Researcher Information
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Research activity information
Papers
- Keishiro Azami; Kanta Koyama; Takuya Saito; Takazo Shibuya; Syogo Kinoshita; Shiki Machida; Yasuhiro Kato; Etsuo Uchida
Petit-spot hydrothermal systems simulated: Fluid evolution, chemical fluxes, and chemoautotrophic habitability
Geochimica et Cosmochimica Acta, Nov. 2025 - Masafumi Saitoh; Takazo Shibuya; Takuya Saito; Junji Torimoto; Hisahiro Ueda; Tomoki Sato; Katsuhiko Suzuki
Experimental Hydrothermal Alteration of Rhyolite and Andesite at 325 °C and 300 Bar: Implications for a Potential Role of Volcanic Glass in the Fluid Composition in the Okinawa Trough
Minerals, 29 Feb. 2024
14, 3, 259, 259 - Frank Postberg; Yasuhito Sekine; Fabian Klenner; Christopher R. Glein; Zenghui Zou; Bernd Abel; Kento Furuya; Jon K. Hillier; Nozair Khawaja; Sascha Kempf; Lenz Noelle; Takuya Saito; Juergen Schmidt; Takazo Shibuya; Ralf Srama; Shuya Tan
Detection of phosphates originating from Enceladus’s ocean
Nature, 15 Jun. 2023 - Konomi Suda; Takahiro Aze; Yosuke Miyairi; Yusuke Yokoyama; Yohei Matsui; Hisahiro Ueda; Takuya Saito; Tomohiko Sato; Yusuke Sawaki; Ryosuke Nakai; Hideyuki Tamaki; Hiroshi A. Takahashi; Noritoshi Morikawa; Shuhei Ono
The origin of methane in serpentinite-hosted hyperalkaline hot spring at Hakuba Happo, Japan: Radiocarbon, methane isotopologue and noble gas isotope approaches
Earth and Planetary Science Letters, May 2022 - L. Ardoin; M.W. Broadley; M. Almayrac; G. Avice; D.J. Byrne; A. Tarantola; A. Lepland; T. Saito; T. Komiya; T. Shibuya; B. Marty
The end of the isotopic evolution of atmospheric xenon
Geochemical Perspectives Letters, Mar. 2022 - Manabu Nishizawa; Takuya Saito; Akiko Makabe; Hisahiro Ueda; Masafumi Saitoh; Takazo Shibuya; Ken Takai
Stable Abiotic Production of Ammonia from Nitrate in Komatiite-Hosted Hydrothermal Systems in the Hadean and Archean Oceans
Minerals, 19 Mar. 2021 - Manabu Nishizawa; Yohei Matsui; Konomi Suda; Takuya Saito; Takazo Shibuya; Ken Takai; Sunao Hasegawa; Hajime Yano
Experimental Simulations of Hypervelocity Impact Penetration of Asteroids Into the Terrestrial Ocean and Benthic Cratering
Journal of Geophysical Research: Planets, Dec. 2020 - Takuya Saito; Hua-Ning Qiu; Takazo Shibuya; Yi-Bing Li; Kouki Kitajima; Shinji Yamamoto; Hisahiro Ueda; Tsuyoshi Komiya; Shigenori Maruyama
Ar–Ar dating for hydrothermal quartz from the 2.4 Ga Ongeluk Formation, South Africa: implications for seafloor hydrothermal circulation
Royal Society Open Science, Sep. 2018
5, 9, 180260, 180260 - Sawaki, Y.; Suzuki, K.; Asanuma, H.; Okabayashi, S.; Hattori, K.; Saito, T.; Hirata, T.
Geochemical characteristics of zircons in the Ashizuri A-type granitoids: An additional granite topology tool for detrital zircon studies
Island Arc, 2017
26, 6 - Saito, T.; Shibuya, T.; Komiya, T.; Kitajima, K.; Yamamoto, S.; Nishizawa, M.; Ueno, Y.; Kurosawa, M.; Maruyama, S.
PIXE and microthermometric analyses of fluid inclusions in hydrothermal quartz from the 2.2 Ga Ongeluk Formation, South Africa: Implications for ancient seawater salinity
Precambrian Research, Nov. 2016
286, 337, 351 - Saito, T.; Uno, M.; Sato, T.; Fujisaki, W.; Haraguchi, S.; Li, Y.-B.; Sawaki, Y.; Yamamoto, S.; Maruyama, S.
Geochemistry of accreted metavolcanic rocks from the Neoproterozoic Gwna Group of Anglesey-Lleyn, NW Wales, U.K.: MORB and OIB in the Iapetus Ocean
Tectonophysics, 2014
662 - Saito, T.; Okada, Y.; Fujisaki, W.; Sawaki, Y.; Sakata, S.; Dohm, J.; Maruyama, S.; Hirata, T.
Accreted Kula plate fragment at 94Ma in the Yokonami-melange, Shimanto-belt, Shikoku, Japan
Tectonophysics, 2014
623
Misc.
- Suda Konomi; Aze Takahiro; Miyairi Yosuke; Yokoyama Yusuke; Matsui Yohei; Ueda Hisahiro; Saito Takuya; Sato Tomohiko; Sawaki Yusuke; Nakai Ryosuke; Tamaki Hideyuki; A. Takahashi Hiroshi; Morikawa Noritoshi; Ono Shuhei
Deep origin of methane from serpentinite-hosted Hakuba Happo hot spring, Japan
Abstracts of Annual Meeting of the Geochemical Society of Japan, 2021
68, 48 - Numaho Sota; Shibuya Takazo; Ueda Hisahiro; Saito Takuya; Kikuchi Sakiko; Makabe Akiko; Nishizawa Manabu; Torimoto Junji; Tomita Masaru
Hydrogen generation by water rock interactions at hydrothermal field within Saturn's icy moon Enceladus.
Abstracts of Annual Meeting of the Geochemical Society of Japan, 2019
66, 0, 228, 228 - Saito Takuya; Shibuya Takazo; Sawaki Yusuke; Komiya Tsuyoshi; Maruyama Shigenori
Secular change of seawater salinity through Earth history
Annual Meeting of the Geological Society of Japan, 2015
2015, 79, 79 - Okada Yoshihiro; Yamamoto Shinji; Windley Brian F.; Fujisaki Wataru; Saito Takuya; Aoki Kazumasa; Hirata Takafumi; Maruyama Shigenori
Ediacaran-Cambrian accretion tectonics of Anglesey and Lleyn Peninsula, Wales, U.K.: Reconstruction of ocean-plate stratigraphy (OPS) and detrital zircon chronology
Annual Meeting of the Geological Society of Japan, 2012
2012, 137, 137 - Okada Yoshihiro; Yamamoto Shinji; Windley Brian F.; Shimojo Masanori; Saito Takuya; Fujisaki Wataru; Maki Kenshi; Hirata Takafumi; Maruyama Shigenori
Deep sea sediments of Mainoan Snowball Earth in Lleyn, Wales, U.K.
Annual Meeting of the Geological Society of Japan, 2012
2012, 373, 373 - Saitou Takuya; Shibuya Takazou; Nishizawa Manabu; Kitajima Kouki; Kon Yoshiaki; Sawaki Yusuke; Komiya Tsuyoshi; HIRATA TAKAFUMI; Maruyama Shigenori
Geochemistry of fluid inclusions in hydrothermal quartz: Implications for composition of paleoseawater
Abstracts of Annual Meeting of the Geochemical Society of Japan, 2008
55, 256, 256 - Saitou Takuya; Shibuya Takazo; Nishizawa Manabu; Kitajima Kouki; Kon Yoshiaki; Sawaki Yusuke; Komiya Tsuyoshi; Maruyama Shigenori; Hirata Takahumi
Geochemistry of flui inclusions in hydrothermal quartz: Implications for composition of paleoseawater
Annual Meeting of the Geological Society of Japan, 2008
2008, 347, 347
Presentations
- Tan, S.; Shibuya, T.; Saito, T.; Kashiwabara, T.
Laboratory experiments using sulfate solutions and basaltic rocks:Implications for hydrothermal reactions in Europa
日本地球惑星科学連合 2025年大会, 30 May 2025 - 浅見 慶志朗; 小山 幹太; 齋藤 拓也; 渋谷 岳造; 町田 嗣樹; 加藤 泰浩; 内田 悦生
Hydrothermal experiment simulating petit-spot hydrothermal systems
日本地球惑星科学連合 2025年大会, 25 May 2025 - 丹秀也; 渋谷岳造; 齋藤拓也; 柏原輝彦
氷衛星の海洋は生命に対して金属が不足している可能性
第49回 生命の起原および進化学会 学術講演会, 28 Mar. 2025 - 丹秀也; 渋谷岳造; 関根康人; 齋藤拓也
氷衛星海底での化学反応の実験室再現：生命必須微量金属を含む海洋組成への示唆
第26回惑星圏シンポジウム, 03 Mar. 2025 - 丹 秀也; 渋谷 岳造; 齋藤 拓也
Investigations for metals in basalt-hosted hydrothermal environments: Implications for habitability of Europa
日本地球惑星科学連合2024年大会, 26 May 2024 - Yusuke Mizukami, Shuya Tan, Yasuhito Sekine, Takazo Shibuya, Takuya Saito, Yoshio Takahashi
Diversity of hydrothermal systems in various dissolved carbonate and sulfate in seawater: Implications for Earth’s evolution
Water-Rock Interaction WRI-17/ Applied Isotope Geochemistry AIG-14, 19 Aug. 2023 - 関根 康人; Postberg Frank; 丹 秀也; 渋谷 岳造; 齋藤 拓也
エンセラダスの海から地球生命を考える
日本地球惑星科学連合2023年大会, 26 May 2023 - 丹 秀也; 関根 康人; 渋谷 岳造; 齋藤 拓也
Investigations of phosphate behavior within subsurface ocean of Enceladus through hydrothermal experiments and geochemical modeling
日本地球惑星科学連合2023年大会, 26 May 2023 - 水上 勇佑; 丹 秀也; 関根 康人; 渋谷 岳造; 齋藤 拓也; 高橋 嘉夫
Long-term evolution of hydrothermal fluid chemistry on Earth
日本地球惑星科学連合2023年大会, 25 May 2023 - 西澤 学; 齋藤 拓也; 眞壁 明子
地球初期海底熱水系におけるアンモニア生成の化学と同位体効果の実験的研究
JpGU2023, 25 May 2023 - Frank Postberg, Yasuhito Sekine, Fabian Klenner, Christopher R. Glein, Zenghui Zou, Bernd Abel, Kento Furuya, Jonathan K. Hillier, Nozair Khawaja, Sascha Kempf, Lenz Noelle, Takuya Saito, Jürgen Schmidt, Takazo Shibuya, Ralf Srama, and Shuya Tan
Detection of phosphate in Enceladus' ocean with implications for geochemistry and habitability in the outer solar system
EGU General Assembly 2023, 27 Apr. 2023 - Yasuhito Sekine, Frank Postberg, Fabian Klenner, Christopher R Glein, Zenghui Zou, Bernd Abel, Jon Hillier, Nozair Khawaja, Sascha Kempf, Lenz Nölle, Takuya Saito, Juergen Schmidt, Takazo Shibuya, Ralf Srama and Shuya Tan
Detection of Phosphate in Enceladus' Ocean: Its Implications for Geochemistry and Habitability
AGU Fall Meeting 2022, 15 Dec. 2022 - 関根 康人; フランク ポストバーグ; 丹 秀也; 渋谷 岳造; 齋藤 拓也
エンセラダス地下海のリン濃集と太陽系での前生命化学進化の多様性
日本惑星科学会2022年秋季講演会, 20 Sep. 2022 - 工藤 久志; 上田 修裕; 齋藤 拓也; 渋谷 岳造
エンケラドスの天体形成時の条件を模擬したメタン生成実験
日本地球化学会 第68回年会, 01 Sep. 2021 - Suda Konomi; Aze Takahiro; Miyairi Yosuke; Yokoyama Yusuke; Matsui Yohei; Ueda Hisahiro; Saito Takuya; Sato Tomohiko; Sawaki Yusuke; Nakai Ryosuke; Tamaki Hideyuki; A. Takahashi Hiroshi; Morikawa Noritoshi; Ono Shuhei
Deep origin of methane from serpentinite-hosted Hakuba Happo hot spring, Japan
Abstracts of Annual Meeting of the Geochemical Society of Japan, 2021 - Manabu Nishizawa, Takuya Saito, Akiko Makabe, Takazo Shibuya, Ken Takai
Abiotic nitrate reduction in hydrothermal environments and nitrogen cycle in early earth
JpGU - AGU Joint Meeting 2020: Virtual, 24 May 2020 - Takazo Shibuya, Sota Numaho, Hisahiro Ueda, Sakiko Kikuchi, Yutaro Takaya, Takuya Saito, Mariko Abe, Masaru Tomita, Ken Takai
H2-rich hydrothermal environment in the Enceladus’ subsurface ocean
JpGU - AGU Joint Meeting 2020: Virtual, 24 May 2020 - Takazo Shibuya, Sota Numaho, Hisahiro Ueda, Sakiko Kikuchi, Yutaro Takaya, Takuya Saito, Mariko Abe, Masaru Tomita and Ken Takai
Serpentinization and bioavailable free energies in the hydrothermal systems within Enceladus
JpGU - AGU Joint Meeting 2020: Virtual, 24 May 2020 - Suda Konomi; Aze Takahiro; Miyairi Yosuke; Yokoyama Yusuke; Matsui Yohei; Ueda Hisahiro; Saito Takuya; Sato Tomohiko; Sawaki Yusuke; Nakai Ryosuke; Tamaki Hideyuki; A. Takahashi Hiroshi; Morikawa Noritoshi
Radiocarbon and noble gas constraints on origin of methane in serpentinite-hosted Hakuba Happo hot spring, Japan
Abstracts of Annual Meeting of the Geochemical Society of Japan, 2020 - Saito T, Qiu H-N, Shibuya T, Komiya T & Maruyama S
Constrains on the origin of fluid trapped in hydrothermal quartz from 2.4 Ga Ongeluk Fm., South Africa
Goldschmidt2019, 20 Aug. 2019 - M. Nishizawa, Y. Matsui, K. Suda, T. Saito, T. Shibuya, H. Yano and K. Takai
HYPERVELOCITY IMPACT EXPERIMENTS TO STUDY METEORITE FRAGMENTATION IN THE OCEAN AND IMPACT-DERIVED PRODUCTS
50th Lunar and Planetary Science Conference, 21 Mar. 2019 - Numaho Sota; Shibuya Takazo; Ueda Hisahiro; Saito Takuya; Kikuchi Sakiko; Makabe Akiko; Nishizawa Manabu; Torimoto Junji; Tomita Masaru
Hydrogen generation by water rock interactions at hydrothermal field within Saturn's icy moon Enceladus.
Abstracts of Annual Meeting of the Geochemical Society of Japan, 2019 - 西澤 学, 斎藤 拓也, 眞壁 明子, 渋谷 岳造, 高井 研
初期地球海底熱水環境における非生物学的硝酸還元
日本地球化学会第65回年会, 11 Sep. 2018 - 西澤 学; 松井 洋平; 渋谷 岳造; 須田 好; 齋藤 拓也; 高井 研; 矢野 創
Hypervelocity impact experiments to simulate chondrite fragmentation on the early ocean and implication for the fate of meteoritic organics
日本地球惑星科学連合2018年大会, 22 May 2018 - Saito, T.; Shibuya, T.; Komiya, T.; Nishizawa, M.; Maruyama, S.; Kurosawa, M.
Ancient seawater salinity retained as fluid inclusions in hydrothermal quartz from the 2.2 Ga Ongeluk Formation, South Africa
26th Annual VM Goldschmidt Conference2016, Jun. 2016 - Shibuya, T.; Ueno, Y.; Komiya, T.; Nishizawa, M.; Kitajima, K.; Yamamoto, S.; Saito, T.; Matsui, Y.; Kawagucci, S.; Takai, K.; Yoshida, N.; Maruyama, S.; Russell, M.
Atmospheric CO2 levels during the Paleoproterozoic Makganyene glaciation
26th Annual VM Goldschmidt Conference2016, Jun. 2016 - 齋藤 拓也; 渋谷 岳造; 小宮 剛; 丸山 茂徳; 黒澤 正紀
22億年前南アフリカーオンゲルック累層に産する熱水性石英中流体包有物を用いた、PIXE分析並びに氷点測定から読み解く過去の海水塩濃度
日本地球惑星科学連合2016年大会, 25 May 2016 - 齋藤拓也; 渋谷岳造; 小宮剛; 丸山茂徳; 黒澤正紀
22 億年前南アフリカーオンゲルック累層 に産する熱水性石英中流体包有物を用いた、PIXE 分析並びに氷点測定から読み解く当時の海水塩濃度
地球惑星科学連合 2016 年大会, May 2016 - 齋藤拓也; 渋谷岳造; 澤木佑介; 小宮剛; 丸山茂徳
22 億年前 Ongeluk 累層中に産する熱水性 石英を用いた当時の海水組成の復元
日本地球化学会第 63 回年会, Sep. 2015 - 齋藤拓也; 渋谷岳造; 澤木佑介; 小宮剛; 丸山茂徳
地球史を通した海水塩濃度の経年変化
地球惑星科学連合 2015 年大会, May 2015 - 齋藤拓也; Qiu, Hua-Ning; 渋谷岳造; 丸山茂徳
熱水性石英中の流体包有物を用いた Ar-Ar 年代測定と試料の産状の比較
地球惑星科学連合 2015 年大会, May 2015 - Saito Takuya; Shibuya Takazo; Sawaki Yusuke; Komiya Tsuyoshi; Maruyama Shigenori
Secular change of seawater salinity through Earth history
Annual Meeting of the Geological Society of Japan, 2015 - 渋谷岳造; 上野雄一郎; 小宮剛; 西澤学; 北島宏輝; 山本伸次; 齋藤拓也; 高井研; 吉田尚弘; 丸山茂徳; ラッセルマイケル
原生代前期全球凍結時の大気二酸化炭素分圧
日本地球惑星科学連合2014年大会, 02 May 2014 - 齋藤拓也; 岡田吉弘; 藤崎渉; 坂田周平; 丸山茂徳; 平田岳史
四国、四万十帯北帯、横浪メ ランジュのジルコンU-Pb年代測定による同地域の年代構造の再考
日本地質学会大120年学術大会, Sep. 2013 - Saito, T.; Maruyama, S.; Fujisaki, W.
Juxtaposed 130 Ma Kula Plate Fragment and 80 Ma Pacific Plate fragment in the Yokonami-Melange, Shimanto-Belt, Shikoku, Japan
Asia Oceania Geosciences Society 10th Annual Meeting, May 2013 - Saitou, T.; Uno, M.; Nakamura, H.; Iwamori, H.; Okada, Y.; Fujisaki, W.; Maruyama, S.; Yokoyama, T.; Yamamoto, S.; Windley, B. F.
Geochemistry of metavolcanic rocks from the Mona Complex of Anglesey and Lleyn, North Wales, U. K
The Precambrian-Palaeozoic rocks of Anglesey and the Lleyn Peninsula: Framework and Tectonic Development, Jul. 2012 - Okada Yoshihiro; Yamamoto Shinji; Windley Brian F.; Fujisaki Wataru; Saito Takuya; Aoki Kazumasa; Hirata Takafumi; Maruyama Shigenori
Ediacaran-Cambrian accretion tectonics of Anglesey and Lleyn Peninsula, Wales, U.K.: Reconstruction of ocean-plate stratigraphy (OPS) and detrital zircon chronology
Annual Meeting of the Geological Society of Japan, 2012 - Okada Yoshihiro; Yamamoto Shinji; Windley Brian F.; Shimojo Masanori; Saito Takuya; Fujisaki Wataru; Maki Kenshi; Hirata Takafumi; Maruyama Shigenori
Deep sea sediments of Mainoan Snowball Earth in Lleyn, Wales, U.K.
Annual Meeting of the Geological Society of Japan, 2012 - 齋藤拓也; 渋谷岳造; 小宮剛; 北島宏輝; 上野雄一郎; 丸山茂徳; 黒澤正紀
22 億年前の海水 塩化物イオン濃度と表層環境の進化
日本地質学会大 118 年学術大会, Sep. 2011 - 齋藤拓也; 渋谷岳造; 小宮剛; 北島宏輝; 山本伸次; 西澤学; 上野雄一郎; 丸山茂徳; 黒澤正紀
22 億年前の流体包有物による全球凍結の真核生物への影響力に対する解釈
地球惑星科学連合 2011 年大会, May 2011 - 齋藤拓也; 渋谷岳造; 小宮剛; 北島宏輝; 山本伸次; 西澤学; 上野雄一郎; 丸山茂徳; 黒澤正紀
22 億年前オンゲレック累層における熱水性石英中流体包有物分析による当時の海水組成の推定
学会 名: 日本地球惑星科学連合 2010 大会, May 2010 - Saitou, T.; Shibuya, T.; Komiya, T.; Kitajima, K.; Yamamoto, S.; Ueno, Y.; Nishizawa, M.; Maruyama, S.
Highly saline Palaeoproterozoic seawater inferred from fluid inclusions in 2.4Ga Ongeluk Formation
19th Annual VM Goldschmidt Conference 2009, Jun. 2009 - 齋藤拓也; 渋谷岳造; 小宮剛; 北島宏輝; 山本伸次; 西澤学; 上野雄一郎; 丸山茂徳
２４億年前Ongeluk 累層の流体包有物から読み取られた高塩濃度の前期原生代海水組成
日本地球惑星科学連合 2009年大会, May 2009 - Saitou, T.; Shibuya, T.; Nishizawa, M.; Kitajima, K.; Komiya, T.; Ueno, Y.; Maruyama, S.
Microthermometry of fluid inclusions in 2.2Ga hydrothermal quartz: Implications for the composition of early Proterozoic seawater
Precambrian world Symposium 2009, Mar. 2009 - Saitou, T.; Shibuya, T.; Nishizawa, M.; Kitajima, K.; Kon, Y.; Sawaki, Y.; Komiya, T.; Maruyama, S.
Microthermometry of fluid inclusions in 2.2Ga hydrothermal quartz: Implications for the composition of early Proterozoic seawater
7th International Symposium for Subsurface Microbiology, Nov. 2008 - Saitou, T.; Shibuya, T.; Nishizawa, M.; Kitajima, K.; Kon, Y.; Sawaki, Y.; Komiya, T.; Maruyama, S.
Microthermometry of fluid inclusions in 2.2Ga hydrothermal quartz: Implications for the composition of early Proterozoic seawater
From Genome to Snowball Earth, Metazoan Evolution and Habitable Planets: Multidisciplinary Relations, Sep. 2008 - Saitou Takuya; Shibuya Takazou; Nishizawa Manabu; Kitajima Kouki; Kon Yoshiaki; Sawaki Yusuke; Komiya Tsuyoshi; HIRATA TAKAFUMI; Maruyama Shigenori
Geochemistry of fluid inclusions in hydrothermal quartz: Implications for composition of paleoseawater
Abstracts of Annual Meeting of the Geochemical Society of Japan, 2008 - Saitou Takuya; Shibuya Takazo; Nishizawa Manabu; Kitajima Kouki; Kon Yoshiaki; Sawaki Yusuke; Komiya Tsuyoshi; Maruyama Shigenori; Hirata Takahumi
Geochemistry of flui inclusions in hydrothermal quartz: Implications for composition of paleoseawater
Annual Meeting of the Geological Society of Japan, 2008
