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.

对大西洋中部扩张中心的一部分进行测绘和采样，在该中心确定了 1980 年代“爆裂岩石”样本的独特地球化学特征，将利用最近的认识，即构造变形可能在集中地幔挥发性通量方面发挥作用。 。地球物理测绘、ROV 有针对性的采样以及一整套巡航后地球化学分析的目的是确定地幔挥发物的早期定量是否具有该地区的代表性和/或这些特征是否仅聚集在断层附近，从而意味着局部通量。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论。学生将了解海洋研究，博士后将深入研究传播中心流程的新方面。与 IPGP France 的合作将为这些年轻科学家提供综合、国际、跨学科地球科学方面的培训。