Evidence for an Oceanic Mg+2 Sink in Nearshore Tropical Sediments: New Constraints from the Li Isotopic Composition of Clays and Iron Oxyhydroxides

近岸热带沉积物中海洋 Mg 2 沉降的证据：粘土和羟基氧化铁的 Li 同位素组成的新限制

• 批准号: 0074182
• 负责人: Tim Ku
• 金额: $ 7.2万
• 依托单位: Ku, Tim C
• 依托单位国家: 美国
• 项目类别: Fellowship Award
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-11-15 至 2004-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0074182&HistoricalAwards=false
• 关键词: Evidence; Oceanic; Mg+2; Sink; Nearshore

0074182KuThe project involves measuring the Li isotopic composition of clays and oxyhydroxides to evaluate the significance of a proposed oceanic Mg+2 sink in nearshore marine sediments. The project has obvious links with studies using Li as a groundwater tracer and determining the Li isotope fractionation on clay minerals. The PIs advisor has considerable expertise in Sr isotope applications to terrestrial chemical weathering as well as major element and clay mineral generation studies of soils. These topics are key components in this project. This project will not only answer an outstanding geochemical question, but will also fill a void in the PIs current geochemical background.

0074182KuThe project involves measuring the Li isotopic composition of clays and oxyhydroxides to evaluate the significance of a proposed oceanic Mg+2 sink in nearshore marine deposition. 该项目与利用锂作为地下水示踪剂和测定粘土矿物上锂同位素分馏的研究有着明显的联系。 PI顾问在Sr同位素应用于陆地化学风化以及土壤的主要元素和粘土矿物生成研究方面具有相当的专业知识。 这些主题是本项目的关键组成部分。 该项目不仅将回答一个突出的地球化学问题，而且还将填补PI当前地球化学背景中的空白。