A new approach to the study of metamorphic rocks by combining EPMA and EBSD
| Project/Area Number |
17K05705
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Petrology/Mineralogy/Economic geology
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| Research Institution | Nagoya University |
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Principal Investigator |
Enami Masaki 名古屋大学, 宇宙地球環境研究所, 名誉教授 (20168793)
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| Co-Investigator(Kenkyū-buntansha) |
纐纈 佑衣 名古屋大学, 環境学研究科, 講師 (20726385)
加藤 丈典 名古屋大学, 宇宙地球環境研究所, 准教授 (90293688)
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| Project Period (FY) |
2017-04-01 – 2021-03-31
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| Project Status |
Completed (Fiscal Year 2020)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2017: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Keywords | EPMA / EBSD / 変成岩 / 変形岩 / 温度ー圧力履歴 / 変形履歴 / 超高圧変成岩 / CPO / 定永閃石 / 加水反応 / 特異値分解法 / ざくろ石 / 変形作用 / 結晶成長 / グラニュライト / エクロジャイト / 結晶片岩 / 変形 |
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| Outline of Final Research Achievements |
The purpose of this study was to propose and validate a new method for studying metamorphic rocks by combining an electron probe microanalyzer (EPMA) and an electron backscatter diffraction (EBSD) system.
We will focus on the following topics: 1) Detection of polycrystalline garnet porphyroblast in eclogite, 2) deciphering the deformation characteristics during exhumation stage recorded by garnet porphyroblast in metamorphic rocks formed under various pressure-temperature conditions, and 3) elucidation of the formation process of amphibole grains, which occur as pseudomorphs after garnet and omphacite in amphibolitized eclogites. In particular, we discuss the reasons for the formation of Si-poor amphibole in SiO2-saturated rocks.
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| Academic Significance and Societal Importance of the Research Achievements |
電子線マイクロアナライザー (EPMA)と電子線後方散乱回折 (EBSD)装置は，それぞれ主に微小領域の化学組成分析および結晶方位解析を行うために広く活用されている．そして，これまでに広範囲の分野の研究に様々な貢献をしてきた．
従来は個別の研究目的に利用されることが多かったこれらを，組み合わせて利用した新しい研究例を，変成岩を研究対象として提唱すると同時に，この新たな研究手法の有効性を検証した．
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Report
(5 results)
Research Products
(34 results)
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[Journal Article] Fe–rich olivine from an andesite dike in Miocene Shitara volcanic rocks, central Japan: a revised relationship between Mg/Fe ratio and Raman spectrum in olivine2021
Author(s)
Enami, M., Nishii, A., Mouri, T., Tsuboi, M., & Kouketsu, Y.
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Journal Title
Journal of Mineralogical and Petrological Sciences
Volume: 116
Issue: 3
Pages: 113-120
DOI
NAID
ISSN
1345-6296, 1349-3825
Related Report
Peer Reviewed / Open Access
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[Journal Article] Petrological and mineralogical contrasts of basic lithologies between eclogite and non–eclogite units along the Kokuryo River of the Sanbagawa belt, Central Shikoku, Japan2020
Author(s)
Enami, M., Huang, S., Tsuboi, M., & Wakasugi, Y.
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Journal Title
Journal of Mineralogical and Petrological Sciences
Volume: 115
Issue: 6
Pages: 457-470
DOI
NAID
ISSN
1345-6296, 1349-3825
Related Report
Peer Reviewed / Open Access
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[Book] 鉱物・宝石の科学事典2019
Author(s)
日本鉱物科学会、宝石学会（日本）
Total Pages
664
Publisher
朝倉書店
ISBN
9784254162769
Related Report
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