摘要
山门银矿铅同位素地质特征的研究结果表明,矿石铅为年轻、稳定的正常铅,成矿时代为燕山晚期;黄莺屯组地层及岩浆岩系列岩石铅为弱异常铅。从铅同位素组成及源区特征值看,矿石铅与岩浆岩岩石铅为同源的壳幔混合铅,表明成矿物质来自深源,并与燕山期岩浆活动密切相关。铅构造模式应属太平洋西岸岛弧铅。
The study on geological characteristics of lead isotopes in the Shanmen silver deposit suggests that ore lead is young, stable normal lead,and minerogenetic epoch belongs to late Yanshanian; the rock lead from the Huangyingtun formation stratum and magmatic series is incompetent anomalous lead. According to components and source area features, it is suggested that ore lead and magmatic rock lead are cogenetic crust-mantle mixed lead, and ore -forming materials were derived from hypogene Source and close related to Yanshanian magmatic activity. Lead structural pattern should belong to island arc in the west coast of the pacific.
出处
《吉林地质》
1992年第1期60-69,共10页
Jilin Geology
关键词
银矿
铅
岩石
成矿
物质来源
Ore lead Ore lead property Interrelation Minerogenetic epoch Minerogenetic materials source
