CSAMT在隐伏金属矿勘查中的应用研究

以江-绍拼合带四都高塘隐伏多金属找矿区的地质与地球物理特征为基础,通过采用CSAMT法实地勘查和数据的预处理及反演等研究,较好地给出了低阻异常带及断层的位置,其特征是卡尼亚电阻率拟断面图为低阻区,而在相位断面图上表现出视相位较高,并且在断层处其较低频率的相位值具有横向突变的特征。该研究解释的地质成果不仅得到了钻孔验证,而且得到了具有工业价值的铜矿体。该研究所给出的数据处理方法和有关参数对在该区寻找地下隐伏矿体具有较大的实用价值。

Study of Controlled Source Audio Magnetotellurics Method in Exploration of Buried Deposits

The CSAMT method has been used to explore buried copper de posit,Jiang-Shao fault zone.Based on the study of the geological and geophysi cs conditions of the area,CSAMT data were pre-processed and inversed.The posit ion of anomaly body and fault can be well described with the pseudo plan of Cagn iard resistivity and phase.During low resistivity of Cagniard resistivity,ther e is a higher phase character on the sectional plan of phase.However,phase val ue shows sharp change at the fault zone.It provides reliable basic data for the processing and interpretation of the electric prospecting data.