Development of rock texture and fluid generation processes within convergent plate boundary

• Project/Area Number: 17H02981
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Petrology/Mineralogy/Economic geology
• Research Institution: Tohoku University
• Principal Investigator: Atsushi Okamoto 東北大学, 環境科学研究科, 教授 (40422092)
• Co-Investigator(Kenkyū-buntansha): 宇野 正起 東北大学, 環境科学研究科, 助教 (50748150) ; 清水 浩之 東北大学, 流体科学研究所, 助教 (60610178)
• Project Period (FY): 2017-04-01 – 2021-03-31
• Project Status: Completed (Fiscal Year 2021)
• Budget Amount: ¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000); Fiscal Year 2020: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000); Fiscal Year 2019: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000); Fiscal Year 2018: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000); Fiscal Year 2017: ¥7,670,000 (Direct Cost: ¥5,900,000、Indirect Cost: ¥1,770,000)
• Keywords: 沈み込み帯 / 岩石ー流体相互作用 / 脱水反応 / エクロジャイト / 蛇紋岩 / 炭酸塩化作用 / ざくろ石 / 組織発達 / 流体 / 結晶サイズ分布 / 水熱実験 / 脱水 / プレート境界 / 岩石組織 / 変成作用 / 流体活動 / 流体発生 / 機械学習 / 岩石ー水反応 / 変成岩 / 反応組織 / 蛇紋岩化作用 / フィードバック / 超臨界水熱実験 / 玄武岩 / 水圧破砕 / 離散要素法 / ２次カンラン石 / 高圧変成岩

Outline of Final Research Achievements

Fluid generation and reaction processes in subduction zones are left as mirostructures of minerals in metamorphic rocks and serpentinites. In this study, we examined the crystal size distribution and compositional zoning of garnet in eclogite of high-pressure metamorphic belt and found that crystal growth is size-dependent and that the distribution, or fluid generation rate, varies from layer to layer in the same rock. We also found that carbonation of mantle wedge-derived serpentinites is caused by the inflow of CO2 fluids originating from carboniferous materials, and that it proceeded in self-promoting ways induced by the decrease in solid volume, high pore pressure, and magnesium mobility. Furthermore, through hydrothermal experiments and geochemical modeling, it was shown that solution pH varies along the subduction zone and has a significant effect on the reaction and volume change.

Academic Significance and Societal Importance of the Research Achievements

エクロジャイト中のざくろ石、蛇紋岩の炭酸塩化、玄武岩の熱水変質など様々な組織についての解析を行い、モデリン、溶液化学の解析、水熱実験を合わせて新たな方法論を構築した。特に、蛇紋岩体の炭酸塩化作用の研究を通じて、溶液化学をベースとして、物質移動、体積変化による破壊を含めた動的なモデルを示したことは固体地球を解析するの新たなアプローチとなるとともに、沈み込み帯の地震と反応プロセスの理解にも貢献できる。

Research Products

• [Int'l Joint Research] ユトレヒト大学(オランダ)
• [Int'l Joint Research] カールスルーエ工科大学(ドイツ)
• [Journal Article] Volatile-consuming reactions fracture rocks and self-accelerate fluid flow in the lithosphere (2022)
  • Author(s): Uno Masaoki、Koyanagawa Kodai、Kasahara Hisamu、Okamoto Atsushi、Tsuchiya Noriyoshi
  • Journal Title: Proceedings of the National Academy of Sciences Volume: 119 Issue: 3
  • DOI: 10.1073/pnas.2110776118
  • Peer Reviewed
• [Journal Article] Machine-learning techniques for quantifying the protolith composition and mass transfer history of metabasalt (2022)
  • Author(s): Matsuno Satoshi、Uno Masaoki、Okamoto Atsushi、Tsuchiya Noriyoshi
  • Journal Title: Scientific Reports Volume: 12 Issue: 1
  • DOI: 10.1038/s41598-022-05109-x
  • Peer Reviewed / Open Access
• [Journal Article] Continental arc-derived eclogite in the Zavkhan Terrane, western Mongolia: Implications for the suture zone in the northern part of the Central Asian Orogenic Belt (2022)
  • Author(s): Bayarbold Manzshir、Okamoto Atsushi、Dandar Otgonbayar、Uno Masaoki、Tsuchiya Noriyoshi
  • Journal Title: Journal of Asian Earth Sciences Volume: 229 Pages: 105150-105150
  • DOI: 10.1016/j.jseaes.2022.105150
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Albite?K-feldspar?quartz equilibria in hydrothermal fluids at 400, 420°C and 20?35 MPa: Experimental measurements and thermodynamic calculations (2021)
  • Author(s): Okamoto Atsushi、Ishii Hajime、Oyanagi Ryosuke、Tsuchiya Noriyoshi
  • Journal Title: Geothermics Volume: 94 Pages: 102109-102109
  • DOI: 10.1016/j.geothermics.2021.102109
  • Peer Reviewed
• [Journal Article] Redistribution of magnetite during multi?stage serpentinization: Evidence from the Taishir Massif, Khantaishir ophiolite, western Mongolia (2021)
  • Author(s): DANDAR Otgonbayar、OKAMOTO Atsushi、UNO Masaoki、TSUCHIYA Noriyoshi
  • Journal Title: Journal of Mineralogical and Petrological Sciences Volume: 116 Issue: 3 Pages: 176-181
  • DOI: 10.2465/jmps.201130a
  • NAID: 130008065759
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Rupture of wet mantle wedge by self-promoting carbonation (2021)
  • Author(s): Okamoto Atsushi、Oyanagi Ryosuke、Yoshida Kazuki、Uno Masaoki、Shimizu Hiroyuki、Satish-Kumar Madhusoodhan
  • Journal Title: Communications Earth & Environment Volume: 2 Issue: 1 Pages: 151-151
  • DOI: 10.1038/s43247-021-00224-5
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Experimental fracture sealing in reservoir sandstones and its relation to rock texture (2021)
  • Author(s): Busch Benjamin、Okamoto Atsushi、Garbev Krassimir、Hilgers Christoph
  • Journal Title: Journal of Structural Geology Volume: 153 Pages: 104447-104447
  • DOI: 10.1016/j.jsg.2021.104447
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Generation of oxidising fluids by comminution of fault rocks (2021)
  • Author(s): Kameda J.、Okamoto A.
  • Journal Title: Geochemical Perspectives Letters Volume: - Pages: 32-35
  • DOI: 10.7185/geochemlet.2131
  • Peer Reviewed / Open Access
• [Journal Article] Cataclastic and crystal-plastic deformation in shallow mantle-wedge serpentinite controlled by cyclic changes in pore fluid pressures (2021)
  • Author(s): Hirauchi, K., Nagata, Y., Kataoka, K., Oyanagi, R., Okamoto, A., Michibayashi, K.
  • Journal Title: Earth and Planetary Science Letters Volume: 576 Pages: 117232-117232
  • DOI: 10.1016/j.epsl.2021.117232
  • Peer Reviewed
• [Journal Article] Impact of fluid pressure on failure mode in shear zones: Numerical simulation of en-echelon tensile fracturing and transition to shear (2020)
  • Author(s): Okamoto Atsushi、Fuse Kazumasa、Shimizu Hiroyuki、Ito Takatoshi
  • Journal Title: Tectonophysics Volume: 774 Pages: 228277-228277
  • DOI: 10.1016/j.tecto.2019.228277
  • Peer Reviewed
• [Journal Article] Crystallographic preferred orientation of talc determined by an improved EBSD procedure for sheet silicates: Implications for anisotropy at the slab-mantle interface due to Si-metasomatism (2020)
  • Author(s): Takayoshi Nagaya, Atsushi Okamoto, Ryosuke Oyanagi, Yusuke Seto, Akira Miyake, Masaoki Uno, Jun Muto, Simon R. Wallis
  • Journal Title: American Mineralogist Volume: in press Issue: 6 Pages: 873-893
  • DOI: 10.2138/am-2020-7006
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Thermodynamic modeling of hydrous-melt?olivine equilibrium using exhaustive variable selection (2020)
  • Author(s): Ueki Kenta、Kuwatani Tatsu、Okamoto Atsushi、Akaho Shotaro、Iwamori Hikaru
  • Journal Title: Physics of the Earth and Planetary Interiors Volume: 300 Pages: 106430-106430
  • DOI: 10.1016/j.pepi.2020.106430
  • Peer Reviewed / Open Access
• [Journal Article] Characteristics of hydrogen production with carbon storage by CO2-rich hydrothermal alteration of olivine in the presence of Mg?Al spinel (2020)
  • Author(s): Wang Jiajie、Watanabe Noriaki、Okamoto Atsushi、Nakamura Kengo、Komai Takeshi
  • Journal Title: International Journal of Hydrogen Energy Volume: in press Issue: 24 Pages: 13163-13175
  • DOI: 10.1016/j.ijhydene.2020.03.032
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Silica controls on hydration kinetics during serpentinization of olivine: Insights from hydrothermal experiments and a reactive transport model (2020)
  • Author(s): Oyanagi Ryosuke、Okamoto Atsushi、Tsuchiya Noriyoshi
  • Journal Title: Geochimica et Cosmochimica Acta Volume: 270 Pages: 21-42
  • DOI: 10.1016/j.gca.2019.11.017
  • Peer Reviewed
• [Journal Article] Formation of secondary olivine after orthopyroxene during hydration of mantle wedge: evidence from the Khantaishir Ophiolite, western Mongolia (2019)
  • Author(s): Otgonbayar Dander, Atsushi Okamoto, Masaaki Uno, Ryosuke Oyanagi, Takayoshi Nagaya, Ulziiburen Burenjargal, Tsuyoshi Miyamoto, Noriyoshi Tsuchiya
  • Journal Title: Contributions to Mineralogy and Petrology Volume: 174:86 Issue: 11 Pages: 1-22
  • DOI: 10.1007/s00410-019-1623-1
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Pyroxene control of H2 production and carbon storage during water-peridotite-CO2 hydrothermal reactions (2019)
  • Author(s): Wang Jiajie、Watanabe Noriaki、Okamoto Atsushi、Nakamura Kengo、Komai Takeshi
  • Journal Title: International Journal of Hydrogen Energy Volume: 44 Issue: 49 Pages: 26835-26847
  • DOI: 10.1016/j.ijhydene.2019.08.161
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Geological and engineering features of developing ultra-high-temperature geothermal systems in the world (2019)
  • Author(s): Okamoto, K., Asanuma, H., Ishibashia, T., Yamaya, Y., Saishua, H., Yanagisawa, N., Mogi, T., Tsuchiya, N., Okamoto, A., Naganawa, S., Ogawa, Y., Ishitsuka, K., Fujimitsu, Y., Kitamura, K., Kajiwara, T., Horimoto, S., Shimadai, K.
  • Journal Title: Geothermics Volume: 82 Pages: 267-281
  • DOI: 10.1016/j.geothermics.2019.07.002
  • Peer Reviewed
• [Journal Article] Enhanced hydrogen production with carbon storage by olivine alteration in CO2-rich hydrothermal environments (2019)
  • Author(s): Wang Jiajie、Watanabe Noriaki、Okamoto Atsushi、Nakamura Kengo、Komai Takeshi
  • Journal Title: Journal of CO2 Utilization Volume: 30 Pages: 205-213
  • DOI: 10.1016/j.jcou.2019.02.008
  • Peer Reviewed
• [Journal Article] Acceleration of hydrogen production during water-olivine-CO2 reactions via high-temperature-facilitated Fe(II) release (2019)
  • Author(s): Wang Jiajie、Watanabe Noriaki、Okamoto Atsushi、Nakamura Kengo、Komai Takeshi
  • Journal Title: International Journal of Hydrogen Energy Volume: 23 Issue: 23 Pages: 11514-11524
  • DOI: 10.1016/j.ijhydene.2019.03.119
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Silica nanoparticles produced by explosive flash vaporization during earthquakes (2019)
  • Author(s): Amagai, T., Okamoto, A., Niibe, T., Hirano, N., Motomiya, K., Tsuchiya, N.
  • Journal Title: Scientific Reports Volume: 9 Issue: 1 Pages: 9738-9738
  • DOI: 10.1038/s41598-019-46320-7
  • Peer Reviewed / Open Access
• [Journal Article] Al-zoning of serpentine aggregates in mesh texture induced by metasomatic replacement reactions (2018)
  • Author(s): Ryosuke Oyanagi, Atsushi Okamoto, Yumiko Harigane, Noriyoshi Tsuchiya
  • Journal Title: Journal of Petrology Volume: 印刷中 Issue: 4 Pages: 613-634
  • DOI: 10.1093/petrology/egy039
  • Peer Reviewed
• [Journal Article] Recovering the past history of natural recording media by Bayesian inversion (2018)
  • Author(s): Kuwatani T, Nagao H, Ito SI, Okamoto A, Yoshida K Okudaira T
  • Journal Title: Physical Review E Volume: 98 Issue: 4 Pages: 043311-043311
  • DOI: 10.1103/physreve.98.043311
  • Peer Reviewed / Open Access
• [Journal Article] Loop energy: A useful indicator of the hardness of minerals from depth-sensing indentation tests (2018)
  • Author(s): Masuda Toshiaki、Omori Yasutomo、Sakurai Ryoko、Miyake Tomoya、Yamanouchi Mirai、Harigane Yumiko、Okamoto Atsushi、Michibayashi Katsuyoshi
  • Journal Title: Journal of Structural Geology Volume: 117 Pages: 96-104
  • DOI: 10.1016/j.jsg.2018.09.004
  • NAID: 120006547578
  • Peer Reviewed / Open Access
• [Journal Article] Multiple Kinetic Parameterization in a Reactive Transport Model Using the Exchange Monte Carlo Method (2018)
  • Author(s): Oyanagi Ryosuke、Okamoto Atsushi、Tsuchiya Noriyoshi
  • Journal Title: Minerals Volume: 8 Issue: 12 Pages: 579-579
  • DOI: 10.3390/min8120579
  • Peer Reviewed / Open Access
• [Journal Article] Drone brings new advance of geological mapping in Mongolia: Opportunities and challenges (2018)
  • Author(s): Dandar Otgonbayar、Okamoto Atsushi、Uno Masaoki、Batsaikhan Undarmaa、Ulziiburen Burenjargal、Tsuchiya Noriyoshi
  • Journal Title: Mongolian Geoscientist Volume: - Issue: 47 Pages: 53-57
  • DOI: 10.5564/mgs.v0i47.1063
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Information extraction from metamorphic rock textures and compositional zoning of minerals: (2017)
  • Author(s): Okamoto Atsushi、Kuwatani Tatsu
  • Journal Title: The Journal of the Geological Society of Japan Volume: 123 Issue: 9 Pages: 733-745
  • DOI: 10.5575/geosoc.2017.0034
  • NAID: 130006279051
  • ISSN: 0016-7630, 1349-9963
  • Year and Date: 2017-09-15
  • Peer Reviewed / Open Access
• [Journal Article] Excess water generation during reaction-inducing intrusion of granitic melts into ultramafic rocks at crustal P-T conditions in the Sor Rondane Mountains of East Antarctica (2017)
  • Author(s): Masaoki Uno, Atsushi Okamoto, Noriyoshi Tsuchiya
  • Journal Title: Lithos Volume: 284-285 Pages: 625-641
  • DOI: 10.1016/j.lithos.2017.04.016
  • Peer Reviewed / Open Access
• [Journal Article] Reaction-induced grain boundary cracking and anisotropic fluid flow during prograde devolatilization reactions within subduction zones (2017)
  • Author(s): Okamoto, A., Shimizu, H., Fukuda, J., Muto, J., Okudaira, T.
  • Journal Title: Contributions to Mineralogy and Petrology Volume: 182
  • Peer Reviewed
• [Journal Article] Silica precipitation potentially controls earthquake recurrence in seismogenic zones (2017)
  • Author(s): Saishu, H., Okamoto, A., Otsubo, M.
  • Journal Title: Scientific Reports Volume: 7 Issue: 1 Pages: 13337-13337
  • DOI: 10.1038/s41598-017-13597-5
  • Peer Reviewed / Open Access
• [Journal Article] Fluid pocket generation in response to heterogeneous reactivity of a rock fracture under hydrothermal conditions (2017)
  • Author(s): Okamoto, A., Tanaka, H., Watanabe, N., Siashu, H., Tsuchiya, N.
  • Journal Title: Geophysical Research Letters Volume: 44 Issue: 20 Pages: 10306-10315
  • DOI: 10.1002/2017gl075476
  • Peer Reviewed / Open Access
• [Presentation] Simultaneous replacement of plagioclase by albite and K-feldspar: natural evidence and hydrothermal experiments (2021)
  • Author(s): Astin Nurdiana, Atsushi Okamoto, Masaoki Uno, and Noriyoshi Tsuchiya
  • Organizer: European Geoscience Union
  • Int'l Joint Research
• [Presentation] Crustal fluid pressure gradients and permeability evolutions estimated from metamorphic fluid-rock reaction zones (Sor Rondane Mountains, East Antarctica) (2021)
  • Author(s): Masaoki Uno, Diana Mindaleva, Atsushi Okamoto, and Noriyoshi Tsuchiya
  • Organizer: European Geoscience Union
  • Int'l Joint Research
• [Presentation] Magnetite redistribution during multi-stage serpentinization: Evidence from the Taishir massif, Khantaishir ophiolite, western Mongolia (2021)
  • Author(s): Otgonbayar DANDAR, Atsushi OKAMOTO, Masaoki UNO, Noriyoshi TSUCHIYA
  • Organizer: European Geoscience Union
  • Int'l Joint Research
• [Presentation] Episodic fluid explosion in shallow and middle crust revealed by hydrothermal brecciation (2021)
  • Author(s): Geri Agroli,Tatsuya Takemori, Atsushi Okamoto, Masaoki Uni, Noriyoshi Tsuchiya
  • Organizer: 日本地球惑星科学連合
• [Presentation] Crystal size distribution of garnet formed by two-stage growth in the Kotsu eclogite, Sanbagawa belt (2021)
  • Author(s): Otgonbayar Dandar, Atsushi Okamoto, Masaoki Uno
  • Organizer: 日本地球惑星科学連合
• [Presentation] Newly discovered eclogite in the Khungui zone, Zavkhan Terrane, Western Mongolia: P-T evolution and tectonic implication (2021)
  • Author(s): Bayarbold Manzshir, Atsushi Okamoto, Otgonbayar Dandar, Masaoki Uno, Noriyoshi Tsuchiya
  • Organizer: 日本地球惑星科学連合
• [Presentation] The effect of fluid compositions on pore formation during plagioclase replacement under supercritical conditions (2021)
  • Author(s): Astin Nurdiana, Atsushi Okamoto, Masaoki Uno, and Noriyoshi Tsuchiya
  • Organizer: 日本地球惑星科学連合
• [Presentation] Serpentinization and Fe(III) distribution along the crust-mantle section of the oceanic lithosphere: insights from the Oman Drilling CM1A site (2021)
  • Author(s): Atsushi Okamoto, Kazuki Yoshida, Ryosuke Oyanagi, Yasuhiro Niwa, Yasuo Takeichi, Masao Kimura
  • Organizer: 日本地球惑星科学連合
• [Presentation] 岩石ー流体反応が駆動する地圏環境とその有効利用 (2021)
  • Author(s): 岡本 敦
  • Organizer: 資源・素材学会 東北支部春季大会
  • Invited
• [Presentation] 体積膨張反応によるリソスフェアの破壊と流体移動の自己加速化：MgO-H2O実験系からの制約 (2021)
  • Author(s): 宇野正起，岡本敦，土屋範芳
  • Organizer: 日本地質学会
• [Presentation] オマーンオフィオライト地殻―マントル遷移帯 におけるアンチゴライト脈形成と流体流動 (2021)
  • Author(s): 吉田一貴、岡本 敦、大柳良介、木村正雄
  • Organizer: 日本地質学会
• [Presentation] Formation of garnet aggregate of the Khungui eclogite in the Zavkhan Terrane, Western Mongolia (2021)
  • Author(s): バヤボルド・マンズシル、岡本 敦、ダンダル・オトゴンバヤル、宇野正起、土屋範芳
  • Organizer: 日本地質学会
• [Presentation] Rupture of serpentinized mantle wedge induced by self-promoting carbonation (2021)
  • Author(s): Atsushi Okamoto, Ryosuke Oyanagi, Kazuki Yoshida, Masaoki Uno, Hiroyuki Shimizu, Madhusoodhan Satish-Kumar
  • Organizer: International Joint Workshop on Slow Earthquakes 2021
  • Int'l Joint Research
• [Presentation] Formation of fracture network and permeability enhancement during olivine hydration within oceanic lower crust (2020)
  • Author(s): Kazuki Yoshida, Atsushi Okamoto, Ryosuke Oyanagi, Hiroyuki Shimizu, Noriyoshi Tsuchiya
  • Organizer: International Conference on Ophiolites and the Oceanic Lithosphere
• [Presentation] Super-resolution of X-ray CT images of rock core samples by sparse representation : methodology and applications to serpetinized peridotite from CM1A (2020)
  • Author(s): Atsushi Okamoto, Toshiaki Omori, Masao Kimura, Katsuyoshi Michibayashi Oman Drilling Project Phase 2 Science Party
  • Organizer: International Conference on Ophiolites and the Oceanic Lithosphere
• [Presentation] Formation of silica particles from supercritical fluids and its impacts on the hydrological properties in the crust (2019)
  • Author(s): Atsushi Okamoto
  • Organizer: European Geoscience Union (EGU) General Aseembly2019
  • Int'l Joint Research / Invited
• [Presentation] NaHCO3-promoted H2 Production during Water-Olivine Reactions under High-temperature conditions (2019)
  • Author(s): J. Wang, N. Watanabe, A. Okamoto, K. Nakamura, T. Komai
  • Organizer: 17th International Conference on Carbon Dioxide Utilization,
• [Presentation] Pyroxene control of peridotite alteration pathways and kinetics under CO2-rich hydrothermal conditions (2019)
  • Author(s): J. Wang, N. Watanabe, A. Okamoto, K. Nakamura, T. Komai
  • Organizer: 日本地球惑星科学連合（JpGU）2019年大会
• [Presentation] Hydration and Ca-metasomatism in Mantle Wedge: An evidence from the Alag Khadny Accretionary Wedge, Western Mongolia (2019)
  • Author(s): Otgonbayar Dandar, Atsushi Okamoto, Masaoki Uno, Noriyoshi Tsuchiya
  • Organizer: 日本地球惑星科学連合（JpGU）2019年大会
• [Presentation] Hydration and development of fracture network within oceanic lower crust: an evidence from CM1A of Oman Drilling (2019)
  • Author(s): 岡本 敦，大柳 良介，吉田 一貴，サティシュ クマール，宇野 正起
  • Organizer: 日本地球惑星科学連合（JpGU）2019年大会
  • Invited
• [Presentation] 反応誘起応力による地殻応力発生と浸透率発展：MgO-H2O系での測定 (2019)
  • Author(s): 宇野 正起，笠原 久夢，岡本 敦，土屋 範芳
  • Organizer: 日本地球惑星科学連合（JpGU）2019年大会
• [Presentation] 層状はんれい岩の加水反応に起因したき裂形成に関する数値シミュレーション (2019)
  • Author(s): 吉田 一貴，清水 浩之，土屋 範芳，岡本 敦，Oman Drilling Project Phase 2 Science Party
  • Organizer: 日本地球惑星科学連合（JpGU）2019年大会
• [Presentation] Development of reaction-induced stress and permeability in MgO-H2O system (2019)
  • Author(s): 笠原久夢，宇野正起，岡本敦，土屋範芳
  • Organizer: 日本地球惑星科学連合（JpGU）2019年大会
• [Presentation] Evolution of fluid chemistry during basalt-water and basalt-seawater interactions revealed by hydrothermal flow-through experiments (2019)
  • Author(s): 根津勇介，岡本敦，平野伸夫, 宇野正起，土屋範芳
  • Organizer: 日本地球惑星科学連合（JpGU）2019年大会
• [Presentation] Porosity generation during feldspar replacement as the mark of potassium-rich supercritical fluids on the top of granitic intrusion (2019)
  • Author(s): A. Nurdiana, A. Okamoto, M. Uno, K. Yoshida, N. Tsuchiya
  • Organizer: 日本地球惑星科学連合（JpGU）2019年大会
• [Presentation] Short fluid infiltration events in the low permeable metamorphic rocks triggered by crustal fracturing at amphibolite-granulite facies conditions (2019)
  • Author(s): Diana Mindaleva, Masaoki Uno, Fumiko Higashino, Atsushi Okamoto, Noriyoshi Tsuchiya
  • Organizer: 日本地球惑星科学連合（JpGU）2019年大会
• [Presentation] Transport and Explosive Event of Supercritical Geofluid Revealed by Poprhyry Copper Deposit (2019)
  • Author(s): ゲリアグロリ, 岡本敦, 土屋範芳
  • Organizer: 日本地球惑星科学連合（JpGU）2019年大会
• [Presentation] 多成分溶液の光散乱現象を用いた臨界点決定方法の実験的研究 (2019)
  • Author(s): 平野 伸夫，大島 悠太，岡本 敦，土屋 範芳
  • Organizer: 日本地球惑星科学連合（JpGU）2019年大会
• [Presentation] 超臨界岩石―水相互作用のための溶存種の熱力学データ：溶解実験と密度を用いた外挿 (2019)
  • Author(s): 岡本敦，石井肇，大柳良介，土屋範芳
  • Organizer: 日本地球惑星科学連合（JpGU）2019年大会
• [Presentation] Transport and Explosive Event of Supercritical Geofluid Revealed by Poprhyry Copper Deposit (2019)
  • Author(s): Geri Agroli, Atsushi Okamoto, Noriyoshi Tsuchiya
  • Organizer: 日本地球惑星科学連合（JpGU）2019年大会
• [Presentation] CRUSTAL PERMEABILITY REVEALED BY METAMORPHIC PROCESSES AND RAPID INFILTRATION OF GEOFLUIDS (2019)
  • Author(s): Diana Mindaleva, Masaoki Uno, Atsushi Okamoto, Noriyoshi Tsuchiya
  • Organizer: Geothermal Volcanology Workshop
  • Int'l Joint Research
• [Presentation] MgO - H2O 系 における反応誘起破壊と透水率の時間発展 (2019)
  • Author(s): 笠原久夢，宇野正起，岡本敦，土屋範芳
  • Organizer: 日本鉱物科学会（JAMS）2019年年会
• [Presentation] 超臨界流通式水熱実験による玄武岩 - 海水系における元素の選択的溶脱に伴う変質過程 (2019)
  • Author(s): 根津勇介，岡本敦，平野伸夫, 宇野正起，土屋範芳
  • Organizer: 日本鉱物科学会（JAMS）2019年年会
• [Presentation] Geological evidences of short fluid activity at crustal P-T conditions in the low permeable metamorphic rocks triggered by crustal fracturing (2019)
  • Author(s): Diana Mindaleva, Masaoki Uno, Atsushi Okamoto, Noriyoshi Tsuchiya
  • Organizer: International Joint Workshop on Slow Earthquakes
• [Presentation] 海洋リソスフェアの蛇紋岩化作用に伴うき裂ネットワーク： 数値モデリングと特徴量抽出 (2019)
  • Author(s): 吉田一貴，清水浩之，岡本 敦，土屋範芳
  • Organizer: 日本地質学会（JGS）第126年学術大会
• [Presentation] 断層面におけるシリカ粒子の形成と運搬による流体圧変動に関する実験的検討 (2019)
  • Author(s): 新部貴理, 岡本敦, 土屋範芳
  • Organizer: 日本地質学会（JGS）第126年学術大会
• [Presentation] 蛇紋岩体中のドロマイトー滑石脈の形成と泥質片岩境界との反応帯：三波川帯関東山地長瀞の例 (2019)
  • Author(s): 岡本 敦，大柳 良介，吉田 一貴，サティシュ クマール，宇野 正起
  • Organizer: 日本地質学会（JGS）第126年学術大会
• [Presentation] 沈み込み帯マントルウェッジにおける分布不均一なブルース石のアンチゴライトとの脱水分解過程における空隙ネットワークの発生と発達 (2019)
  • Author(s): 永冶 方敬, 岡本 敦, 木戸 正紀, 武藤 潤, ウォリス サイモン
  • Organizer: 日本地質学会（JGS）第126年学術大会
• [Presentation] Crustal permeability and timescales estimated from metamorphic fluid-rock reaction zones. (2019)
  • Author(s): Diana Mindaleva, Masaoki Uno, Atsushi Okamoto, Noriyoshi Tsuchiya
  • Organizer: 日本地熱学会（GRSJ）2019年熊本大会
• [Presentation] Indication of fluid injection by overpressurized-supercritical fluid revealed in the porphryy copper system (2019)
  • Author(s): Geri Agroli, Atsushi Okamoto, Noriyoshi Tsuchiya
  • Organizer: 日本地熱学会（GRSJ）2019年熊本大会
• [Presentation] 超臨界条件への溶存種の熱力学データの拡張と実験的検証 (2019)
  • Author(s): 石井肇, 岡本敦, 土屋範芳
  • Organizer: 日本地熱学会（GRSJ）2019年熊本大会
• [Presentation] 超臨界地熱流体のフラッシングによるシリカナノ粒子の形成 (2019)
  • Author(s): 岡本 敦，新部貴理，天谷宇志，平野伸夫，土屋範芳
  • Organizer: 日本地熱学会（GRSJ）2019年熊本大会
• [Presentation] オマーンオフィオライトの層状斑れい岩の加水反応とき裂形成シミュレーション (2019)
  • Author(s): 吉田一貴，岡本敦，清水浩之，土屋範芳
  • Organizer: 東京大学大気海洋研究所共同研究集会
• [Presentation] 沈み込み帯スラブーマントル境界における強いtalc CPOの形成 (2019)
  • Author(s): 永冶 方敬, 岡本 敦, 大柳 良介, 瀬戸雄介, 三宅亮, 宇野正起, 武藤潤, ウォリス サイモン
  • Organizer: 変成岩などシンポジウム2019
• [Presentation] シリカ粒子と流体圧振動 (2019)
  • Author(s): 岡本 敦
  • Organizer: 変成岩などシンポジウム2019
• [Presentation] Comparing silica precipitation via flash vaporization and fluid flow under sub- and supercritical conditions (2019)
  • Author(s): Takamasa Niibe, Atsushi Okamoto, Takashi Amagai, Noriyoshi Tsuchiya
  • Organizer: 16th International Symposium on Water Dynamics
  • Int'l Joint Research
• [Presentation] Hydrothermal experiments on supercritical water-rock interaction: thermodynamic data and silica (2019)
  • Author(s): Atsushi Okamoto
  • Organizer: 16th internationall symposium on Water Dynamics, March 12, Sendai
  • Int'l Joint Research / Invited
• [Presentation] Formation of secondary olivine after orthopyroxene induced by highly oxidizing fluid in the mantle wedge: An evidence from the Khantaishir Ophiolite, western Mongolia, JSPS-DST Japan-India Forum for Advanced Study (2019)
  • Author(s): Otgonbayar Dandar, Atsushi Okamoto, Masaoki Uno, Noriyoshi Tsuchiya
  • Organizer: JSPS-DST Japan-India Forum for Advanced Study
  • Int'l Joint Research
• [Presentation] Formation of Pseudomorphs after Orthopyroxene during serpentinization and Ca-metasomatism of mantle wedge (the Alag Khadny accretionary wedge, the Chandman area, western Mongolia) (2019)
  • Author(s): Otgonbayar Dandar, Atsushi Okamoto, Masaoki Uno, Noriyoshi Tsuchiya
  • Organizer: 16th International Workshop on Water Dynamics
  • Int'l Joint Research
• [Presentation] Pore network of feldspar replacement as the mark of potassium-rich supercritical fluids on the top of granitic intrusion, (2019)
  • Author(s): A. Nurdiana, A. Okamoto, M. Uno, N. Tsuchiya
  • Organizer: 16th International Workshop on Water Dynamics
  • Int'l Joint Research
• [Presentation] Pore network of feldspar replacement as the mark of potassium-rich supercritical fluids on the top of granitic intrusion (2019)
  • Author(s): A. Nurdiana, A. Okamoto, M. Uno, N. Tsuchiya
  • Organizer: JSPS-DST Japan-India Forum for Advanced Study
  • Int'l Joint Research
• [Presentation] マイクロブーディン応力計を用いた方位別岩石応力解析による主偏差応力の推定 (2018)
  • Author(s): 松村 太郎次郎, 岡本 敦，増田 俊明
  • Organizer: 日本地質学会第125年学術大会
• [Presentation] CO2リッチ水熱環境における橄欖石の加速風化を用いた水素生成と炭素固定 (2018)
  • Author(s): Jiajie Wang, Noriaki Watanabe, Kengo Nakamura, Atsushi Okamoto, Takeshi Komai
  • Organizer: 日本地熱学会平成30年学術講演会（東京大会）
• [Presentation] 数値シミュレーションと組み合わせた構造解析による蛇紋岩の形成メカニズム推定 (2018)
  • Author(s): 宮澤美幸, 鈴木杏奈, 岡本敦, 清水浩之, 大林一平, 平岡裕章, 伊藤高敏
  • Organizer: 日本地質学会第125年学術大会（2018つくば特別大会）
• [Presentation] パーシステントホモロジーを用いた岩石き裂構造解析 (2018)
  • Author(s): 鈴木杏奈, 宮澤美幸, 岡本敦, 清水浩之, 平岡裕章, 大林一平, 伊藤高敏
  • Organizer: 日本地球惑星科学連合2018年大会
• [Presentation] アモルファスシリカの亜臨界・超臨界環境における相変化の速度論的検討 (2018)
  • Author(s): 新部 貴理, 岡本 敦, 天谷 宇志, 土屋 範芳
  • Organizer: 日本鉱物科学会2018年年会
• [Presentation] CO2 地中貯留条件下における火山性砂岩の力学特性変化 (2018)
  • Author(s): 服部 晃己・渡邉 則昭・岡本 敦・中村 謙吾・駒井 武，玉川 哲也
  • Organizer: 平成30 年度（2018年）石油技術協会. 春季講演会
• [Presentation] 高温延性花崗岩き裂における圧力溶解・自由表面溶解による透水性変化 (2018)
  • Author(s): 斎藤 耕平・渡邉 則昭・岡本 敦・土屋 範芳・駒井 武・石橋 琢也・最首 花恵・渡邉 教弘
  • Organizer: 日本地熱学会 平成３０年東京大会
• [Presentation] 三軸圧縮下の超臨界CO2－塩水－岩石反応にともなう火山性砂岩の力学特性変化 (2018)
  • Author(s): 服部 晃己・渡邉 則昭・中村 謙吾・岡本 敦・駒井 武，玉川 哲也
  • Organizer: 資源素材学会東北支部 平成３０年度春季大会
• [Presentation] 超臨界地熱環境下における水-岩石反応にともなう花崗岩き裂の透水性変化 (2018)
  • Author(s): 斎藤 耕平，渡邉 則昭，岡本 敦，土屋 範芳，駒井 武，石橋 琢也，最首 花恵
  • Organizer: 資源素材学会東北支部 平成３０年度春季大会
• [Presentation] 交換モンテカルロ法を用いた蛇紋岩化作用におけるSi交代作用メカニズムの解明 (2018)
  • Author(s): 大柳 良介、岡本 敦、土屋 範芳
  • Organizer: 日本地球惑星科学連合2018年大会
• [Presentation] Time scales of Cl-bearing fluid infiltration and permeability estimated by reactive transport modelling for granulite/amphibolite-hosted reaction zones, So;r Rondane Mountains, East Antarctica (2018)
  • Author(s): Diana Mindaleva、Masaoki Uno、Fumiko Higashino、Takayoshi Nagaya、Ryosuke Oyanagi、Atsushi Okamoto、Noriyoshi Tsuchiya
  • Organizer: 日本地球惑星科学連合2018年大会
• [Presentation] 海洋底蛇紋岩作用におけるSi交代作用の律速過程 (2018)
  • Author(s): 大柳 良介、岡本 敦、土屋 範芳
  • Organizer: 日本地質学会第125年学術大会
• [Presentation] 地熱地帯の超臨界条件下の岩石－水相互作用と熱水変成作用の理解に向けて (2018)
  • Author(s): 岡本 敦、根津 勇介、天谷 宇志、土屋 範芳
  • Organizer: 日本地球惑星科学連合2018年大会（口頭）
• [Presentation] 超臨界条件の岩石―水相互作用と斜長石の溶解・析出 (2018)
  • Author(s): 岡本 敦、天谷 宇志、大柳 良介、Astin Nurdiana, 土屋 範芳
  • Organizer: 日本地質学会第125年学術大会（2018つくば特別大会）
• [Presentation] 超臨界条件の水―岩石相互作用の理解のための熱力学データ構築の試み (2018)
  • Author(s): 岡本 敦、大柳 良介、天谷 宇志、Astin Nurdiana, 土屋 範芳
  • Organizer: 日本地熱学会 平成30年東京大会
• [Presentation] Ca-metasomatism of the Mantle: an example from the Khantaishir ophiolite in the chandman area, western Mongolia (2018)
  • Author(s): Otgonbayar Dandar, Atsushi Okamoto, Masaoki Uno, Noriyoshi Tsuchiya
  • Organizer: Japan Association of mineralogical Science (JAMS) meeting 2018
• [Presentation] Crystal Preferred Orientation of Secondary Olivine Formed after Orthopyroxene in Mantle Wedge during Serpentinization from the Khantaishir Ophiolite, Western Mongolia (2018)
  • Author(s): Otgonbayar Dandar, Atsushi Okamoto, Masaoki Uno, Takayoshi Nagaya, Noriyoshi Tsuchiya
  • Organizer: Japan Geoscience Union (JpGU) meeting 2018
• [Presentation] Mantle Wedge Metasomatic Hydration; Evidence from the Khantaishir Ophiolite, Western Mongolia (2018)
  • Author(s): Otgonbayar Dandar, Atsushi Okamoto, Masaoki Uno, Noriyoshi Tsuchiya
  • Organizer: Japan Geoscience Union (JpGU) meeting 2018
• [Presentation] Fluids transport and High temperature metamorphism related to Granitic Pegmatite Complex in Kinka-san Island, NE Japan (2018)
  • Author(s): A. Nurdiana, A. Okamoto, M. Uno, N. Tsuchiya
  • Organizer: Japan Geoscience Union (JpGU) meeting 2018
• [Presentation] Fluids transport and magma-driven metamorphism related to Granitic Pegmatite Complex in Kinka-san Island, NE Japan Earth (2018)
  • Author(s): A. Nurdiana, A. Okamoto, M. Uno, N. Tsuchiya
  • Organizer: Sea and Sky III: International Joint Graduate Program Workshop in Earth and Environmental Sciences
• [Presentation] Pore throat network by feldspar replacement with potassium-rich fluids on the top of granitic magma during supercritical fluid processes (2018)
  • Author(s): A. Nurdiana, A. Okamoto, M. Uno, N. Tsuchiya
  • Organizer: 日本鉱物科学会2018年年会
• [Presentation] 超臨界における玄武岩の熱水変成反応プロセスと物質移動 (2018)
  • Author(s): 根津勇介、岡本敦、平野伸夫、宇野正起、土屋範芳
  • Organizer: 日本鉱物科学会2018年年会
• [Presentation] 吸水反応における反応誘起応力の反応速度・変形速度依存性：MgO- H2O系における実験的研究 (2018)
  • Author(s): 笠原 久夢, 宇野 正起, 岡本 敦, 土屋 範芳
  • Organizer: 日本鉱物科学会2018年年会
• [Presentation] 350-450℃水熱反応によるアパタイト中のハロゲン置換反応実験 (2018)
  • Author(s): 杉沢 直樹, 東野 文子, 宇野 正起, 岡本 敦, 土屋 範芳
  • Organizer: 日本鉱物科学会2018年年会
• [Presentation] グラニュライト・角閃岩相反応帯における多元微量元素解析による含Cl流体の浸透の時間スケール (2018)
  • Author(s): ミンダリョワ ディアナ, 宇野 正起, 東野 文子, 岡本 敦, 土屋 範芳, 東南極セールロンダーネ山地
  • Organizer: 日本鉱物科学会2018年年会
• [Presentation] Silica precipitation and formation of mineralized vein induced by flash vaporization of sub- to supercritical fluids (2018)
  • Author(s): 天谷 宇志、岡本 敦、平野 伸夫、最首 花恵、土屋 範芳
  • Organizer: 日本地球惑星科学連合2018年大会
• [Presentation] 玄武岩-水系における熱水変成作用によるザクロ石の合成 (2018)
  • Author(s): 根津 勇介、岡本 敦、宇野 正起、平野 伸夫、大柳 良介、土屋 範芳
  • Organizer: 日本地球惑星科学連合2018年大会
• [Presentation] 吸水反応による反応誘起応力の温度依存性とその支配プロセス：MgO-H2O系からの制約 (2018)
  • Author(s): 宇野 正起、笠原 久夢、岡本 敦、土屋 範芳
  • Organizer: 日本地球惑星科学連合2018年大会
• [Presentation] Time scales of Cl-bearing fluid infiltration and permeability estimated by reactive transport modelling for granulite/amphibolite-hosted reaction zones, Sor Rondane Mountains, East Antarctica (2018)
  • Author(s): Diana Mindaleva、Masaoki Uno、Fumiko Higashino、Takayoshi Nagaya、Ryosuke Oyanagi、Atsushi Okamoto、Noriyoshi Tsuchiya
  • Organizer: 日本地球惑星科学連合2018年大会
• [Presentation] NaHCO3-promoted olivine weathering with H2 generation and CO2 sequestration in alkaline hydrothermal system (2018)
  • Author(s): Jiajie Wang, Kengo Nakamura, Noriaki Watanabe, Atsushi Okamoto, Takeshi Komai
  • Organizer: 9th International Conference on Future Environment and Energy
  • Int'l Joint Research
• [Presentation] Analysis of rock fracture pattern and fluid flow by persistent homology (2018)
  • Author(s): M. Miyazawa, A. Suzuki, A. Okamoto, H. Shimizu, I. Obayashi, and T. Ito
  • Organizer: The 15th International Conference of Flow Dynamics, Sendai
  • Int'l Joint Research
• [Presentation] Application of persistent homology to fracture characterization (2018)
  • Author(s): A. Suzuki, M. Miyazawa, A. Okamoto, H. Shimizu, Y. Hiraoka, I. Obayashi, and T. Ito
  • Organizer: Asia Oceania Geosciences Society 15th Annual Meeting, Honolulu
  • Int'l Joint Research
• [Presentation] Experimental Investigation on Changes in Mechanical Properties of Volcanic Sandstones Under CO2 Geological Storage Conditions (2018)
  • Author(s): Koki Hattori, Noriaki Watanabe, Atsushi Okamoto, Kengo Nakamura, Takeshi Komai, Tetsuya Tamagawa
  • Organizer: 10th Asian Rock Mechanics Symposium, 29 October to 03 November, 2018, Singapore
  • Int'l Joint Research
• [Presentation] Hydrothermal experiments on olivine-quartz-seawater system at 300° C: implication for the progress of silica-metasomatism during serpentinization at the crust-mantle boundary in the oceanic lithosphere. (2018)
  • Author(s): Oyanagi, R., A. Okamoto, and N. Tsuchiya
  • Organizer: American Geophysics Union Fall Meeting Abstracts. 2018
  • Int'l Joint Research
• [Presentation] Hydrothermal Alteration of the Crust-Mantle Transition and Upper Mantle in the Samail Ophiolite: Insights from Holes CM1A and CM2B of the Oman Drilling Project (2018)
  • Author(s): Gretchen L. Fruh-Green, Marta Grabowska, Ryosuke Oyanagi, Kosuke Kimura, Frieder Klein, Atsushi Okamoto, Tomoaki Morishita, Nehal Warsi, Akihiro Tamura, Damon A. H. Teagle, Eichi Takazawa, Jude Ann Coogan, Peter B. Kelemen, Jurg M. Matter and the OmanDP Phase 2 Science Party
  • Organizer: American Geophysics Union Fall Meeting Abstracts. 2018
  • Int'l Joint Research
• [Presentation] Simultaneous H2 production with carbon storage by enhanced olivine weathering in laboratory-scale: An investigation of CO2 effect (2018)
  • Author(s): Jiajie Wang, Kengo Nakamura, Noriaki Watanabe, Atsushi Okamoto, Takeshi Komai
  • Organizer: The Second International Conference on Materials Chemistry and Environmental Protection
  • Int'l Joint Research
• [Presentation] Silica nanoparticles produced by flash vaporization and their rapid diagenesis in hydrothermal fluids (2018)
  • Author(s): Atsushi Okamoto, Takashi Amagai, Nobuo Hirano, Hanae Saishu, Noriyoshi Tscuhiy
  • Organizer: European Geoscience Union 2018
  • Int'l Joint Research
• [Presentation] Some unsolved problems on supercritical water-rock interaction (2018)
  • Author(s): Atsushi Okamoto
  • Organizer: 15th International Workshop on WATER DYNAMICS
  • Int'l Joint Research / Invited
• [Presentation] Applications of Persistent Homology to Fracture Characterization (2018)
  • Author(s): Anna Suzuki, Miyuki Miyazawa, Atsushi Okamoto, Hiroyuki Shimizu, Yasuaki Hiraoka, Ippei Obayashi, Takatoshi Ito
  • Organizer: AOGS 15th Annual Meeting
  • Int'l Joint Research
• [Presentation] パーシステントホモロジーを用いた岩石き裂構造解析 (2018)
  • Author(s): 鈴木 杏奈、宮澤 美幸、岡本 敦、清水 浩之、平岡 裕章、大林 一平、伊藤 高敏
  • Organizer: 日本地球惑星科学連合2018年大会
• [Presentation] 地熱地帯の超臨界条件下の岩石－水相互作用と熱水変成作用の理解に向けて (2018)
  • Author(s): 岡本敦、根津祐介、天谷宇志、土屋範芳
  • Organizer: 日本地球惑星科学連合2018年大会
• [Presentation] 岩石－水反応の理解に向けた水熱実験とデータ駆動型アプローチ (2018)
  • Author(s): 岡本敦、桑谷 立、土屋範芳
  • Organizer: 日本地球惑星科学連合2018年大会
• [Presentation] 個別要素法シミュレーションによるせん断帯き裂構造に及ぼす応力状態の影響の解析 (2018)
  • Author(s): 布施和正、岡本敦、伊藤高敏、清水博之
  • Organizer: 日本地球惑星科学連合2018年大会
• [Presentation] Mantle Wedge Metasomatic Hydration: Evidence from the Khantaishir Ophiolite, Western Mongolia (2018)
  • Author(s): Otgonbayar DANDAR, Atsushi OKAMOTO, Masaoki UNO, Noriyoshi TSUCHIYA
  • Organizer: 日本地球惑星科学連合2018年大会
• [Presentation] Fluids transport and High temperature metamorphism related to Granitic Pegmatite Complex in Kinka-san Island, NE Japan (2018)
  • Author(s): Nurdiana, A. Okamoto, A., Uno, M., Tsuchiya, N.
  • Organizer: 日本地球惑星科学連合2018年大会
• [Presentation] Crystal Preferred Orientation of Secondary Olivine Formed after Orthopyroxene in Mantle Wedge during Serpentinization from the Khantaishir Ophiolite, Western Mongolia (2018)
  • Author(s): Otgonbayar DANDAR, Atsushi OKAMOTO, Takayoshi NAGAYA, Masaoki UNO, Noriyoshi TSUCHIYA
  • Organizer: 日本地球惑星科学連合2018年大会
• [Presentation] 吸水反応による反応誘起応力の温度依存性とその支配プロセス：MgO-H2O系からの制約 (2018)
  • Author(s): 宇野正起，笠原久夢，岡本敦，土屋範芳
  • Organizer: 日本地球惑星科学連合2018年大会
• [Presentation] MgO-H2O系における反応誘起応力の直接測定 (2018)
  • Author(s): 笠原久夢，宇野正起，岡本敦，土屋範芳
  • Organizer: 日本地球惑星科学連合2018年大会
• [Presentation] Time scales of Cl-bearing fluid infiltration and permeability estimated by reactive transport modelling for granulite/amphibolite-hosted reaction zones, Sor Rondane Mountains, East Antarctica (2018)
  • Author(s): Diana Mindaleva, Masaoki Uno, Fumiko Higashino, Takayoshi Nagaya, Ryosuke Oyanagi, Atsushi Okamoto, Noriyoshi Tsuchiya
  • Organizer: 日本地球惑星科学連合2018年大会
• [Presentation] Silica nanoparticles produced by flash vaporization and their rapid diagenesis in hydrothermal fluids (2018)
  • Author(s): Atsushi Okamoto, Takashi Amagai, Nobuo Hirano, and Noriyoshi Tsuchiya
  • Organizer: EGU General Assembly 2018
  • Int'l Joint Research
• [Presentation] Model selection on chemical kinetics during water-rock interaction using exchange Monte Carlo method (2017)
  • Author(s): Ryosuke Oyanagi, Atsushi Okamoto, Noriyoshi Tsuchiya
  • Organizer: International Meeting on “High-Dimensional Data-Driven Science” (HD3-2017)
  • Int'l Joint Research
• [Presentation] Grain boundary sliding as an antigorite CPO formation mechanism (2017)
  • Author(s): Simon Wallis, Takayoshi Nagaya, Atsushi Okamoto, Seiichiro Uehara, Katsuyoshi Michibayashi, Aya Nishii
  • Organizer: Joint Workshop on Slow Earthquakes
• [Presentation] Fracture network created by 3D printer and its validation using CT images (2017)
  • Author(s): Miyuki Miyazawa, Anna Suzuki, Hiroyuki Shimizu, Atsushi Okamoto, Yasuaki Hiraoka, Ippei Obayashi, Takashi Tsuji, Takatoshi Ito
  • Organizer: 2017 AGU Fall Meeting, New Orleans
  • Int'l Joint Research
• [Presentation] 花崗岩亀裂におけるシリカの溶解・析出と深部地熱貯留層の間隙変化 (2017)
  • Author(s): 岡本 敦・田中 寛人・渡邉 則昭
  • Organizer: 日本地球惑星科学連合2017年大会
• [Presentation] シリカ析出と流体流動―石英とアモルファスと鉱物脈 (2017)
  • Author(s): 岡本 敦
  • Organizer: 日本地質学会第 124 年学術大会
• [Presentation] アイスランドIDDP-2 サイトの地質学的特徴 (2017)
  • Author(s): 岡本敦, 土屋範芳
  • Organizer: 日本地熱学会
• [Presentation] 水熱条件下の花崗岩亀裂の不均質な反応性に起因した流体だまりの形成 (2017)
  • Author(s): 岡本 敦・田中 寛人・渡邉 則昭・最首 花恵・土屋 範芳
  • Organizer: 日本地熱学会
• [Presentation] 海洋底の蛇紋岩化に伴う物質移動とメッシュ組織 (2017)
  • Author(s): 岡本敦, 大柳良介,針金由美子，土屋範芳
  • Organizer: Inter-Ridge-Japan 研究集会
• [Presentation] Unraveling the oceanic serpentinization reaction from aluminum-zoning in mesh textures (2017)
  • Author(s): 大柳良介, 岡本敦, 土屋範芳
  • Organizer: 日本地球惑星科学連合2017年大会
• [Presentation] 交換モンテカルロ法によるかんらん石の熱水変質速度の最適化 (2017)
  • Author(s): 大柳良介, 岡本敦, 土屋範芳
  • Organizer: 日本鉱物科学会 2017年会
• [Presentation] 実験前後での微細組織の直接的な比較観察 ～ブルース石+アンチゴライト→かんらん石の脱水分解反応～ (2017)
  • Author(s): 永冶 方敬, 岡本 敦, 木戸 正紀, 武藤 潤, ウォリス サイモン, 宇野 正起, 大柳 良介
  • Organizer: 日本地質学会第 124 年学術大会
• [Presentation] Mass Transfer during Formation of Secondary Olivine within Subduction Zone: Example from the Khantaishir Ophiolite, Western Mongolia (2017)
  • Author(s): Otgonbayar Dandar, Atsushi Okamoto, Masaoki Uno, Takayoshi Nagaya, Noriyoshi Tsuchiya
  • Organizer: 日本地質学会第 124 年学術大会
• [Presentation] Optimization of non-ideal parameters of amphibole solid solution using exchange Monte Carlo Method (2017)
  • Author(s): Atsushi Okamoto, Tatsu Kuwatani, Kenta Ueki, Toshiaki Omori, Koji Hukushima
  • Organizer: 日本地球惑星科学連合2017年大会
• [Presentation] Release and transport of supercritical fluids from intrusive body: an example of granitic pegmatite dike in Kinkasan Island, NE Japan (2017)
  • Author(s): Astin Nurdiana, Atsushi Okamoto, Masaoki Uno and Noriyoshi Tsuchiya
  • Organizer: 日本地熱学会
• [Presentation] 浅部ウェッジマントルにおけるアンチゴライト CPO 形成メカニズム～四国中央部三波川変成帯 別子・白髪山地域の例～ (2017)
  • Author(s): 永冶 方敬, ウォリス サイモン, 岡本 敦, 上原 誠一郎, 道林 克禎, 西井 彩
  • Organizer: 日本地質学会第 124 年学術大会
• [Presentation] 沈み込み帯プレート境界におけるSi流体交代作用によるTalc CPOの形成 (2017)
  • Author(s): 永冶 方敬, 岡本 敦, ウォリス サイモン, 大柳 良介, 武藤 潤, 宇野 正起
  • Organizer: 日本鉱物科学会 2017年年会
• [Presentation] Metamorphic Olivine Formed after Orthopyroxene in Mantle Wedge during Serpentinization from the Khantaishir Ophiolite, West Mongolia (2017)
  • Author(s): Otgonbayar Dandar, Atsushi Okamoto, Masaoki Uno, Noriyoshi Tsuchiya
  • Organizer: Japan Geoscience Union (JpGU) and American Geophysical Union (AGU) joint meeting 2017
  • Int'l Joint Research
• [Presentation] Multiply hydration events of pyroxenite and amphibolite in the middle crustal conditions, Sor Rondane Mountains, East Antarctica (2017)
  • Author(s): Diana Mindaleva, Masaoki Uno, Atsushi Okamoto, Noriyoshi Tsuchiya
  • Organizer: 日本地球惑星科学連合2017年大会
• [Presentation] 岩石ー水反応に伴う反応誘起応力・歪の支配要因とそのモデル化: CaSO4-H2O系における実験的研究 (2017)
  • Author(s): 宇野正起，岡本敦，土屋範芳
  • Organizer: 日本地球惑星科学連合2017年大会
• [Presentation] Investigation of Mass Transport and Reactive Mechanism by Cl Bearing Fluid Infiltration during Multiple Hydration Events, Sor Rondane Mountains, East Antarctica. (2017)
  • Author(s): Diana Mindaleva, Masaoki Uno, Atsushi Okamoto, Takayoshi Nagaya, Noriyoshi Tsuchiya
  • Organizer: 第8回極域科学シンポジウム
• [Presentation] 延性地殻における透水性と超臨界地熱資源の形成可能性 (2017)
  • Author(s): 渡邉 則昭，沼倉 達矢，坂口 清敏，最首 花恵，岡本 敦，Steven E. Ingebritsen，土屋 範芳
  • Organizer: JpGU-AGU Joint Meeting 2017
• [Presentation] 高温き裂性花崗岩の弾性および塑性条件下における水－岩石反応にともなう透水性変化 (2017)
  • Author(s): 斎藤 耕平，渡邉 則昭，岡本 敦
  • Organizer: JpGU-AGU Joint Meeting 2017
• [Presentation] Pressure solution and permeability evolution in fractured granite at elastic and plastic deformation regimes (2017)
  • Author(s): ohei Saito, Noriaki Watanabe, Atsushi Okamoto, Noriyoshi Tsuchiya, Takuya Ishibashi, Hanae Saishu
  • Organizer: Geothermal Resources Council 2017 Annual Meeting
  • Int'l Joint Research
• [Remarks] https://geo.kankyo.tohoku.ac.jp/gmel2/
• [Remarks]
  • URL: http://geo.kankyo.tohoku.ac.jp/gmel/index.php/achievement/
• [Remarks] Tscuhiya Lab. - Geomaterial and Energy Science
  • URL: http://geo.kankyo.tohoku.ac.jp/gmel/