Work

Publications

• Hiraga T (1999) Observation of grain boundaries in rocks by high-resolution electron microscopy (Japanese with English abstract). Journal of Geography. 108: 110-121
• Hiraga T, Nagase T, Akizuki M (1999) The structure of grain boundaries in granite-origin ultramylonite studied by high-resolution electron microscopy. Physics and Chemistry of Minerals 26:617-623
• Masuda T, Hiraga T, Ikei H, Kanda H, Kugimiya Y, Akizuki M (2000) Plastic deformation of quartz at room temperature: a Vickers nano-indentation test. Geophysical Research Letters 27:2773-2776
• Hiraga T, Nishikawa O, Nagase T, Akizuki M (2001) Morphology of intergranular pores and wetting angles in pelitic schists studied by transmission electron microscopy. Contributions to Mineralogy and Petrology 141:613-622
• Hiraga T, Nishikawa O, Nagase T, Akizuki M, Kohlstedt DL (2002) Interfacial energies for quartz and albite in pelitic schists. Contributions to Mineralogy and Petrology 143:664-672
• Mei S, Bai W, Hiraga T, Kohlstedt DL (2002) Influence of melt on the creep behavior of olivine-basalt aggregates under hydrous conditions. Earth and Planetary Science Letters 201:491-507
• Hiraga T, Anderson IM, Zimmerman ME, Mei S, Kohlstedt DL (2002) 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
• Hiraga T, Anderson IM, Kohlstedt DL (2003) Chemistry of grain boundaries in mantle rocks. American Mineralogist 88: 1015-1019
• Holtzman BK, Kohlstedt DL, Zimmerman ME, Heidelbach F, Hiraga T, Hustoft J (2003) Melt segregation and strain partitioning: implications for seismic anisotropy and mantle flow. Science 301: 1227-1230
• Hiraga T, Anderson IM, Kohlstedt DL (2004) Grain boundaries as reservoirs of incompatible elements in the Earth's mantle. Nature 427: 699-703
• Wang Z, Hiraga T, Kohlstedt DL (2004) Effect of hydrogen on Fe-Mg interdiffusion in olivine. Applied Physics Letters 85: 209-211
• Jung H, Katayama I, Jiang Z, Hiraga T, Karato S (2006) Effect of water and stress on the lattice preferred orientation. Tectonophysics 421: 1-22
• Chen S, Hiraga T, Kohlstedt DL (2006) Water weakening of clinopyroxene in the dislocation creep regime. Journal of Geophysical Research 111: B0820310.1029/2005JB003885
• Hiraga T, Kohlstedt DL (2007) Equilibrium interface segregation in the diopside-forsterite system I: Analytical techniques, thermodynamics, and segregation characteristics. Geochimica et Cosmochimica Acta 71: 1266-1280
• Hiraga T, Hirschmann MM, Kohlstedt DL (2007) Equilibrium interface segregation in the diopside-forsterite system II: Applications of interface enrichment to mantle geochemistry. Geochimica et Cosmochimica Acta 71: 1281-1289
• Goergen, E., Whitney, D.L., Zimmerman, M.E. and Hiraga, T. (2008) Deformation-induced polymorphic transformation: experimental deformation of kyanite,
  andalusite, and sillimanite. Tectonophysics. 454: 23-35
• Hiraga, T., Kohlstedt, D.L.(2009) Systematic distribution of incompatible elements in mantle peridotite: Importance of intra- and inter-granular melt-like
  components. Contrib. Mineral. Petrol. 158: 149-167

Awards

• 2000 JSPS Postdoctoral Fellowship for Research Abroad
• 2002 JSPS Postdoctoral Fellowship for Research
• 2004 Gibson Postdoctoral Research Fellowship, Department of Geology and Geophysics, University of Minnesota
• 2004 Young researcher award of the Japanese Association of Mineralogists, Petrologists and Economic Geologists

Service

• Reviewer for American Mineralogists, Physics and Chemistry of Minerals, Proceedings of the National Academy of Sciences, Microscopy and Microanalysis, Geochimica et Cosmochimica Acta, Lithos, Journal of Petrology, European Journal of Mineralogy and Journal of Mineralogical and Petrological Sciences.

Society membership

• Mineralogical Society of America , American Geophysical Union, Japan Institute of Metals, The Japanese Association of Mineralogists, Petrologists, and Economic Geologists

Invited and Seminar talks

• Earthquake Research Institute, Tokyo University (9/6/02)
• American Geophysical Union, Tectonophysics Section (12/6/02)
• Tohoku University (7/17/03)
• Osaka University (10/5/03)
• Yale University (12/1/03)
• Woods Hole Oceanographic Institute (12/2/03)
• American Geophysical Union, Tectonophysics Section (12/10/03)
• University of Montpellier (7/22/04)
• Brown University (11/4/04)
• University of Minnesota (12/5/04)
• Rice University (9/15/05)
• University of Colorado (2/22,23/06)
• Kyushu University (3/27/07)