Insight into Mantle Melting and Crustal Differentiation of Ocean Island Volcanoes: An Isotopic and Trace Element Study of Waianae Volcano, Hawaii

深入了解洋岛火山的地幔融化和地壳分异：夏威夷怀阿奈火山的同位素和微量元素研究

• 批准号: 0337352
• 负责人: John Sinton
• 金额: $ 7.49万
• 依托单位: University of Hawaii
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-07-01 至 2007-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0337352&HistoricalAwards=false
• 关键词: Insight; into; Mantle; Melting; Crustal

The primary goal of this project is to do an isotopic and trace element study of samples from the Waianae Volcano in Hawaii. This study will take advantage of the deep exposure, and previously determined detailed knowledge of internal stratigraphy, and variations in magma supply and melting processes at different stages of volcanic evolution that should be correlated to changing distance from the Hawaiian plume center. This work will produce a high-quality, comprehensive data set that will provide insight into the nature of compositional components expressed when the volcano was above different portions of the plume, how these components contribute to Hawaiian magmas at variable extents of partial melting, and how variations in magma composition, partial melting and overall magma supply affected the development and evolution of magma reservoirs within the volcanic edifice. In terms of broader impacts, the project will contribute to the training of an undergraduate student in the acquisition and interpretation of isotopic and high-precision trace element data, and development of the early career of female post-doc Iris Van der Zander. Results of this work will be published in easily accessible journals, incorporated into classroom teaching and community lectures by the P.I.s, as well as into a popular Web site, and thus disseminated to a wide audience, including non-science majors.

该项目的主要目标是对夏威夷怀亚奈火山的样品进行同位素和微量元素研究。这项研究将利用深度暴露和先前确定的内部地层学的详细知识，以及火山演化不同阶段岩浆供应和融化过程的变化，这些变化应该与与夏威夷羽流中心的距离变化相关。这项工作将产生一个高质量、全面的数据集，从而深入了解当火山位于烟柱不同部分上方时所表达的成分的性质，这些成分如何在不同程度的部分熔融时对夏威夷岩浆作出贡献，以及岩浆成分、部分熔融和整体岩浆供应的变化如何影响火山建筑物内岩浆储藏的发展和演化。就更广泛的影响而言，该项目将有助于对本科生进行获取和解释同位素和高精度微量元素数据的培训，并促进女博士后Iris Van der Zander早期职业生涯的发展。这项工作的成果将发表在容易获得的期刊上，由私人投资者纳入课堂教学和社区讲座，以及一个受欢迎的网站，从而向包括非理科专业的广大受众传播。