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Takei・Hiraga Lab

東京大学 地震研究所 物質科学研究部門
武井・平賀研究室

 本研究グループでは、固液複合系および鉱物多結晶体としての「地球」を明らかにするため、アナログ変形実験・理論モデルの構築・高温クリープ実験・化学分析・種々の微細構造解析法を用いて研究を行っています。


Publication (平賀)

Maruyama, G., Hiraga, T., Grain- to multiple-grain-scale deformation processes during diffusion creep of forsterite + diopside aggregate II: Grain-boundary-sliding induced grain rotation and its role in crystallographic preferred orientation in rocks, J. Geophys. Res, DOI: 10.1002/2017JB014255, 2017

Maruyama, G., Hiraga, T., Grain- to multiple-grain-scale deformation processes during diffusion creep of forsterite + diopside aggregate I: Direct observations, J. Geophys. Res, DOI: 10.1002/2017JB014254, 2017

平賀 岳彦, 岩石 vs ファインセラミックス, 地質学雑誌, 123, 379-390, 2017

Koizumi, S., Suzuki, T.S., Sakka, Y., Yabe K., Hiraga, T., Synthesis of crystallographically oriented olivine aggregates using colloidal processing in a strong magnetic field, Physics and Chemistry of Minerals, 43, DOI: 10.1007/s00269-016-0826-5, 2016


Tasaka, M., Hiraga, T. and Michibayashi, K., Influence of mineral fraction on the rheological properties of forsterite + enstatite during grain size sensitive creep: 3 Application of grain growth and flow laws on peridotite ultramylonite, J. Geophys. Res., DOI:10.1002/2013JB010619, 2014.

Tasaka, M. and Hiraga, T. , Influence of mineral fraction on the rheological properties of forsterite + enstatite during grain size sensitive creep 1: Grain size and grain growth laws. , J. Geophys. Res., 118, DOI: 10.1002/jgrb.50285, 2013.

Tasaka, M., Hiraga, T. and Zimmerman, M.E. , Influence of mineral fraction on the rheological properties of forsterite + enstatite during grain size sensitive creep 2: Deformation experiments, J. Geophys. Res., 118, DOI: 10.1002/jgrb.50284, 2013.

Hiraga, T., Miyazaki, T. Yoshida, H. and Zimmerman, M.E., Comparison of microstructures in superplastically deformed synthetic materials and natural mylonites: Mineral aggregation via grain boundary sliding, Geology, 41, 9, 959-962, 2013.

Miyazaki, T., Sueyoshi, K. and Hiraga T., Olivine crystals align during diffusion creep of Earth’s upper mantle, Nature, 502, 321-326, 2013.

平賀岳彦、渡部泰史、宮崎智詞, 粒間流体の実態, 地球化学, 46, 231-242, 2012.

McCarthy, C., Y. Takei, Y. and T. Hiraga, Experimental study of attenuation and dispersion over a broad frequency range: 2. The universal scaling of polycrystalline materials., J. Geophys. Res., 116, doi:10.1029/2011JB008384, 2011.

Hiraga, T., Tachibana, C., Ohashi, N. and Sano, S., Grain growth systematics for forsterite ± enstatite aggregates: effect of lithology on grain size in the upper mantle, Earth Planet. Sci. Lett., 291, 10-20, 2010.

Koizumi, S., Hiraga, T., Tachibana, C.,Tasaka, M., Miyazaki, T., Kobayashi, T., Takamasa, A., Ohashi, N. and Sano, S., Synthesis of highly dense and fine-grained aggregates of mantle composites by vacuum sintering of nano-sized mineral powders, Physics and Chemistry of Minerals, 37, 505-518, 2010.

Hiraga, T., T. Miyazaki, T., M. Tasaka and H. Yoshida, Mantle superplasticity and its self-made demise, Nature, 468, 1091-1095, 2010.

Hiraga, T. and Kohlstedt, D.L., Systematic distribution of incompatible elements in mantle peridotite: Importance of intra- and inter-granular melt-like components, Contrib. Mineral. Petrol., 158, 149-167, 2009.

Goergen, E., Whitney, D.L., Zimmerman, M.E. and Hiraga, T., Deformation-induced polymorphic transformation: experimental deformation of kyanite, andalusite, and sillimanite, Tectonophysics, 454, 23-35, 2008.

Hiraga, T., Hirschmann, M.M. and Kohlstedt, D.L., Equilibrium interface segregation in the diopside-forsterite system II: Applications of interface enrichment to mantle geochemistry. , Geochimica et Cosmochimica Acta, 71, 1281-1289, 2007.

Hiraga, T., Kohlstedt, D.L., Equilibrium interface segregation in the diopside-forsterite system I: Analytical techniques, thermodynamics, and segregation characteristics, Geochimica et Cosmochimica Acta, 71, 1266-1280, 2007.

Jung, H., Katayama, I., Jiang, Z., Hiraga, T. and Karato, S., Effect of water and stress on the lattice preferred orientation. , Tectonophysics, 421, 1-22, 2006.

Chen, S., Hiraga, T. and Kohlstedt, D.L. , Water weakening of clinopyroxene in the dislocation creep regime. , J. Geophys. Res., 111, B8, B08203, 2006.

Hiraga, T., Anderson, I.M. and Kohlstedt, D.L., Grain boundaries as reservoirs of incompatible elements in the Earth's mantle. , Nature, 427, 699-703, 2004.

Wang, Z., Hiraga, T. and Kohlstedt, D.L., Effect of hydrogen on Fe-Mg interdiffusion in olivine. , Applied Physics Letters, 85, 209-211, 2004.

Hiraga, T., Anderson, I.M. and Kohlstedt, D.L. , Chemistry of grain boundaries in mantle rocks., American Mineralogist, 88, 1015-1019, 2003.

Holtzman, B.K., Kohlstedt, D.L., Zimmerman, M.E., Heidelbach, F., Hiraga, T. and Hustoft,J., Melt segregation and strain partitioning: implications for seismic anisotropy and mantle flow., Science, 301, 1227-1230, 2003.

Hiraga, T., Nishikawa, O., Nagase, T., Akizuki, M. and Kohlstedt, D.L., Interfacial energies for quartz and albite in pelitic schists., Contributions to Mineralogy and Petrology, 143, 664-672, 2002.

Mei, S., Bai, W., Hiraga, T. and Kohlstedt, D.L. , Influence of melt on the creep behavior of olivine-basalt aggregates under hydrous conditions., Earth Planet. Sci. Lett., 201, 491-507, 2002.

Hiraga, T., Anderson, I.M., Zimmerman, M.E., Mei, S. and Kohlstedt, D.L. , Structure and chemistry of grain boundaries in deformed, olivine + basalt and partially molten lherzolite aggregates: Evidence of melt-free grain boundaries. , Contributions to Mineralogy Petrology, 144, 163-175, 2002.

Hiraga, T., Nishikawa, O., Nagase, T. and Akizuki, M. , Morphology of intergranular pores and wetting angles in pelitic schists studied by transmission electron microscopy, Contributions to Mineralogy and Petrology, 141, 613-622, 2001.

平賀岳彦, 高分解能電子顕微鏡で見た岩石の粒界構造, 日本結晶学会誌, 43, 264, 2001.

Masuda, T., Hiraga, T., Ikei, H., Kanda, H., Kugimiya, Y. and Akizuki, M. , Plastic deformation of quartz at room temperature: a Vickers nano-indentation test. , Geophys. Res. Lett., 27, 2773-2776, 2000.

Hiraga, T., Nagase, T. and Akizuki, M., The structure of grain boundaries in granite-origin ultramylonite studied by high-resolution electron microscopy., Physics and Chemistry of Minerals, 26, 617-623, 1999.

平賀岳彦, 鉱物粒界の直視, 地学雑誌, 108, 110-121, 1999.

COntact

東京大学 地震研究所
物質科学研究部門
武井・平賀研究室

〒113-0032
東京都文京区弥生1-1-1 
東京大学地震研究所2号館

2号館404号室 武井 康子

2号館413号室 平賀 岳彦

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