Evaluating the Role of Fluid and Melts in Mediating Element Recycling and Exhumation During Retrograde Metamorphism Following UHP Metamorphism

评估流体和熔体在超高压变质作用后逆行变质过程中介导元素回收和折返中的作用

基本信息

项目摘要

Nontechnical AbstractPlate tectonics introduces a feedback loop in which subduction of crustal material at convergent plate margins continually injects less dense rocks formed at the surface back into Earth's dense mantle. As this crustal material is subducted, it interacts with the mantle, exchanges elements, and continuously drives the geochemical evolution of Earth. In order to determine the effect of element recycling during the exhumation of subducted rocks, it is necessary to investigate the chemical reactions that occur during the exhumation of crustal rocks back to Earth's surface. Ultrahigh-pressure (UHP) terranes contain rocks that were carried down to mantle depths via subduction and then returned to the surface. Some of the rocks within UHP terranes preserve "pristine" mineral assemblages that equilibrated at mantle depths. Typically the outermost rind of these rocks contain new or "retrogressed" mineral assemblages that formed as the rocks were being exhumed to the surface. By comparing the chemistry of the "fresh" to the "retrogressed" UHP rocks, the chemical changes that are triggered by exhumation will be examined and their impact upon the geochemical evolution of Earth will be assessed.Technical AbstractMass transfer within subduction zones remains poorly understood. In particular, there is limited knowledge of the P-T conditions at which elemental recycling occurs and of what transporting agents drive the elemental-recycling processes. Many field-based studies have focused upon exhumed high-pressure and ultrahigh-pressure (UHP) terranes to better understand the devolatilization reactions and products that occur along the prograde path as crustal rocks are subducted deep within Earth. In contrast, the retrograde reactions that transpire during the exhumation of these deeply subducted rocks have largely been ignored despite the fact that peak temperatures generally occur along the retrograde path and devolatilization and melting reactions are common. Retrograde metamorphic reactions and associated mass transfer may thus have a great influence on elemental-recycling processes in subduction zones and may also dictate the nature of the exhumation processes that bring crustal material from UHP depths to the surface. This integrated field and laboratory study of the Western Gneiss Region will reveal whether large-scale elemental recycling occurs during retrogression of UHP crustal rocks and whether these processes influence the rates and mechanisms by which UHP terranes are exhumed back to Earth's surface.
非技术摘要板块构造引入了一个反馈回路,其中会聚板块边缘的地壳物质俯冲不断地将表面形成的密度较低的岩石注入地球致密的地幔中。当这种地壳物质俯冲时,它与地幔相互作用,交换元素,并不断驱动地球的地球化学演化。为了确定俯冲岩石折返过程中元素循环的影响,有必要研究地壳岩石折返到地球表面过程中发生的化学反应。超高压(UHP)地体含有的岩石通过俯冲作用被带到地幔深处,然后返回地表。超高压地体中的一些岩石保留了在地幔深处达到平衡的“原始”矿物组合。通常,这些岩石的最外层含有新的或“退化的”矿物组合,这些矿物组合是在岩石被挖掘到地表时形成的。通过比较“新鲜”和“退化”超高压岩石的化学成分,将检查折返引发的化学变化,并评估它们对地球地球化学演化的影响。技术摘要俯冲带内的质量传递仍然知之甚少。特别是,对于元素回收发生的 P-T 条件以及驱动元素回收过程的运输介质的了解有限。许多实地研究都集中在挖出的高压和超高压(UHP)地体上,以更好地了解当地壳岩石在地球深处俯冲时沿前进路径发生的脱挥发分反应和产物。相比之下,尽管峰值温度通常沿着逆行路径发生并且脱挥发分和熔化反应很常见,但在这些深俯冲岩石折返过程中发生的逆行反应在很大程度上被忽略了。因此,逆行变质反应和相关的质量传递可能对俯冲带的元素循环过程产生很大影响,也可能决定将地壳物质从超高压深度带到地表的折返过程的性质。这项对西部片麻岩地区的综合现场和实验室研究将揭示超高压地壳岩石退缩期间是否发生大规模元素循环,以及这些过程是否影响超高压地体被挖掘回地球表面的速率和机制。

项目成果

期刊论文数量(1)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Deformation-enhanced recrystallization of titanite drives decoupling between U-Pb and trace elements
钛矿的形变强化再结晶驱动 U-Pb 与微量元素之间的解耦
  • DOI:
    10.1016/j.epsl2021.116810
  • 发表时间:
    2021
  • 期刊:
  • 影响因子:
    5.3
  • 作者:
    Gordon, S.M.;Kirkland, C.L.;Reddy, S.M.;Blatchford, H.J.;Whitney, D.L.;Teyssier, C.;Evans, N.J.;McDonald, B.J.
  • 通讯作者:
    McDonald, B.J.
{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

数据更新时间:{{ journalArticles.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ monograph.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ sciAawards.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ conferencePapers.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ patent.updateTime }}

Stacia Gordon其他文献

Stacia Gordon的其他文献

{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

{{ truncateString('Stacia Gordon', 18)}}的其他基金

Conference: Participant Support for a GSA Penrose Conference on the North American Cordillera
会议:与会者对北美科迪勒拉山脉 GSA 彭罗斯会议的支持
  • 批准号:
    2310789
  • 财政年份:
    2023
  • 资助金额:
    $ 32.82万
  • 项目类别:
    Standard Grant
MRI: Acquisition of an electron probe microanalyzer for research and education in the mountain-west region
MRI:购买电子探针显微分析仪,用于西部山区的研究和教育
  • 批准号:
    2018647
  • 财政年份:
    2020
  • 资助金额:
    $ 32.82万
  • 项目类别:
    Standard Grant
Collaborative Research: Investigating the Relationships Between Magmatic 'Flare-Ups', Crustal Rheology, and Arc Collapse
合作研究:调查岩浆“爆发”、地壳流变学和弧塌陷之间的关系
  • 批准号:
    1945287
  • 财政年份:
    2020
  • 资助金额:
    $ 32.82万
  • 项目类别:
    Standard Grant
Collaborative Research: Record of UHP Terrain Exhumation Preserved in Shear Zones of the Western Gneiss Region (Norway)
合作研究:西部片麻岩地区剪切带保存的超高压地形剥露记录(挪威)
  • 批准号:
    1827198
  • 财政年份:
    2018
  • 资助金额:
    $ 32.82万
  • 项目类别:
    Standard Grant
Collaborative Research: Incorporation of Metasedimentary Rocks into the Deep Levels of Continental Arcs: Insights from the North Cascades
合作研究:将变沉积岩纳入大陆弧深层:来自北部喀斯喀特的见解
  • 批准号:
    1419810
  • 财政年份:
    2014
  • 资助金额:
    $ 32.82万
  • 项目类别:
    Standard Grant
Did Channel Flow Drive the Thermo-mechanical Evolution of the Eastern Himalaya? A Field-based Test in Northeast Bhutan
河道流驱动了喜马拉雅东部的热机械演化吗?
  • 批准号:
    1220300
  • 财政年份:
    2013
  • 资助金额:
    $ 32.82万
  • 项目类别:
    Continuing Grant
Melt-induced Buoyancy: The Driving Force for Fast UHP Exhumation?
熔化引起的浮力:快速超高压折返的驱动力?
  • 批准号:
    1019709
  • 财政年份:
    2010
  • 资助金额:
    $ 32.82万
  • 项目类别:
    Continuing Grant
EAGER: Collaborative Research: Continental Subduction and Deep Crustal Melting
EAGER:合作研究:大陆俯冲和深部地壳融化
  • 批准号:
    1041257
  • 财政年份:
    2010
  • 资助金额:
    $ 32.82万
  • 项目类别:
    Standard Grant
EAGER: Collaborative Research: Continental Subduction and Deep Crustal Melting
EAGER:合作研究:大陆俯冲和深部地壳融化
  • 批准号:
    1062187
  • 财政年份:
    2010
  • 资助金额:
    $ 32.82万
  • 项目类别:
    Standard Grant

相似海外基金

In the Driver's seat: role of trace elements in enabling crustal fluid flow
主导地位:微量元素在促进地壳流体流动中的作用
  • 批准号:
    DP220100500
  • 财政年份:
    2023
  • 资助金额:
    $ 32.82万
  • 项目类别:
    Discovery Projects
Role of active particles and solid-fluid interactions in interfacial fluid mechanics: a microfluidic approach
活性粒子和固液相互作用在界面流体力学中的作用:微流体方法
  • 批准号:
    RGPIN-2019-07186
  • 财政年份:
    2022
  • 资助金额:
    $ 32.82万
  • 项目类别:
    Discovery Grants Program - Individual
NSF Postdoctoral Fellowship in Biology FY 2021: Investigating the potential role of coral-associated microbes in regulating calcifying fluid chemistry
2021 财年 NSF 生物学博士后奖学金:研究珊瑚相关微生物在调节钙化液化学方面的潜在作用
  • 批准号:
    2109473
  • 财政年份:
    2022
  • 资助金额:
    $ 32.82万
  • 项目类别:
    Fellowship Award
Role of Ionic Composition and Interaction in Oil-Water-Rock Systems during Enhanced Oil Recovery Processes involving Low-Salinity Fluid and CO2 Injection
低矿化度流体和 CO2 注入提高采收率过程中油-水-岩石系统中离子组成和相互作用的作用
  • 批准号:
    RGPIN-2019-04841
  • 财政年份:
    2022
  • 资助金额:
    $ 32.82万
  • 项目类别:
    Discovery Grants Program - Individual
Role of macrophages in cerebrospinal fluid in the central mechanism of obesity-related hypertension
脑脊液中巨噬细胞在肥胖相关性高血压中枢机制中的作用
  • 批准号:
    21K08281
  • 财政年份:
    2021
  • 资助金额:
    $ 32.82万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Investigating the role of magnetic fields, instabilities and turbulence in fluid mixing
研究磁场、不稳定性和湍流在流体混合中的作用
  • 批准号:
    2606320
  • 财政年份:
    2021
  • 资助金额:
    $ 32.82万
  • 项目类别:
    Studentship
Role of Ionic Composition and Interaction in Oil-Water-Rock Systems during Enhanced Oil Recovery Processes involving Low-Salinity Fluid and CO2 Injection
低矿化度流体和 CO2 注入提高采收率过程中油-水-岩石系统中离子组成和相互作用的作用
  • 批准号:
    RGPIN-2019-04841
  • 财政年份:
    2021
  • 资助金额:
    $ 32.82万
  • 项目类别:
    Discovery Grants Program - Individual
Role of active particles and solid-fluid interactions in interfacial fluid mechanics: a microfluidic approach
活性粒子和固液相互作用在界面流体力学中的作用:微流体方法
  • 批准号:
    RGPIN-2019-07186
  • 财政年份:
    2021
  • 资助金额:
    $ 32.82万
  • 项目类别:
    Discovery Grants Program - Individual
The Role of Complement in Cerebrospinal Fluid Shunt Infections
补体在脑脊液分流感染中的作用
  • 批准号:
    9976246
  • 财政年份:
    2020
  • 资助金额:
    $ 32.82万
  • 项目类别:
Role of active particles and solid-fluid interactions in interfacial fluid mechanics: a microfluidic approach
活性粒子和固液相互作用在界面流体力学中的作用:微流体方法
  • 批准号:
    RGPIN-2019-07186
  • 财政年份:
    2020
  • 资助金额:
    $ 32.82万
  • 项目类别:
    Discovery Grants Program - Individual
{{ showInfoDetail.title }}

作者:{{ showInfoDetail.author }}

知道了