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Rock Coring Koolau Volcano, Hawaii: Implications for Deep Mantle Recycling of the Crust

Rock Coring Koolau Volcano, Hawaii: Implications for Deep Mantle Recycling of the Crust
夏威夷库劳火山岩石取芯:对地壳深部地幔回收的影响
批准号:
9908911
负责人:
Michael Garcia
金额:
$9.9万
依托单位:
依托单位国家:
美国
项目类别:
Standard Grant
财政年份:
1999
资助国家:
美国
项目状态:
已结题
起止时间:
1999-09-01 至 2002-08-31

项目摘要

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中文摘要
翻译
地幔柱中的玄武岩提供了地幔组成和历史的基本信息。夏威夷羽流是地幔羽流的典型例子,它的玄武岩无疑是所有羽流中研究得最好的一组。夏威夷库劳火山的熔岩属于海洋岛玄武岩的一个独特的组成端部,似乎为地壳(沉积物和玄武岩)的深层地幔再循环提供了强有力的证据,尽管这种解释仍然存在争议,并且只基于火山最上层的表面取样。该方案要求拨款从一个245米深的水观测孔的底部获得300米深的岩心。从这口井中取出的岩石将延伸到火山的任何表面暴露之下,预计获得的岩石将比表面岩石经历更少的热带风化。在这个为期一年的项目中,我们将按照为夏威夷科学钻探计划开发的程序系统地描述井中的芯片和岩心,并对岩心和芯片进行初步的岩石学和地球化学表征。
英文摘要
Basalts from mantle plumes provide fundamental information on the composition and history of the Earth's mantle. The Hawaiian plume is the classic example of a mantle plume and its basalts are unquestionably the best studied suite from any plume. The lavas of Koolau Volcano in Hawaii belong to a distinct compositional endmember of ocean island basalts and appear to provide the strong evidence for deep mantle recycling of crust (sediment and basalt), although this interpretation remain controversial and is based on sampling only the uppermost veneer of the volcano. This proposal requests funding to obtain ~300 m of rock core from the base of a ~245 m deep, water observation hole. The rocks from this well will extend below any surface exposures of the volcano and it is expected that the rocks obtained will have experienced less tropical weathering than surface rocks. We will systematically describe the chips and cores from the well following procedures we have developed for the Hawaii Scientific Drilling Program and make an initial petrographic and geochemical characterization of the core and chips for this one year project.
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Collaborative Research: Taking the Pulse of the Northwest Hawaiian Ridge: Implications for Flux Variations and Mid-Cenozoic Pacific Plate Motions
  • 批准号:
    1834758
  • 项目类别:
    Standard Grant
  • 资助金额:
    $27.14万
  • 财政年份:
    2018
  • 负责人:
    Michael Garcia
  • 依托单位:
Using Loihi Basaltic Rocks to Understand the Hawaiian Plume
  • 批准号:
    1737284
  • 项目类别:
    Standard Grant
  • 资助金额:
    $20.99万
  • 财政年份:
    2017
  • 负责人:
    Michael Garcia
  • 依托单位:
Uncovering Hotspot Volcanism: Mantle Melting, Magmatic Plumbing, Explosive Eruptions and Crustal Contamination at Kilauea Volcano, Hawaii
  • 批准号:
    1449744
  • 项目类别:
    Continuing Grant
  • 资助金额:
    $36.0万
  • 财政年份:
    2015
  • 负责人:
    Michael Garcia
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Ni Systematics in Olivine as Fingerprints of Magmatic Processes in Hawaiian Basalts
  • 批准号:
    1347915
  • 项目类别:
    Standard Grant
  • 资助金额:
    $16.72万
  • 财政年份:
    2014
  • 负责人:
    Michael Garcia
  • 依托单位:
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