摘要
文中对广东凡口铅锌矿区主要含矿地层作了剖析,认为它们属于半局限碳酸盐台地相,并细分为4个微相.对C、O同位素分布特点进行了研究.Na_2O的分布特点说明古环境有明显咸化.局限环境造成铅锌富集,这些元素吸附于粘土中,在成岩期释放于孔隙水中,使成岩溶液变为成矿溶液.
Main Ore horizons in the Fankou Pb-Zn mining district have been analysed. It is considered thatthey belong to cemi-confined carbonate platform facies and can be subdivided into four micro-facies. Thedistribution regularity of their isotopes C and O has also been studied. As shown by the distributionof Na_2O its palaeoenvironment was characterized by a distinct saliniferous nature. The confined environment gave rise to the enrichment of lead and zinc, with these ore-forming elements firstly adsorbed bysoil and then liberated into fracture water during diagenetic stage in order to change the diageneticsolution into ore-forming ore.
出处
《地质与勘探》
CAS
CSCD
北大核心
1989年第12期12-16,共5页
Geology and Exploration
