2023

Metamorphic rocks with different pressure–temperature–time paths bounded by a ductile shear zone at Oyayubi ridge, Brattnipene, Sør Rondane Mountains, East Antarctica. Adachi, T., Kawakami, T., Higashino, F., Uno, N., 2023. Journal of Mineralogical and Petrological Sciences, 230220.

Continuous thermal structures of the present-day and contact-metamorphic geothermal systems revealed by drill cuttings in the Kakkonda geothermal field, Japan. Uno, M.*, Okamoto, A., Akatsuka, T., Tsuchiya, N., 2023. Geothermics, 115, 102806.

Upward earthquake swarm migration in the northeastern Noto peninsula, Japan, initiated from a deep ring‐shaped cluster: Possibility of fluid leakage from a hidden magma system. Yoshida, K., Uno, M., Matsuzawa, T., Yukutake, Y., Mukuhira, Y., Sato, H., Yoshida, T., 2023. Journal of Geophysical Research: Solid Earth, 128, e2022JB026047.

Progressive carbonation and Ca-metasomatism of serpentinized ultramafic rocks: insights from natural occurrences and hydrothermal experiments. Amarbayar, N., Dandar, O., Wang, J., Okamoto, A., Uno, M., Batsaikhan, U., Takayanagi, H., Iryu, Y., Tsuchiya, N.*, 2023. Contributions to Mineralogy and Petrology, 178:38

Mantle hydration initiated by Ca metasomatism in a subduction zone: An example from the Chandman meta-peridotite, western Mongolia. Dandar, O., Okamoto, A.*, Uno, M., Tsuchiya, N. Lithos, 452-453, 107212.
Partial melting under shallow-crustal conditions: A study of the Pleistocene caldera eruption of Mendeleev volcano, southern Kuril island arc. Kotov, A.*, Smirnov, S., Nizametdinov, I., Uno, M., Tsuchiya, N., Maksimovich, I., 2023. Journal of Petrology, 64, 1-22.

Multiple post-peak metamorphic fluid infiltrations in southern Perlebandet, Sør Rondane Mountains, East Antarctica. Higashino, F.*, Kawakami, T., Adachi, T., Uno, N., 2023. Journal of Mineralogical and Petrological Sciences, 118:S004.
Metasomatism at a metapelite–ultramafic rock contact at the subduction interface: Insights into mass transfer and fluid flow at the mantle wedge corner. Oyanagi, R., Uno, M., Okamoto, A., 2023. Contributions to Mineralogy and Petrology, 178:23.

Kazuki Yoshida*, Ryosuke Oyanagi, Masao Kimura, Oliver Plümper, Mayuko Fukuyama, Atsushi Okamoto*

“Geological recordsof transient fluid drainage into the shallow mantlewedge”, Science Advances, 9, 14, (2023).
https://www.science.org/doi/10.1126/sciadv.ade6674

石橋琢也*，冨樫聡，宇野正起
「日本の浅部から深部における地殻浸透率」日本地熱学会誌 45, 1, 27–44 (2023)
Ishibashi, M., Tomigashi, A., Uno, M., ” Crustal permeability in Japan: From shallow to deep”, Journal of the Geothermal Research Society of Japan, 45, 1, 27–44.

Mindaleva, D.*, Uno, M.*, and Tsuchiya, N.*
“Short‐lived and voluminous fluid‐flow in a single fracture related to seismic events in the middle crust” Geophysical Research Letters (2023) in press.
https://doi.org/10.1029/2022GL099892

Kikuchi, S., Wang, J.*, Dandar, O., Uno, M., Watanabe, N., Hirano, N., and Tsuchiya, N.
“NaHCO3 as a carrier of CO2 and its enhancement effect on mineralization during hydrothermal alteration of basalt” Frontiers in Environmental Science, 11, 1–11 (2023)
https://doi.org/10.3389/fenvs.2023.1138007

Tosiaki Omori, Shoi Suzuki, Katsuyoshi Michibayashi, Atsushi Okamoto, Super‑resolution of X‑ray CT images of rock samples by sparse representation: applications to the complex texture of serpentinite, 2023, Scientific Reports 13, 6648.

Nomuulin Amarbayar, Otgonbayar Dandar, Jiajie Wang, Atsushi Okamoto, Masaoki Uno, Undarmaa Batsaikhan, Hideko Takayanagi, Yasufumi Iryu, Noriyoshi Tsuchiya, Progressive carbonation and Ca‑metasomatism of serpentinized ultramafic rocks: insights from natural occurrences and hydrothermal experiments, 2023, Contributions to Mineralogy and Petrology 178, 38. https://doi.org/10.1007/s00410-023-02013-z

Rysosuke Oyanagi, Masaoki Uno, Atsushi Okamoto, Metasomatism at a metapelite–ultramafic rock contact at the subduction interface: Insights into mass transfer and fluid flow at the mantle wedge corner, 2023, Contributions to Mineralogy and Petrology 178, 27. https://doi.org/10.1007/s00410-023-02011-1

Atsushi Okamoto, Ryosuke Oyanagi, Si‑ versus Mg‑metasomatism at the crust– mantle interface: insights from experiments, natural observations and geochemical modeling, 2023, Progress in Earth and Planetary Science 10, 39. https://doi.org/10.1186/s40645-023-00568-w

Kenta Yoshida , Akira Miyake, Shota H. Okumura, Hidemi Ishibashi, Satoshi Okumura , Atsushi Okamoto, Yasuhiro Niwa, Masao Kimura, Tomoki Sato, Yoshihiko Tamura & Shigeaki Ono , Oxidation‑induced nanolite crystallization triggered the 2021 eruption of Fukutoku‑Oka‑no‑Ba, Japan, 2023, Scientific Reports 13, 7117. https://doi.org/10.1038/s41598-023-34301-w

Ikuo Katayama, Keishi Okazaki, Atsushi Okamoto, Role of mantle carbonation in trench outer-rise region in the global carbon cycle, 2023, Island Arc 32, e12499. https://doi.org/10.1111/iar.12499

2022

Mukuhira, Y.*, Uno, M., Yoshida, K.
“Slab-derived fluid storage in the crust elucidated by earthquake swarm” Communications Earth & Environment, 3, 286 (2022)
https://doi.org/10.1038/s43247-022-00610-7

Amanda, F.F., Tsuchiya, N.*, Alviani, V.N., Uno, M., Yamada, R., Shimizu, S., Oyanagi, R.
“High-temperature silicified zones as potential caprocks of supercritical geothermal reservoirs” Geothermics, 105, 102475 (2022)
https://doi.org/10.1016/j.geothermics.2022.102475

Bayarbold, M., Okamoto, A., Dandar, O., Uno, M., Tsuchiya, N.*
“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” Journal of Asian Earth Sciences, 229, 105150 (2022) https://doi.org/10.1016/j.jseaes.2022.105150

Astin Nurdiana*, Atsushi Okamoto, Masaoki Uno, Noriyoshi Tsuchiya
“Development of Open Transport of Aqueous Fluid from Pegmatite Revealed by Trace Elements in Garnet” Geofluids (2022)
https://doi.org/10.1155/2022/8786250

Satoshi Matsuno, Masaoki Uno*, Atsushi Okamoto, Noriyoshi Tsuchiya
“Machine-learning techniques for quantifying the protolith composition and mass transfer history of metabasalt”. Scientific Reports 12, 1385 (2022). https://doi.org/10.1038/s41598-022-05109-x

Masaoki Uno*, Kodai Koyanagawa, Hisamu Kasahara, Atsushi Okamoto, Noriyoshi Tsuchiya
“Volatile-consuming reactions fracture rocks and self-accelerate fluid flow in the lithosphere”, Proceedings of the National Academy of Science, January 18, 2022 119 (3), DOI: https://doi.org/10.1073/pnas.2110776118

2021

Amarbayar Nomuulin, Noriyoshi Tsuchiya, Dandar Otgonbayar, Atsushi Okamoto, Masaoki Uno, Batsaikhan Undarmaa, Jiajie Wang, “Multi-stage serpentinization of ultramafic rocks in the Manlay Ophiolite,  southern Mongolia”, Mongolian Geoscientist, 26 (53) 1-17, 2021, DOI: https://doi.org/10.5564/mgs.v26i53.1787

Kameda, J.＊, Okamoto, A., 2021. Generation of oxidizing fluids by comminution of fault rocks. Geochemical Perspective Letters, 29 Oct. DOI: 10.7185/geochemlet.2131

Hirauchi, K., Nagata, Y., Kataoka, K., Oyanagi, R., Okamoto, A., Michibayashi, K., 2021. Cataclastic and crystal-plastic deformation in shallow mantle-wedge serpentinite controlled by cyclic changes in pore fluid pressures. Earth and Planetary Science Letters, DOI: 10.1016/j.epsl.2021.117232.

Benjamin Busch, Atsushi Okamoto, Krassmir Garbev, Christoph Hilgers
“Experimental fracture sealing in reservoir sandstones and its relation to rock texture  ”, Journal of Structural Geology, 2021. DOI:10.1016/j.jsg.2021.104447

Atsushi Okamoto, Ryosuke Oyanagi, Kazuki Yoshida, Masaoki Uno, Hiroyuki Shimizu, Madhusoodhan Satish-Kumar (2021). Rupture of wet mantle wedge by self-promoting carbonation, Communications Earth & Environment, DOI:10.1038/s43247-021-00224-5.

森下知晃, 藤江 剛, 平内健一, 片山郁夫, 纐纈佑衣, 黒田潤一郎, 岡本 敦, 小野重明, 道林 克禎, 諸野祐樹, 山本伸次 (2021) マントル掘削でのみ解明される地球科学問題：生命惑星海洋プレートの今を理解する, 地学雑誌, 2021/5/21. accepted.

Kameda, J.*, Okamoto, A., 2021. 1-D inversion analysis of a shallow landslide triggered by the 2018 Eastern Iburi earthquake in Hokkaido, Japan．Earth Planets and Space, DOI:10.1186/s40623-021-01443-y

OTGONBAYAR DANDAR; Atsushi Okamoto; Masaoki Uno; Noriyoshi Tsuchiya., Redistribution of Magnetite during Multi-stage Serpentinization: Evidence from the Taishir Massif, the Khantaishir Ophiolite, Western Mongolia. Journal of Mineralogical and Petrological Sciences, 2021. DOI:10.2465/jmps.201130a

Alviani, V.N., Hirano, N., Watanabe, N., Oba, M., Uno, M., Tsuchiya, N., Local initiative hydrogen production by utilization of aluminum waste materials and natural acidic hot-spring water. Applied Energy, 116909. DOI:10.1016/j.apenergy.2021.116909

Atsushi Okamoto, Hajime Ishii, Ryosuke Oyanagi, Noriyoshi Tsuchiya., 2021. Albite–K-feldspar–quartz equilibria in hydrothermal fluids at 400, 420˚C and 20–35MPa: experimental measurements and thermodynamic calculations. Geothermics. DOI:10.1016/j.geothermics.2021.102109

Watababe, N., Abe, H., Okamoto, A., Nakamura, K., Komai, T., 2021. Formation of amorphous silica nanoparticles and its impact on permeability of fractured granite in superhot geothermal environments. Scientific Reports, 11, 5340. DOI:10.1038/s41598-021-84744-2

Nurdiana, A., Okamoto, A., Yoshida, K., Uno, M., Nagaya, T., Tsuchiya, N., 2021. Multi-stage infiltration of Na- and K-rich fluids from pegmatites at mid-crustal depths as revealed by feldspar replacement textures. Lithos, DOI:10.1016/j.lithos.2021.106096

2020

Agroli, G., Okamoto, A., Uno, M., Tsuchiya, N., 2020. Transport and evolution of supercritical fluids during the formation of the Erdenet Cu-Mo deposit, Mongolia. Geosciences, 10, 201. DOI:10.3390/geosciences10050201

Suzuki, A., Miyazawa, M., Okamoto, A., Shimizu, H., Obayashi, I., Hiraoka, Y., Tsuji, T., Kang, P.K., Ito, T., 2020. Inferring fracture forming processes by characterizing fracture network patterns with persistent homology. Computers and Geosciences, DOI:10.106/j.cageo.2020.104550.

河上哲生, 足立達郎, 宇野正起, 東野文子, 赤田幸久, 2020. 東ドロンイングモードランド，セール・ロンダーネ山地 地学調査隊報告 2019–2020 (JARE-61), 南極資料, 64, 351-398, DOI:doi/10.15094/00016230.

Yoshida, K., Okamoto, A., Shimizu, H., Oyanagi, R., Tsuchiya, N., Oman Drilling Project Phase 2 Science Party., 2020. Fluid Infiltration Through Oceanic Lower Crust in Response to Reaction‐Induced Fracturing: Insights From Serpentinized Troctolite and Numerical Models. Journal of Geophysical Research: Solid Earth, 125, 11. DOI:10.1029/2020JB020268

Mindaleva, D., Uno, M.*, Higashino, F., Nagaya, T., Okamoto, A., and Tsuchiya, N., 2020, Rapid fluid infiltration and permeability enhancement during middle–lower crustal fracturing: Evidence from amphibolite–granulite-facies fluid–rock reaction zones, Sør Rondane Mountains, East Antarctica. Lithos, 372–373, 105521. DOI:10.1016/j.lithos.2020.105521

Okamoto, A., Fuse, K., Shimizu, H., Ito, T., 2020, Impact of fluid pressure on failure mode in shear zones: Numerical simulation of en-echelon tensile fracturing and transition to shear. Tectonophysics. DOI:10.1016/j.tecto.2019.228277

Oyanagi, R.*, Okamoto, A., Tsuchiya, N., 2020. Silica controls on hydration kinetics during serpentinization of olivine: Insights from hydrothermal experiments and a reactive transport model. Geochimica et Cosmochimica Acta, 270, 21-42. DOI:10.1016/j.gca.2019.11.017

Watanabe, N.*, Saito, K., Okamoto, A., Nakamura, K., Ishibashi, T., Saishu, H., Komai, T., Tuschiya, N., 2020. Stabilizing and enhancing permeability for sustainable and profitable energy extraction from superhot geothermal environments, Applied Energy, 260, 114306. DOI:10.1016/j.apenergy.2019.114306

Nagaya, T.*, Okamoto, A., Oyanagi, R., Seto, Y., Miyake, A., Uno, M., Muto, J., Wallis., S., accepted. 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. American Mineralogist. DOI:10.2138/am-2020-7006

Ueki, K.*, Kuwatani, T., Okamoto, A., Akaho, S., Iwamori, H. 2020. Thermodynamic modeling of hydrous-melt–olivine equilibrium using exhaustive variable selection. Physics of the Earth and Planetary Interiors, DOI:10.1016/j.pepi.2020.106430

Wang J. *, Watanabe N., Okamoto, A., Nakamura, K., Komai, T., 2020. Characteristics of hydrogen production with carbon storage by CO₂-rich hydrothermal alteration of olivine in the presence of Mg–Al spinel. International Journal of Hydrogen Energy, DOI:10.1016/j.ijhydene.2020.03.032

Kuwatani, T.*, Yoshida, K., Ueki, K., Oyanagi, R., Uno, M., and Akaho, S., 2020. Sparse isocon analysis: A data-driven approach for material transfer estimation. Chemical Geology, v. 532, p. 119345, DOI:10.1016/j.chemgeo.2019.119345

2019

Amagai, T, Okamoto, A, Niibe, T, Hirano, N, Motomiya, K, Tsuchiya, N, Silica nanoparticles produced by explosive flash vaporization during earthquakes, Scientific Reports (2019), DOI:10.1038/s41598-019-46320-7

Masaoki Uno, Stephen Kirby, Evidence for multiple stages of serpentinization from the mantle through the crust in the Redwood City Serpentinite mélange along the San Andreas Fault in California, Lithos (2019), DOI:10.1016/j.lithos.2019.02.005

Otgonbayar Dandar, Atsushi Okamoto, Masaoki Uno, Ryosuke Oyanagi, Takayoshi Nagaya, Ulziiburen Burenjargal, Tsuyoshi Miyamoto, Noriyoshi Tsuchiya, Formation of secondary olivine after orthopyroxene during hydration of mantle wedge: evidence from the Khantaishir Ophiolite, western Mongolia, Contributions to Mineralogy and Petrology (2019), DOI:10.1007/s00410-019-1623-1

Kameda, J.*, Uno, M., Conin, M., Ujiie, K., Hamada, Y., and Kimura, G., 2019. Fault weakening caused by smectite swelling, Earth, Planets and Space, v. 71, no. 1, p. 131, DOI:10.1186/s40623-019-1108-5.

Nohara, T.*, Uno, M., and Tsuchiya, N., 2019. Enhancement of Permeability Activated by Supercritical Fluid Flow through Granite, Geofluids, v. 2019, p. 6053815, DOI:10.1155/2019/6053815

2018

Otgonbayar Dandar, Atsushi Okamoto, Masaoki Uno, Undarmaa Batsaikhan, Burenjargal Ulziiburen, Noriyoshi Tsuchiya, Drone brings new advance of geological mapping in Mongolia: Opportunities and challenges, Mongolian Geoscientist (2018), DOI:10.5564/mgs.v0i47.1063