摘要
抱伦金矿产于尖峰花岗岩体外接触带附近,直接赋矿围岩为下志留统陀烈组绢云母石英千枚岩。定年研究结果表明,花岗岩形成时代为205～230Ma,千枚岩变质作用主要发生于约210Ma,金矿成矿时代为210～190Ma。这一结果提供了矿床可能为岩浆成因的重要依据。
The Baolun gold deposit is situated in the external contact belt of the Jianfeng intrusive body. The wall rock is the sericite-quartz phyllite of the Lower Silurian Tuolie Formation. K-Ar dating shows that the granite formed at 205～230Ma, the wall rock deformed finally at about 210 Ma, and the ore-forming time is 210～190 /Ma. This result gives important evidence to the magmatic genesis of the gold deposit.
出处
《地质论评》
CAS
CSCD
北大核心
2002年第S1期84-87,共4页
Geological Review
关键词
抱伦金矿
成矿时代
矿床成因
Baolun gold deposit
ore-forming age
magmatic genesis of gold deposit
