Collaborative Research: Magma-Host Rock Interaction Processes of Assimilation in the Mid-Crustal Hortavaer Intrusive Complex, North Central Norway

合作研究:挪威中北部中地壳 Hortavaer 侵入杂岩中岩浆与宿主岩石同化的相互作用过程

基本信息

  • 批准号:
    0439698
  • 负责人:
  • 金额:
    $ 16.76万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Continuing Grant
  • 财政年份:
    2005
  • 资助国家:
    美国
  • 起止时间:
    2005-01-01 至 2008-12-31
  • 项目状态:
    已结题

项目摘要

The 456 Ma Hortavar intrusive complex is part of the Caledonian-age Bindal Batholith in north-central Norway. It consists of alkaline rocks emplaced as hundreds or thousands of dike-like bodies into diverse host rocks (migmatite, quartzite, marble, and calc-silicate gneiss). The range of the igneous rocks, from olivine gabbro through syenite, their chemical variation, and their carbon isotope signatures indicates that the magmas assimilated calc-silicate and silicate rocks in situ. Recognition of in situ assimilation at Hortavar makes it an ideal place to address the mechanisms that control interactions between magmas and their host rocks in the middle crust: Are host rocks assimilated en masse? Or are solids assimilated according to their ability to dissolve in the magma undergoing contamination? Alternatively, are host rocks partly melted first, with only the melt component assimilated? We will use integrated field and microanalytical methods to test the hypothesis that carbonate + silicate assimilation was important during early magma evolution, but that silicate assimilation dominated later evolution. Because carbonate assimilation in a closed system is ineffectual, we will also test the likelihood that such assimilation occurred in an open system. The research will involve an international team of faculty and students. It will provide all participants with a rich, collaborative venture in new cultural and academic environments. It will also involve collaboration with scientists and students from the Norwegian Geological Survey and the Norwegian University of Science and Technology, and a local middle school teacher and amateur geologist.
456 Ma Hortavar侵入杂岩是挪威中北部加里东时代Bindal基的一部分。它由碱性岩石组成,形成数百或数千个脉状体,嵌入不同的寄主岩石(混辉岩、石英岩、大理石和钙硅酸盐片麻岩)中。从橄榄辉长岩到正长岩的火成岩范围、化学变化特征和碳同位素特征表明岩浆对钙硅酸盐和硅酸盐岩具有原位同化作用。对Hortavar的原位同化作用的认识使其成为研究控制岩浆与中地壳寄主岩石之间相互作用机制的理想场所:寄主岩石是否整体同化?或者固体是根据它们在岩浆中溶解的能力被同化的?或者,寄主岩石是否先部分熔化,只吸收熔化部分?我们将采用综合野外和微观分析的方法验证碳酸盐岩+硅酸盐同化作用在岩浆早期演化中起重要作用,而硅酸盐同化作用在后期演化中起主导作用的假设。由于封闭系统中的碳酸盐同化是无效的,我们也将测试这种同化在开放系统中发生的可能性。这项研究将涉及一个由教师和学生组成的国际团队。它将在新的文化和学术环境中为所有参与者提供丰富的合作冒险。它还将涉及与挪威地质调查局和挪威科技大学的科学家和学生,以及当地一名中学教师和业余地质学家的合作。

项目成果

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Carol Frost其他文献

Carol Frost的其他文献

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{{ truncateString('Carol Frost', 18)}}的其他基金

Processes Influencing Critical Element Enrichment in Alkaline Magmatic Systems
影响碱性岩浆系统中关键元素富集的过程
  • 批准号:
    2042243
  • 财政年份:
    2021
  • 资助金额:
    $ 16.76万
  • 项目类别:
    Standard Grant
Late Archean Crustal Evolution of the Southern Wyoming Province
怀俄明州南部的晚太古代地壳演化
  • 批准号:
    9909260
  • 财政年份:
    2000
  • 资助金额:
    $ 16.76万
  • 项目类别:
    Standard Grant
Crustal Recycling Versus Crustal Addition: The Role of Underplated Tholeiitic Rocks in the Origin of Reduced, Rapakivi-Type Granites
地壳回收与地壳添加:底镀拉斑斑岩在还原拉帕基维型花岗岩起源中的作用
  • 批准号:
    9706237
  • 财政年份:
    1997
  • 资助金额:
    $ 16.76万
  • 项目类别:
    Standard Grant
Acquisition of a Thermal Ioniztion Mass Spectrometer
购买热电离质谱仪
  • 批准号:
    9601783
  • 财政年份:
    1996
  • 资助金额:
    $ 16.76万
  • 项目类别:
    Standard Grant
Processes of Isotopic Resetting in the Contact Aureole of the Laramie Anorthosite Complex
拉勒米斜长石杂岩接触环中同位素重置过程
  • 批准号:
    9218458
  • 财政年份:
    1993
  • 资助金额:
    $ 16.76万
  • 项目类别:
    Standard Grant
Upgrading of a Thermal Ionization Mass Spectrometer
热电离质谱仪的升级
  • 批准号:
    8916365
  • 财政年份:
    1990
  • 资助金额:
    $ 16.76万
  • 项目类别:
    Standard Grant
Processes of Granulite Formation and Their Geochemical Signatures: A Study in the Wind River and Laramie Mountains,Wyoming
麻粒岩形成过程及其地球化学特征:怀俄明州风河和拉勒米山的研究
  • 批准号:
    8707296
  • 财政年份:
    1987
  • 资助金额:
    $ 16.76万
  • 项目类别:
    Standard Grant
Geochemical and Petrologic Studies of the Amphibolite- Granulite Transition in Archean Rocks of the Wind River Mountains, Wyoming
怀俄明州风河山脉太古代岩石角闪岩-麻粒岩转变的地球化学和岩石学研究
  • 批准号:
    8408357
  • 财政年份:
    1984
  • 资助金额:
    $ 16.76万
  • 项目类别:
    Standard Grant
Acquisition of a Low-Cost Thermal Ionization Mass Spectrometer
购置低成本热电离质谱仪
  • 批准号:
    8408444
  • 财政年份:
    1984
  • 资助金额:
    $ 16.76万
  • 项目类别:
    Standard Grant
Graduate Fellowship Support Grant
研究生奖学金支持补助金
  • 批准号:
    8313140
  • 财政年份:
    1983
  • 资助金额:
    $ 16.76万
  • 项目类别:
    Fellowship Award

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