Collaborative Research: Coupling Mantle Volatiles, Eruption Dynamics, and Tectonics on the Mid-Atlantic Ridge

合作研究：地幔挥发物、喷发动力学和大西洋中脊构造的耦合

• 批准号: 1260578
• 负责人: Eric Mittelstaedt
• 金额: $ 12.34万
• 依托单位: Regents of the University of Idaho
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-07-01 至 2019-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1260578&HistoricalAwards=false
• 关键词: Collaborative; Research; Coupling; Mantle; Volatiles

Mapping and sampling of a portion of the mid-Atlantic spreading center, where a unique geochemical signature was determined for a 1980's 'popping rock' sample, will take advantage of recent recognition that tectonic deformation may play a role in focusing volatile fluxing from the mantle. Geophysical mapping, targeted sampling by ROV, and a complete suite of post-cruise geochemical analyses aim to determine whether the early quantification of mantle volatiles was representative for the region and/or whether such signatures cluster only near faults, thus implying localized fluxing. Such finding could uproot long-standing inferences about background mantle volatile contents. Students will be introduced to marine research and a postdoc will delve into a new aspect of spreading center processes. Collaboration with IPGP France will train these young scientists in integrated, international, interdisciplinary geoscience.

中大西洋扩张中心的一部分，在那里一个独特的地球化学特征被确定为20世纪80年代的“爆岩”样本的映射和采样，将利用最近认识到，构造变形可能发挥作用，集中挥发性通量从地幔。地球物理测绘、地球物理勘探局有针对性的采样以及一整套巡航后地球化学分析旨在确定地幔挥发物的早期定量是否具有该区域的代表性和/或此类特征是否仅聚集在断层附近，从而意味着局部流动。这一发现可能会推翻长期以来关于背景地幔挥发物含量的推断。学生将被介绍到海洋研究和博士后将深入研究传播中心过程的一个新方面。与IPGP法国合作将在综合、国际、跨学科的地球科学方面培训这些年轻科学家。