内蒙古阿吉勒矿区综合物化探异常一致性及地质意义探讨

在内蒙古阿吉勒矿区，通过面积性剖面测量，X荧光仪测量的Mn、Cu、Pb、Zn多元素峰值异常反映出矿（化）体的出露位置，高密度电法异常反映出矿化分布在构造裂隙及岩体接触带部位，EH4电法异常反映I号矿化蚀变破碎带深部为一近东西向的低阻构造带，北倾，延深上千米。结合钻探结果综合分析后认为，铅锌矿体宏观上受低阻构造带控制，主要赋存在构造带与围岩接触带、构造带中不同深度岩石裂隙以及不同岩性岩石接触面附近，在不同深度分层分段产出。

THE CONSISTENCY OF INTEGRATED GEOPHYSICAL AND GEOCHEMICAL ANOMALIES IN THE AJILE ORE DISTRICT OF INNER MONGOLIA AND ITS GEOLOGICAL SIGNIFICANCE

The recently-discovered Ajile Ag,Cu,Pb,Zn polymetallic ore district has favorable ore-forming potential and ore-search prospect;nevertheless,the thick overburden and rare outcrops have restricted its exploration and development.Therefore,the authors employed X fluorescence method,high-density method,EH4 electrical method and soil and rock integrated geophysical-geochemical survey to the ore-prospecting work.Through areal profile survey and X fluorescence measurement,the Mn,Cu,Pb,Zn multi-element peak value anomalies can reflect surface exposed positions of ore(mineralized) bodies;the high-density electrical anomalies show that the mineralization is distributed in positions of structural fissures and rock body contact zones;The EH4 electrical anomalies reveal that the depth of No.I mineralization and shatter zone is a nearly EW-trending low-resistivity structural zone,which dips northward and extends some one thousand meters.An integrated analysis in combination with drilling result shows that lead-zinc ore bodies are mainly controlled by the low-resistivity structural zone and produced along the contact zone between the structural zone and the wall rock,the rock fissures at different depths of the structural zone and the contact surface between rocks of different lithologic characters,occurring in layers and segments at different depths.