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| THE CONSISTENCY OF INTEGRATED GEOPHYSICAL AND GEOCHEMICAL ANOMALIES IN THE AJILE ORE DISTRICT OF INNER MONGOLIA AND ITS GEOLOGICAL SIGNIFICANCE |
| MA De-xi1,2, YANG Jin1, WANG Chun-sheng2, CHEN Xiao-qiang2, ZHANG Ting-yan2 |
1. China University of Geosciences, Beijing 100083, China;
2. Institute of Gold Geology, People's Armed Police, Langfang 065000, China |
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Abstract 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.
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Received: 10 July 2011
Published: 10 October 2012
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