Collaborative Proposal: Anatomy of an Overlapping Spreading Center; Geochemical and Geological Study of the EPR 9°03'N OSC

主要研究者/机构：Klein，艾米丽（杜克）标题：合作提案：重叠扩张中心的解剖; EPR 9 03 'N OSCA的地球化学和地质研究（Klein/白色/Von Damm/西姆斯/Perfit）智力功绩。本项目的目的是检验东太平洋海隆的熔岩成分、热液喷口场位置和喷发地点与上地幔熔体的行为和位置有关的假设。该项目以最近获得的地震数据为基础，这些数据详细说明了该地区地壳下现有的熔融岩床和熔融量估计数。其目的是确定暴露的地质特征和成分与岩床和熔体的体积和分布之间是否存在关系。PI将使用磁力、声纳和Jason II进行更详细的绘图和采样。然后，这些数据将与SIO可视化中心现有的地震数据进行比较和整合。学生将参与航行和数据分析。研究生和本科生将参与该项目，无论是直接在海上，并通过项目工作，开发作为现场计划的结果。研究所在学生参与方面的记录以及这些努力的学术成果表明，这将是一个非常成功的让研究生和本科生参与海洋地质研究的手段。参与海洋计划还为中学生提供了一个了解海洋地质学的机会。对科学界的影响，特别是如果共同登记源岩浆岩床的地球物理证据的地表地质学/地球化学的基本目标，将是最重要的，是符合R2 K的目标。这将通过利用SIO可视化设施的地震层析成像数据库来扩大。

PI/Institution: Klein, Emily (Duke)Title: Collaborative Proposal: Anatomy of an overlapping spreading center; geochemical and geological study of the EPR 9 03'N OSCAbstract: 0526120 (Klein/White/Von Damm/Sims/Perfit)Intellectual Merit. The objective of this project is to test the hypothesis that lava composition, hydrothermal vent field location, and eruption sites on the East Pacific Rise are linked to the behavior and location of melt in the upper mantle. The project builds upon recently acquired seismic data that details existing melt sills and estimates of melt volume beneath the crust in the area. The intent is to determine whether a relationship exists between exposed geological features and composition, and sill and melt volume and distribution. The PIs will perform more detailed mapping and sampling using magnetics, sonar, and Jason II. That data would then be compared to and integrated with existing seismic data at the SIO Visualization Center. Students would be involved in the cruise and data analyses.Broader Impacts. Graduate students and undergraduates will be involved in the project, both directly at sea, and through project work that develops as a consequence of the field program. The PIs' track record in involvement of students, and academic outputs from those efforts, indicates that this will be a very successful means of involving graduate and undergraduate students in marine geological research. Involvement in the SEAS program also provides an opportunity for middle school students to gain an understanding of marine geology. The impact on the scientific community, particularly if the underlying goals of coregistering surficial geology/geochemistry with geophysical evidence for source magma sills, will be most significant, and is well in line with R2K goals. This will be amplified by making use of the SIO Visualization facility's seismic tomography database.