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: 0926491
• 负责人: Karen Harpp
• 金额: $ 21.6万
• 依托单位: Colgate University
• 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 2013-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0926491&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.

披风羽被认为负责创建包括夏威夷，复活节和加拉帕戈斯在内的海洋群岛。同样，中海脊是板块构造中的必要驱动力。 Galápagos群岛是地球上为数不多的地幔羽和中山脊相互作用的地方之一，这为我们提供了难得的机会来提高我们对地球重要动态过程的理解。这项研究通过地球物理数据以及对从海底收集的岩石进行地球化学分析来开发有关羽毛岩岩浆和构造相互作用的多学科观点。工作包括对北加拉帕戈斯海底进行详细的测深和重力调查。深海摄像头遍历和岩石钻井还提供了基本数据，以解决海底结构织物以及有关地壳和上地幔的信息。对收集的熔岩的地球化学分析提供了确定李子材料在Archivelago和中海脊之间运输的机制的重要信息。该项目是本科生（高露洁大学）和研究机构（爱达荷大学伍兹霍尔海洋学机构）之间完全综合的研究和教学合作。本科生全面参加了该项目，包括巡航和随后的扩展研究项目，在此项目中，他们开发了尖端的分析技能并在国际会议上介绍他们的工作。更广泛的影响还包括博士后同胞支持以及对厄瓜多尔的学生和来自查尔斯·达尔文研究站的海洋生物学家的培训。这项工作的影响将有助于加拉帕戈斯群岛的持续保护工作。