ログイン
言語:

WEKO3

  • トップ
  • ランキング
To
lat lon distance
To

Field does not validate



インデックスリンク

インデックスツリー

メールアドレスを入力してください。

WEKO

One fine body…

WEKO

One fine body…

アイテム

  1. 学術雑誌論文等

Low-temperature, high-stress deformation of olivine under water-saturated conditions

https://hiroshima.repo.nii.ac.jp/records/2008645
https://hiroshima.repo.nii.ac.jp/records/2008645
7eb43a3d-954c-4754-8b0c-08b608a09db4
名前 / ファイル ライセンス アクション
PhysEarthPlanetInter_168_125.pdf PhysEarthPlanetInter_168_125.pdf (4.2 MB)
Item type デフォルトアイテムタイプ_(フル)(1)
公開日 2023-03-18
タイトル
タイトル Low-temperature, high-stress deformation of olivine under water-saturated conditions
言語 en
作成者 Katayama, Ikuo

× Katayama, Ikuo

en Katayama, Ikuo

Search repository
Karato, Shun-ichiro

× Karato, Shun-ichiro

en Karato, Shun-ichiro

Search repository
アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
権利情報
権利情報 Copyright (c) 2008 Elsevier B.V.
主題
主題Scheme Other
主題 rheology
主題
主題Scheme Other
主題 flow law
主題
主題Scheme Other
主題 Peierls stress
主題
主題Scheme Other
主題 olivine
主題
主題Scheme Other
主題 water
主題
主題Scheme NDC
主題 450
内容記述
内容記述 Low-temperature high-stress rheology of olivine was investigated under water-saturated conditions by large strain shear deformation experiments using the Griggs-type apparatus. Samples at T = 1273-1373 K and P = 2 GPa under water-saturated conditions deformed under a significantly lower applied stress than expected from the power-law relation and the strain rate increases more rapidly with stress. These observations suggest that an exponential flow law operates under the present experimental conditions, in which the stress dependence of activation enthalpy is characterized by the Peierls stress. The Peierls stress is determined between 1.6 and 2.9 GPa depending on the choice of the form of stress-dependence of the activation enthalpy. These values are significantly smaller than the Peierls stress under dry conditions (9.1 GPa). We suggest that water (hydrogen) incorporated in the olivine lattices decreases the Peierls stress, and hence the rate of deformation in the exponential creep is significantly enhanced by the presence of water. The reduction of the Peierls stress by water results in the highly anisotropic weakening effect of water that causes the fabric transitions in olivine. The transition between the power-law and the exponential creep occurs at relatively low stress ~100 MPa at a geologically relevant strain rate of 10-15 s-1 when temperature is lower than 1273 K and under water-rich conditions. Hence the exponential creep might be dominated in olivine-rich rocks at low temperature and high stress under water-rich conditions, and such regions could be widespread in the subduction zone upper mantle where the cold lithospheric plates sink into the mantle.
言語 en
出版者
出版者 Elsevier Science BV
言語
言語 eng
資源タイプ
資源タイプ識別子 http://purl.org/coar/resource_type/c_6501
資源タイプ journal article
出版タイプ
出版タイプ AO
出版タイプResource http://purl.org/coar/version/c_b1a7d7d4d402bcce
関連情報
識別子タイプ DOI
関連識別子 10.1016/j.pepi.2008.05.019
関連情報
識別子タイプ DOI
関連識別子 http://dx.doi.org/10.1016/j.pepi.2008.05.019
収録物識別子
収録物識別子タイプ ISSN
収録物識別子 0031-9201
収録物識別子
収録物識別子タイプ NCID
収録物識別子 AA00773963
開始ページ
開始ページ 125
書誌情報 Physics of the Earth and Planetary Interiors
Physics of the Earth and Planetary Interiors

巻 168, 号 3-4, p. 125-133, 発行日 2008-07
旧ID 25983
戻る
0
views
See details
Views

Versions

Ver.1 2025-02-21 04:30:23.681041
Show All versions

Share

Mendeley Twitter Facebook Print Addthis

Cite as

エクスポート

OAI-PMH
  • OAI-PMH JPCOAR 2.0
  • OAI-PMH JPCOAR 1.0
  • OAI-PMH DublinCore
  • OAI-PMH DDI
Other Formats
  • JSON
  • BIBTEX

Confirm


Powered by WEKO3


Powered by WEKO3