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.

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，并且它们的原子结构从共格到半共格，最后是非共格的，这取决于边界的取向差角。在出溶的辉石片层和基质Opx之间的两个（100）界面上发现了不对称的错配位错密度沿着，这可能是Opx晶体折叠的原因。

项目成果

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
• 期刊: Am. Mineral
• 作者: Inoue;S. and Kogure;T
• 通讯作者: T

Acoustic and mechanical properties of Nankai accretionary prism core samples

• DOI: 10.1029/2010gc003169
• 发表时间: 2011-04
• 期刊: Geochemistry
• 影响因子: 3.7
• 作者: H. Raimbourg;Y. Hamano;S. Saito;M. Kinoshita;A. Kopf

The role of compaction contrasts in sediments in decollement initiation in an accretionary prism

沉积物压实对比在吸积棱柱中滑脱起始中的作用

• DOI: 10.1016/j.margeo.2011.02.011
• 发表时间: 2011
• 期刊: Marine Geology
• 影响因子: 2.9
• 作者: Raimbourg;H.;Ujiie;K.;Kopf;A.;Hisamitsu;T.;Hamano;Y.;Saito;S.;Kinoshita;M.
• 通讯作者: M.

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
• 期刊: Tectonophysics
• 影响因子: 2.9
• 作者: Kameda;J.;Raimbourg;H.;Kogure;T.;et al.
• 通讯作者: et al.