摘要
微细浸染型金矿是中国西部印支褶皱区的主要金矿类型。浅变质浊积岩建造、区域性地热异常和配套的断裂系统是成矿最基本的条件。研究认为,该区具有寻找这类金矿的良好前景,并指出了找矿方向和找矿标志。
The mojor type of micro-disseminated gold ore deposit in the west China is formed by epithermalgroundwater fluid. The gold-bearing turbidite is the source bed. Magmatism, high palaeo-geothermalgradient and the regional geothermal anomalies caused by strong tectonic compression are the motiveforce to migrate ore materials. The relavent fracture system is the basical strctural condition for Aumetallogeny, i. e. ore fluid is chanelled by major fractures but the gold ore deposit is located at the dila-tant parts of the sub-scaled compressional-tortional fractures. Detailed study reveals that geological conditions in the West China is propitious for micro-diss-minated gold metallogeny. It should be a target area. Prospect and exploration can be carried out alongbig fractures which are often boundaryes of different geological bodies and the metallogenic marks aredesigned.
出处
《地质找矿论丛》
CAS
CSCD
1991年第4期28-39,共12页
Contributions to Geology and Mineral Resources Research
