盐山—康保大地电磁剖面特征及成矿作用

Profile Characteristics of Magnetotelluric and Its Mineralization Influence in Yanshan-Kangbao

随着勘探方法的不断发展与进步,浅部矿产资源勘查工作基本全覆盖,目前趋于向深部地区找矿。多年来人们对深部构造与成矿的关系进行了大量的研究,认为深部构造分区特征控制了矿产分布。通过盐山-康保取得的MT剖面资料,经过数据的预处理、定性分析、反演得到MT二维反演剖面,并分析了剖面的电性结构特征。结合区域地质资料,得到了盐山-康保剖面的深部构造特征,且在研究区内发现了几个地幔柱,部分地幔柱与已发现的矿床有很好的对应关系,充分说明了这些地幔柱是矿产资源的深部来源,从而进一步探讨了剖面电性特征与深部矿产资源的关系,为下一步深部找矿提供了依据。

With the development and progress of exploration methods,the basic exploration of shallow mineral resources has been completed and the current situation is to prospect mineral in deep area.Over the years,people do a lot of researches on the relationship between the deep structures and the ore-forming and think that deep structural features control the distribution of mineral.In this paper,through MT profile data from Yanshan-Kangbao,the inversion section of MT 2Dis gotten by data preprocessing,qualitative analysis and inversion and the electrical structure characteristics are analyzed.It gets the deep tectonic characteristics of Yanshan-Kangbao profile with the combination of geological data and it finds several mantle plumes in the area,part of which has a good corresponding relation with the discovered deposit.All of these illustrate fully that the mantle plumes are the deep source of mineral resources and then the relationship between electrical characteristic section and deep mineral resources is further discussed,which provides the basis for the next step of deep prospecting.