MASAAKI MIYAHARA

Last Updated :2025/06/16

Affiliations, Positions
Graduate School of Advanced Science and Engineering, Associate Professor
E-mail
miyaharahiroshima-u.ac.jp
Self-introduction
I am working on a fine-grained material in a meteorite to elucidate planetary evolution.

Basic Information

Academic Degrees

  • Doctor of Science, Hiroshima University
  • Master of Science, Hiroshima University

Educational Activity

  • [Bachelor Degree Program] School of Science : Earth and Planetary Systems Science : Earth and Planetary Systems Science
  • [Master's Program] Graduate School of Advanced Science and Engineering : Division of Advanced Science and Engineering : Earth and Planetary Systems Science Program
  • [Doctoral Program] Graduate School of Advanced Science and Engineering : Division of Advanced Science and Engineering : Earth and Planetary Systems Science Program

Research Fields

  • Mathematical and physical sciences;Earth and planetary science;Geochemistry / Cosmochemistry

Research Keywords

  • meteorite
  • planetesimal collision
  • high-pressure minerals
  • electron microscope

Affiliated Academic Societies

  • Mineralogical Society of America
  • The Japanese Society for Planetary Sciences
  • Japan Geoscience Union
  • Japan Association of Mineralogical Sciences
  • The Japan society of High Pressure Science and Technology
  • The Meteoritical Society

Educational Activity

Course in Charge

  1. 2025, Liberal Arts Education Program1, Year, Advanced Seminar（Earth science field trip - let's observe the earth in the field）
  2. 2025, Liberal Arts Education Program1, Intensive, Introduction to Science
  3. 2025, Liberal Arts Education Program1, Intensive, Introduction to Science
  4. 2025, Liberal Arts Education Program1, 2Term, Earth Science A
  5. 2025, Liberal Arts Education Program1, 1Term, Earth Science A
  6. 2025, Undergraduate Education, 4Term, Introduction to Earth and Planetary Sciences B
  7. 2025, Liberal Arts Education Program1, 1Term, Introductory Seminar for First-Year Students
  8. 2025, Undergraduate Education, First Semester, Special Study for Graduation
  9. 2025, Undergraduate Education, Second Semester, Special Study for Graduation
  10. 2025, Undergraduate Education, 3Term, Exercise of Astronomy & Planetary Science
  11. 2025, Undergraduate Education, 1Term, Material evolution in the solar system
  12. 2025, Undergraduate Education, First Semester, Field Excursion for Earth Science A
  13. 2025, Undergraduate Education, 2Term, Special Lectures in Earth and Planetary Systems Science (Solar system evolution)
  14. 2025, Undergraduate Education, 2Term, Experiments in General Geology A
  15. 2025, Graduate Education (Master's Program) , 3Term, Survey of Earth and Planetary Systems Science
  16. 2025, Graduate Education (Master's Program) , 1Term, Evolution of the Solar System
  17. 2025, Graduate Education (Master's Program) , 2Term, Special Lecture on Earth and Planetary Systems Science B
  18. 2025, Graduate Education (Master's Program) , Year, Exercise for Globalization I
  19. 2025, Graduate Education (Master's Program) , Year, Exercise for Globalization II
  20. 2025, Graduate Education (Master's Program) , Year, Integrated Seminar on Earth and Planetary Systems Science
  21. 2025, Graduate Education (Master's Program) , First Semester, Midterm Exercise for Earth and Planetary Systems Science
  22. 2025, Graduate Education (Master's Program) , First Semester, Special Exercise for Earth and Planetary Systems Science A
  23. 2025, Graduate Education (Master's Program) , Second Semester, Special Exercise for Earth and Planetary Systems Science B
  24. 2025, Graduate Education (Master's Program) , Year, Special Study for Earth and Planetary Systems Science
  25. 2025, Graduate Education (Doctoral Program) , Year, Special Study for Earth and Planetary Systems Science

Research Activities

Academic Papers

  1. Electron microscopy observations of the diversity of Ryugu organic matter and its relationship to minerals at the micro- to nano-scale, Meteoritics & Planetary Science, 59(8), 2023-2043, 2024
    Link to Paper Search Results by DOI
  2. Four-dimensional-STEM analysis of the phyllosilicate-rich matrix of Ryugu samples, Meteoritics & Planetary Science, 59(8), 2002-2022, 2024
    Link to Paper Search Results by DOI
  3. In situ investigation of an organic micro-globule and its mineralogical context within a Ryugu sand grain., Meteoritics & Planetary Science, 59(8), 1983-2001, 2024
    Link to Paper Search Results by DOI
  4. Location of NWA 6148 and NWA 10153 in the nakhlite body and their aqueous alteration, METEORITICS & PLANETARY SCIENCE, 60(3), 596-615, 202503
    Link to Paper Search Results by DOI
  5. Microscopic slickenside as a record of weak shock metamorphism in the surface layer of asteroid Ryugu, METEORITICS & PLANETARY SCIENCE, 59(12), 3181-3192, 202412
    Link to Paper Search Results by DOI
  6. Phyllosilicates with embedded Fe-based nanophases in Ryugu and Orgueil, METEORITICS & PLANETARY SCIENCE, 59(8), 1947-1965, 202408
    Link to Paper Search Results by DOI
  7. Influx of nitrogen-rich material from the outer Solar System indicated by iron nitride in Ryugu samples, NATURE ASTRONOMY, 8(2), 202402
    Link to Paper Search Results by DOI
  8. A dehydrated space-weathered skin cloaking the hydrated interior of Ryugu, NATURE ASTRONOMY, 7(2), 170-+, 202302
    Link to Paper Search Results by DOI
  9. Mn-Precipitates Found in a Martian Crustal Rock, JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS, 128(9), 202309
    Link to Paper Search Results by DOI
  10. A history of mild shocks experienced by the regolith particles on hydrated asteroid Ryugu, NATURE ASTRONOMY, 7(6), 669-677, 202306
    Link to Paper Search Results by DOI
  11. Nonequilibrium spherulitic magnetite in the Ryugu samples, GEOCHIMICA ET COSMOCHIMICA ACTA, 346, 65-75, 20230401
    Link to Paper Search Results by DOI
  12. Vesicular Olivines and Pyroxenes in Shocked Kamargaon L6 Chondrite: Implications for Primary Volatiles and Its Multiple Impacts History, JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS, 127(11), 202211
    Link to Paper Search Results by DOI
  13. Apollo 15 regolith breccia provides first natural evidence for olivine incongruent melting, AMERICAN MINERALOGIST, 107(9), 1661-1667, 20220927
    Link to Paper Search Results by DOI
  14. Back-transformation processes in high-pressure minerals: implications for planetary collisions and diamond transportation from the deep Earth, PROGRESS IN EARTH AND PLANETARY SCIENCE, 9(1), 20220421
    Link to Paper Search Results by DOI
  15. Poirierite, a dense metastable polymorph of magnesium iron silicate in shocked meteorites, COMMUNICATIONS EARTH & ENVIRONMENT, 2(1), 20210122
    Link to Paper Search Results by DOI
  16. Shock-Induced Incongruent Melting of Olivine in Kamargaon L6 Chondrite, GEOPHYSICAL RESEARCH LETTERS, 48(12), 20210628
    Link to Paper Search Results by DOI
  17. Complicated pressure-temperature path recorded in the eucrite Padvarninkai, METEORITICS & PLANETARY SCIENCE, 56(8), 1443-1458, 202108
    Link to Paper Search Results by DOI
  18. Chondrule Flattening by Shock Recovery Experiments on Unequilibrated Chondrites, JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS, 126(8), 202108
    Link to Paper Search Results by DOI
  19. Elucidation of impact event recorded in the lherzolitic shergottite NWA 7397, METEORITICS & PLANETARY SCIENCE, 56(9), 1729-1743, 202109
    Link to Paper Search Results by DOI
  20. Natural Fe-bearing aluminous bridgmanite in the Katol L6 chondrite, PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 118(40), 20211005
    Link to Paper Search Results by DOI
  21. Natural and experimental high-pressure, shock-produced terrestrial and extraterrestrial materials, PROGRESS IN EARTH AND PLANETARY SCIENCE, 8(1), 20211018
    Link to Paper Search Results by DOI
  22. Phase and melting relations of Fe3C to 300 GPa and carbon in the core, Carbon in Earth's interior, Geophysical Monograph Series, 249, 25-36, 2020
    Link to Paper Search Results by DOI
  23. Back transformation mechanisms of ringwoodite and majorite in an ordinary chondrite, Meteoritics and Planetary Science, 2020
    Link to Paper Search Results by DOI
  24. Systematic investigations of high-pressure polymorphs in shocked ordinary chondrites, METEORITICS & PLANETARY SCIENCE, 55(12), 2619-2651, 202012
    Link to Paper Search Results by DOI
  25. Evidence for early impact on a hot differentiated planetesimal from Al-rich micro-inclusions in ungrouped achondrite Northwest Africa 7325, GEOCHIMICA ET COSMOCHIMICA ACTA, 258, 310-335, 20190801
    Link to Paper Search Results by DOI
  26. Olivine melting at high pressure condition in the chassignite Northwest Africa 2737, Physics of the Earth and Planetary Interiors, 291, 1-11, 2019
    Link to Paper Search Results by DOI
  27. Discovery of moganite in a lunar meteorite as a trace of water ice in the Moon’s subsurface, Science Advances, 4(5), 2018
    Link to Paper Search Results by DOI
  28. Shock-induced thermal history of an EH3 chondrite, Asuka 10164., Meteoritics & Planetary Science, 52, 24-35, 2017
    Link to Paper Search Results by DOI
  29. Spherulite-like jadeite growth in shock-melt veins of the Novosibirsk H5/6 chondrite, Russian Geology and Geophysics, 58, 12-19, 2017
    Link to Paper Search Results by DOI
  30. Shock-induced P-T conditions and formation mechanism of akimotoite-pyroxene glass assemblages in the Grove Mountains (GRV) 052082 (L6) meteorite., American Mineralogist, 102, 1254-1262, 2017
    Link to Paper Search Results by DOI
  31. Origin of EL3 chondrites: Evidence for variable C/O ratios during their course of formation—A state of the art scrutiny, Meteoritics and Planetary Science, 52, 781-806, 2017
    Link to Paper Search Results by DOI
  32. Albite dissociation reaction in the Northwest Africa 8275 shocked LL chondrite and implications for its impact history, Geochimica et Cosmochimica Acta, 217, 320-333, 2017
    Link to Paper Search Results by DOI
  33. High-pressure minerals in shocked meteorites., Meteoritics and Planetary Science, 52, 2017-2039, 2017
    Link to Paper Search Results by DOI
  34. Spin state and electronic environment of iron in basaltic glass in the lower mantle, American Mineralogist, 102, 2106-2112, 2017
    Link to Paper Search Results by DOI
  35. Spatially resolved distribution of Fe species around microbes at the submicron scale in natural bacteriogenic iron oxides., Microbes and Environments, 32, 283-287, 2017
    Link to Paper Search Results by DOI
  36. Jadeite in shocked meteorites and its textural variations, JOURNAL OF MINERALOGICAL AND PETROLOGICAL SCIENCES, 112(5), 247-255, 201710
    Link to Paper Search Results by DOI
  37. High-pressure polymorphs in Yamato-790729 L6 chondrite and their significance for collisional conditions., Meteoritics and Planetary Science, 52(12), 2570-2585, 2017
    Link to Paper Search Results by DOI
  38. Discovery of natural MgSiO3 tetragonal garnet in a shocked chondritic meteorite, Science Advances, 2(e1501725), 2016
    Link to Paper Search Results by DOI
  39. Phase transition processes of olivine in the shocked Martian meteorite Tissint: Clues to origin of ringwoodite-, bridgmanite- and magnesiowüstite-bearing assemblages, Physics of the Earth and Planetary Interiors, 259, 18-28, 2016
    Link to Paper Search Results by DOI
  40. ★, Discovery of stishovite in Apollo 15299 sample, American Mineralogist, 100, 1308-1311, 2015
    Link to Paper Search Results by DOI
  41. ★, Unique large diamonds in a ureilite from Almahata Sitta 2008 TC3 asteroid, Geochimica et Cosmochimica Acta, 163, 14-26, 2015
    Link to Paper Search Results by DOI
  42. ★, Discovery of coesite and stishovite in eucrite, Proceedings of the National Academy of Sciences U.S.A., 111(30), 10939-10942, 20140729
    Link to Paper Search Results by DOI
  43. Stability of a hydrous delta-phase, AlOOH-MgSiO2(OH)(2), and a mechanism for water transport into the base of lower mantle, Earth and Planetary Science Letters, 401, 12-17, 20140901
    Link to Paper Search Results by DOI
  44. The abundance of potassium in the Earth's core, Physics of the Earth and Planetary Interiors, 237, 65-72, 201412
    Link to Paper Search Results by DOI
  45. ★, Jadeite in Chelyabinsk meteorite and the nature of an impact event on its parent body, Scientific Reports, 4, 2014
    Link to Paper Search Results by DOI
  46. ★, NanoSIMS analysis of organic carbon from the Tissint Martian meteorite: Evidence for the past existence of subsurface organic-bearing fluids on Mars, Meteoritics and Planetary Science, 49, 2201-2218, 2014
    Link to Paper Search Results by DOI
  47. エポックメイキングな隕石たち（その5）：Almahata Sitta隕石～落ちてきた不均質小惑星“2008 TC3”～, Planetary people, 23, 382-385, 2014
  48. Jadeite formation in shocked ordinary chondrites, Earth and Planetary Science Letters, 373, 102-108, 20130401
    Link to Paper Search Results by DOI
  49. Shock-induced deformation of Shergottites: Shock-pressures and perturbations of magmatic ages on Mars, Geochimica et Cosmochimica Acta, 101, 233-262, 20130101
  50. ★, Discovery of seifertite in a shocked lunar meteorite, Nature Communications, 4, 2013
    Link to Paper Search Results by DOI
  51. Formation mechanisms of high-pressure polymorphs in shocked meteorites, 地球化学, 47, 45-52, 2013
  52. Melting relationships in the Fe-Fe3S system up to the outer core conditions, Earth and Planetary Science Letters, 359-360, 26-33, 20120901
  53. Discovery of Hg-Cu-bearing metal-sulfide assemblages in a primitive H-3 chondrite: Towards a new insight in early solar system processes, Earth and Planetary Science Letters, 349-350, 261-271, 20120801
  54. High-pressure minerals in the Earth and planetary materials, Japanese magazine of mineralogical and petrological sciences, 41, 87-100, 2012
  55. Evidence for multiple dynamic events and subsequent decompression stage recorded in a shock vein, Earth and Planetary Science Letters, 307, 361-368, 20110501
  56. The transformation of olivine induced by a planetesimal collision, Planetary people, 20, 147-153, 20110501
  57. ★, Natural dissociation of olivine to (Mg,Fe)SiO3 perovskite and magnesiowustite in a shocked Martian meteorite, Proceedings of the National Academy of Sciences U.S.A., 108, 5999-6003, 20110401
  58. Petrography of Yamato 984028 lherzolitic shergottite and its melt vein: implications for its shock metamorphism and origin of the vein, Polar Science, 4, 550-557, 20110901
  59. ★, Coesite and Stishovite in a shocked lunar meteorite, Asuka-881757, and impact events in lunar surface., Proceedings of the National Academy of Sciences U.S.A., 108, 463-466, 2011
    Link to Paper Search Results by DOI
  60. Coherent and subsequent incoherent ringwoodite growth in olivine of shocked L6 chondrites, Earth and Planetary Science Letters, 295, 321-327, 2010
    Link to Paper Search Results by DOI
  61. Inhibition of subduction thrust earthquakes by low-temperature plastic flow in serpentine, Earth and Planetary Science Letters, 295, 349-357, 2010
  62. The partitioning of oxygen between the Earth's mantle and core. , Journal of Geophysical Research , 115, B02202, 2010
  63. ★, Fractional crystallization of olivine melt inclusion in shock-induced chondritic melt vein, Physics of the Earth and Planetary Interiors, 177, 116-121, 2009
  64. Kushiroite, CaAlAlSiO6: A new mineral of the pyroxene group from the ALH 85085 CH chondrite and its genetic significance in refractory inclusions, American Mineralogist, 94, 1479-1482, 2009
  65. Transformation textures, mechanisms of formation of high-pressure minerals in shock melt veins of L6 chondrites, and pressure-temperature conditions of the shock events, Meteoritics and Planetary Science, 44, 1771-1786, 2009
  66. Fe-Mg partitioning between perovskite and ferropericlase at the lower mantle, American Mineralogist, 94, 921-925, 2009
  67. Application of FIB system to ultra-high-pressure Earth science, Journal of Mineralogical and Petrological Sciences, 103, 88-93, 2008
  68. ★, 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 U.S.A., 105, 8542-8547, 2008
  69. Iron speciation in fault gouge from the Ushikubi fault zone central Japan, Hyperfine Interaction, 186, 39-52, 2008
  70. Iron oxide precipitate in seepage of groundwater from a landslide slip zone, Environmental Geology, 51, 1455-1464, 2007
  71. Iron speciation and mineral characterization of contaminated sediments by coal mining drainage in Neath Canal, South Wales, United Kingdom , Geochemical Journal, 41, 463-474, 2007
  72. Silicon-substituted magnetite and accompanying iron oxides and hydroxides from the Kumano mine, Yamaguchi Prefecture, Japan: Reexamination of the so-called maghemite (γ-Fe2O3) , Journal of Mineralogical and Petrological Sciences,, 102, 182-193, 2007
  73. マサ化花崗岩に発達する粘土細脈について－六甲花崗岩での調査事例－, Journal of the Japan Landslide Society, 43, 70-76, 2006
  74. Chlorite exhibits a little swelling property formed in green rock distributed in the Nishinotani landslide area, Ehime, SW Japan, Journal of the Japan Landslide Society, 42, 69-73, 2005
  75. Chlorite in metabasites from the Mikabu and North-Chichibu belts, Southwest Japan, Clays and Clay Minerals, 53, 466-477, 2005
  76. 四国中央部の三波川, 御荷鉾及び秩父帯に産する粘土鉱物について-善徳, 怒田・八畝, 蔭, 西の谷地すべり及び桧山トンネルより得られたボーリングコアの分析結果, Journal of the Japan Landslide Society, 42, 53-60, 2005
  77. The simple preparation technique of a fragile specimen for HRTEM observation , Clay Science, 12, 271-275, 2004
  78. 四国，中央構造線沿いの熱水変質帯における地すべりの初期発生機構－ミクロの見地から－, Journal of the Japan Landslide Society, 41, 33-42, 2004
  79. 御荷鉾緑色岩類中の地すべり地に生成する粘土鉱物－怒田・八畝、蔭地すべり地 , Journal of the Clay Science Society of Japan, 42, 81-88, 2002
  80. 2001年3月24日に発生した芸予地震災害速報－広島県における地震災害－, Journal of the Clay Science Society of Japan, 40, 249-255, 2001

Invited Lecture, Oral Presentation, Poster Presentation

  1. Alkaline-rich accessory minerals in Ryugu grain and Orgueil CI chondrite, Masaaki Miyahara, Takaaki Noguchi, Akira Yamaguchi, Toru Nakahashi, Yuto Takaki, Naotaka Tomioka, Toru Matsumoto, Akira Miyake, Yohei Igami, and Yusuke Seto, The 15th Symposium on Polar Science, 2024, Without Invitation, English, NIPR, Tachikawa
  2. Hyper-velocity impact phenomena caused by Giant Impact debris-Pressure and temperature conditions probed by impact melt breccia-, Hibiki Toyoshima, Masaaki Miyahara, Akira Yamaguchi, Takeshi Sakai, and Naotaka Tomioka, The 15th Symposium on Polar Science, 2024, Without Invitation, English, NIPR, Tachikawa
  3. Role of ferropericlase and akimotoite in rheological weakening of subducting slab across the upper and lower mantle boundary, Yuta Goto, Tomoaki Kubo, Rikuto Honda, Yuki Shibazaki, Yu Nishihara, Yuji Higo, Yoshinori Tange, Masaaki Miyahara, Yuta Goto, Tomoaki Kubo, Rikuto Honda, Yuki Shibazaki, Yu Nishihara, Yuji Higo, Yoshinori Tange, Masaaki Miyahara, JpGU meeting 2023, 2023/05/25, Without Invitation, Japanese, JpGU, Makuhari
  4. The olivine-ringwoodite transformation under uniaxial stress: Implications for seismicity and rheological weakening in deep slabs, Rikuto Honda, Tomoaki Kubo, Masaaki Miyahara, Takuya Iwasato, Yuji Higo, Yuta Goto, Yuichiro Mori, Yumiko Tsubokawa, Akio Suzuki, Yuki Shibazaki, Rikuto Honda, Tomoaki Kubo, Masaaki Miyahara, Takuya Iwasato, Yuji Higo, Yuta Goto, Yuichiro Mori, Yumiko Tsubokawa, Akio Suzuki, Yuki Shibazaki, JpGU2023 meeting, 2023/05/25, Without Invitation, Japanese, JpGU, Makuhari
  5. Mild shock metamorphism experienced by surface particles of asteroid Ryugu, Naotaka Tomioka, Akira Yamaguchi, Motoo Ito, Masayuki Uesugi, Naoya Imae, Naoki Shirai, Takuji Ohigashi, Makoto Kimura, Ming-Chang Liu, Richard C Greenwood, Kentaro Uesugi, Aiko Nakato, Kasumi Yogata, Hayato Yuzawa, Yu Kodama, Kaori Hirahara, Ikuya Sakurai, Ikuo Okada, Yuzuru Karouji, Keishi Okazaki, Kosuke Kurosawa, Takaaki Noguchi, Akira Miyake, Masaaki Miyahara, Yusuke Seto, Toru Matsumoto, Yohei Igami, Hayabusa2 Curation Team, Tomohiro Usui, Sei-ichiro Watanabe, Yuichi Tsuda, Naotaka Tomioka, Akira Yamaguchi, Motoo Ito, Masayuki Uesugi, Naoya Imae, Naoki Shirai, Takuji Ohigashi, Makoto Kimura, Ming-Chang Liu, Richard C Greenwood, Kentaro Uesugi, Aiko Nakato, Kasumi Yogata, Hayato Yuzawa, Yu Kodama, Kaori Hirahara, Ikuya Sakurai, Ikuo Okada, Yuzuru Karouji, Keishi Okazaki, Kosuke Kurosawa, Takaaki Noguchi, Akira Miyake, Masaaki Miyahara, Yusuke Seto, Toru Matsumoto, Yohei Igami, Hayabusa2 Curation Team, Tomohiro Usui, Sei-ichiro Watanabe, Yuichi Tsuda, JpGU2023, 2023/05/25, Without Invitation, Japanese, JpGU, Makuhari
  6. The shock recovery experiments of CI chondrites, T. Nakahashi, M. Miyahara, A. Yamaguchi, T. Kobayashi, H. Yusa, N. Tomioka, T. Nakahashi, M. Miyahara, A. Yamaguchi, T. Kobayashi, H. Yusa, N. Tomioka, The 14th Symposium on Polar Science, 2023/11/14, Without Invitation, English, NIPR, Tachikawa
  7. DEHYDRATION DECOMPOSITION OF PHYLLOSILICATES IN THE C-TYPE ASTEROID RYUGU MATERIAL BY SPACE WEATHERING, T. Noguchi, T. Matsumoto, A. Miyake, Y. Igami, M. Haruta, H. Saito, S. Hata, Y. Seto, M. Miyahara, N. Tomioka, and 65 authors, 85th Annual Meeting of The Meteoritical Society, 2022/08/18, Without Invitation, English, Glasgow
  8. Vesicular olivines and pyroxenes in shocked Kamargaon L6 Chondrite: Implications for primary volatiles and its multiple impacts history, K. Tiwari, S. Ghosh, M. Miyahara, D. Ray, 85th Annual Meeting of The Meteoritical Society, 2022/08/18, Without Invitation, English, Glasgow
  9. Rheological weakening of the lower-mantle slab by superplastic flow of the post-spinel assemblage, Yuta Goto, Tomoaki Kubo, Rikuto Honda, Yu Nishihara, Yuji Higo, Yoshinori Tange, Masaaki Miyahara, Japan Geoscience Union Meeting 2022, 2022/05/26, Without Invitation, English
  10. The olivine-ringwoodite transformation triggers shear localization and shear instability, Rikuto Honda, Tomoaki Kubo, Masaaki Miyahara, Takuya Iwasato, Yuichiro Mori, Yuji Higo, Yuta Goto, Yumiko Tsubokawa, Japan Geoscience Union Meeting 2022, 2022/05/26, Without Invitation, English
  11. Slickenside as a record of shock metamorphism on asteroid Ryugu., M. Miyahara, T. Noguchi, T. Matsumoto, N. Tomioka, A. Miyake, Y. Igami, Y. Seto, T. Nakamura, H. Yurimoto, R. Okazaki, H. Yabuta, H. Naraoka, S. Tachibana, S. Watanabe, Y. Tsuda, and the Hayabusa2 Initial Analysis Sand Team, Hayabusa 2022 symposium, 2022/11/16, Without Invitation, English, Sagamihara
  12. Elucidation of aqueous alteration in the lava units with nakhlites NWA 10153 and NWA 6148., K. Kukihara, M. Miyahara, A. Yamaguchi, Y. Takahashi, Y. Takeichi, N. Tomioka, and E. Ohtani, The 13th Symposium on Polar Science, 2022/11/17, Without Invitation, English, Tachikawa
  13. Space weathering of anhydrous minerals in regolith samples from the c-type asteroid ryugu, Matsumoto T., Noguchi T., Miyake A., Igami Y., Haruta M., Saito H., Hata S., Seto Y., Miyahara M., Tomioka N., Yurimoto H., Nakamura T., Yabuta H., Naraoka H., Okazaki R., Sakamoto K., Tachibana S., Watanabe S., Tsuda Y., and the Min-Pet Fine Sub-team, 53rd Lunar and Planetary Science Conference, 2022/03/07, Without Invitation, English
  14. Mineralogy and space weathering of fine fraction recovered from asteroid (162173) ryugu., Noguchi T., Matsumoto T., Miyake A., Igami Y., Haruta M., Saito H., Hata S., Seto Y., Miyahara M., Tomioka N., and 56 authors., 53rd Lunar and Planetary Science Conference, 2022/03/07, With Invitation, English
  15. High-pressure minerals in CB carbonaceous chondrites, Miyahara M., Ohtani E., Yamaguchi A., Tomioka N, The 12th Symposium on Polar Science, 2021/11/18, Without Invitation, English
  16. Surface morphologies and space weathering features of Ryugu samples, Matsumoto T., Noguchi T., Miyake A., Igami Y., Haruta M., Saito H., Hata S., Seto Y., Miyahara M., Tomioka N., 50 authors, and the Hayabusa2 Initial Analysis Team, Hayabusa 2021, 2021/11/16, Without Invitation, English
  17. Mineralogy and surface modification of small grains recovered from the asteroid 162173 Ryugu, Noguchi T., Matsumoto T., Miyake A., Igami Y., Haruta M., Saito H., Hata S., Seto Y., Miyahara M., Tomioka N., 50 authors and the Hayabusa2 Initial Aalysis Team, Hayabusa 2021, 2021/11/16, With Invitation, English
  18. The petrological and mineralogical descriptions of nakhlites NWA 6148 and NWA 10153, Kukihara Kakeru, Masaaki Miyahara, Akira Yamaguchi, Yoshio Takahashi, Yasuo Takeichi, Naotaka Tomioka, Eiji Ohtani, Japan Geoscience Union Meeting 2021, 2021/05/30, Without Invitation, English, Japan Geoscience Union, Online
  19. The discovery of Mn-precipitates in nakhlites Yamato 000802, Ayaka Nakamura, Masaaki Miyahara, Hiroki Suga, Akira Yamaguchi, Wakabayashi Daisuke, Shohei Yamashita, Yasuo Takeichi, Yoshio Takahashi, Eiji Ohtani, The 11th Symposium on Polar Science, 2020/12/03, Without Invitation, English, NIPR, Online
  20. Shock and recovery experiments of type 3 ordinary chondrites, Masaaki Miyahara, Junnosuke Edanaga, Akira Yamaguchi, Takamichi Kobayashi, Toshimori Sekine, and Ayaka Nakamura, 2020 Online Meeting Japan Association of Mineralogical Sciences, 2020/09/16, Without Invitation, Japanese
  21. A new Mg2SiO4 polymorph "poirierite" in shocked meteorites and its possible high-pressure synthesis conditions, Naotaka Tomioka, Takuo Okuchi, Luca Bindi, Masaaki Miyahara, Toshiaki Iitaka, Zhi Li, Xiande Xie, Narangoo Purevjav, Kiyoshi Fujino, Tetsuo Irifune, Riho Tani, Yu Kodama, JpGU-AGU joint meeting 2020, 2020/07/13, Without Invitation, English, JpGU
  22. Shock and recovery experiments of petrologic type 3 ordinary chondrite, Masaaki Miyahara, Junnosuke Edanaga, Akira Yamaguchi, Takamichi Kobayashi, Toshimori Sekine, JpGU-AGU joint meeting, 2020/07/13, Without Invitation, English, JpGU
  23. Aqueous alteration in the nakhlites Y 000802, Ayaka Nakamura, Masaaki Miyahara, Hiroki Suga, Akira Yamaguchi, Daisuke Wakabayashi, Shohei Yamashita, Yasuo Takeichi, Yoshio Takahashi, Eiji Ohtani, JpGU-AGU joint meeting, 2020/07/12, Without Invitation, English, JpGU
  24. The investigation of back-transformation mechanisms of ringwoodite and majorite in the Yamato 75267 H6, K. Fukimoto, M. Miyahara, T. Sakai, H. Ohfuji, T. Naotaka, Y. Kodama, E. Ohtani, A. Yamaguchi, The 10th Symposium on Polar Science, 2019/12/05, Without Invitation, English, NIPR, Tachikawa
  25. Elucidation of aqueous alteration of Yamato 000749 based on multi-probe microscopy, Naoki Shiraishi, Hiroki Suga, Masaaki Miyahara, Takuji Ohigashi, Yuichi Inagaki, Akira Yamaguchi, Naotaka Tomioka, Yu Kodama, and Eiji Ohtani, The 10th Symposium on Polar Science, 2019/12/05, Without Invitation, English
  26. The investigation of back-transformation mechanisms of ringwoodite and majorite in the Yamato 75267 H6, Fukimoto K., Miyahara M., Sakai T., Ohfuji H., Naotaka T., Kodama Y., Ohtani E., and Yamaguchi A., The Tenth Symposium on Polar Science, 2019/12/04, Without Invitation, English, National Institute of Polar Research, Tachikawa
  27. Elucidation of back-transformation mechanisms of ringwoodite and majorite occurred in the ordinary chondrite, Kanta FUKIMOTO, Masaaki MIYAHARA, Takeshi SAKAI, Hiroaki OHFUJI, Naotaka TOMIOKA, Yu KODAMA, Eiji OHTANI, and Akira YAMAGUCHI, 2019/10/23, Without Invitation, Japanese
  28. The complex shock metamorphism history recorded in the Padvarninkai, Masaaki Miyahara, Akira Yamaguchi, Eiji Ohtani, 2019/09/20, Without Invitation, Japanese
  29. Uranium-lead systematics of lunar basaltic meteorite Northwest Africa 2977, N. Moromoto, Y. Kawai, S. Yokota, K. Terada, M., Miyahara, N. Takahata and Y. Sano, 82nd Annual Meeting of the meteoritical society, 2019/07/09, Without Invitation, English, The meteoritical society, Sapporo
  30. Topotaxial intergrowths of epsilon-(Mg,Fe)2SiO4 in wadsleyite and ringwoodite in shocked chondrites, N. Tomioka, T. Okuchi, M. Miyahara, T. Iitaka, N. Purevjav, R. Tani, and Y. Kodama, 82nd Annual Meeting of the meteoritical society, 2019/07/09, Without Invitation, English, The Meteoritical Society, Sapporo
  31. Shock-induced melting and high-pressure polymorphs in lunar basaltic meteorites, M. Miyahara, K. Kozuma, E. Ohtani, A. Yamaguchi, T. Sakai, H. Ohfuji, N. Tomioka, and Y. Kodama, 82nd Annual Meeting of the meteoritical society, 2019/07/09, Without Invitation, English, The meteoritical society, Sapporo
  32. Time-resolved synchrotron X-ray observations of mineral transformations under static pressures: applications to non-equilibrium behaviors in shocked meteorites, T. Kubo and M. Miyahara, Japan Geoscience Union Meeting 2019, 2019/05/29, With Invitation, Japanese, Japan Geoscience Union, Makuhari
  33. Raman spectroscopy of seifertite, M. Kayama, E. Ohtani, M. Miyahara, S. Kaneko, T., Sekine, S. Ozawa, and N. Hirao, Japan Geoscience Union Meeting 2019, 2019/05/29, Without Invitation, English, Japan Geoscience Union, Makuhari
  34. Lattice-shear-induced metastable formation of high-pressure silicates in shocked meteorites, N. Tomioka, T. Okuchi, M. Miyahara, Japan Geoscience Union Meeting 2019, 2019/05/28, With Invitation, English, Japan Geoscience Union, Makuhari
  35. Can high-pressure polymorphs clarify an ordinary chondrite parent-body breakup?, M. Miyahara, A. Yamaguchi, M. Saitoh, K. Fukimoto, T. Sakai, H. Ohfuji, N. Tomioka, Y. Kodama, and E. Ohtani, Japan Geoscience Union Meeting 2019, 2019/05/28, Without Invitation, English, Japan Geoscience Union, Makuhari
  36. The systematic investigations of high-pressure minerals in lunar basaltic meteorites, M. Miyahara, K. Kozuma, E. Ohtani, A. Yamaguchi, T. Sakai, H. Ohfuji, N. Tomioka, Y. Kodama, Japan Geoscience Union Meetin 2019, 2019/05/27, Without Invitation, English, Japan Geoscience Union, Makuhari
  37. The systematic investigations of high-pressure polymorphs in shocked ordinary chondrites, M. Miyahara, A. Yamaguchi, M. Saitoh, K. Fukimoto, T. Sakai, H. Ohfuji, N. Tomioka, Y. Kodama and E. Ohtani, The Ninth Symposium on Polar Science, 2018/12/04, Without Invitation, English, NIPR, Sagamihara city
  38. Aqueous alteration of Yamato 000749 based on multi-probe microscopic observation, Naoki Shiraishi, Hiroki Suga, Masaaki Miyahara, Takuji Ohigashi, Yuichi Inagaki, Akira Yamaguchi, Tomioka Naotaka, Yu Kodama, and Eiji Ohtani, The Ninth Symposium on Polar Science, 2018/12/04, Without Invitation, English, NIPR, Sagamihara city
  39. The systematic investigation of high-pressure polymorphs in ordinary chondrites, Masaaki Miyahara, Akira Yamaguchi, Kanta Fukimoto, Masato Saitoh, Hiroaki Ohfuji, Takeshi Sakai, Eiji Ohtani, Annual meeting of Japan Association of MIneralogical Sicences, 2018/09/19, Without Invitation, Japanese, Japan Association of MIneralogical Sciences, Yamagata city
  40. Complex dynamic episode recorded in Chassignite NWA 2737, Miyahara M., Ohtani E., Nishijima M. and El Goresy A., Japan Geoscience Union meeting 2018, 2018/05/24, Without Invitation, English
  41. Elucidation of aqueous alteration recorded in Yamato 000749, Shiraishi N., Suga H., Miyahara M., Ohigashi T., Inagaki Y., Yamaguchi A., Naotaka T., Kodama Y. and Ohtani E., Japan Geoscience Union meeting 2018, 2018/05/23, Without Invitation, Japanese
  42. Unique occurrences of graphite and diamond in Almahatta Sitta ureilties, Miyahara M., Ohtani E., El Goresy A., Lin Y., Suga H., Ohigashi T., Japan Geoscience Union meeting 2018, 2018/05/22, Without Invitation, English
  43. In-situ characterization of carbon components in the North West Africa 7034, Suga H., Miyahara M., Ito M., Takeichi Y., Yabuta H., Takahashi Y., Ohtani E, The eighth Symposium on Polar Science, 2017/12/07, Without Invitation, English
  44. High-pressure dissociation of olivine in North West Africa 7397 lherzolitic shergottite, Yoshida M., Miyahara M., Yamaguchi A., Tomioka N., Sakai T., Ohfuji H., Maeda F., Ohira I., Ohtani E., Kamada S., Suga H., Ohigashi T., Inagaki Y., The eighth Symposium on Polar Science, 2017/12/07, Without Invitation, English
  45. Shocked type 3 ordinary chondrites, Miyahara M., Yamaguchi A., Ohtani E., Tomioka N, The eighth Symposium on Polar Science, 2017/12/06, Without Invitation, English, NIPR, Tachikawa
  46. Investigations of Martian meteorites with a multiscale microscope, Miyahara M, The multi-scale planetary science workshop, 2017/06/22, With Invitation, English, Paris
  47. Discovery of heavily shocked type 3 ordinary chondrites., Miyahara M., Yamaguchi A., Ohtani E, Japan Geoscience Union meeting 2017, 2017/05/23, Without Invitation, English
  48. Application of a STXM analysis for diamond in ureilite, Miyahara M., Suga H., Ohtani E., Ohigashi T. Inagaki Y, Japan Geoscience Union meeting 2017, 2017/05/23, Without Invitation, English
  49. Shock pressure estimation by high-pressure polymorphs and cathodoluminescence spectra of maskelynite in Yamato-790729 L6 chondrite and their significance for collisional condition, Kato Y., Sekine T., Kayama M., Miyahara M. and Yamaguchi A, Japan Geoscience Union meeting 2017, 2017/05/22, Without Invitation, English
  50. The high-pressure polymorphs in CB type chondrites, M. Miyahara, E. Ohtani, A. Yamaguchi, The 2016 Annual Meeting of Japan Association of Mineralogical Sciences, 2016/09/23, Without Invitation, Japanese, Japan Association of Mineralogical Sciences, Kanazawa
  51. Discovery of coesite, stishovite and seifertite in shocked meteorites and its implication, M. Miyahara, A. Yamaguchi and S. Ozawa, Shock Metamorphism and High Pressure Phases in Meteorites and Terrestrial Impactites, 2016/08/06, With Invitation, English, The meteoritical society, Berlin, Germany
  52. Natural high-pressure polymorphs of silica in shocked meteorites, M.Miyahara, E. Ohtani, International Workshop：New Challenges in Volatile Cycling in the Deep Earth, 2016/07/03, With Invitation, English, Tohoku forum for creativity, Sendai, Japan
  53. Water-rich lunar upper mantle as recorded in lunar meteorites, M. Kayama, S. Nakashima, N. Tomioka, Y. Seto, E. Ohtani, T. Fagan, H. Nagaoka, S. Ozawa, T. Sekine, M. Miyahara, A. Miyake, J. Fukuda , K. Tomeoka, S. Ichimura, M. Matsumoto, K. Suzuki and J. Götze, Japan Geoscience Union meeting 2016, 2016/05/24, Without Invitation, English, Japan Geoscience Union, Makuhari
  54. Petrology and mineralogy of Northwest Africa 7397 lherzolitic shergottite, M. Yoshida, M. Miyahara, T. Sakai, H. Ohfuji and A. Yamaguchi, Japan Geoscience Union 2016, 2016/05/24, Without Invitation, English, Japan Geoscience Union, Makuhari
  55. Origin of water and water reservoirs on the Moon as considered from the perspective of material sciences, M. Kayama, N. Tomioka, E. Ohtani, S. Nakashima, Y. Seto, H. Nagaoka , T. Fagan, J. Götze, A. Miyake, S. Ozawa, T. Sekine, M. Miyahara, M. Matsumoto, N. Shoda, K. Tomeoka, Japan Geoscience Union meeting 2016, 2016/05/24, Without Invitation, English, Japan Geoscience Union, Makuhari
  56. In-situ obsevation of organic matter in the Allende meteorite matrix using X-ray microscopy, H. Suga, Y. Takeichi, C. Miyamoto, M. Miyahara, K. Mase, K. Ono and Y. Takahashi, Japan Geoscience Union meeting 2016, 2016/05/24, Without Invitation, English, Japan Geoscience Union, Makuhari
  57. Characterization of LUNA 24 regolith for deciphering the magmatism history on Mare Crisium, K. Terada, H. Minori, Y. Kawai and M. Miyahara, Japan Geoscience Union meeting 2016, 2016/05/24, Without Invitation, English, Japan Geoscience, Makuhari
  58. A high-pressure polymorph inventory in shocked L type ordinary chondrites, M. Miyahara, A. Yamaguchi, E. Ohtani, M. Saitoh, Japan Geoscience Union meeting 2016, 2016/05/24, Without Invitation, English, Japan Geoscience Union, Makuhari
  59. Application of a FIB system to ultra-high-pressure Earth and planetary sciences., M. Miyahara, E. Ohtani, Applications of FIB (Focused ion beam) Technology” workshop, 2015/02/21, With Invitation, English, HPSTAR, China, Shanghai, China

External Funds

Acceptance Results of Competitive Funds

  1. KAKENHI, 2014, 2016
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History as Peer Reviews of Academic Papers

  1. 2024, Meteoritics & Planetary Science, Others, 1
  2. 2024, Journal of Geophysical Research, Others, 1
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