| Project/Area Number |
11440155
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| Research Category |
Grant-in-Aid for Scientific Research (B).
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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 | Tohoku University |
|---|
Principal Investigator |
KUDOH Yasuhiro Tohoku University, Graduate School of Science, Associate Professor, 大学院・理学研究科, 助教授 (30107693)
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| Co-Investigator(Kenkyū-buntansha) |
KURIBAYASHI Takahiro Tohoku University, Graduate School of Science, Research Associate, 大学院・理学研究科, 助手 (20302086)
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| Project Period (FY) |
1999 – 2000
|
| Project Status |
Completed (Fiscal Year 2000)
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| Budget Amount *help |
¥9,300,000 (Direct Cost: ¥9,300,000)
Fiscal Year 2000: ¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1999: ¥7,300,000 (Direct Cost: ¥7,300,000)
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| Keywords | hydrous wadsloyite / hydrous ringwoodite / phlogopite / muscovite / phase A / chondrodite / Phase A / ヒューマイト族 / 体積弾性率 / 結晶構造 / 含水変型スピネル / 含水スピネル / 遷移帯 / 高圧下 |
|---|
| Research Abstract |
Structure and property of some hydrous phases whose stability field correspond to that of upper mantle of the earth have been studied. It was found that there is probably continuous solid solution between hydrous and anhydrous wadsleyite. Small degree of Mg-Si disorder was found in the structure of hydrous ringwoodite. With increasing pressure, shifts of OH-stretching vibration band to higher wave numbers were observed in phlogopite, while shifts of OH-stretching vibration band to lower wave numbers were observed in muscovite. Structural behaviors of phase A and chondrodite under pressure were found to be similar to that of forsterite.
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