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本文利用CSAMT方法对相山石洞地区进行了深部地质结构探测.并尝试借助于先进的专业软件平台Oasis montaj对研究区已有的重磁数据生成3D重磁地球物理模型,从重磁模型中切取与实测CSAMT剖面大小、位置一致的密度切片和磁化率切片.将实测CSAMT剖面与密度切片和磁化率切片共同应用于解译石洞地区的深部地质结构.研究结果表明:CSAMT法较清晰的划分出了该地区的主要岩层的组间界面,刻画出了岩性界面的起伏形态,且与重磁资料共同识别出了3条已知断裂以及推测出了1条隐伏断裂;通过充分利用已有的重磁数据,不仅可以为CSAMT的地质解译提供依据,还可以提高地球物理数据的利用率降低地质工作的勘探成本.
In this paper, CSAMT method is used to detect the deep geological structure in the Xiangshan area.And we try to generate the 3D gravity-magnetic geophysical model based on the existing gravity and magnetic data of the study area by means of the advanced professional software platform Oasis montaj, The CSAMT profile was measured and the magnetic susceptibility slice was obtained.The measured CSAMT profile, density slice and magnetic susceptibility slice were used to interpret the deep geological structure in Shidong area.The results show that the CSAMT method is more clearly divided The inter-group interface of the main rock strata in this area depicts the undulating morphology of the lithologic interface, together with the gravity and magnetic data, three known faults and one hidden fault are inferred. By making full use of the existing Gravity and magnetic data not only provide the basis for CSAMT geological interpretation, but also improve the utilization of geophysical data and reduce the exploration cost of geological work.