Collaborative Research: Volatiles in Mantle Plumes: Implications for Geochemical Cycling of Volatile Elements

合作研究：地幔柱中的挥发物：对挥发性元素地球化学循环的影响

• 批准号: 9530373
• 负责人: Jacqueline Dixon
• 金额: $ 18.84万
• 依托单位: University of Miami
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-10-15 至 2000-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9530373&HistoricalAwards=false
• 关键词: Collaborative; Research; Volatiles; Mantle; Plumes

This project will analyze the water and carbon dioxide in basalt glasses from four areas chosen to represent different mantle magma sources. Heavy isotopes and He-3 distinguish deep (primary) and shallow (recycled) mantle-plume reservoirs. Characterization of the volatiles will contribute to understanding physical properties and fractionation of the melts, as well as the degree of crustal contamination resulting from recycling of subduction-zone material.

该项目将分析来自四个地区的玄武岩玻璃中的水和二氧化碳，这些地区被选择来代表不同的地幔岩浆来源。 重同位素和He-3区分深（原生）和浅（再循环）地幔柱水库。 挥发物的特性将有助于了解熔体的物理特性和分馏，以及俯冲带物质再循环造成的地壳污染程度。