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；
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 elemens. 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 land block 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 pump”, copper, a deep metallogenic element, was continuously and effectively piled up and concentrated until the formation of rich depostis in the middle and lower reaches of the Yangtze River.
出处
《矿床地质》
CAS
CSCD
北大核心
1997年第3期225-234,共10页
Mineral Deposits
基金
国家自然科学基金
国家"八五"科技攻关计划资助
关键词
形成机制
长江中下游地区
铜矿床
地球化学
癷ntegral whole of multiplaces” copper deposit, studies of formation mechanism, middle and lower reaches of the Yangtze River
