| 老挝全国地球化学填图与成矿远景区预测 |
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| 关键词:Laos geochemical mapping national-scale metallogenic prospective area |
| 基金项目:国家重点研发计划项目(编号: 2016YFC0600600);中国地质调查局地质调查项目(编号: 121201108000150005; 1212011120331; 1212010661313) |
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| National-scale Geochemical Mapping and Prediction of Metallogenic Prospective Areas in Laos |
| With the promotion of the National Initiative “The Belt and Road” and the support of the China Geological Survey, a national-scale geochemical mapping of 210 000 km2 was carried out in Laos, which filled the blank of national-scale geochemical mapping in Laos, and provided the basic geochemical guarantee for Laos’ basic geology, mineral development, environmental protection, and agricultural production and some other fields. During the project, a total of 1905 geochemical samples were collected in Laos, 71 elements were analyzed through several testing methods. Based on the analysis results, the geochemical maps and geochemical anomaly maps of Laos were compiled. By studying the geochemical parameters of Au, Cu, Ni, Co, Mn, Zn, Ag, As, Sb, Pb, Bi and Sn in Laos and their correlations, it is found that the median values of these elements are less than the values of sediments in the tropical rainforest area of China, and the median values of these elements are less than their average values. As, Au, Bi, Pb and Sb are unevenly distributed in Laos, and the local enrichment of elements is obvious. Through the analysis of R-type cluster, the elements are divided into five clusters: Au; Cu; Ni, Co; Mn, Zn; and Ag, As, Sb, Pb, Bi, Sn. According to the geochemical distribution characteristics and comprehensive anomaly characteristics of the elements, Laos is divided into seven metallogenic prospective areas. |
| WANG Wei,WANG Xue-qiu,ZHANG Bi-min,HAN Zhi-xuan,Sounthone LAOLO,Phomsylalai SOUKSAN,LIU Han-liang,LIU Dong-sheng.2020.National-scale Geochemical Mapping and Prediction of Metallogenic Prospective Areas in Laos[J].Acta Geoscientica Sinica,41(1):80-90. |
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