日土县地面磁测磁异常找矿地质效果分析

The Analysis of Prospecting Surface Magnetic Geological Effects in Rutog County

在日土县埃永错等四个1∶50 000标准图幅,开展了地质、物探(1∶50 000高精度磁测)、水系沉积物测量等综合地质矿产调查。在其中的埃永错幅工作区,发现两处较大的磁异常,其中的木乃嘎铁矿床磁异常强,经钻探验证找到了厚度达14 m多的单层磁铁矿体。使用中国地质调查局发展研究中心开发的RGIS2010重磁电数据处理软件进行了反演和剖面解释。钻探验证后,使用磁异常三维磁化率成像技术,反演磁铁矿体的垂向空间分布,提高了反演解释的精准度,获得了矿体分布的三维空间信息。

In Ayewing lake four 1∶ 50000 standard maps,Rutog county,Ali Prefecture,Tibet Autonomous Region,the geology and mineral resources survey is carried out in the aspect of geological,geophysical（1∶ 50000 precision magnetic survey）,stream sediment.Two large magnetic anomaly are founded in Ayewing lake site work area,which Munaiga iron deposit magnetic anomaly magnetic drilling to verify 14 m more than the thickness of a single layer of magnetite body found.RGIS2010 gravity and magnetic the electricity data processing software developed by Development and Research Center of CGS developed is used to inverse and section interpret.By using of magnetic anomalies in three-dimensional magnetic susceptibility imaging technology and the inversion of the vertical spatial distribution of the magnetite body,the accuracy of the inversion interpretation of the orebody distribution of three-dimensional spatial information are improved.