摘要
通过大量的K-Ar同位素年龄和硫、铅、氢-氧同位素数据统计、对比分析,认为燕山地区陆相火山-次火山岩型银矿床与著名的环太平洋东带陆相火山岩型银矿床有着明显的差别.本区银矿成矿时代为195～100Ma;成矿物质以深部来源为主,兼有基底和盖层物质加入;成矿热液主要是岩浆水中混入大量天水的混合水.
The statistics and analysis on K-Ar ages and sulfur, lead and hydrogen-oxygen isotope data show that, the terrestrial volcanic-subvolcanic silver deposits in Yanshan area are obviously different from those in the eastern circum-Pacific belt. The metallogenetic epoch of the silver deposits in Yanshan area ranges from 195 to 100 Ma. The ore-forming matters are mainly deep-sourced, with addition of fundamental and cover material. The hydrothermal ore-forming solution is dominated by magmatic water mixed with meteoric water.
出处
《地质与资源》
CAS
2006年第3期179-186,共8页
Geology and Resources
关键词
火山-次火山岩型银矿床
成矿时代
同位素
成矿物质来源
volcanic-subvolcanic silver deposit
mctallogenetic epoch
isotope
source ore-forming matter
