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    中国区域成矿特征及若干值得重视的成矿环境

    Regional metallogenic features and some important ore-forming environments of China

    • 摘要: 提要:研究和发现更多的成矿环境和岩石建造,有助于扩大找矿领域,提高找矿成效。笔者试从中国的区域成矿特色出发,提出近期应注意的几种地质成矿环境。中国区域成矿的主要特征是:①古陆边缘矿床集中;②多重成矿作用发育;③叠加和改造成矿显著;④热液矿床丰富多彩;⑤有机成矿和无机成矿的复合;⑥矿床形成后变化与保存条件复杂。具有较大成矿潜力、可能有所发现的地质环境和岩石建造有:①黑色岩系;②暗色岩系;③复合沉积盆地;④古湖盆区与构造-岩浆带的复合;⑤叠加成矿的多种形式;⑥构造体制转折期与转折部位;⑦地球化学块体的成矿潜力;⑧深部探矿和矿化垂直分带。论文最后提出找寻新矿床的若干方法途径。

       

      Abstract: Abstract:The study and discovery of more ore-forming environments and rock formations are conducive to expanding the exploratory field and enhancing the ore prospecting efficiency. Based on the regional metallogenic features of China, the author proposes some ore-forming environments that we should pay more attention to recently. Major features of regional metallogeny of China are as follows:① many ore deposits are concentrated on the margins of the old land;② multi-stage mineralization is well developed;③ superimposition and modification of mineralization are pronounced;④ hydrothermal ore deposits are abundant and diverse;⑤ organic mineralization and inorganic mineralization are combined;⑥ conditions for changes and preservation after the formation of ore deposits are complex.The ore-forming geological environments and rock formations which have high ore potential and in which some findings may be made include:① black shale series; ② melanocratic rock series,;③ composite sedimentary basins;④compounding of ancient lake basins and tectono-magmatic belts;⑤ multiple forms of superimposition mineralization; ⑥ time and space of transition of tectonic systems,;⑦ ore potential of geochemical blocks,;⑧ exploration of deep ore deposits and vertical zoning of mineralization. At last the author suggests some methods and ways to discover new ore deposits in China.

       

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