地面高精度磁法测量找寻金矿应用例析

An Example of Applying Ground High_Precision Magnetic Survey to the Prospecting for Gold Deposits in a Gold Reconnaissance Area of Jiaodong

利用地面 Ｈｃ － ９５ 氦（４ Ｈｅ） 光泵磁力仪，对胶东某金矿普查区进行了大比例尺、高精度磁法测量。在此基础上，着重阐释胶东西北部区域和普查区磁场结构及其地质意义，编制出普查区成矿构造地质图。同时，对比分析已知金矿床（ 体） 磁场特征，建立金矿地质－ 地球物理找矿模型，进行找矿预测。进而在重点区段实施初步工程验证，见矿率高，从而说明了地面高精度磁法测量找寻金矿的可行性和有效性。

Using the 4He optically pumped magnetometer of Hc_95,the authors made large_scale high_precision magnetic investigations in a certain reconnaissance area of Jiaodong,China.In this paper,the authors emphatically expounded the NW_trending structures of magnetic field in Jiaodong and the reconnaissance area.Based on this,they explained their geologic significance,drew up the structural_geological map of the reconnaissance area.The authors also compared and analysed the characteristics of the magnetic fields of the known ore deposits and ore_bodies,built up the geological_geophysical prospecting models for gold,and carried out the prospecting.Finally,the authors showed the feasibility and efficiency of high_precision ground magnetic prospecting for gold deposits.