| 长江中下游地区多位一体大型、超大型铜矿形成机制的地质、地球化学研究 |
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| 引用本文：.1997.Geological-geochemical Studies of the Formation Mechanism of “integral whole ofmultiplaces”large and superlarge copper deposits in the middle and lower reaches of the Yangtze river[J].Mineral Deposits,16(3):225~234,242 |
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| 基金项目:国家自然科学基金项目 (49473187)和国家“八五”科技攻关计划 (85-901-03-081) |
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| 中文摘要:长江中下游地区是我国铜（金）、铁资源的重要基地，其中多位一体铜矿床是环太平洋成矿带内特有的一类大型、超大型矿床。研究表明：多位一体大型、超大型铜矿床与中生代岩浆作用有着密切的时空关系和成因联系，也是该类矿床的主导控矿因素；而基底类型及赋矿围岩的物理化学性质是矿床形成的特定外部条件。 |
| 中文关键词:多位一体铜矿 形成机制研究 长江中下游地区 |
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| Geological-geochemical Studies of the Formation Mechanism of “integral whole ofmultiplaces”large and superlarge copper deposits in the middle and lower reaches of the Yangtze river |
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| Abstract:The middle and lower reaches of the Yangtze River is the major area for copper (gold) and iron resources of China, in which "integral whole of multiplaces" copper deposits make up a special type of large and superlarge deposits along the circum-Pacific metallogenic belt. The concentration of very rich metallogenic elements is attributed to its tectonic setting, magmatism and special enrichment mechanism. Hence, studies should be carried out in the light of the compositions of various layers of regional lithosphere and the metallogenic mechanism including the enrichment, inheritance and superimposition of ore-forming elements. Studies show that the spatial distribution of "integral whole of multiplaces" large and super large copper deposits is controlled obviously by deep intermediate-acid magma series formed along the jointing zone between the North China land block and the Yangtze landblock in the middle and lower reaches of the Yangtze River. As a result of the intensification of the copper-rich basic crust and the favorable geochemical barrier, the underplating between the two blocks, the vertical crust-mantle interaction in the jointing zone and the continued enrichment of metallogenic elements through multi-stage "magmatic purnp”, copper, a deep metallogenic element, was continuously and effectively piled up and concentrated until the formation of rich deposits in the middle and lower reaches of the Yangtze River. |
| keywords:“integral whole of multiplaces” copper deposit, studies of formation mechanism, middle and lower reaches of the Yangtze River |
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