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| THE APPLICATION EFFECT OF GEOPHYSICAL METHODS IN NM AREA OF LAOS |
| JIA Run-xing1,2,3, CHEN Xian-wu4, LUO Fa-ke4, WEI Shou-xian3 |
1. Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China;
2. Beijing Institute of Geology for Mineral Resources, Beijing 100012, China;
3. Beijing Donia Resources Co., Ltd. Beijing 100012, China;
4. Guizhou Bureau of Nonferrous Metals Geology and Exploration, Guiyang 550005, China |
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Abstract Located in the north-central part of Laos, the work area is covered by rainforest and adjacent to the intersection between NW-trending Truong Son magma-tectonic belt and NE-trending Louangphabang magma-tectonic belt. In order to survey the copper polymetallic resources of this work area, the authors employed high-precision geomagnetic method and IP intermediate gradient respectively, and the results show that most geophysical anomalies correspond to the distribution of skarn mineralized bodies in the contact zone between granite and carbonate rock. A comparison of high-precision geomagnetic method with IP intermediate gradient shows that the exploration effect of high-precision geomagnetic method with lower cost and simple operation is better than that of IP intermediate gradient in rainforest landscape areas.
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Received: 09 November 2010
Published: 15 December 2011
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