥着重要作用,因为它具有大探测深度、高精度和高分辨率的特点,可为深部金属矿勘查提供有效信息,是第二深度空间找矿勘探的有力手段.近年来,国内外的实践表明,深部矿产资源的地球物理勘探取得了尚在不断取得重要成效.

Geophysical exploration and application of deep metallic ore resources

With strengthening of geological and mineral exploration,a great deal of strip mines and near surface mine hare been be found out.It is more and more difficult to find great metallic ore deposits in shallow subsurface(first deep space:0~500m depth).On the other hand,the shortage of metallic ore resources becomes more and more serious.In order to decrease this crisis of resources,deep metallic ore exploration(second deep space:500~2000m depth) must be carried out as soon as possible.There are good metallogenic conditions in deep subsurface and the development of geophysical techniques makes deep mineral exploration become feasible.In this paper,we make analyses and discussion of the important role of geophysics in deep ore exploration on representative deep ore deposits in abroad and China.The geophysical methods can probe great depths with high precision so can provide effective information on deep ore depositions.In recent years,many practices all over the world indicate that geophysical exploration of deep mineral resources hare obtained and are obtaining important results.