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Melt Generation and Transport Beneath Hawaii: Characterizing the Zero Age Plume

Melt Generation and Transport Beneath Hawaii: Characterizing the Zero Age Plume
夏威夷下方的融化生成和运输:描述零年龄羽流的特征
批准号:
9909473
负责人:
Kenneth Sims
金额:
$12.33万
依托单位国家:
美国
项目类别:
Standard Grant
财政年份:
2000
资助国家:
美国
项目状态:
已结题
起止时间:
2000-01-01 至 2003-12-31

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中文摘要
翻译
夏威夷群岛是地球上最活跃的地幔柱(“热点”)之一的地表表现。对来自夏威夷岛链的年轻玄武岩的u系列不平衡、主要和微量元素组成以及Nd和Sr同位素比值的测量将用于确定夏威夷羽流的融化条件。为此,我们将分析一组岩石,其中包括从夏威夷链的前缘延伸到尾端的火山熔岩,覆盖了夏威夷熔岩所展示的大部分地球化学范围。该项目的主要目标将是利用沿着岛链的“零年龄”时间片、u系列测量和融化的数值模型来表征从羽流核心到边缘的融化动力学变化。
英文摘要
SimsEAR-9909473The chain of Hawaiian Islands is the surface expression of one of the most active mantle plumes ('hot spots') on Earth. Measurements of U-series disequilibria, major and trace element compositions and Nd, and Sr isotopic ratios in young basalts from across the Hawaiian Island chain will be used to determine melting conditions in the Hawaiian plume. For that purpose, we will analyze a suite of rocks that include lavas from volcanoes that extend from the leading edge to the trailing end of the Hawaiian chain and cover most of the geochemical range exhibited by Hawaiian lavas. The main objective of this project will be to use this "zero age" time slice along the island chain, the U-series measurements, and numerical models of melting to characterize the change in melting dynamics from the core of the plume to its fringes.
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Collaborative Research: Understanding the Processes and Timescales of Basalt Petrogenesis and Oceanic Crustal Construction at Slow-Spreading Mid-Ocean Ridges
  • 批准号:
    2317704
  • 项目类别:
    Standard Grant
  • 资助金额:
    $32.58万
  • 财政年份:
    2023
  • 负责人:
    Kenneth Sims
  • 依托单位:
Collaborative Research: Volatile sources, eruption triggers, and magma ascent rates for mafic alkaline magmas at Nyiragongo and Nyamulagira volcanoes, DR Congo, East African Rift
  • 批准号:
    2043067
  • 项目类别:
    Standard Grant
  • 资助金额:
    $16.98万
  • 财政年份:
    2021
  • 负责人:
    Kenneth Sims
  • 依托单位:
Collaborative Research: Determining Magma Storage Depths and Ascent Rates for the Erebus Volcanic Province, Antarctica Using Diffusive Water Loss from Olivine-hosted Melt Inclusion
  • 批准号:
    1644020
  • 项目类别:
    Standard Grant
  • 资助金额:
    $7.08万
  • 财政年份:
    2017
  • 负责人:
    Kenneth Sims
  • 依托单位:
Fe isotopes as a key to understanding fluid-rock processes during hydration of oceanic crust
  • 批准号:
    1634669
  • 项目类别:
    Standard Grant
  • 资助金额:
    $38.85万
  • 财政年份:
    2016
  • 负责人:
    Kenneth Sims
  • 依托单位:
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