摘要
对贵州天柱大河边重晶石矿床硫同位素组成进行了系统研究,该矿床重晶石的硫同位素组成为36.7‰～41.6‰,具有比同期海水硫酸盐高得多的硫同位素组成特征,且在δ34S分布直方图上呈塔式,表明形成该矿床的硫来源单一,主要来自于海水中硫酸盐并经历了较强的生物细菌分馏作用,且矿床形成环境为半封闭-封闭的台地泻湖环境。
Sulfur isotope is widely used to trace elemental sulfur and determine sedimentary environment of sulfate deposits. Systematic study on sulfur isotope of Dahebian barite deposit has not been reported yet. Analysis of sul- fur isotope is taken on geological samples from Dahebian barite deposit in Tianzhu county, Guizhou province. The sulfur isotope composition of 14 samples is between 36.7‰-41.6‰ and these sulfur isotopic compositions are characterized by tower style distribution, which indicating that elemental sulfur is of single-source and mainly from the sulfate which is dissolved in the seawater and experience strong bacterial reduction. This deposit forms in a semiclosed-closed lagoon environment in the carbonate platform.
出处
《东华理工大学学报（自然科学版）》
CAS
2009年第3期205-208,共4页
Journal of East China University of Technology(Natural Science)
基金
国家自然科学基金(40638042)
关键词
重晶石矿床
硫同位素
细菌还原作用
泻湖环境
贵州天柱
barite deposit
sulfur isotope
bacterial reduction
lagoon environment
Tianzhu Guizhou province
