庐枞矿集区中东部七家山——马口地区深部找矿潜力分析

Analysis on deep mineral prospecting potential of Qijiashan-Makou area in central and eastern Luzong ore-concentrated area

为调查庐枞矿集区中东部七家山—马口地区深部矿产资源潜力,利用小波变换方法提取深源重磁场,通过对垂向一阶导数Z与水平方向导数模S进行参数变换,突出深源重磁场的局部异常;结合频谱激电(spectrum induced polarization,SIP)、可控源音频大地电磁测深(controlled source audio-frequency magneto tellurics,CSAMT)成果,在调查区深部查明了一条长大于3. 0 km、宽大于0. 5 km的高重低磁、低阻高极化异常带;根据调查区内外已知铜矿(化)体分布规律,结合已知矿(化)体在深源重磁异常中的分布及钻孔(zk4601)钻探验证结果,认为上述异常带是铜多金属矿化蚀变带的反映,是寻找铜多金属矿的有利部位,具有较好的找矿前景。

In order to investigate the deep mineral prospecting potential of Qijiashan-Makou area in central and eastern Luzong ore-concentrated area, the authors extracted the deep gravity and magnetic fields with the wavelet transformation method, and emphasized the local anomalies of deep gravity and magnetic fields through parametric transformation of vertical first-order derivative Z and horizontal derivative modulus S . Combin with the results of spectrum induced polarization （SIP） and controlled source audio-frequency magneto tellurics （CSAMT）, the authors found out a high gravity and low magnetic, low resistivity and high polarization anomaly belt in the deep of the research area, which is longer than 3.0 km and wider than 0.5 km. According to the distribution law of the known copper ore （mineralized） bodies inside and outside the research area, combin with the distribution of known ore （mineralized） bodies in the deep gravity and magnetic anomalies and the verification results of zk4601 drilling, the authors considered that the anomaly belt is the reflection of copper polymetallic mineralized alteration zone and a favorable part of copper polymetallic prospecting, which has a good prospecting perspective.