| Project/Area Number |
21540501
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Petrology/Mineralogy/Science of ore deposit
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| Research Institution | Japan Agency for Marine-Earth Science and Technology |
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Principal Investigator |
RAIMBOURG Hugues 独立行政法人海洋研究開発機構, 地球内部ダイナミクス領域, 招聘研究員 (40509709)
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| Co-Investigator(Kenkyū-buntansha) |
KOGURE Toshihiro 東京大学, 大学院・理学研究科, 准教授 (50282728)
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| Project Period (FY) |
2009 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2011: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2010: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2009: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
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| Keywords | 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 |
|---|
| Research Abstract |
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.
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