| 巨型矿床与大型矿集区勘查地球化学 |
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| 引用本文： | 王学求.巨型矿床与大型矿集区勘查地球化学[J].矿床地质,2000,19(1):76-87. |
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| 作者姓名： | 王学求 |
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| 作者单位： | 中国地质科学院地球物理地球化学勘查研究所!廊坊 |
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| 基金项目： | 国家攀登项目!( B85-3 4 )，地矿部跨世纪人才计划资助 |
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| 摘 要： | 巨型矿床和大型矿集区有着巨量的成矿物质供应与聚集，表现为地壳上存在某些成矿元素含量高度聚集的地球化学块体．地球化学块体中只有一部分呈活动态易被各种流体携带的金属才能逐步浓集成矿，并在大矿、巨矿和矿集区周围留下一系列套合的地球化学模式谱系。文中阐述了发现和识别大矿、巨矿和矿集区四周套合地球化学模式的采样系统，研制了能觉察地下深部发出极微弱直接找矿信息的深穿透地球化学方法－－金属活动太测量与地球气纳微
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| 关 键 词： | 巨型矿床 大型矿集区 勘查地球化学 矿产勘查 |
Exploration geochemistry for giant ore deposit or world-class camps in concealed terrains |
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| Wang Xueqiu.Exploration geochemistry for giant ore deposit or world-class camps in concealed terrains[J].Mineral Deposits,2000,19(1):76-87. |
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| Authors: | Wang Xueqiu |
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| Abstract: | In recent years global mineral exploration activities are concentrating on giant ore deposits or world-class camps in concealed terrenes. New concepts and low-cost efficient methods were developed to meet the real challenge for regional exploration of giant ore deposits or world-class camps in large unexplored or unde rexplored terrenes. These new concepts can be summarized as follows: geochemical blocks, hierarchical geochemical patterns, available metals for ore formation, tremendous endowment and accumulation of mineralization metals, direct information exploration, deep-penetrating geochemistry, nanoscale metals in earthgas, mobile form sofmetals, holistic geochem ical sampling. From the studies it is concluded that the main difference between large or giant ore deposits and ordinary deposits lies in the tremendous endowment and accumulation of available mineralization metals for the formation of giant ore deposits. Thus, giant ore deposits are hosted by "geochemical blocks" with high abundance of metals in the earth crust and surrounded by ahierarchy of geochemical patterns from local, regional to provincial and even to domainal scales while ordinary deposits maybe surrounded at most by local or small regional geochemocal anomalies. This hierarchy of primary geochemical patterns can be carried to the surface and build up large regional superimposed geochemical patterns over concealed giant ore deposits at su rface. The omnipresent earthgasgene rated from the earth' s interior probably play the most important role in the process of transport of mobile metals from deeply concealed deposits. Based on the above concepts and theoretical considerations, the author proposed a sampling system for the delineation ofgiant ore deposits, developed deep-penetrating geochemical methods-collection of Nanoscale Metals in Earth Gas (NAMEG) and selective leaching of Mobile forms of Metals in Overburden (MOM EO), and estimated available metal tonnage for ore formation. |
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| Keywords: | giant ore deposit world\|class camps exploration geochemistry |
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