The role of mantle for atmospheric transition from Archean to Proterozoic

• Project/Area Number: 19KK0091
• Research Category: Fund for the Promotion of Joint International Research (Fostering Joint International Research (B))
• Allocation Type: Multi-year Fund
• Review Section: Medium-sized Section 17:Earth and planetary science and related fields
• Research Institution: Tokyo Institute of Technology
• Principal Investigator: Yuichiro Ueno 東京工業大学, 理学院, 教授 (90422542)
• Co-Investigator(Kenkyū-buntansha): 石川 晃 東京工業大学, 理学院, 准教授 (20524507) ; 青山 慎之介 横浜国立大学, 大学院環境情報研究院, 日本学術振興会特別研究員 (50814232) ; 青木 翔吾 秋田大学, 国際資源学研究科, 助教 (60801967)
• Project Period (FY): 2019-10-07 – 2024-03-31
• Project Status: Completed (Fiscal Year 2023)
• Budget Amount: ¥18,330,000 (Direct Cost: ¥14,100,000、Indirect Cost: ¥4,230,000); Fiscal Year 2022: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000); Fiscal Year 2021: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000); Fiscal Year 2020: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000); Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
• Keywords: GOE / コマチアイト / 硫黄同位体異常 / 白金族元素 / 同位体異常

Outline of Research at the Start

地球大気が酸素を含むようになる約24億年前ころの固体地球の変動に着目し、マントルを含めた物質循環を主に硫黄同位体異常を用いて追跡する。特に西オーストラリア大学との共同研究を推進し、最も連続的な記録が残る地域において野外調査を行う。また、系統的かつ連続的に採取した太古代/原生代境界のコマチアイトおよび深成岩類について、硫黄同位体による物質循環解析、白金族元素の地球化学および年代計測を行い、マントルの化学的・構造的な変動を明らかにする。

Outline of Final Research Achievements

High-precision analysis of multiple sulfur isotope anomalies and platinum-group elements were performed on Archean and Proterozoic komatiites and granitoids. The results showed that sulfur components from subducted oceanic lithosphere were found in some Archean komatiites. Similar Archean seawater components were also found to be present in some granites. On the other hand, the HSE analysis of different ages of komatiites showed that igneous activity within the mantle increased at the end of the Archean. These results suggest that intense volcanism at around Archean/Proterozoic boundary may have significant role for the chemistry of Earth's surface environment.

Academic Significance and Societal Importance of the Research Achievements

本研究の成果は地球表層の酸化還元状態等の環境変動を解読するにあたってこれまで重視されてこなかった火成岩類の地球化学的分析が有用であることを示したものである。高精度の多種硫黄同位体と共振鉄製元素の分析を用いて、地殻物質のリサイクル、太古代マグマ成因論、およびマントルの化学組成特に酸化還元進化とその表層環境への影響を評価するための新たな方法論を提示した学術的意義がある。

Research Products

• [Int'l Joint Research] University of Western Australia(オーストラリア)
• [Int'l Joint Research] Masuku University(ガボン)
• [Int'l Joint Research] School of Earth Sciences/University of Western Australia(オーストラリア)
• [Int'l Joint Research] 西オーストラリア大学(オーストラリア)
• [Int'l Joint Research] 西オーストラリア大学(オーストラリア)
• [Int'l Joint Research] 西オーストラリア大学(オーストラリア)
• [Journal Article] Applicability of quartz tube digestion for the determination of highly siderophile and volatile chalcophile element abundances with Os isotopic compositions using ICP-MS/MS and N-TIMS (2024)
  • Author(s): Fujita Ryo、Nakano Shun、Yokoyama Tetsuya、Ishikawa Akira
  • Journal Title: GEOCHEMICAL JOURNAL Volume: 58 Issue: 1 Pages: 9-27
  • DOI: 10.2343/geochemj.GJ24002
  • ISSN: 0016-7002, 1880-5973
  • Peer Reviewed / Open Access
• [Journal Article] The Paleoarchean Buffalo River komatiites: Progressive melting of a single large mantle plume beneath the growing Kaapvaal craton (2023)
  • Author(s): Netshidzivhe Thendo、Tappe Sebastian、Wilson Allan H.、Ishikawa Akira、Viljoen Fanus
  • Journal Title: Precambrian Research Volume: 393 Pages: 107071-107071
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• [Journal Article] Sulfur in Archean komatiite implies early subduction of oceanic lithosphere (2022)
  • Author(s): Yusuke Kubota, Fumihiro Matsuura, Kenji Shimizu, Akira Ishikawa, Yuichiro Ueno
  • Journal Title: Earth and Plenetary Science Letters Volume: 598 Pages: 117826-117826
  • DOI: 10.1016/j.epsl.2022.117826
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Absorption spectra measurements at ~1 cm^–1 spectral resolution of ³²S, ³³S, ³⁴S, and ³⁶S sulfur dioxide for the 206–220 nm region and applications to modeling of the isotopic self-shielding (2022)
  • Author(s): Endo Yoshiaki、Danielache Sebastian、Ogawa Moeko、Ueno Yuichiro
  • Journal Title: GEOCHEMICAL JOURNAL Volume: 56 Issue: 1 Pages: 40-56
  • DOI: 10.2343/geochemj.GJ22004
  • NAID: 130008164877
  • ISSN: 0016-7002, 1880-5973
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• [Journal Article] Testing the Ontong Java Nui Hypothesis: The Largest Supervolcano Ever on Earth (2021)
  • Author(s): SANO Takashi、TEJADA Maria Luisa G.、NAKANISHI Masao、HANYU Takeshi、MIURA Seiichi、SUETSUGU Daisuke、TONEGAWA Takashi、ISHIKAWA Akira、SHIMIZU Kenji、SHIMIZU Shoka
  • Journal Title: Journal of Geography (Chigaku Zasshi) Volume: 130 Issue: 4 Pages: 559-584
  • DOI: 10.5026/jgeography.130.559
  • NAID: 130008091273
  • ISSN: 0022-135X, 1884-0884
  • Year and Date: 2021-08-25
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Tracing sulfur sources in the crust via SIMS measurement of sulfur isotopes in apatite (2021)
  • Author(s): Hammerli Johannes、Greber Nicolas D.、Martin Laure、Bouvier Anne-Sophie、Kemp Anthony I.S.、Fiorentini Marco L.、Spangenberg Jorge E.、Ueno Yuichiro、Schaltegger Urs
  • Journal Title: Chemical Geology Volume: in press Pages: 120242-120242
  • DOI: 10.1016/j.chemgeo.2021.120242
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• [Journal Article] Spatial distribution and speciation of sulfur in Ediacaran limestones with μ-XRF imaging and XANES spectroscopy: Implications for diagenetic mobilization of sulfur species (2021)
  • Author(s): Matsu'ura Fumihiro、Nakada Ryoichi、Usui Tomohiro、Sawaki Yusuke、Ueno Yuichiro、Kajitani Iori、Saitoh Masafumi
  • Journal Title: Geochimica et Cosmochimica Acta Volume: 306 Pages: 20-43
  • DOI: 10.1016/j.gca.2021.05.010
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Multiple sulfur isotope chemostratigraphy across the Permian Triassic boundary at Chaotian, China: Implications for a shoaling model of toxic deep‐waters (2021)
  • Author(s): Saitoh Masafumi、Ueno Yuichiro、Isozaki Yukio、Yoshida Naohiro
  • Journal Title: Island Arc Volume: 30 Issue: 1
  • DOI: 10.1111/iar.12398
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• [Journal Article] Highly refractory dunite formation at Gibbs Island and Bruce Bank, and its role in the evolution of the circum-Antarctic continent. (2021)
  • Author(s): Akizawa, K., Ishikawa, A., Fujita, R., Choi., S.H.
  • Journal Title: The Canadian Mineralogist Volume: 59 Issue: 6 Pages: 1731-1753
  • DOI: 10.3749/canmin.2100030
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Sedimentary record of Upper Triassic impact in the Lagonegro Basin, southern Italy: Insights from highly siderophile elements and Re-Os isotope stratigraphy across the Norian/Rhaetian boundary (2021)
  • Author(s): Sato Honami、Ishikawa Akira、Onoue Tetsuji、Tomimatsu Yuki、Rigo Manuel
  • Journal Title: Chemical Geology Volume: 586 Pages: 120506-120506
  • DOI: 10.1016/j.chemgeo.2021.120506
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• [Journal Article] Halogen heterogeneity in the subcontinental lithospheric mantle revealed by I/Br ratios in kimberlites and their mantle xenoliths from South Africa, Greenland, China, Siberia, Canada, and Brazil (2021)
  • Author(s): Toyama, N., Ishikawa, A., Yamamoto, J., Kaneoka, I., Muramatsu, Y.
  • Journal Title: American Mineralogist Volume: 106 Issue: 12 Pages: 1890-1899
  • DOI: 10.2138/am-2021-7332
  • Peer Reviewed
• [Journal Article] Seismic evidence for a thermochemical mantle plume underplating the lithosphere of the Ontong Java Plateau (2021)
  • Author(s): Isse Takehi、Suetsugu Daisuke、Ishikawa Akira、Shiobara Hajime、Sugioka Hiroko、Ito Aki、Kawano Yuki、Yoshizawa Kazunori、Ishihara Yasushi、Tanaka Satoru、Obayashi Masayuki、Tonegawa Takashi、Yoshimitsu Junko
  • Journal Title: Communications Earth & Environment Volume: 2 Issue: 1 Pages: 98-98
  • DOI: 10.1038/s43247-021-00169-9
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Globally distributed iridium layer preserved within the Chicxulub impact structure (2021)
  • Author(s): Goderis, S., Sato, H., Ferrire, L., Schmitz, B., Burney, D., Kaskes, P., Vellekoop, J., Wittmann, A., Schulz, T., Chernonozhkin, S.M., Claeys, P., de Graaff, S. J., Dehais, T., de Winter, N.J., Elfman, M.F., Ishikawa, A., et al.
  • Journal Title: Science Advances Volume: 7 Issue: 9 Pages: 3647-3647
  • DOI: 10.1126/sciadv.abe3647
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] New geochronological constraints on the middle Archean Shurugwi greenstone belt toward an understanding of the crustal evolution of the Zimbabwe Craton (2021)
  • Author(s): Sawada Hikaru、Sawaki Yusuke、Sakata Shuhei、Ishikawa Akira、Muteta Brian、Isozaki Yukio、Maruyama Shigenori
  • Journal Title: Journal of African Earth Sciences Volume: 173 Pages: 104021-104021
  • DOI: 10.1016/j.jafrearsci.2020.104021
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] The Great Oxidation Event preceded a Paleoproterozoic “snowball Earth” (2020)
  • Author(s): Warke Matthew R.、Di Rocco Tommaso、Zerkle Aubrey L.、Lepland Aivo、Prave Anthony R.、Martin Adam P.、Ueno Yuichiro、Condon Daniel J.、Claire Mark W.
  • Journal Title: Proceedings of the National Academy of Sciences Volume: 117 Issue: 24 Pages: 13314-13320
  • DOI: 10.1073/pnas.2003090117
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• [Journal Article] Mission to Planet Earth: The First Two Billion Years (2020)
  • Author(s): St?eken E. E.、Som S. M.、Claire M.、Rugheimer S.、Scherf M.、Spro? L.、Tosi N.、Ueno Y.、Lammer H.
  • Journal Title: Space Science Reviews Volume: 216 Issue: 2 Pages: 31-31
  • DOI: 10.1007/s11214-020-00652-3
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Multiple Sulfur Isotope Records of the 3.22 Ga Moodies Group, Barberton Greenstone Belt (2020)
  • Author(s): Saitoh Masafumi、Nabhan Sami、Thomazo Christophe、Olivier Nicolas、Moyen Jean-Fran?ois、Ueno Yuichiro、Marin-Carbonne Johanna
  • Journal Title: Geosciences Volume: 10 Issue: 4 Pages: 145-145
  • DOI: 10.3390/geosciences10040145
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Occurrence and chemical composition of the Eoarchean carbonate rocks of the Nulliak supracrustal rocks in the Saglek Block of northeastern Labrador, Canada (2020)
  • Author(s): Yoshida Satoshi、Ishikawa Akira、Aoki Shogo、Komiya Tsuyoshi
  • Journal Title: Island Arc Volume: 30 Issue: 1 Pages: 12381-12381
  • DOI: 10.1111/iar.12381
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] A framework for understanding Mo isotope records of Archean and Paleoproterozoic Fe- and Mn-rich sedimentary rocks: Insights from modern marine hydrothermal Fe-Mn oxides (2020)
  • Author(s): Goto Kosuke T.、Sekine Yasuhito、Shimoda Gen、Hein James R.、Aoki Shogo、Ishikawa Akira、Suzuki Katsuhiko、Gordon Gwyneth W.、Anbar Ariel D.
  • Journal Title: Geochimica et Cosmochimica Acta Volume: 280 Pages: 221-236
  • DOI: 10.1016/j.gca.2020.04.017
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] A simple determination of whole-rock major- and trace-element composition for peridotite by micro-XRF spectrometer and ICP-MS using fused-glass bead (2020)
  • Author(s): Akizawa Norikatsu、Ishikawa Akira、Kogiso Tetsu
  • Journal Title: GEOCHEMICAL JOURNAL Volume: 54 Issue: 2 Pages: 81-90
  • DOI: 10.2343/geochemj.2.0587
  • NAID: 130007831716
  • ISSN: 0016-7002, 1880-5973
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Compositional heterogeneity of Archean mantle estimated from Sr and Nd isotopic systematics of basaltic rocks from North Pole, Australia, and the Isua supracrustal belt, Greenland (2020)
  • Author(s): Nakamura Hitomi、Sano Ayane、Kagami Saya、Yokoyama Tetsuya、Ishikawa Akira、Komiya Tsuyoshi、Iwamori Hikaru
  • Journal Title: Precambrian Research Volume: 347 Pages: 105803-105803
  • DOI: 10.1016/j.precamres.2020.105803
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Hydrogenation reactions of carbon on Earth: Linking methane, margarine, and life (2020)
  • Author(s): McGlynn Shawn E.、Glass Jennifer B.、Johnson-Finn Kristin、Klein Frieder、Sanden Sebastian A.、Schrenk Matthew O.、Ueno Yuichiro、Vitale-Brovarone Alberto
  • Journal Title: American Mineralogist Volume: 105 Issue: 5 Pages: 599-608
  • DOI: 10.2138/am-2020-6928ccbyncnd
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Hydrothermal Chromitites from the Oman Ophiolite: The Role of Water in Chromitite Genesis (2020)
  • Author(s): Arai Shoji、Miura Makoto、Tamura Akihiro、Akizawa Norikatsu、Ishikawa Akira
  • Journal Title: Minerals Volume: 10 Issue: 3 Pages: 217-217
  • DOI: 10.3390/min10030217
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Presentation] Highly siderophile element geochemistry of Phanerozoic komatiites and related mafic-ultramafic rocks in Gorgona island, Columbia (2023)
  • Author(s): Ihara Yuta, Akira Ishikawa, Tetsuya Yokoyama, Kenji Shimizu
  • Organizer: Goldschmidt2023
  • Int'l Joint Research
• [Presentation] 顕生代コマチアイトから制約するマントルの強親鉄性元素組成進化 (2023)
  • Author(s): 井原悠太, 石川 晃, 横山 哲也, 清水健二
  • Organizer: 日本地球化学会第70回年会
• [Presentation] Redox change in Paleoproterozoic estimated from multiple sulfur isotope analysis of Francevillian successions in Gabon (2023)
  • Author(s): 栗原在, 佐藤友彦, 澤木佑介, Moussavou Mathieu, 上野雄一郎
  • Organizer: Japan Geoscience Union Meeting 2023
• [Presentation] Multiple sulfur isotope geochemistryof pyrites in Paleoproterozoic blackshales from Francevillian succession,Gabon (2023)
  • Author(s): Kurihara, A., Sato, T., Sawaki, Y., Moussavou, M., Ueno, Y.
  • Organizer: Goldshmidt conference 2023
  • Int'l Joint Research
• [Presentation] The compositional dichotomy of ca. 3.3 Ga komatiites from the West Pilbara (2022)
  • Author(s): Yusuke Kubota, Shun Nakano, Akira Ishikawa, Yuichiro Ueno
  • Organizer: Goldschmidt2022
  • Int'l Joint Research
• [Presentation] Mantle sources of Phanerozoic komatiite from Gorgona Island, Colombia: Implication from osmium isotope heterogeneity (2022)
  • Author(s): Ihara Yuta, Akira Ishikawa, Kenji Shimizu, Tetsuya Yokoyama
  • Organizer: Japan Geooscience Union Meeting 2022
• [Presentation] Siderophile elements in Paleoarchean Camel Creek komatiites from East Pilbara Terrane, Western Australia: implications for secular evolution of Archean-Proterozoic mantle (2022)
  • Author(s): Shun Nakano, Akira Ishikawa, Yuichiro Ueno, Tetsuya Yokoyama
  • Organizer: Japan Geooscience Union Meeting 2022
• [Presentation] Sulfur mass-independent fractionation patterns during SO2 photolysis under low temperature and low pressure atmosphere: implication for Archean atmospheric composition (2021)
  • Author(s): Yoshiaki Endo, Yasuhito Sekine, Yuichiro Ueno
  • Organizer: JpGU
  • Int'l Joint Research
• [Presentation] The micro-scale speciation analyses of sulfur in the Ediacaran limestones: Implications for diagenetic mobilization of sulfur species (2021)
  • Author(s): Fumihiro Matsuura, Ryoichi Nakada, Yusuke Sawaki, Yuichiro Ueno, Masafumi Saitoh, Kajitani Iori, Tomohiro Usui
  • Organizer: JpGU
  • Int'l Joint Research
• [Presentation] Application of fluorination method to isotopologue biogeochemistry (2021)
  • Author(s): Yuichiro Ueno, Koudai Taguchi, Toshiki Katsuta, Mayuko Nakagawa, Naohiro Yoshida, Alexis Gilbert
  • Organizer: Goldschmidt Conference
  • Int'l Joint Research
• [Presentation] Δ34S18O systematics of modern sulfate (2021)
  • Author(s): Toshiki Katsuta, Yuichiro Ueno, Mayuko Nakagawa, Riho Aoki, Naohiro Yoshida
  • Organizer: Goldschmidt Conference
  • Int'l Joint Research
• [Presentation] Missing negative Δ33S reservoir in mantle inferred from 2.7 Ga komatiite (2021)
  • Author(s): Yusuke Kubota, Fumihiro Matsu'ura, Kenji Shimizu, Akira Ishikawa, Yuichiro Ueno
  • Organizer: Goldschmidt Conference
  • Int'l Joint Research
• [Presentation] Highly siderophile elements behavior in the Paleoarchean Camel Creek komatiites from East Pilbara Terrane, Western Australia (2021)
  • Author(s): Shun Nakano, Akira Ishikawa, Yuichiro Ueno, Tetsuya Yokoyama
  • Organizer: Goldschmidt Conference
  • Int'l Joint Research
• [Presentation] Ancient Organic Material and Improving Detection Confidence Using Stable Isotopes (2021)
  • Author(s): Yuichiro Ueno
  • Organizer: NAS Committee on Astrobiology and Planetary Sciences 2021 Fall Meeting
  • Int'l Joint Research / Invited
• [Presentation] Atmospheric CO in prebiotic Earth-like planet (2021)
  • Author(s): Yuichiro Ueno
  • Organizer: AGU Fall Meeting
  • Int'l Joint Research / Invited
• [Presentation] Highly siderophile element mobility during serpentinization of mantle wedge peridotite (2021)
  • Author(s): Akira Ishikawa, Natsuki Nakamura, Tetsuya Yokoyama
  • Organizer: Goldschmidt Conference
  • Int'l Joint Research
• [Presentation] The Paleoarchean Buffalo River Komatiites: Evidence for Progressive Melting of a Single Large Mantle Plume beneath the Growing Kaapvaal Continent (2021)
  • Author(s): Thendo Netshidzivhe, Sebastian Tappe, Allan Wilson, Akira Ishikawa, Fanus Viljoen
  • Organizer: Goldschmidt Conference
  • Int'l Joint Research
• [Presentation] Sampling source heterogeneities that bind the Ontong Java Nui puzzle together (2021)
  • Author(s): Maria Luisa Garcia Tejada, Takashi Sano, Takeshi Hanyu, Anthony Koppers,Masao Nakanishi,Akira Ishikawa,Takashi Miyazaki, Kenichiro Tani, Shoka Shimizu, Qing Chang, Bogdan Vaglarov
  • Organizer: Goldschmidt Conference
  • Int'l Joint Research
• [Presentation] Highly siderophile elements in Earth's oldest rocks from Acasta Gniess Complex, Canada: an impact melt origin or not? (2021)
  • Author(s): Akira Ishikawa, Keiko Koshida, Katsuhiko Suzuki, Tetsuya Yokoyama, ,Tsuyoshi Komiya
  • Organizer: JpGU
  • Int'l Joint Research
• [Presentation] New constraints on atmospheric oxygenation (2020)
  • Author(s): Warke M. R., Di Rocco T., Zerkle A. L., Lepland A., Prave A. R., Martin A. P., Ueno Y., Condon D. J., Claire M. W.
  • Organizer: GSA Annual Meeting
  • Int'l Joint Research / Invited
• [Presentation] A Development of SO2F2 Method to Measure Sulfate Isotopologues (2020)
  • Author(s): Katsuta T, Ueno Y, Nakagawa M, Aoki R, Yoshida N
  • Organizer: Goldschmidt Conference
  • Int'l Joint Research
• [Presentation] The Great Oxidation Event Preceded a Paleoproterozoic 窶?snowball Earth窶? (2020)
  • Author(s): Warke M, Di Rocco T, Zerkle A, Lepland A, Prave A, Martin A, Ueno Y, Claire M
  • Organizer: Goldschmidt Conference
  • Int'l Joint Research
• [Presentation] Equilibrium and Kinetic Fractionation on S-O Clumping of Sulfate (2020)
  • Author(s): Ueno Y, Nakagawa M, Katsuta T, Aoki R, Yoshida N
  • Organizer: Goldschmidt Conference
  • Int'l Joint Research
• [Presentation] In situ Hydrogen Isotope Analysis of Pyroxenes in Precambrian Gabbro (2020)
  • Author(s): Yagi H, Itoh S, Ishikawa A, Shibuya T, Ueno Y
  • Organizer: Goldschmidt Conference
  • Int'l Joint Research
• [Presentation] Re-Os systematic of volcanic rock from East Cone, Kamchatka Peninsula (2020)
  • Author(s): MITSUDE Yuri, NISHIZAWA Tatsuji, NAKAMURA Hitomi, CHURIKOVA Tatiana, GORDEYCHIK Boris , ISHIKAWA Akira, FUJITA Ryo, IWAMORI Hikaru, SAKATA Shuhei
  • Organizer: JpGU-AGU Joint Meeting
• [Presentation] Highly siderophile element mobility during serpentinization of forearc mantle peridotite (2020)
  • Author(s): Natuski Nakamura, Akira Ishikawa, Tetsuya Yokoyama
  • Organizer: JpGU-AGU Joint Meeting
• [Presentation] 神津島流紋岩及び玄武岩質捕獲岩の地球化学的研究 (2020)
  • Author(s): 田村 達也, 横山 哲也, 石川 晃
  • Organizer: JpGU-AGU Joint Meeting
• [Presentation] ハワイ諸島産マントル捕獲岩の全岩オスミウム同位体と強親鉄性元素組成 (2020)
  • Author(s): 藤田 遼, 石川 晃, 横山 哲也, Michael Garcia
  • Organizer: JpGU-AGU Joint Meeting
• [Presentation] ペルム紀パンサラッサ海Sr収支変化 (2020)
  • Author(s): 可児 智美, 磯崎 行雄, 三澤 啓司, 石川 晃, 米田 成一
  • Organizer: JpGU-AGU Joint Meeting
• [Presentation] 太平洋赤色泥における白亜紀―古第三紀境界付近の古地磁気記録 (2020)
  • Author(s): 臼井 洋一, 山崎 俊嗣, 大田 隼一郎, 佐藤 峰南, 石川 晃
  • Organizer: JpGU-AGU Joint Meeting
• [Presentation] Exploring the World's Largest LIP: Testing the Ontong Java Nui hypothesis (2020)
  • Author(s): Sano Takashi, Tejada Maria Luisa, Neal Clive, Coffin Millard, Nakanishi Masao5, Michael Peter, Geldmacher Jテカrg, Hanyu Takeshi, Miura Seiichi, Timm Christian, Koppers Anthony, Suetsugu Daisuke, Tonegawa Takashi, Ishikawa Akira, Shimizu Kenji, Castillo Paterno
  • Organizer: JpGU-AGU Joint Meeting
• [Presentation] Sulfur isotope anomaly of igneous sulfides in the Belingwe komatiites: Implication for the onset of subduction (2019)
  • Author(s): Kubota Y., Ueno Y., Shimizu K., Ishikawa A., Matsuura F.
  • Organizer: AGU Fall Meeting
  • Int'l Joint Research