基于CSAMT反演的陕西略阳柳树坪金锌矿深部构造特征研究

Study on deep structural characteristics of Liushuping gold-zinc deposit in Lueyang,Shaanxi based on CSAMT inversion

前人地表地质调查表明,九道拐向斜是陕西略阳柳树坪金锌矿的主要控矿构造,灯影组中段是主要赋矿层位。为了查明柳树坪金锌矿深度1000m以内构造形态特征,尤其是九道拐向斜形态和赋矿层位延伸情况,本文基于150kw大功率可控源音频大地电磁测深二维反演,分析研究了深度1000m以内地层分布、向斜构造、断裂构造、岩体分布等,解译了九道拐向斜形态,为深部成矿理论研究与开发利用提供了地球物理依据。

Previous surface geological investigation in this area has indicated that the the Liushuping Au-Zinc deposit in Lueyang mainly occurs in the Jiudaoguai syncline and the middle portion of the Dengying Formation is the major orebearing horizon.In order to find out the structural features of Liushuping gold-zinc deposit within 1,000m depth,especially the form of Jiudaoguai syncline and the extension of ore-bearing horizon,two-dimensional inversion of magnetotelluric sounding with 150 kW high-power controllable source audio is used for research of the distribution of strata,syncline,fault and rock mass within 1,000m deep,interpretation of the form of Jiudaoguai syncline,proposing ore prospecting direction at depth and providing a geophysical basis for the research,development and utilization of deep metallogenic theory.