前寒武纪地质体中金矿产的形成时代

赋存在前寒武纪地质体中的金矿产,除外生者与地质体沉积期为同时代形成,但一般还有沉积期后内生成矿作用叠加、改造者以外,其他内生金矿产则可能与火山喷发-沉积或岩)或侵入成岩同期,也可能是在成岩期后的前寒武纪构造-岩浆作用下新生、改造和叠加形成,还可以在显生宇地槽阶段、地洼阶段的强烈构造-岩浆作用下新生、改造和叠加形成。本文重点讨论其形成时代的判别及在地洼阶段形成、并赋存在前寒武纪地质体中的金矿产。

METALLOGENETIC EPOCH OF GOLD HOSTED IN PRECAMBRIAN GEOLOGIC BODY

The gold mineral product, with the exception of the exogenetie ore deposit, hosted in Precambrian geologic body has possible following metallogenetic epoches:① Some have been formed simultaneously with the volcanic eruption-sedimentary (diagenetic) process or the magmatic invasion (segregation); ②A number of were regenerated (remade) or diplo- ectono-magmatism after their host rock was formed; ③A number of were regenerated (remade)or diplogenerated by Phanerozoic (geosynclmal and diwa ages) tectono-magmatism. In this article are mainly inquired judgment way to the gold metallogenetic epoch and the gold mineral deposit formed in the diwa age and hosted in Precambrian geologic body.