花岗岩类岩体与金矿床成因关系的探讨

花岗岩类岩体与金矿床存在着密切的空间联系，其成因关系一直是矿床学界争论的焦点，目前传统的岩浆热液成因观点仍居统治地位。随着地质资料的积累，高温高压实验技术，尤其是金矿床同位素定年技术的进展，传统观点受到了严峻挑战。成岩成矿的时代与时差、成矿流体的来源和成矿物质的来源等确定金矿床成因类型关键因素的综合研究表明，有密切空间关系的金矿床与花岗岩类岩体之间，在多数情况下两者并无直接的成因联系，金矿床不是岩浆热液成因，而是与大气降水或建造水有关的改造成矿作用的产物。

GENETIC RELATIONSHIP BETWEEN GRANITOIDS AND GOLD DEPOSITS

The genetic relationship between granitoids and gold deposits has long been and is still a controversial focus on their close spatial connection. At present, the traditional magnatic hydrothermal theory is still a dominant one. This viewpoint, however, is being strongly challenged by more and more geologic data and advances in high-temperature and high-pressure experimental techniques, especiallyin isotopic dating techniques for gold deposits. Synthetical investigations int0 key factors determining the genetic types of gold deposits, the formation time gaps between gold deposits and granitoids, and the sources of ore-forming fluid and ore-forming materia1 have shown that gold dePOsits in most caseshave no direct genetic link with granitoids. Although close spatial connections exist between them and gold deposits are not magnatic hydrothermal in genesis, the products of reworking mineralization are related to meteoric water or formation water.