综合物探方法在青海省跃进山铁矿勘查中的应用  

The application of comprehensive geophysical prospecting method to the exploration of the Yuejinshan iron deposit in Qinghai

作　　者：李玉录 邢利娟 拜占红 刘志华 王震 LI Yu-Lu;XING Li-Juan;BAI Zhan-Hong;LIU Zhi-Hua;WANG Zhen(The First Geological and Mineral Prospecting Institute of Qinghai Province,Haidong 810600,China)

机构地区：[1]青海省第一地质矿产勘查院,青海海东810600

出　　处：《物探与化探》2018年第5期889-895,共7页Geophysical and Geochemical Exploration

基　　金：青海省地质勘查基金项目"青海省都兰县跃进山铁矿普查"

摘　　要：以跃进山铁矿为研究对象,利用地面高精度磁测和可控源音频大地电磁法两种方法的联合勘查,达到了最终的勘查目的。本区的地质、物探实际勘查工作表明,针对地形困难和地质特殊的测区,选择适合指导本区地质找矿的物探工作方法至关重要,它直接影响到最终的勘查效果。实践证明,在本区综合运用地面高精度磁测和可控源音频大地电磁测深取得了良好的地质找矿效果。通过深入研究综合物探异常,结合研究区地质特征对矿床的找矿前景做出了综合评价,建立了矿区的地质—地球物理找矿模型,可为成因类型相似或相同地区找矿提供借鉴意义。In this paper,the authors utilized the high-precision ground magnetic survey and Controlled Source Audio Frequency Magnetotelluric（ CSAMT） technique to study the Yuejinshan iron deposit in Qinghai Province. The integrated geological and geophysical survey in this area shows that it is vital to design appropriate strategies and adopt suitable methods for ore explorations in areas of complex topography and geological setting. The choice of strategies and methods has a direct and significant influence on the final survey results.The studies also indicate that a combination of high-precision ground magnetic survey and CSAMT technique can produce highly reliable survey results for this area. The authors made an integrated evaluation for the mine exploration prospect in Yuejinshan area based on an analysis of local geological settings and geophysical anomalies. The geological-geophysical prospecting model developed in this study can serve as a valuable prototype for mine exploration in areas with similar geological evolution settings.

关 键 词：跃进山磁铁矿 综合物探方法 磁化率 3维反演 找矿模型 

分 类 号：P631[天文地球—地质矿产勘探]