Mechanisms of subgrain boundary development and grain size decrease in mylonite

糜棱岩亚晶界发育及晶粒细化机制

• 批准号: 21540501
• 负责人: RAIMBOURG Hugues
• 金额: $ 2.66万
• 依托单位: Japan Agency for Marine-Earth Science and Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21540501/
• 关键词: 岩石変形; マイロナイト; 細粒化; 粒界; 斜方輝石; TEM; EBSD; FIB; 結晶粒界; 転位; 化学組成; 走査型透過電子顕微鏡; 単斜輝石; 緑泥石; 輝石; 再結晶化; すべり褶曲; 透過電子顕微鏡; 電子後方散乱回折

The deformation structures of orthopyroxene(Opx) in mylonite rock from Hidaka Metamorphic belt have been investigated mainly using transmission electron microscopy(TEM). Low-angle grain boundaries with the b-axis as the rotation axes and almost parallel to the(001) plane of Opx are common and their atomic structure are varied from coherent to semi-coherent and finally incoherent, depending on the misorientation angle of the boundaries. Asymmetric misfit dislocation densities along the two(100) interfaces between exsolved augite lamella and host Opx were also found, which is probably the origin of the folding of the Opx crystal.

主要利用透射电子显微镜（TEM）研究了日高变质带糜棱岩中斜方辉石（Opx）的变形结构。以b轴为旋转轴且几乎平行于Opx的(001)面的小角度晶界是常见的，其原子结构从相干到半相干，最后是非相干，具体取决于晶界的取向差角。边界。还发现了沿出溶辉石片层和宿主 Opx 之间的两个（100）界面的不对称错配位错密度，这可能是 Opx 晶体折叠的起源。

项目成果

Crystal bending, subgrain boundaries development and recrystallization in orthopyroxene during granulite-facies deformation

麻粒岩相变形过程中斜方辉石的晶体弯曲、亚晶界发育和再结晶

• 影响因子: 3.5
• 作者: Raimbourg; H.
• 通讯作者: H.

Electron backscatter diffraction(EBSD) analyses of phyllosilicates in petrographic thin sections

岩相薄片中页硅酸盐的电子背散射衍射 (EBSD) 分析

• 发表时间: 2012
• 影响因子: 3.1
• 作者: Inoue; S.;Kogure; T.
• 通讯作者: T.

Electron backscatter diffraction (EBSD) analyses of phyllosilicates in petrographic thin sections

岩相薄片中页硅酸盐的电子背散射衍射 (EBSD) 分析

• DOI: 10.2138/am.2012.4061
• 发表时间: 2012
• 作者: Inoue; S.;Kogure; T
• 通讯作者: T

Acoustic and mechanical properties of Nankai accretionary prism core samples

南开吸积棱柱岩心样品的声学和力学特性

• 发表时间: 2011
• 作者: Raimbourg; H.
• 通讯作者: H.

Low-grade metamorphism around the down-dip limit of seismorgenic subduction zones : Example from an ancient accretionary complex in the Shimanto Belt, Japan

地震俯冲带下倾极限周围的低级变质作用：以日本四万十带的古代增生杂岩为例

• DOI: 10.1016/j.tecto.2011.02.010
• 发表时间: 2011
• 影响因子: 2.9
• 作者: Kameda; J.; Raimbourg; H.; Kogure; T.; et al.
• 通讯作者: et al.