Collaborative Research: Experimental Study of H, S, Cl, and F Partitioning Between Apatite, Fluid(s), and Melts: Applications to Magma Evolution and Volatile Component Exsolution

合作研究:磷灰石、流体和熔体之间 H、S、Cl 和 F 分配的实验研究:在岩浆演化和挥发性成分溶出中的应用

基本信息

  • 批准号:
    0836741
  • 负责人:
  • 金额:
    $ 14.22万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Continuing Grant
  • 财政年份:
    2009
  • 资助国家:
    美国
  • 起止时间:
    2009-02-01 至 2014-01-31
  • 项目状态:
    已结题

项目摘要

Intellectual merit. The volatile components water, carbon, sulfur, chlorine, and fluorine affect magma rheology and differentiation, control processes of volcanic degassing and eruption, and influence the dissolution and transport of magmatic components in fluids that cause metasomatism and hydrothermal mineralization. The degassing of magmatic volatiles from volcanoes also fundamentally affects the geochemistry of the atmosphere and oceans - thus influencing Earth's climate. The efficacy of these processes varies directly with the abundances of volatiles. Despite extensive study of magmatic volatile components via analyses of trapped silicate melt inclusions and hydrous minerals in volcanic and plutonic rocks, and complementary experimental and theoretical research, current knowledge of the behavior and abundances of volatiles is insufficient for accurate modeling of fluid processes during magma evolution. In particular, we must better understand when volatile-rich magmatic fluids first exsolve, how their compositions change during magma evolution, and how these fluids accumulate in the apices of magma chambers to control magmatic processes and volcanic activities. The ubiquitous mineral apatite [Ca5(PO4)3(OH,F,Cl)] contains fluorine, chlorine, and hydroxyl ions as essential constituents and may also contain trace- to major-element levels of sulfur. If we have quantitative knowledge of element partitioning, apatite potentially can be used to monitor volatile contents in the magmas from which it forms. The proposed investigation aims to provide that essential calibration information via controlled experiments and detailed analysis of run products formed at known pressure, temperature, and melt composition. The ultimate goal is to develop apatite as a geochemical tool for: (1) estimating magmatic volatile contents at various stages of melt evolution (not always represented by presence of primary melt inclusions), (2) tracking the behavior of volatile components during progressive magma evolution, (3) elucidating the role of magmatic fluids in processes of degassing and volcanic eruption, and (4) improving thermodynamic models that can predict these exchange processes and apply to natural systems.Broader Impacts. This project will likely result in development of powerful alternative methods for assessing magmatic volatile contents. The scientific results and their relevance to society will be conveyed to summer interns participating in an NSF-supported Research Experiences for Undergraduate students (REU) program at the American Museum of Natural History, and to teachers and the generall public via a lecture program (focused on volatiles and geologic processes) at the museum. The museum offers numerous other opportunities to share the results of scientific research with the public through electronic media in exhibition halls. The results will also be shared by training undergraduate students at the University of Maryland and by educating the public through an open-house event on Earth science at the University of Maryland.
智力上的优点。挥发性组分水、碳、硫、氯、氟等影响岩浆流变和分异,控制火山脱气和喷发过程,影响岩浆组分在流体中的溶解和迁移,从而引起交代作用和热液成矿作用。火山岩浆挥发物的脱气也从根本上影响大气和海洋的地球化学,从而影响地球的气候。这些过程的效力直接随挥发物的丰度而变化。尽管通过分析火山岩和深成岩中的硅酸盐熔体包裹体和含水矿物对岩浆挥发性组分进行了广泛的研究,并进行了补充性的实验和理论研究,但目前对挥发性组分的行为和丰度的了解不足以准确模拟岩浆演化过程中的流体过程。特别是,我们必须更好地了解富含挥发分的岩浆流体何时首次出溶,它们的成分在岩浆演化过程中如何变化,以及这些流体如何积聚在岩浆房的顶部以控制岩浆过程和火山活动。普遍存在的矿物磷灰石[Ca5(PO4)3(OH,F,Cl)]含有氟、氯和氢氧根离子作为基本成分,也可能含有痕量至主要元素水平的硫。 如果我们对元素分配有定量的了解,磷灰石就有可能被用来监测它所形成的岩浆中的挥发物含量。 拟议的调查旨在提供必要的校准信息,通过受控实验和详细分析运行产品在已知的压力,温度和熔体组成。最终目标是开发磷灰石作为地球化学工具,用于:(1)估算熔体演化各阶段岩浆挥发分含量(并不总是以原生熔融包裹体的存在为代表),(2)追踪岩浆渐进演化过程中挥发性组分的行为,(3)阐明岩浆流体在脱气和火山喷发过程中的作用,(4)改进热力学模型,使之能够预测这些交换过程并应用于自然系统。这一项目可能会导致开发评估岩浆挥发分含量的强有力的替代方法。科学结果及其与社会的相关性将传达给参加美国自然历史博物馆的NSF支持的本科生研究经验(REU)计划的暑期实习生,并通过博物馆的讲座计划(专注于挥发物和地质过程)向教师和公众提供。博物馆还提供了许多其他机会,通过霍尔斯的电子媒体与公众分享科学研究成果。还将通过在马里兰州大学培训本科生和通过在马里兰州大学举办地球科学开放日活动教育公众来分享成果。

项目成果

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James Webster其他文献

Higher vitamin K1 intakes are associated with lower subclinical atherosclerosis and lower risk for atherosclerotic vascular disease-related outcomes in older women
  • DOI:
    10.1007/s00394-025-03686-x
  • 发表时间:
    2025-05-03
  • 期刊:
  • 影响因子:
    4.300
  • 作者:
    Montana Dupuy;Liezhou Zhong;Simone Radavelli-Bagatini;Jack Dalla Via;Kun Zhu;Lauren C. Blekkenhorst;James Webster;Nicola P. Bondonno;Allan Linneberg;Carl Schultz;Wai Lim;Richard L. Prince;Jonathan M. Hodgson;Joshua R. Lewis;Marc Sim
  • 通讯作者:
    Marc Sim
Use of the Rand Structured Implicit Review Instrument for Quality of Care Assessment
  • DOI:
    10.1097/00000441-199304000-00005
  • 发表时间:
    1993-04-01
  • 期刊:
  • 影响因子:
  • 作者:
    Frank Lefevre;Joseph Feinglass;Paul R. Yarnold;Gary J. Martin;James Webster
  • 通讯作者:
    James Webster
Patients' perception of using a smartphone light source in the clinical environment
  • DOI:
    10.1038/s41415-020-1635-2
  • 发表时间:
    2020-06-12
  • 期刊:
  • 影响因子:
    2.300
  • 作者:
    Alice Cameron;James Webster;Tom W. M. Walker;Serryth D. Colbert
  • 通讯作者:
    Serryth D. Colbert
Evaluation of NHS dental uptake by nursing mothers for local authorities throughout England in 2016-2018
2016-2018 年英格兰各地地方当局对哺乳期母亲使用国家医疗服务体系(NHS)牙科服务情况的评估
  • DOI:
    10.1038/s41415-020-1703-7
  • 发表时间:
    2020-07-10
  • 期刊:
  • 影响因子:
    2.300
  • 作者:
    James Webster;David Landes
  • 通讯作者:
    David Landes
Development of a test methodology for the assessment of human impacts in sport
  • DOI:
    10.1016/j.proeng.2012.04.139
  • 发表时间:
    2012-01-01
  • 期刊:
  • 影响因子:
  • 作者:
    Ben Halkon;James Webster;Sean Mitchell;Martine Mientjes
  • 通讯作者:
    Martine Mientjes

James Webster的其他文献

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{{ truncateString('James Webster', 18)}}的其他基金

REU Site: Collaborative Research: Earth and Planetary Science and Astrophysics REU at the American Museum of Natural History in Collaboration with the City University of New York
REU 网站:合作研究:地球与行星科学和天体物理学 REU 与纽约市立大学合作在美国自然历史博物馆
  • 批准号:
    1460939
  • 财政年份:
    2015
  • 资助金额:
    $ 14.22万
  • 项目类别:
    Continuing Grant
Collaborative Research: Using Trace and Ore Elements to Track Volatile Behavior and Fluid Migration within Intermediate-silicic Magma Chambers
合作研究:利用痕量元素和矿石元素追踪中硅质岩浆室内的挥发行为和流体运移
  • 批准号:
    1219484
  • 财政年份:
    2012
  • 资助金额:
    $ 14.22万
  • 项目类别:
    Standard Grant
Support for Attendance by Early Career Geochemists and Petrologists to the Mineralogical Society of America Short Course on Sulfur in Magmas and Melts in August 2011
支持早期职业地球化学家和岩石学家参加 2011 年 8 月美国矿物学会举办的有关岩浆和熔体中硫的短期课程
  • 批准号:
    1135071
  • 财政年份:
    2011
  • 资助金额:
    $ 14.22万
  • 项目类别:
    Standard Grant
REU Site: Collaborative Research: Earth and Planetary Science and Astrophysics REU at the American Museum of Natural History in Collaboration With the City University of New York
REU 网站:合作研究:地球与行星科学和天体物理学 REU 与纽约市立大学合作在美国自然历史博物馆
  • 批准号:
    1004591
  • 财政年份:
    2010
  • 资助金额:
    $ 14.22万
  • 项目类别:
    Continuing Grant
REU Site: Collaborative Research: Earth and Planetary Science and Astrophysics REU at the American Museum of Natural History in Collaboration with the City University of New York
REU 网站:合作研究:地球与行星科学和天体物理学 REU 与纽约市立大学合作在美国自然历史博物馆
  • 批准号:
    0851362
  • 财政年份:
    2009
  • 资助金额:
    $ 14.22万
  • 项目类别:
    Standard Grant
Water Management MSc (Environmental Water Management option)
水管理理学硕士(环境水管理选项)
  • 批准号:
    NE/E522859/1
  • 财政年份:
    2006
  • 资助金额:
    $ 14.22万
  • 项目类别:
    Training Grant
REU Site: Collaborative Research: Earth and Planetary Science and Astrophysics REU at the American Museum of Natural History in Collaboration with the City University of New York
REU 网站:合作研究:地球与行星科学和天体物理学 REU 与纽约市立大学合作在美国自然历史博物馆
  • 批准号:
    0552583
  • 财政年份:
    2006
  • 资助金额:
    $ 14.22万
  • 项目类别:
    Continuing Grant
Experimental Investigation of H2O, Cl, CO2 and SO2 Solubilities in Rhyolite and Andesite Melts at Shallow Crustal Conditions
浅地壳条件下流纹岩和安山岩熔体中 H2O、Cl、CO2 和 SO2 溶解度的实验研究
  • 批准号:
    0308866
  • 财政年份:
    2003
  • 资助金额:
    $ 14.22万
  • 项目类别:
    Standard Grant
Geochemical Evolution and Mineralization of Felsic Liquids: The Function and Behavior of Volatiles, Fluxing Components, and Ore Metals During Late-Stage...
长英质液体的地球化学演化和矿化:后期阶段挥发物、熔剂成分和矿石金属的功能和行为...
  • 批准号:
    9725072
  • 财政年份:
    1998
  • 资助金额:
    $ 14.22万
  • 项目类别:
    Standard Grant
Chlorine in Mafic and Intermediate Melts and Associated Fluids: An Experimental Study
镁铁质和中间熔体及相关流体中的氯:实验研究
  • 批准号:
    9526622
  • 财政年份:
    1996
  • 资助金额:
    $ 14.22万
  • 项目类别:
    Standard Grant

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