"江南古陆"中段湖南地区金矿床成矿模式研究

“江南古陆”又称“江南古岛弧”,它是我国南方一条重要的金成矿带,其内发育有一系列似层状的金矿床,有关其成因长期以来一直被认为属于晚元古代的层控矿床。笔者通过对“江南古陆”金矿成矿带上新近发现的万古金矿床和邻近的其它金矿床进行对比性研究,提出了对“江南古陆”中段湖南地区金矿床成矿模式的有关认识,认为元古宙浅变岩系作为金矿赋存层位,在成矿作用过程中提供了一定的物源,但主要成矿作用发生在燕山期。

Study on metallogenic model of gold deposit in Hunan Region of the middle part of"Jiangnan Ancient land"

Jiangnan Ancient Land" is also called "Jiangnan Ancient Island Arc".It is an important gold deposit belt in the south part of chine,within which a series of layered like gold deposit developed.Its origin concerned has long since been considered to be layer bound deposit of late proterozoic era.Through contrast studies between Wangu Gold Deposit(which was found recently in this metallogenic belt)and the adjoining deposits,the writers of this paper consider the bypabyssal metamorphic rock series as the strata of the gold deposit occurrence which provide material source in the process of metallization.The metalization mainly took place at Yanshan period.