摘要
中元古界双桥山群上亚群是赣东北地区重要的含金建造,Au的背景含量为25.3ppb。金山金矿严格受该亚群第二段岩层的控制。矿床的微量元素和同位素特征反映了金山金矿成矿作用为区域性动力变质作用,成矿元素来自围岩,成矿热液为变质热液,同时有天水的加入。因此,金山金矿系在沉积作用形成初始富集的背景下,经变质热液改造而形成的金矿床。
The middle Proterozic upper subgroup of Shuangqiaoshan group is an important Au-bearing for-mation which has content of gold about 25.3ppb. Jinshan gold deposit was located in the second sectionof the upper subgtoup of Shuangqiaoshan group. The characters of trace elements and stable isotopes ofthe gold deposit show that Jinshan gold depost was formed during the process of regional dynamometa-morphism, ore-forming element was provided by wall-rocks, ore-forming hydrothermal solutionswere the mixtures of metamorphic solutions and heated meteoric water. Based on above facts, we canconclude that Jinshan gold deposit was formed by metamorphic solutions acting upon Au-bearimg for-mation
出处
《地质找矿论丛》
CAS
CSCD
1991年第4期18-27,共10页
Contributions to Geology and Mineral Resources Research
