摘要
中国前寒武纪含金岩系密切相关的金矿储量占全国岩金储量的73.85%,它几乎囊括了全国的金产量.已发现的金矿资源基地,基本上沿三条近东西向的槽台边缘构造带成带分布,由于受中生代环太平洋板块的作用影响,产生了一系列北东—北北东向的超壳型深大断裂,使中国前寒武纪金矿产生了极其明显的活化、改造和重就位作用.因此,中国东部金矿具有沿北东向深大断裂成串分布的规律.从10个方面讨论了中国前寒武纪金矿的成矿特点和找矿途径,建立了“三个系统”相统一的成矿找矿模式.
The Precambrian gold deposits are accordance with the metallogenetic regularity of the gold deposits hosted in the strata of 'old (Precambrian)and new (Mesozoic and Cenozoic) Era' in the world. The gold deposit hosted in Precambrian auriferrous rock systems is 73.85% of total hard rock gold reserves, and almost comprises all gold products in China. The gold deposits discovered are basically distributed on three EW tectonic belts along the border between platform and geosyncline. A series of NE-NNE trending large scale deep fracture of super crust type were formed by Mesozoic Pacific plate tectonic activity, which make the Precambrian gold deposits reraobilized, transformed and localized. Thus, the gold deposits are distributed along NE trending large scale deep fractures in the Eastern China. The metallogenetic features and prospecting ways are discussed in ten aspects, and a metallogenetic and prospecting model about the Precambrian gold deposits of China in accordance with so called 'three-systems'are established.
出处
《矿产与地质》
1991年第2期73-80,共8页
Mineral Resources and Geology
关键词
金矿
成矿
找矿
模式
前寒武纪
gold deposit, precambnan period metagenie model.
