赣,湘南与成矿有关的复式小岩体若干问题的探讨

从华南复式岩体的基本特征,结合岩石、矿物及地球化学的研究,认为复式岩体的组成主要有三;①似斑状中粒黑云母花岗岩.它是岩浆作用的产物;②细粒花岗岩,它是残余岩浆渗浸与注浸作用的产物;③中粒花岗岩.它是粒间流体渗浸交代作用的产物.同时还计论了岩体与成矿的关系.认为成矿与岩浆后期粒间含矿流体的渗浸成矿作用有关.而这一过程的强度和成矿元素组合类型,主要决定于岩体所处的地质环境及成矿时的封闭开放条件.

SOME FEATURES OF COMPOSITE GRANITE BODIES AND THEIR RELATIONSHIP TO THE METALLIZATION IN SOUTHERN CHINA

Some features of the composite granite body in Southern China are discribed in this paper. The bodies mainly consist of (1) porphyraceous medium-grained biotite granite being products of magmatism; (2)fine-grained granite being the products of infiltration and injection from residual magma; (3) medium-grained granite being the products of the infiltrative metasomatism of the deuteric fluid, respectively.The relationship of the composite granite bodies to the metallization in Southern China is also discussed. It is suggested that the metallization is results from the infiltration and injection of the deuteric ore-bearing fluid. The intensity of the metallization processes and element association types are mainly determined by the geological environment and the enclosed and opened condition.