中南大学学报（自然科学版）2012，Vol.43Issue(11)：4381-4387,7.
广西大福楼锡多金属矿床铅同位素地球化学
Lead isotope geochemistry of Dafulou tin-polymetallic deposit, Guangxi
摘要
Abstract
In order to discuss the ore-forming material source and its characteristics, lead isotope composition and its tectonic setting were analyzed. The results indicate that the w(206Pb)/w(204Pb) of sulfide ores range from 17.478 to 18.431, with an average of 17.991 and the maximum difference of 0.953, the w(207Pb)Av(204Pb) of sulfide ores range from 15.440 to 15.717, with an average of 15.582 and the maximum difference of 0.277, the w(208Pb)/w(204Pb) of sulfide ores range from 37.556 to 38.839, with an average of 38.233 and the maximum difference of 1.283. The values of F, ?and w(Th)/w(U) vary from 0.592 to 0.638, 9.26 to 9.69 and 3.74 to 3.97, respectively. According to Zartman tectonic pattern, the lead isotope values project in two zones, between the upper mantle and orogenic belt and between orogenic belt and upper crust, which suggests that the ore lead is supplied by both the mantle and crust, not all by granitic magma. In addition, on the basis of Doe lead isotope diagram for discriminating tectonic setting, the values of lead isotope are characterized by concentrated distribution, between orogenic belt and upper crust mainly, which indicates that the upper crust is also one of the main lead sources and supplies lead for mineralization. The Dafulou deposit is related to orogenic tectonic event and forms in the environment of orogenic belt.关键词
Pb同位素/成矿物质来源/矿床成因/大福楼锡矿/广西Key words
Pb isotope/ ore-forming material source/ ore genesis/ Dafulou tin deposit/ Guangxi分类
天文与地球科学引用本文复制引用
成永生,胡瑞忠..广西大福楼锡多金属矿床铅同位素地球化学[J].中南大学学报（自然科学版）,2012,43(11):4381-4387,7.基金项目
国家自然科学基金资助项目(41202051) （41202051）
中国博士后科学基金资助项目(2012M521721) （2012M521721）
中央高校基本科研业务费自由探索计划项目(201012200210) （201012200210）
