2010 Fiscal Year Final Research Report
Study of microstructures and physical properties of partial molten peridotite under differential stress
| Project/Area Number |
20340120
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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 |
Solid earth and planetary physics
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| Research Institution | Okayama University |
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Principal Investigator |
YOSHINO Takashi Okayama University, 地球物質科学研究センター, 准教授 (30423338)
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| Co-Investigator(Kenkyū-buntansha) |
YAMAZAKI Daisuke 岡山大学, 地球物質科学研究センター, 准教授 (90346693)
YONEDA Akira 岡山大学, 地球物資科学研究センター, 准教授 (10262841)
KATSURA Tomoo 岡山大学, 地球物質科学研究センター, 教授 (40260666)
ITOU Eiji 岡山大学, 地球物質科学研究センター, 名誉教授 (00033259)
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| Project Period (FY) |
2008 – 2010
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| Keywords | アセノスフェア / 高圧 / 上部マントル / 部分熔融 / ペリドタイト / 塑性変形 / 微細組織 / 電気伝導度 |
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| Research Abstract |
In order to determine physical properties of partially molten peridotite, we renewed operation system of a DIA-type mutianvil press with deformation finction. We compared electrical conductivities of the partial molten peridotites under hydrostatic and shear stress conditions. Preliminary result suggested that the conductivity parallel to shear direction is one order of magnitude higher than that normal to the shear direction. This result is consistent with the conductivity anisotropy observed at top of the asthenosphere and suggests a presence of partial molten zone at that depth.
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[Journal Article] P-V-T relations of MgSiO_3 perovskite determined by in situ X-ray diffraction using a large-volume high-pressure apparatus.2009
Author(s)
T.Katsura, S.Yokoshi, K.Kawabe, A.Shatskiy, G.Manthilake, S.Zhai, H.Fukui, T.Yoshino, D.Yamazaki, T.Matsuzaki, A.Yoneda, E.Ito
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Journal Title
Geophysical Research Letters Vol.36
Pages: L01305
Peer Reviewed
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