Marine Geochemistry of Lithium Isotopes-A Continued Study

锂同位素的海洋地球化学-持续研究

• 批准号: 9102933
• 负责人: Lui-Heung Chan
• 金额: $ 12万
• 依托单位: Louisiana State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-05-15 至 1994-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9102933&HistoricalAwards=false
• 关键词: Marine; Geochemistry; Lithium; Isotopes; Continued

Objective of this work characterize Li isotopic composition of major reservoirs and apply isotopic systematics to probe the nature and magnitude of element transfer during various marine processes. Specific research will include (1) estimation of the flux of Li isotopes from continental runoff; (2) study of seawater-ocean crust exchange as reflected in the distribution of Li isotopes in metabasalts, hydrothermal fluids and weathered seafloor basalt; (3) assessment of the Li in the ocean; and (4) evaluation of the element cycling processes at convergent plate margins including island arcs and continental margins. The results of this study will constitute the first comprehensive Li isotope data which not only will characterize the geochemical cycle of Li but can serve as a basis for understanding oceanic processes that have significant geochemical and geophysical implications.

本工作的目的是表征锂同位素组成的 应用同位素系统学方法， 各种海洋活动期间元素迁移的性质和幅度 流程. 具体的研究将包括（1）估计 大陆径流Li同位素通量研究 海水-洋壳交换反映在 变质玄武岩、热液流体和 风化海底玄武岩;（3）评估锂在海底玄武岩中的含量。 （4）元素循环过程的评价 会聚板块边缘，包括岛弧和大陆 利润率 这项研究的结果将构成第一个 全面的锂同位素数据，不仅将表征 Li的地球化学循环，但可以作为基础， 了解海洋过程， 地球化学和地球物理意义。