Collaborative, RUI: Plume-Ridge Interaction in the Northern Galapagos: Understanding mantle-lithosphere dynamics through geochemistry, geophysical mapping, and gravity modeling

RUI 协作：加拉帕戈斯北部的羽流-山脊相互作用：通过地球化学、地球物理测绘和重力建模了解地幔-岩石圈动力学

• 批准号: 0926637
• 负责人: Daniel Fornari
• 金额: $ 38.42万
• 依托单位: Woods Hole Oceanographic Institution
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-09-01 至 2012-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0926637&HistoricalAwards=false
• 关键词: Collaborative; RUI; Plume; Ridge; Interaction

Mantle plumes are thought to be responsible for creating ocean archipelagos including Hawaii, Easter, and Galápagos. Similarly, mid-ocean ridges are an essential driving force in plate tectonics. The Galápagos Archipelago is one of the few places on the planet where mantle plumes and mid-ocean ridges interact, providing a rare opportunity to improve our understanding of Earth's important dynamic processes. This research develops a multi-disciplinary perspective on plume-ridge magmatic and tectonic interaction using geophysical data and geochemical analysis of rocks collected from the seafloor. Work includes carrying out a detailed bathymetric and gravity survey of the North Galapagos seafloor. Deep-sea camera traverses and rock dredging also provide essential data to resolve seafloor structural fabric and information about the crust and upper mantle. Geochemical analyses of collected lavas provide essential information for determining mechanisms by which plume material is transported between the archipelago and the mid-ocean ridge. This project is a fully integrated research and teaching collaboration between undergraduate (Colgate University) and research institutions (Woods Hole Oceanographic Institution, University of Idaho). Undergraduates participate fully in the project including the cruise and subsequent extended research projects during which they develop cutting edge analytical skills and present their work at international conferences. Broader impacts also include post-doctoral fellow support and training of students from Ecuador and marine biologists from the Charles Darwin Research Station, the primary institution responsible for conservation and research in the archipelago. Impacts of the work will assist in ongoing conservation efforts in the Galapagos.

地幔柱被认为是形成夏威夷、复活节岛和加拉帕戈斯群岛等海洋群岛的原因。同样，洋中脊是板块构造的重要驱动力，加拉帕戈斯群岛是地球上少数有地幔柱和地幔柱的地方之一。大洋中脊相互作用，为提高我们对地球重要动态过程的理解提供了难得的机会，这项研究发展了对羽流脊岩浆和岩浆脊的多学科视角。使用从海底收集的地球物理数据和地球化学分析进行构造相互作用的工作包括对北加拉帕戈斯海底进行详细的水深测量和重力调查，以及深海摄像机横移和岩石疏浚也提供了解析海底结构结构和信息的必要数据。关于地壳和上地幔的地球化学分析为确定羽流物质在群岛和洋中脊之间的传输机制提供了重要信息。本科生（科尔盖特大学）和研究机构（伍兹霍尔海洋研究所、爱达荷大学）之间的研究和教学合作充分参与该项目，包括巡航和随后的扩展研究项目，在此期间他们发展了尖端的分析技能并展示了他们的工作。更广泛的影响还包括对厄瓜多尔学生和查尔斯·达尔文研究站海洋生物学家的博士后支持和培训，查尔斯·达尔文研究站是负责群岛保护和研究的主要机构，这项工作的影响将有助于持续的保护。努力于加拉帕戈斯群岛。