Collaborative Research: Quantifying the Thermal History of Crustal Magma Storage Through Crystal Records and Numerical Modeling

合作研究:通过晶体记录和数值模拟量化地壳岩浆储存的热历史

基本信息

  • 批准号:
    1426858
  • 负责人:
  • 金额:
    $ 22.99万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Continuing Grant
  • 财政年份:
    2014
  • 资助国家:
    美国
  • 起止时间:
    2014-09-01 至 2018-08-31
  • 项目状态:
    已结题

项目摘要

The processes involved in formation and storage of magma within the Earth?s upper crust are of fundamental importance to understanding volcanoes and volcanic hazards. Previous NSF-supported research by two of the PIs showed that at Mount Hood, Oregon, only a small fraction (most likely less than 1%) of the total time that magma is stored underground is spent at high enough temperatures that would allow magma to be easily mobilized and erupted. Partial data sets for other volcanoes suggest that these conditions are widespread, but this remains to be tested. This new project will address the questions of whether magmas in general are subject to similar storage conditions as those seen at Mount Hood, and what are the fundamental controls on the processes of magma storage underneath volcanoes. The project will address these questions using geochemical measurements of crystals that grew beneath the surface and will provide information on the duration and temperature of magma storage. These results will be combined with advanced computer models of magma chambers to explore the interplay of magma addition, heat loss and changes in magma composition. In addition to contributions to the science of volcanology and geochemistry, the work will have impacts in understanding volcanic hazards ? in particular, the percentage of time that different magma bodies spend in an eruptible state (and, critically, the processes that control that percentage of time) will provide insight into the hazard represented by different volcanoes and will also provide a better context to interpret the results of seismic imaging or other remote-sensing applications. This project will contribute to training the next-generation STEM workforce by providing support for a postdoctoral researcher and three graduate students, one at each institution. At OSU and at UCD undergraduates will also take part in the research.This project will integrate observational data with numerical modeling for selected volcanic systems, to address the broader question: ?What are the thermal and physical conditions of magma storage in the Earth?s crust, and what are the primary controls on those conditions?? This project will build on our results for Mount Hood and on existing partial data sets by exploring two high-priority specific questions that pertain to the maturation of magmatic systems: 1) What is the role of volume of the shallow reservoir? How do magma storage conditions vary over erupted volumes of 1 to 10 km3? and 2) What is the role of composition? Is there a difference between the thermal history of magma storage in dacitic and rhyolitic systems? The results of this project will provide some of the first observational data on the thermal histories of magma storage, and the numerical modeling will allow us to put these results into a generalizable thermodynamic framework. These results will provide a critical, observation-based understanding of the physical conditions of magma storage, which in turn will provide a better understanding of magma reservoir processes. Ultimately we will build a framework in which to understand various aspects of crystal records such as the interpretation of mineral thermobarometry, textural information, and time scales captured by mineral zonation. The results of this project will have broad implications within the field of igneous petrology/geochemistry by providing a conceptual framework for the processes that operate within magma reservoirs ? and crucially, the time scales relevant to the different processes.
地球内部岩浆的形成和储存过程?火山的上地壳是了解火山和火山灾害的根本重要性。两个PI先前由NSF支持的研究表明,在俄勒冈州的胡德山,岩浆在地下储存的总时间中只有一小部分(很可能不到1%)是在足够高的温度下度过的,这将使岩浆很容易被动员和喷发。其他火山的部分数据集表明,这些条件是普遍存在的,但这仍有待检验。这个新项目将解决的问题是,岩浆是否在一般情况下受到类似的存储条件,如在胡德山看到的,以及什么是火山下的岩浆存储过程的基本控制。该项目将通过对地表下生长的晶体进行地球化学测量来解决这些问题,并将提供有关岩浆储存时间和温度的信息。这些结果将与先进的岩浆房计算机模型相结合,以探索岩浆添加,热损失和岩浆成分变化的相互作用。除了对火山学和地球化学科学的贡献外,这项工作还将对理解火山灾害产生影响。特别是,不同岩浆体处于可喷发状态的时间百分比(以及至关重要的是,控制这一时间百分比的过程)将有助于深入了解不同火山所代表的危险,并为解释地震成像或其他遥感应用的结果提供更好的背景。该项目将通过为每个机构的一名博士后研究员和三名研究生提供支持,为培训下一代STEM劳动力做出贡献。在俄勒冈州立大学和UCD的本科生也将参加研究。该项目将结合选定的火山系统的观测数据与数值模拟,以解决更广泛的问题:?岩浆在地球上储存的热条件和物理条件是什么?的地壳,以及对这些条件的主要控制是什么??该项目将建立在我们的结果胡德山和现有的部分数据集,通过探索两个高优先级的具体问题,涉及到岩浆系统的成熟:1)是什么作用的体积的浅储层?在1至10立方千米的喷发体积内,岩浆储存条件如何变化?(2)作文的作用是什么?英安质和流纹质系统中岩浆储存的热历史是否有差异?这个项目的结果将提供一些第一次观测数据的热历史的岩浆储存,和数值模拟将使我们能够把这些结果到一个概括的热力学框架。这些结果将提供一个关键的,基于观测的了解岩浆储存的物理条件,这反过来又将提供一个更好的了解岩浆库的过程。最终,我们将建立一个框架,以了解晶体记录的各个方面,如矿物温压,纹理信息的解释,并通过矿物环带捕获的时间尺度。这个项目的结果将有广泛的影响,在该领域的火成岩岩石学/地球化学提供了一个概念框架的过程中,岩浆水库?最重要的是,与不同过程相关的时间尺度。

项目成果

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Kari Cooper其他文献

Time scales and mechanisms of uranium uptake in altered ocean crust; observations from the ∼15 million year-old site 1256 in the eastern equatorial Pacific
  • DOI:
    10.1016/j.gca.2024.07.028
  • 发表时间:
    2024-10-01
  • 期刊:
  • 影响因子:
  • 作者:
    Morten B. Andersen;Joel B. Rodney;Heye Freymuth;Flurin Vils;Michelle Harris;Kari Cooper;Damon A.H. Teagle;Tim Elliott
  • 通讯作者:
    Tim Elliott

Kari Cooper的其他文献

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{{ truncateString('Kari Cooper', 18)}}的其他基金

Geochemical Insights Into the Post-Caldera Architecture of the Yellowstone Magma Reservoir
对黄石岩浆库火山口后建筑的地球化学见解
  • 批准号:
    2204816
  • 财政年份:
    2022
  • 资助金额:
    $ 22.99万
  • 项目类别:
    Continuing Grant
Collaborative research: Assessing changes in the state of a magma storage system over caldera-forming eruption cycles, a case study at Taupo Volcanic Zone, New Zealand
合作研究:评估火山口形成喷发周期中岩浆储存系统状态的变化,新西兰陶波火山区的案例研究
  • 批准号:
    1654506
  • 财政年份:
    2017
  • 资助金额:
    $ 22.99万
  • 项目类别:
    Continuing Grant
Collaborative Research: Recharge, Mixing and Eruption Triggering Mechanisms at Chaos Crags and 1915 Eruptions, Lassen Volcanic Center, California
合作研究:混沌峭壁和 1915 年火山喷发的补给、混合和喷发触发机制,拉森火山中心,加利福尼亚州
  • 批准号:
    1250305
  • 财政年份:
    2013
  • 资助金额:
    $ 22.99万
  • 项目类别:
    Standard Grant
Insights into the Development of Silicic Magma Reservoirs over Space and Time from Crystal-scale Trace-element and Isotopic Data and U-Th Datin
从晶体尺度微量元素、同位素数据和U-Th大数据洞察硅质岩浆储层时空发育
  • 批准号:
    1144945
  • 财政年份:
    2012
  • 资助金额:
    $ 22.99万
  • 项目类别:
    Standard Grant
Collaborative Research: Timescales of Crystal Residence and Magma Mixing at Mount Hood, Oregon
合作研究:俄勒冈州胡德山水晶住宅和岩浆混合的时间尺度
  • 批准号:
    0838389
  • 财政年份:
    2009
  • 资助金额:
    $ 22.99万
  • 项目类别:
    Continuing Grant
U-Series Crystal Ages and Implications for Magma Dynamics
U 系列晶体年龄及其对岩浆动力学的影响
  • 批准号:
    0738749
  • 财政年份:
    2008
  • 资助金额:
    $ 22.99万
  • 项目类别:
    Standard Grant
Collaborative Research: Understanding the Dynamics of Magmatic Processes in the Crust: A Case Study of Volcán Quizapu, Chile
合作研究:了解地壳中岩浆过程的动力学:以智利 Quizapu 火山为例
  • 批准号:
    0711354
  • 财政年份:
    2007
  • 资助金额:
    $ 22.99万
  • 项目类别:
    Standard Grant
SGER: Reconciling U-series Ages of Major and Accessory Phases
SGER:协调 U 系列主要阶段和附属阶段的年龄
  • 批准号:
    0649295
  • 财政年份:
    2006
  • 资助金额:
    $ 22.99万
  • 项目类别:
    Standard Grant
Collaborative Research: Timescales of Magmatic Differentiation and Crustal Assimilation Beneath Iceland: Combined U-Series and Oxygen Isotope Studies
合作研究:冰岛下方岩浆分异和地壳同化的时间尺度:结合 U 系列和氧同位素研究
  • 批准号:
    0714455
  • 财政年份:
    2006
  • 资助金额:
    $ 22.99万
  • 项目类别:
    Continuing Grant
Collaborative Research: Timescales of Magmatic Differentiation and Crustal Assimilation Beneath Iceland: Combined U-Series and Oxygen Isotope Studies
合作研究:冰岛下方岩浆分异和地壳同化的时间尺度:结合 U 系列和氧同位素研究
  • 批准号:
    0307691
  • 财政年份:
    2003
  • 资助金额:
    $ 22.99万
  • 项目类别:
    Continuing Grant

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