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

对大西洋中部扩张中心的一部分进行测绘和采样，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。在那里，20世纪80年代的“爆裂岩石”样本确定了独特的地球化学特征。地球物理制图、ROV定向采样以及一套完整的巡航后地球化学分析旨在确定地幔挥发物的早期量化是否代表该地区，以及/或者这些特征是否仅聚集在断层附近，从而暗示局部通量。这一发现可以彻底推翻长期以来对背景地幔挥发性成分的推断。学生将被引入海洋研究，博士后将深入研究传播中心过程的一个新方面。与IPGP法国的合作将在综合的、国际的、跨学科的地球科学方面培训这些年轻科学家。

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.