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| Geophysical-geochemical anomalies in Buhangte area of Inner Mongolia and their prospecting effects |
| GAO Si-Xin1, WU Hong-Wei2, ZHAO Qiang3, WANG Lu-Lin2, ZHANG Xue-Zhong2 |
1. Exploration & Development Bureau of Geology & Mineral Resources of Ningxia, Yinchuan 750021, China;
2. No. 3 Geological Survey Institute, Henan Bureau of Geo-exploration and Mineral Development, Xinyang 464000, China;
3. Ningxia Institute of Geological Survey, Yinchuan 750021, China |
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Abstract Along the third grade Cu-Mo-Pb-Zn-Ag-Au-Ni-Cr-Co metallogenic belt in Dong Ujimqin Banner-northern Da Hinggan Mountains region of Inner Mongolia, 1：50, 000 soil survey has revealed that there exist Ag, Pb and Zn mesothermal-epithermal element anomalies which are distributed in the semi-ring form around high-temperature elements Sn, W and Mo. The anomalies have high intensity and obvious compositional zoning. The 1：10, 000 soil anomalies delineated by anomaly verification are distributed similar to the above anomalies, but with higher intensity; the concentration centers of Pb, Zn and Ag anomalies indicate the locations of the shallowly-covered Pb-Zn orebodies. The low-resistivity and high-polarizability circular planar anomalies corresponding to the soil anomalies indicate the existence of polarized bodies. It is inferred that there exists a concealed granite-porphyry body in the depth, and this rock body as well as the depth of its endo-and exo-contact zones has fairly promising prospecting potential. Guided by the porphyry metallogenic theory, the authors further found a number of shallowly-covered lead-zinc orebodies, concealed silver orebodies and molybdenum orebodies, and summarized the geological, geophysical and geochemical indicators in search for ore deposits.
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Received: 28 June 2013
Published: 10 August 2014
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