高精度磁法测量在棒槌崖矽卡岩型磁铁矿勘查中的应用

通过棒槌崖地区开展高精度磁法测量,对磁测数据进行光滑、化极、频率域向上延拓处理,划分断层位置、圈定磁异常形态,总体查明了该区磁异常特征。依据磁异常特征,结合地质、物性资料,对异常进行定性和半定量正反演计算,完成了该区地质物探综合解释推断。通过对综合信息的比较分析,进行成矿靶区预测,并开展潜力评价。最终通过钻孔验证,找到了矽卡岩型磁铁矿体。本次实践应用充分说明高精度磁测在棒槌崖地区寻找矽卡岩型磁铁矿效果显著。

Application of high-precision magnetic measurement in Bangchuiya skarn magnetite exploration

By carrying out high-precision magnetic survey in Bangchuya area, the magnetic survey data were processed with smoothing, polarity reduction and upward extension in frequency domain, and the fault positions were divided and the magnetic anomaly forms were delineated, and the magnetic anomaly characteristics in this area were generally identi.ed. According to the characteristics of magnetic anomalies, combined with geological and physical property data, qualitative and semi-quantitative forward and inverse calculations are carried out to complete the comprehensive interpretation and inference of geological and geophysical exploration in this area. Based on the comparative analysis of comprehensive information, the metallogenic target area is predicted and the potential evaluation is carried out. Finally, the skarn type magnetite orebody was found through drilling veri.cation. It fully shows that the high precision magnetic survey is e.ective in searching skarn magnetite in Bangchuya area.