総合学術博物館准教授

専門分野

鉱物学

研究テーマ

・鉱物の組織形成の解明並びに組織解読による鉱物の生成過程について
・準安定相の核形成・成長過程とその出現要因について
・研究紹介

最近の主要論文

1. T. Nagase and M. Akizuki (1998): TEM observations of the disordered domain in marcasite from Ikezuki, Japan and Potosi, Bolivia. Internationa Mineralogical Association general meeting, Abstract and Program, A86.
2. Y. Kudoh, T. Nagase, H. Mizohata, E. Ohtani, S. Sasaki and M. Tanaka (1998): Possible sites for hydrogen in a new hydrous magnesium silicate phase G synthesized at 22 GPa and 1050 C. In M. Nakamura, Eds. Proceedings of International Conference - AIRAPT-16 and HPCJ-38 - on High Pressure Science and Technology, Rev. High Pressure Sci. Technol., 7, 134-136, The Japan Society of High Pressure Science and Technology.
3. Y. Kudoh, T. kuribayashi, T. Nagase, S. Sasaki and M. Tanaka (1998): Crystal structure of chondrodite at 5.5 GPa. KEK Progress Report, 98-3, 117.
4. E. Ohtani, H. Mizobata, Y. Kudoh, T, Nagase, H. Arashi, H. Yurimoto and I. Miyagi (1998): Reply. Geophys. Res. Lett., 25, 981-982 .
5. 大山次男・伊藤嘉紀・北風　嵐・長瀬敏郎・秋月瑞彦 (1998): 仙台市太白山産 クリストバライト，岩鉱，93(9)，344-346.
6. T. Hiraga, T. Nagase and M. Akizuki (1999): The structure of grain boundaries in granite-origin ultramylonite studied by high-resolution electron microscopy. Physics and Chemistry of Minerals, 36, 617-623.
7. T. Nagase, T. Nishihori, A. Kitakaze, M. Akizuki (1999): High resolution TEM observations of micro-texture in arsenopyrite, Geological Society of America annual meeting, Abstract and Program, A-400.
8. 小島晶二，長瀬敏郎（1999）: 準安定相の析出と溶液媒介相転移のカイネティクス，岩鉱，94巻，377-388．
9. 長瀬敏郎（2000）：準安定条件下で形成した鉱物の微細組織と微細構造，日本結晶学会誌，42，148-154．
10. 長瀬敏郎（2000）：結晶の外形から何がわかるか，日本結晶学会誌，42， 469-473．
11. T.Hiraga, O. Nishikawa, T.Nagase, M.Akizuki (2001): Morphology of intergranular pores and wetting angles in pelitic schists studied by transmission electron microscopy. Contrib. Mineral. Petrol. 141, 613-622.
12. M. Akizuki, T. Kuribayashi, T. Nagase, and A. Kitakaze (2001): Triclinic liddicaotite and elbaite in growth sectors from Madagascar. American Mineralogist, 86, 364-369.
13. T. Hiraga, O. Nishikawa, T. Nagase, M. Akizuki, D.L. Kohlstedt (2002) Interfacial energies for quartz and albite in pelitic schist, Contrib. Mineral. Petrol. 143, 664-672.
14. T. Nagase, M. Abiko, and Y. Kudoh (2002) Texture and morphology of submicron-sized quartz crystals with moganite synthesized by hydrothermal experiment, International Mineralogical Association general meeting, Abstract and Program, 115.
15. T. Kubo, E. Ohtani, T. Kondo, T. Kato, M. Toma, T. Hoaoya, A. Sano, T. Kikegawa, T. Nagase (2002) Metastable garnet in oceanic crust at the top of the lower mantle, Nature, 429, 803-806.
16. T. Nagase, M. Abiko, M. Tanaka (2002) Quantitative analyses of Brazil twin defects in chalcedony by X-ray powder diffraction method. KEK Progress Report 2002-2.
17. 宮本毅，中川光弘，大場司，長瀬敏郎，菅野均志，谷口宏充 (2002): 白頭山10世紀噴火の噴火推移，月刊地球，号外39，202-209．
18. K. Otsuki, N. Monzawa, T. Nagase (2003) Fluidization and melting of fault gouge during seismic slip: Identification in the Nojima fault zone and implications for focal earthquake mechanisms. Journal of Geophysical Research, 108(B4), 2192-2208.
19. H. Sasaki, A. Tanaka, Y. Kuriyama, T. Nagasawa, S. Suzuki, S. Sato, and T. Nagase (2004) Angle-resolved photoemission study of CoSi2 nanofilms grown on Si(111) substrates. Solid State Commun. 121, 91-95.
20. Asahara, Y., Ohtani, E., Kondo, T., Kubo, T., Miyajima, N., Nagase, T., Fujino, K., Yagi, T., and Kikegawa, T., 2005, Formation of metastable cubic-perovskite in high-pressure phase transformation of Ca(Mg,Fe,Al)Si2O6. Amer. Mineral., 90, 457-462.
21. Kobayashi, Y., Kondo, T., Ohtani, E., Hirao, N., Miyajima, N., Yagi, T., Nagase, T., and Kikegawa, T., 2005, Fe-Mg partitioning between (Mg, Fe)SiO3 post-perovskite, perovskite, and magnesiowuestite in the Earth's lower mantle. Geophys. Res. Lett., 32, L19301.
22. Kawasaki, M., Nagase, T., Onuma, K., Katsumata, T., Sunagawa, I., 2006, Appearance of basal faces in natural amethyst crystals from Four Peaks, Arizona. European Journal of Mineralogy, 18, 273-278.
23. The study of fine-grained interstice filling materials in chondrule and the fine-grained rim within Cold Bokkeveld chondrite by FIB-TEM/STEM. [Meteoritics & Planetary Science,42,(2007), A110] Miyahara M., Uehara S., Ohtani E., Nagase T. and Kitagawa R. ,
24. Miyahara M., Sakai T., Kobayashi Y., Ohtani E., Kondo T., Nagase T., Yoo J.-H., Nishijima M. and Vashaei Z.,　Application of FIB system to ultra-high pressure Earth science. Journal of Mineralogical and Petrological Sciences, 103,.88-93, 2008.
25. Miyahara M., El Goresy A., Ohtani E., Ozawa S., Nagase T. and Nishijima M., Fractional crystallization of olivine melt inclusions in a shock-induced chondritic melt vein.[Annual report of Bayerisches Forschungsinstitut fur Experimentelle Geochemie und Geophysik, Universitat Bayreuth,(2008),162-165]
26. Miyahara M., El Goresy A., Ohtani E., Nagase T., Nishijima M., Vashaei Z., Ferroir T., Gillet P., Dubrovinsky L. and Simionovici A., Evidence for fractional crystallization of wadsleyite and ringwoodite from olivine melts in chondrules entrained in shock-melt veins.[Proceedings of the National Academy of Sciences,105,(2008),8542-8547]
27. Miyahara M., Kimura M., Ohtani E., El Goresy A., Ozawa S., Nagase T. and Nishijima M., Further evidence for ubiquitous fractional crystallization of wadsleyite and ringwoodite from olivine melt.[Meteoritics & Planetary Science,43,(2008),A102]
28. Momma K., Nagase T., Kuribayashi T. and Kudoh Y. (2009) Computational simulations of the structure of Japanese twin boundaries in quartz, Eur. J. Mineral., 21 373-383.
29. Miyahara, M., El Goresy, A., Ohtani, O., Kimura, M., Ozawa, S., Nagase, T., Nishijima, M., (2009) Fractional crystallization of olivine melt inclusion in shock-induced chondritic melt vein, Physics of the Earth and Planetary Interiors,177, 3-4 116-121
30. Miyahara M., Ohtani E., Kimura M., El Goresy A., Ozawa S. and Nagase T. (2009) Detailed FIB-TEM study of ringwoodite lamellae in individual olivine grains in shock-melt veins of Yamato 791384 L6 chondrite. Meteoritics & Planetary Science 44 (Supplement), A145, 2009.
31. El Goresy A., Miyahara M., Ohtani E., Nagase T., Nishijima M., Ferroir T. and Gillet Ph. (2009) Micro-surgical FIB-TEM study of diverse liquidus wadsleyite-ringwoodite pairs fractionally crystallized from olivine melt enclaves in shock melt veins in L6 chondrites. Meteoritics & Planetary Science 44 (Supplement), A79, 2009.El Goresy A., Miyahara M., Ohtani E., Ozawa S., Nagase T. and Nishijima M. , (2009) First natural occurrence of ringwoodite exsolution lamellae in fractionally crystallized Mg-rich wadsleyite from shock-induced olivine melts in L6 chondrites.[Annual report of Bayerisches Forschungsinstitut fur Experimentelle Geochemie und Geophysik, Universitat Bayreuth,(2009),158-162]
32. Miyahara M., Ohtani E., Kimura M., El Goresy A., Ozawa S., Nagase T., Nishijima M. and Hiraga K (2009) Coherent ringwoodite growth in olivine of Yamato 791384 L6 chondrite.[Annual report of Bayerisches Forschungsinstitut fur Experimentelle Geochemie und Geophysik, Universitat Bayreuth, (2009),162-164].
33. El Goresy A., Miyahara M., Ohtani E., Nagase T., Nishijima M., Ferroir T. and Gillet Ph. (2009) Micro-surgical FIB-TEM study of diverse liquidus wadsleyite-ringwoodite pairs fractionally crystallized from olivine melt enclaves in shock melt veins in L6 chondrites.[Meteoritics & Planetary Science,44 ,A79]
34. Miyahara M., Ohtani E., Kimura M., El Goresy A. Ozawa S., Nagase T., Nishijima M. and Hiraga K. Coherent and subsequent incoherent ringwoodite growth in olivine of shocked L6 chondrites. [Earth and Planetary Science Letter, 295, (2010),321-327]
35. Miyahara M., Ohtani E., Kimura M., Ozawa S., Nagase T., Nishijima M. and Hiraga K. Melting and subsequent decompression processes recorded in a shock vein of an L6 chondrite. [Meteoritics & Planetary Science, 45, (2010), A140]
36. Feng L., Miyahara M., Lin Y., Ohtani E., E. Goresy A., Nagase T.. and Hu S. ,First evidence for multi shock events on the L chondritic parent body. [Meteoritics & Planetary Science, 45,(2010), A53]
37. El Goresy A., Miyahara M., Ozawa S., Ohtani E., Gillet Ph., Beck P. Montagnac G., Nagase T. and Hiraga K. (2010) Liquidus high-pressure assemblages in shocked Martian shergottites: constrains to equilibrium peak shock-pressures and consequences to radiometric ages.[Meteoritics & Planetary Science,45,(2010),A50]