摘要
赋金闪长岩类侵入体主要发育于褶皱带中,形成时代在晋宁期至印支期,金矿主要以石英硫化物型产于岩体破碎带中,成矿时期在印支期到喜山期之间,成岩成矿之间存在巨大时差,成矿物质主要来自岩体及含金沉积岩系,成矿流体以大气降水及建造水为主。闪长岩类侵入体中的金矿床主要是改造作用形成的。
The gold-hosting diorite was formed in Jinning period to Indosinian and occurs in fold system. The gold mineralization occurs mainly as quartz-sulphide veins; the ore deposits were formed in Indosinian to Yanshanian. There is a great time gap between the age of gold deposits and that of gold-hosting intrusions. Based on the geochemistry of Pb, H and O isotopes, it is considered that the ore-forming materials derived from intrusions and fluid from meteoritic water and formational water. Those types of gold deposits were formed by reworking process.
出处
《地质与勘探》
CAS
CSCD
北大核心
2000年第1期17-19,共3页
Geology and Exploration
基金
国家自然科学基金!(编号 :493 72 10 5 )
关键词
金矿床
改造成矿
侵入岩
闪长岩类
侵入体
gold deposit, mineralization by reworking process, intrusion
