应用铈异常示踪沉积构造环境——以贵州铜仁坝黄磷矿为例  

THE CERIUM ANOMALY TRACER FOR SEDIMENTARY TECTONIC ENVIRONMENT: A Case Study of the Bahuang Phosphorite Deposit in Tongren,Guizhou Province

作　　者：谢宏[1] 

机构地区：[1]贵州大学资源与环境工程学院,贵州贵阳550003

出　　处：《地质与资源》2012年第4期406-409,共4页Geology and Resources

基　　金：贵州省2011年地勘基金项目

摘　　要：贵州铜仁坝黄磷矿稀土元素分析结果表明,磷块岩及其围岩具显著的Ce负异常,说明磷块岩是大陆边缘海盆较深水沉积产物,其沉积构造环境与区域岩相古地理研究结论一致,证明Ce异常是示踪沉积古构造环境的良好指示剂.Rare earth element analysis reveals that the phosphorite and wallrock in the Bahuang phosphorite deposit show a remarkable negative Ce anomaly,indicating that the phosphorite is typical marine sediment deposited in ancient pericontinental sea with relatively deep water.Such sedimentary tectonic environment is in accord with the conclusion by the regional lithofacies paleogeographic study,suggesting that the Ce anomaly is a good tracer for sedimentary paleo-tectonic environment.

关 键 词：Ce异常 沉积构造环境 示踪 磷矿 贵州铜仁 

分 类 号：P595[天文地球—地球化学]