Study of microstructures and physical properties of partial molten peridotite under differential stress

差应力作用下部分熔融橄榄岩的显微结构与物性研究

• 批准号: 20340120
• 负责人: YOSHINO Takashi
• 金额: $ 11.98万
• 依托单位: Okayama University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20340120/
• 关键词: アセノスフェア; 高圧; 上部マントル; 部分熔融; ペリドタイト; 塑性変形; 微細組織; 電気伝導度; レオロジー; ペリドタイド; 変形実験; 異方性; 連結度; 差応力; 部分溶融; 高温高圧; 物性; 微細構造

In order to determine physical properties of partially molten peridotite, we renewed operation system of a DIA-type mutianvil press with deformation finction. We compared electrical conductivities of the partial molten peridotites under hydrostatic and shear stress conditions. Preliminary result suggested that the conductivity parallel to shear direction is one order of magnitude higher than that normal to the shear direction. This result is consistent with the conductivity anisotropy observed at top of the asthenosphere and suggests a presence of partial molten zone at that depth.

为了测定部分熔融橄榄岩的物理性质，我们对具有变形功能的DIA型多维压机的操作系统进行了更新。我们比较了部分熔融橄榄岩在静水应力和剪切应力条件下的电导率。初步结果表明，平行于剪切方向的电导率比垂直于剪切方向的电导率高一个数量级。该结果与在软流圈顶部观察到的电导率各向异性一致，表明在该深度存在部分熔融区。

项目成果

ELECTRICAL CONDUCTIVITY OF ENSTATITE UP TO 20 GPa AND 1600K

顽火辉石的电导率高达 20 GPa 和 1600K

• 期刊: CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
• 影响因子: 1.4
• 作者: Zhang Bao-Hua;Xu Jun-Shan;Yoshino, Takashi;Katsura, Tomoo;Wu Xiao-Ping
• 通讯作者: Wu Xiao-Ping

Electrical conductivity of mantle peridotite at the uppermost lower mantle condition

下地幔最上层条件下地幔橄榄岩的电导率

• 发表时间: 2010
• 期刊: J. Phys.: Conference Series
• 作者: Yoshino;T.;Katsura;T.;Yamazaki;D.;Ito;E.
• 通讯作者: E.

Texture of (Mg,Fe)SiO3 perovskite and ferro-periclase aggregate: Implications for rheology of the lower mantle

• DOI: 10.1016/j.pepi.2008.11.002
• 发表时间: 2009-05
• 期刊: Physics of the Earth and Planetary Interiors
• 影响因子: 2.3
• 作者: D. Yamazaki;T. Yoshino;Takuya Matsuzaki;T. Katsura;A. Yoneda

Well-wetted olivine grain boundaries in partial molten peridotites in the asthenosphere.

软流圈部分熔融橄榄岩中润湿的橄榄石晶界。

• 发表时间: 2009
• 期刊: Earth and Planetary Science Letters Vol.283
• 作者: T.Yoshino;D.Yamazaki;K.Mibe.
• 通讯作者: K.Mibe.

Electrical conductivity of fluid-bearing quartzite at high pressure and high temperature

高压高温下含流体石英岩的电导率

• 发表时间: 2010
• 作者: H.Yamazakii;H.Honma;T.Nagai;M.Doubell;K.Amakasu;M.Kumagai;増渕雄一;A.Shimojuku
• 通讯作者: A.Shimojuku