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| THE EFFECTS OF APPLYING INTEGRATED GEOPHYSICAL AND GEOCHEMICAL TECHNIQUES TO ORE-PROSPECTING WORK IN A CERTAIN POLYMETALLIC ORE DISTRICT IN QINGHAI |
| LIU Jian-xin1,2, CAO Chuang-hua1,2, TONG Xiao-zhong1,2, GUO Rong-wen1,2, DENG Xiao-kang1,2, GAN Jia-xiong3, LIU Wen-jie4 |
1. Institute of Info-physics and Geometrics Engineer, Central South University, Changsha 410083, China;
2. Key Laboratory of Non-ferrous Resources and Geological Detection, Changsha 410083, China;
3. Hunan Province Yueyang City Seismological Bureau, Yueyang 414000, China;
4. School of Civil Engineering, Central South University, Changsha 410075, China |
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Abstract On the basis of geological exploration information obtained in the Duolongqiarou exploration area of Qinghai Province and with the molybdenitized and chalcopyritized Indosinian and Yanshanisn granites as the main study objects, the authors conducted geochemical soil (debris) survey and geophysical dual-frequency IP sweeping, delineated three valuable metallogenic prospective areas, and then employed IP sounding and EH4 magnetotelluric sounding to preliminarily delineate two anomaly belts, which are mainly NNW-striking and SWW-dipping large-size anomaly belts. A geological-geophysical-geochemical metallogenic model was formulated for this ore district, and drill holes were deployed over the inferred anomaly positions, which intersected ore bodies. The results show that the combination of geophysical methods and geological mapping information and the integrated consideration of the geochemical anomalies can avoid anomalies resulting from carbon matter, which is of great significance for the exploration work in the west special landscape areas.
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Received: 10 March 2011
Published: 10 October 2012
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