摘要
太古宙绿岩建造中与韧性剪切带有关的动力变质热液金矿床(排山楼式),早-中元古代变质碎屑岩建造中的浊积岩金矿床(猎岭式或白云式)和与显生宙交代-深熔花岗岩类有关的钾质蚀变岩型金矿床(东坪-后沟式)是华北地台北缘近几年发现和探明的具有巨大资源潜力的新类型金矿床。区域潜在含金性和适宜的活化营力是这些矿床形成的基本条件。通过矿源层(岩)中成矿物质的二次活化再成矿是它们的主要成矿机制。稳定同位素研究成果可为此提供证据。
The dynamic-metamorphic hydrothermal gold deposit(paishanlou type) occurred in ductile shear zone of Archeozoic greenstone formation, turbidite-hosted gold deposit occured in early or meso-Proterozoic metaclastic for -mation(Maoling type, Baiyun type),and K- altered rocks type of gold deposits related to metasomatic- anatectic granitoid are three new types of gold deposits. They were found out and prospected before bng. There are great potentail gold resources at them The potentail regional gold content and favorable remobilization agents are basic conditions for the formation of gold deposit. The basic mechanism of gold metaliogeny is characterized by double remobilization and concentration of gold in source beds. The study of stable isotope might confirm the remobilization metaliogeny of gold deposit.
出处
《地质与资源》
CAS
1992年第3期8-17,共10页
Geology and Resources
