Plastic Deformation and Deformation Fabric in Wadsleyite and Ringwoodite: Effects of Water and Grain-Size

瓦兹利石和尖木石中的塑性变形和变形织物:水和晶粒尺寸的影响

基本信息

  • 批准号:
    0105493
  • 负责人:
  • 金额:
    $ 41.5万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Continuing Grant
  • 财政年份:
    2001
  • 资助国家:
    美国
  • 起止时间:
    2001-08-01 至 2004-07-31
  • 项目状态:
    已结题

项目摘要

Karato 0105493 The interaction of convection currents in Earth's mantle with the mantle transition zone (410 to 660 km depth) affects the pattern of mantle circulation and hence evolution of this planet. This interaction depends strongly on the change in physical properties that occurs in the transition zone, particularly the rheological properties. To help understand the influence of rheological properties of transition zone materials on this interaction, the PI proposes to conduct experimental studies on plastic flow in transition zone minerals (wadsleyite and ringwoodite respectively) under the transition zone conditions with the emphasis on the effects of water and grain-size. Both grain-size and water can change significantly as convection currents go through the transition zone. The investigators will extend their previous studies into two new directions; (1) to investigate the effects of water on rheology and deformation fabric, and (2) to improve the quality of data by better-defined (constant strain-rate) deformation experiments and by stress measurements using the synchrotron radiation facility and transmission electron microscopy. These results will provide the first quantitative data set on the effects of water and grain-size on rheology and deformation fabric of major transition zone minerals and a firm basis for interpretation of seismic anisotropy in the transition zone.
卡拉托0105493地幔对流与地幔过渡带(深度410至660公里)的相互作用影响地幔环流的模式,从而影响这颗行星的演化。这种相互作用强烈地依赖于在过渡区发生的物理性质的变化,特别是流变性。为了帮助了解过渡带材料的流变性对这种相互作用的影响,PI建议在过渡带条件下对过渡带矿物(分别为水滑石和环木矿)中的塑性流动进行实验研究,重点是水和粒度的影响。当对流通过过渡区时,颗粒大小和水分都会发生显著变化。研究人员将把他们之前的研究扩展到两个新的方向:(1)调查水对流变学和变形织物的影响,以及(2)通过更好地定义(恒应变率)变形实验以及使用同步辐射设备和透射电子显微镜进行应力测量来提高数据质量。这些结果将首次提供水和粒度对主要过渡带矿物的流变学和变形组构影响的定量数据集,并为过渡带的地震各向异性解释提供坚实的基础。

项目成果

期刊论文数量(0)
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科研奖励数量(0)
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Shun-ichiro Karato其他文献

Properties and dynamics of mantle and core
地幔和地核的性质和动力学
  • DOI:
  • 发表时间:
    2008
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Bernhard Steinberger;Eiji Ohta ni;Geld Steinle-Neumann;Jame s Connolly;Shun-ichiro Karato
  • 通讯作者:
    Shun-ichiro Karato
Correction to: strength of single-crystal orthopyroxene under lithospheric conditions
  • DOI:
    10.1007/s00410-018-1458-1
  • 发表时间:
    2018-04-01
  • 期刊:
  • 影响因子:
    3.700
  • 作者:
    Tomohiro Ohuchi;Shun-ichiro Karato;Kiyoshi Fujino
  • 通讯作者:
    Kiyoshi Fujino
High-resolution mapping of North America suggests numerous low-velocity zones above and below the mantle transition zone
对北美洲的高分辨率测绘显示,在地幔过渡带上下存在众多低速带。
  • DOI:
    10.1016/j.tecto.2025.230775
  • 发表时间:
    2025-06-27
  • 期刊:
  • 影响因子:
    2.600
  • 作者:
    Steve A.B. Carr;Tolulope Olugboji;Jeffrey Park;Shun-ichiro Karato
  • 通讯作者:
    Shun-ichiro Karato
Pervasive low-velocity layer atop the 410-km discontinuity beneath the northwest Pacific subduction zone: Implications for rheology and geodynamics
  • DOI:
    https://doi.org/10.1016/j.epsl.2020.116642
  • 发表时间:
    2021
  • 期刊:
  • 影响因子:
  • 作者:
    Han Guangjie;Li Juan;Guo Guangrui;Walter D. Mooney;Shun-ichiro Karato;David A. Yuen
  • 通讯作者:
    David A. Yuen
Deep mantle melting, global water circulation and its implications for the stability of the ocean mass
  • DOI:
    10.1186/s40645-020-00379-3
  • 发表时间:
    2020-12-10
  • 期刊:
  • 影响因子:
    2.800
  • 作者:
    Shun-ichiro Karato;Bijaya Karki;Jeffrey Park
  • 通讯作者:
    Jeffrey Park

Shun-ichiro Karato的其他文献

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{{ truncateString('Shun-ichiro Karato', 18)}}的其他基金

Collaborative Research: CSEDI: Understanding the Role of Hydrogen and Melting in the Water Transport Across the Transition Zone-Lower Mantle Boundary
合作研究:CSEDI:了解氢和熔化在跨过渡带-下地幔边界的水传输中的作用
  • 批准号:
    2001339
  • 财政年份:
    2020
  • 资助金额:
    $ 41.5万
  • 项目类别:
    Standard Grant
Collaborative Research: Understanding the Origin of the mid-lithospheric discontinuity within a stable continent from a combined geophysics-mineral physics approach
合作研究:通过地球物理学-矿物物理学相结合的方法了解稳定大陆内岩石圈中部不连续性的起源
  • 批准号:
    1818792
  • 财政年份:
    2018
  • 资助金额:
    $ 41.5万
  • 项目类别:
    Standard Grant
CSEDI Collaborative Research: Understanding the nature of water transport between the transition zone and the lower mantle through the interdisciplinary studies
CSEDI合作研究:通过跨学科研究了解过渡带与下地幔之间的水运移本质
  • 批准号:
    1764271
  • 财政年份:
    2018
  • 资助金额:
    $ 41.5万
  • 项目类别:
    Continuing Grant
An experimental study on grain-size evolution during phase transformations in the mantle transition zone and its influence on rheological properties
地幔过渡带相变过程中晶粒尺寸演化及其对流变特性影响的实验研究
  • 批准号:
    1445356
  • 财政年份:
    2015
  • 资助金额:
    $ 41.5万
  • 项目类别:
    Continuing Grant
Experimental studies on plastic deformation of the lower mantle materials
下地幔材料塑性变形的实验研究
  • 批准号:
    1520006
  • 财政年份:
    2015
  • 资助金额:
    $ 41.5万
  • 项目类别:
    Continuing Grant
CSEDI Collaborative Research: Understanding the nature of water and melt transport between the transition zone and the lower mantle combining mineral physics and seismology
CSEDI合作研究:结合矿物物理和地震学了解过渡带和下地幔之间水和熔体传输的性质
  • 批准号:
    1464003
  • 财政年份:
    2015
  • 资助金额:
    $ 41.5万
  • 项目类别:
    Standard Grant
CSEDI Collaborative Research: Grand Challenge for Experimental Study of Plastic Deformation Under Deep Earth Conditions
CSEDI合作研究:深地条件下塑性变形实验研究的巨大挑战
  • 批准号:
    1361327
  • 财政年份:
    2014
  • 资助金额:
    $ 41.5万
  • 项目类别:
    Continuing Grant
CSEDI: Understanding the structure of the continental upper mantle through the use of magnetotelluric and seismic observations
CSEDI:通过使用大地电磁和地震观测了解大陆上地幔的结构
  • 批准号:
    1160932
  • 财政年份:
    2012
  • 资助金额:
    $ 41.5万
  • 项目类别:
    Standard Grant
An Experimental Study on the Strength of the Lithosphere: Large-strain shear deformation experiments of olivine + orthopyroxene aggregates
岩石圈强度的实验研究:橄榄石斜方辉石聚集体大应变剪切变形实验
  • 批准号:
    1214861
  • 财政年份:
    2012
  • 资助金额:
    $ 41.5万
  • 项目类别:
    Standard Grant
Experimental studies on rheological properties of transition zone minerals
过渡带矿物流变特性的实验研究
  • 批准号:
    1015336
  • 财政年份:
    2011
  • 资助金额:
    $ 41.5万
  • 项目类别:
    Continuing Grant

相似海外基金

EAGER: Analysis of the Depositional Fabric and Deformation Characteristics of Sands Using 3-D Computed X-Ray Tomography and DEM Simulation
EAGER:使用 3D 计算机 X 射线断层扫描和 DEM 模拟分析沙子的沉积结构和变形特征
  • 批准号:
    1853056
  • 财政年份:
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  • 资助金额:
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Coupled Deformation and Metamorphism, Fabric Development, Rheological Evolution and Strain Localization
耦合变形和变质、织物开发、流变演化和应变定位
  • 批准号:
    0440063
  • 财政年份:
    2005
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Relationship between the deformation textures and the AMS fabric of accretionary complex : An example from the Shimamoto Belt, Kochi, Japan.
变形纹理与增生复合体 AMS 结构之间的关系:以日本高知岛本带为例。
  • 批准号:
    16540417
  • 财政年份:
    2004
  • 资助金额:
    $ 41.5万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Deformation mechanisms, structure, microstructure and fabric
变形机制、结构、微观结构和织物
  • 批准号:
    7419-1997
  • 财政年份:
    2000
  • 资助金额:
    $ 41.5万
  • 项目类别:
    Discovery Grants Program - Individual
Deformation mechanisms, structure, microstructure and fabric
变形机制、结构、微观结构和织物
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  • 财政年份:
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变形机制、结构、微观结构和织物
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    7419-1997
  • 财政年份:
    1998
  • 资助金额:
    $ 41.5万
  • 项目类别:
    Discovery Grants Program - Individual
Deformation mechanisms, structure, microstructure and fabric
变形机制、结构、微观结构和织物
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  • 财政年份:
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织物、结构和变形机制
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  • 财政年份:
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织物、结构和变形机制
  • 批准号:
    7419-1992
  • 财政年份:
    1995
  • 资助金额:
    $ 41.5万
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    Discovery Grants Program - Individual
Fabric, structure and deformation mechanisms
织物、结构和变形机制
  • 批准号:
    7419-1992
  • 财政年份:
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