Structural Controls on Magma Transport and Vertical Coupling in the Continental Lithosphere

大陆岩石圈岩浆输运和垂直耦合的构造控制

基本信息

项目摘要

An international field forum in Fiordland, New Zealand (April 26 to May 6, 2003) is providing members of the Solid Earth Science community with an opportunity to examine the mechanisms by which magma is generated, segregated and transported through continental crust and how these processes affect the mechanical evolution of the lithosphere. The Fiordland location is significant because few field sites allow geoscientists to examine directly structural and magmatic features that evolved simultaneously within large sections of the lower crust. Fiordland contains rare exposures of high-pressure migmatite and lower crustal structural features that formed at unusually deep levels of a Cretaceous mountain system (25-50 km paleodepths). The spectacular preservation of features at this site are stimulating new ideas and are providing a basis for evaluating the processes of melt generation and escape from the lower crust and how migrating magma interacts with deformation at the lithospheric scale. Specific issues addressed include: 1) evidence of rapidly evolving thermal and structural regimes in the lower crust and effects on lithosphere evolution; 2) evidence of fluid and melt sources and changing mechanisms of magma segregation and transport through the lower crust; 3) feedback mechanisms among crustal melting, granulite facies metamorphism and deformation; 4) effects of crustal melting and magmatism on vertical coupling/decoupling processes within the lithosphere; 5) flow patterns in natural lower crustal shear zones and their relationship to deformation and magma transport processes; 6) space-time controls on deformation partitioning and strain localization processes in the lower crust. The unique geologic setting of Fiordland allows 30 geoscientists to exchange current knowledge and new ideas that are well expressed by the geology of specific field sites. This project also partially supports 5-8 students and a post-doctoral associate to attend the meeting. The participation of young scientists provides opportunities for students to meet other geoscientists conducting research in the same or similar fields of interest, but with different expertise. It also allows them to interact with mature scientists and an opportunity to study some spectacularly exposed deep crustal processes.
2003年4月26日至5月6日在新西兰峡湾举行的国际野外论坛为固体地球科学界的成员提供了一个机会,以研究岩浆产生、分离和通过大陆地壳运输的机制,以及这些过程如何影响岩石圈的机械演化。峡湾的位置是重要的,因为很少有现场允许地球科学家直接检查结构和岩浆的特点,同时在下地壳的大部分演变。峡湾包含罕见的高压混合岩和下地壳结构特征,形成于白垩纪山脉系统的异常深的水平(25-50公里古深度)。在这个网站的壮观的保存功能是刺激新的想法,并提供了一个基础,评估过程中的熔体生成和逃离下地壳,以及如何迁移岩浆相互作用与变形在岩石圈尺度。具体内容包括:1)下地壳快速演化的热机制和构造机制及其对岩石圈演化的影响; 2)下地壳流体和熔体来源及其分异和迁移机制的变化; 3)地壳熔融、麻粒岩相变质和变形之间的反馈机制;(4)地壳熔融和岩浆活动对岩石圈垂直耦合/解耦过程的影响:(5)天然下地壳剪切带中的流动模式及其与变形和岩浆输运过程的关系;(6)下地壳变形分配和应变局部化过程的时空控制。峡湾独特的地质环境使30名地球科学家能够交流当前的知识和新的想法,这些知识和新的想法很好地表达了特定领域的地质情况。该项目还部分支持5-8名学生和一名博士后助理参加会议。青年科学家的参与为学生提供了机会,以满足其他地球科学家进行研究在相同或类似的领域的兴趣,但具有不同的专业知识。它还使他们能够与成熟的科学家进行互动,并有机会研究一些异常暴露的深部地壳过程。

项目成果

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Keith Klepeis其他文献

Keith Klepeis的其他文献

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{{ truncateString('Keith Klepeis', 18)}}的其他基金

Collaborative Research: Resolving Conflicting Models for the Laramide Orogeny and the Flat-Slab Paradigm in the Southern California Batholith
合作研究:解决拉拉米德造山运动模型与南加州基岩平板范式之间的冲突
  • 批准号:
    2138734
  • 财政年份:
    2022
  • 资助金额:
    $ 1.35万
  • 项目类别:
    Standard Grant
Collaborative Research: Strain localization, shear zone connectivity, and magma-deformation interactions by depth within a 65 km thick transpressional continental arc
合作研究:65公里厚的挤压大陆弧内按深度的应变局部化、剪切带连通性和岩浆变形相互作用
  • 批准号:
    1650183
  • 财政年份:
    2017
  • 资助金额:
    $ 1.35万
  • 项目类别:
    Continuing Grant
Collaborative Research: Time Scales and Dimensions of Rheological Heterogeneity and Fabric Evolution in the Lower Continental Crust during Extensional Orogenic Collapse
合作研究:伸展造山塌陷期间下陆壳流变异质性和结构演化的时间尺度和维度
  • 批准号:
    1119248
  • 财政年份:
    2011
  • 资助金额:
    $ 1.35万
  • 项目类别:
    Continuing Grant
Collaborative Research: Lithospheric Weakening, Deep Crustal Flow and the Initiation of Orogenesis at a Noncollisional Convergent Margin in the Andes
合作研究:安第斯山脉非碰撞汇聚边缘的岩石圈弱化、深部地壳流和造山作用的启动
  • 批准号:
    0635940
  • 财政年份:
    2007
  • 资助金额:
    $ 1.35万
  • 项目类别:
    Continuing Grant
Lower Crustal Deformation and Vertical Coupling and Decoupling in the Continental Lithosphere During Late Orogenic Extension
造山运动后期下地壳变形与大陆岩石圈垂直耦合与解耦合
  • 批准号:
    0337111
  • 财政年份:
    2004
  • 资助金额:
    $ 1.35万
  • 项目类别:
    Continuing Grant
The Evolution of a Convergent Orogen from Upper to Lower Crustal Levels
从上地壳层到下地壳层的汇聚造山带的演化
  • 批准号:
    0087323
  • 财政年份:
    2001
  • 资助金额:
    $ 1.35万
  • 项目类别:
    Standard Grant
Earth Sciences Postdoctoral Research Fellowship Award ,
地球科学博士后研究奖学金,
  • 批准号:
    9302678
  • 财政年份:
    1993
  • 资助金额:
    $ 1.35万
  • 项目类别:
    Fellowship Award

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Controls on explosive basaltic eruptions within the San Francisco Volcanic Field: Constraints from seismic imaging and multiphase magma ascent modeling
对旧金山火山场内爆炸性玄武岩喷发的控制:地震成像和多相岩浆上升模型的限制
  • 批准号:
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合作研究:阿拉斯加德纳利断层沿线的弧岩成体作用:断层可能控制沿长期走滑断层增量岩浆输送和聚集
  • 批准号:
    2120831
  • 财政年份:
    2021
  • 资助金额:
    $ 1.35万
  • 项目类别:
    Standard Grant
Collaborative Research: Arc plutonism along the Denali Fault, Alaska: Possible fault controls on incremental magma transport and assembly along a long-lived strike-slip fault
合作研究:阿拉斯加德纳利断层沿线的弧岩成体作用:断层可能控制沿长期走滑断层增量岩浆输送和聚集
  • 批准号:
    2121178
  • 财政年份:
    2021
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CAREER: Long-term Controls on Short-term Patterns of Magmatism: Towards a Unified Framework for Crustal Magma Transport
职业:对岩浆作用短期模式的长期控制:建立地壳岩浆输送的统一框架
  • 批准号:
    1848554
  • 财政年份:
    2019
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Elucidation of a nucleation and growth mechanism of nanocrystals in magma that controls explosiveness of volcanic eruption
阐明控制火山喷发爆炸性的岩浆中纳米晶体的成核和生长机制
  • 批准号:
    19K21048
  • 财政年份:
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Magma Structure and Anharmonicity Controls on Iron Isotopic Fractionation in Igneous Rocks
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Life Cycles of Basaltic Magma Mushes: The Dynamic Controls on Unlocking and Mixing
玄武岩浆糊的生命周期:解锁和混合的动态控制
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Collaborative Research: Windows of Opportunity: Exploring the Controls on the Depths of Eruption-forming Silicic Magma Bodies Using Improved Thermodynamics and Dynamics Models
合作研究:机会之窗:利用改进的热力学和动力学模型探索喷发硅质岩浆体深度的控制
  • 批准号:
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  • 财政年份:
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