High primal productivity and volcanic activity at the most severe mass extinction event

• Project/Area Number: 17K05689
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Stratigraphy/Paleontology
• Research Institution: The University of Tokyo
• Principal Investigator: Takahashi Satoshi 東京大学, 大学院理学系研究科(理学部), 助教 (60615251)
• Co-Investigator(Kenkyū-buntansha): 黒田 潤一郎 東京大学, 大気海洋研究所, 准教授 (10435836) ; 朝比奈 健太 国立研究開発法人産業技術総合研究所, 地質調査総合センター, 研究員 (40728276)
• Project Period (FY): 2017-04-01 – 2020-03-31
• Project Status: Completed (Fiscal Year 2019)
• Budget Amount: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000); Fiscal Year 2019: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2017: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
• Keywords: 古生代 / 中生代 / 大量絶滅 / 海洋無酸素 / 高一次生産 / 火山活動 / オスミウム同位体比 / 化石マレイミド / 深海堆積岩 / ペルム紀 / 三畳紀 / 遠洋域深海 / ペルム紀三畳紀境界

Outline of Final Research Achievements

This research project aims to reveal the coincidence of large volcanic activities and possible marine environmental responses such as the changes in primary producers and oxygen-poor oceanic condition during the severest mass extinction event in the Earth history (about 250 million years ago). To this end, we conducted fieldworks in the localities of deep-sea sedimentary which recorded the extinction event and used the collected samples for geochemical analysis (organic molecules, osmium isotopes, mercury concentrations, redox-sensitive elements). As our results, the trends that can be interpreted as the volcanic activity and enhanced weathering of volcanic rocks, which is indicated by the shift to low osmium isotope ratio and the peak of mercury concentration in the deep ocean stratigraphy, was obtained. At the similar time as this trend, ocean oxygen depletion occurs, and the increase in bacteriochlorophyll biomass slightly delay.

Academic Significance and Societal Importance of the Research Achievements

学術的意義は地球史上の環境イベントの要因・メカニズムの理解への貢献である。本研究は、大量絶滅の海洋環境変化が実際に火山活動のシグナルと合うことを実証的に示した。また、研究活動で明らかになったこの課題に対する技術的諸問題を公表して議論することで、さらなる地球環境史研究の活発化が見込まれる。
社会的意義は、地球環境の未来を見通す上での知識の蓄積である。知識というのは、多量の温室効果ガスが大規模火山活動によって放出された2億5千万年前の海洋がその後広く無酸素化しそのまま維持されていたという事実である。これを基に、人類個人の時間スケールよりはるかに大きな時間で環境が変化しうることを意識して頂きたい。

Research Products

• [Int'l Joint Research] リーズ大学/フル大学(英国)
• [Journal Article] Late Cretaceous stratigraphy and paleoceanographic evolution in the Great Australian Bight Basin based on results from IODP Site U1512 (2020)
  • Author(s): MacLeod, K. G., L. T. White, C. C. Wainman, M. Martinez, M. M. Jones, S. J. Batenburg, L. Riquier, S.J. Haynes, D. K. Watkins, K. A. Bogus, H. -J. Brumsack, R. do Monte Guerra, K. M. Edgar, T. Edvardsen, M. L. G. Tejada, et al.
  • Journal Title: Gondwana Research Volume: 83 Pages: 80-95
  • DOI: 10.1016/j.gr.2020.01.009
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] The Effects of Clay Minerals on Methylated Naphthalenes as Maturity Indicators of Sedimentary Organic Matter (2020)
  • Author(s): Asahina Kenta、Nakajima Takeshi、Morimoto Kazuya、Hanamura Yasuaki、Kobayashi Miyuki
  • Journal Title: Chemistry Letters Volume: ー Issue: 6 Pages: 728-731
  • DOI: 10.1246/cl.200075
  • NAID: 130007852106
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Conodont-based age calibration of the Middle Triassic Anisian radiolarian biozones in pelagic deep-sea bedded chert (2019)
  • Author(s): Muto Shun、Takahashi Satoshi、Yamakita Satoshi、Soda Katsuhito、Onoue Tetsuji
  • Journal Title: BULLETIN OF THE GEOLOGICAL SURVEY OF JAPAN Volume: 70 Issue: 1-2 Pages: 43-89
  • DOI: 10.9795/bullgsj.70.43
  • NAID: 130007631568
  • ISSN: 1346-4272, 2186-490X
  • Year and Date: 2019-03-29
  • Peer Reviewed / Open Access
• [Journal Article] Iron-depleted pelagic water at the end-Permian mass extinction inferred from chemical species of iron and molybdenum in deep-sea sedimentary rocks (2019)
  • Author(s): Takahashi Satoshi、Nakada Ryoichi、Watanabe Yusuke、Takahashi Yoshio
  • Journal Title: Palaeogeography, Palaeoclimatology, Palaeoecology Volume: 516 Pages: 384-399
  • DOI: 10.1016/j.palaeo.2018.12.014
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Natural assemblages of the conodont Clarkina in lowermost Triassic deep-sea black claystone from northeastern Japan, with probable soft-tissue impressions (2019)
  • Author(s): Takahashi Satoshi、Yamakita Satoshi、Suzuki Noritoshi
  • Journal Title: Palaeogeography, Palaeoclimatology, Palaeoecology Volume: 524 Pages: 212-229
  • DOI: 10.1016/j.palaeo.2019.03.034
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Diazotrophy Drives Primary Production in the Organic-Rich Shales Deposited Under a Stratified Environment During the Messinian Salinity Crisis (Vena del Gesso, Italy) (2019)
  • Author(s): Isaji Yuta、Kawahata Hodaka、Takano Yoshinori、Ogawa Nanako O.、Kuroda Junichiro、Yoshimura Toshihiro、Lugli Stefano、Manzi Vinicio、Roveri Marco、Ohkouchi Naohiko
  • Journal Title: Frontiers in Earth Science Volume: 7 Pages: 1-13
  • DOI: 10.3389/feart.2019.00085
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Indian Monsoonal Variations During the Past 80?Kyr Recorded in NGHP-02 Hole 19B, Western Bay of Bengal: Implications From Chemical and Mineral Properties (2019)
  • Author(s): Ota Yuki、Kawahata Hodaka、Kuroda Junichiro、Yamaguchi Asuka、et al.
  • Journal Title: Geochemistry, Geophysics, Geosystems Volume: 20 Issue: 1 Pages: 148-165
  • DOI: 10.1029/2018gc007772
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Monsoon-influenced variations in plankton community structure and upper-water column stratification in the western Bay of Bengal during the past 80?ky (2019)
  • Author(s): Ota Yuki、Kuroda Junichiro、Yamaguchi Asuka、Suzuki Atsushi、Araoka Daisuke、Ishimura Toyoho、Kawahata Hodaka
  • Journal Title: Palaeogeography, Palaeoclimatology, Palaeoecology Volume: 521 Pages: 138-150
  • DOI: 10.1016/j.palaeo.2019.02.020
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Intramolecular benzoallene-;alkyne cycloaddition initiated by site-selective SN2’ reaction of epoxytetracene en route to π-extended pyracylene (2019)
  • Author(s): K. Kitamura, K. Asahina, K. Adachi, T. Hamura*
  • Journal Title: Chem. Commun. Volume: 55 Issue: 74 Pages: 11021-11024
  • DOI: 10.1039/c9cc05500b
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] High sediment input and possible oceanic anoxia in the pelagic Panthalassa during the latest Olenekian and early Anisian: Insights from a new deep-sea section in Ogama, Tochigi, Japan (2018)
  • Author(s): Muto, S., Takahashi, S., Yamakita, S., Suzuki, N., Suzuki, N. and Aita, Y.
  • Journal Title: Palaeogeography, Palaeoclimatology, Palaeoecology Volume: 490 Pages: 687-707
  • DOI: 10.1016/j.palaeo.2017.11.060
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Methylated naphthalenes as indicators for evaluating the source and source rock lithology of degraded oils (2018)
  • Author(s): Asahina Kenta、Suzuki Noriyuki
  • Journal Title: Organic Geochemistry Volume: 124 Pages: 46-62
  • DOI: 10.1016/j.orggeochem.2018.06.012
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Tetrakis(phenylethynyl)tetracene: A New π‐Extended Rubrene Derivative (2018)
  • Author(s): Kitamura Kei、Asahina Kenta、Nagai Yusaku、Sugiyama Haruki、Uekusa Hidehiro、Hamura Toshiyuki
  • Journal Title: Chemistry A European Journal Volume: 24 Issue: 53 Pages: 14034-14038
  • DOI: 10.1002/chem.201803294
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] A new synthetic route to 5,6,11,12-tetraarylethynyltetracenes (2018)
  • Author(s): Kitamura Kei、Asahina Kenta、Nagai Yusaku、Zhang Keshu、Nomura Shogo、Tanaka Katsunori、Hamura Toshiyuki
  • Journal Title: Organic & Biomolecular Chemistry Volume: 16 Issue: 47 Pages: 9143-9146
  • DOI: 10.1039/c8ob02450b
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Post-Eocene intensification of deep-water circulation in the central South Pacific: Micropalaeontological clues from dredged sites along the eastern Manihiki Plateau margin (2018)
  • Author(s): Ando Atsushi、Kuroda Junichiro、Werner Reinhard、Hoernle Kaj、Huber Brian T.
  • Journal Title: Terra Nova Volume: 31 Issue: 1 Pages: 28-38
  • DOI: 10.1111/ter.12366
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Tentative identification of diagenetic products of cyclic biphytanes in sedimentary rocks from the uppermost Permian and Lower Triassic (2017)
  • Author(s): Saito Ryosuke、Kaiho Kunio、Oba Masahiro、Tong Jinnan、Chen Zhong-Qiang、Tian Li、Takahashi Satoshi、Fujibayashi Megumu
  • Journal Title: Organic Geochemistry Volume: 111 Pages: 144-153
  • DOI: 10.1016/j.orggeochem.2017.04.013
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Characterization of sulfate mineral deposits in central Thailand (2017)
  • Author(s): Junichiro Kuroda, Hidetoshi Hara, Katsumi Ueno, Thasinee Charoentitirat, Teruyuki Maruoka, Takashi Miyazaki, Akira Miyahigashi and Stefano Lugli,
  • Journal Title: Island Arc Volume: 26 Issue: 2
  • DOI: 10.1111/iar.12175
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Radiogenic isotopic records for decoding the Earth's surface environments in the geological past (2017)
  • Author(s): 黒田 潤一郎
  • Journal Title: Chikyukagaku Volume: 51 Issue: 1 Pages: 15-28
  • DOI: 10.14934/chikyukagaku.51.15
  • NAID: 130005531001
  • ISSN: 0386-4073, 2188-5923
  • Peer Reviewed
• [Presentation] 前期三畳紀遠洋域黒色粘土岩から産した軟体部の痕跡とその化石化過程 (2020)
  • Author(s): 高橋 聡，山北 聡，鈴木 紀毅，
  • Organizer: C08，日本古生物学会169回例会, 2020年2月8日（口頭発表）
• [Presentation] Chemical species of iron and molybdenum across the deep-sea Permian-Triassic boundary: evidence of the iron-depleted pelagic water at the end-Permian (2019)
  • Author(s): Satoshi Takahashi, Ryoichi Nakada, Yusuke Watanabe, Yoshio Takahashi
  • Organizer: SSP2.4/GMPV6.9, EGU general Assembly 2019, Vienna, Austria, 11 April (Poster).
  • Int'l Joint Research
• [Presentation] Potential impact of the pelagic deep-sea anoxia on the end-Permian mass extinction event (2019)
  • Author(s): Satoshi Takahashi, Kunio Kaiho, Satoshi Yamakita, Masahiro Oba, Shin-ichi Yamasaki, Noriyoshi Tsuchiya, Takeshi Kakegawa, Takeyoshi Yoshida, Noritoshi Suzuki,Masayuki Ehiro, Ryoichi Nakada, Yusuke Watanabe,Yoshio Takahashi, Yasumasa Ogawa, Kazuhiko Kimura
  • Organizer: C5.2, IGC 19th International Congress on the Carboniferous and Permian, Cologne Germany, 2 August 2019. (Oral)
  • Int'l Joint Research
• [Presentation] Natural assemblages of the platform-type conodont in lowermost Triassic deep-sea claystone from northeastern Japan, with probable soft-tissue impressions (2019)
  • Author(s): Satoshi Takahashi, Satoshi Yamakita, Noritoshi Suzuki
  • Organizer: IGC 19th International Congress on the Carboniferous and Permian, 29 July 8211; 2 August, 2019. (Poster)
  • Int'l Joint Research
• [Presentation] Chemical species of iron and molybdenum in deep-sea sedimentary rocks across the Permian-Triassic boundary (2019)
  • Author(s): Satoshi Takahashi, Ryoichi Nakada, Yusuke Watanabe, Yoshio Takahashi
  • Organizer: P362, Goldschmidt 2019, Barcelona, Spain, 19 August 2019. (Poster)
  • Int'l Joint Research
• [Presentation] Marine anoxia and mass extinction a ubiquitous link? (2019)
  • Author(s): Paul Wignall, Satoshi Takahashi
  • Organizer: GC5-Mass-22, European Geoscience Union Galileo Conferences Mass extinctions, recovery and resilience, Utrecht, the Netherland 28 August 2019. (Oral)
  • Int'l Joint Research
• [Presentation] Conodont natural assemblages in lowermost Triassic deep-sea claystone from northeastern Japan, with probable soft-tissue impressions (2019)
  • Author(s): Satoshi Takahashi, Satoshi Yamakita, Noritoshi Suzuki
  • Organizer: GC5-Mass-34 European Geoscience Union Galileo Conferences Mass extinctions, recovery and resilience, Utrecht, the Netherland 28-31 August 2019. (Poster)
  • Int'l Joint Research
• [Presentation] 海水のOs同位体変動から解き明かす地球内部活動と表層環境変動 (2019)
  • Author(s): 鈴木勝彦, 黒田潤一郎, Maria Luisa G. Tejada, 後藤孝介, 藤崎渉
  • Organizer: 日本地球化学会2019年度大会, 1B08, 東京, 2019年9月17日.
  • Invited
• [Presentation] ロードハウライズ掘削コアの白亜紀/古第三紀境界層の層序再検討 (2019)
  • Author(s): 黒田潤一郎, 萩野恭子, 臼井洋一, 斎藤実篤, 坂井三郎
  • Organizer: 日本地球化学会2019年度大会, 1E05, 東京, 2019年9月17 日.
• [Presentation] XRDを用いた生物源シリカ量変動の抽出 (2019)
  • Author(s): 吉岡純平, 多田隆治, 黒田潤一郎, 松崎賢史, 多田賢弘, 佐久間杏樹, 梅宮悠輔
  • Organizer: 日本地球化学会2019年度大会, 1E08, 東京, 2019年9月17 日.
• [Presentation] Coordinated sample preparation with cryo-FIB-SEM and X-ray CT: Applications to chemical analysis for fluid inclusions in minerals, (2019)
  • Author(s): 兒玉優, 富岡尚敬, 川本竜彦, 黒田潤一郎, 村山雅史, 伊藤元雄
  • Organizer: 日本地球惑星科学連合2019年大会, SCG52-01, 千葉, 2019年05月30日.
• [Presentation] [MIS03-06] The spatial-temporal patterns of Indian monsoonal variations during the past 80 kyr recorded in NGHP-02 Hole 19B, western Bay of Bengal: Implications from chemical and mineral properties (2019)
  • Author(s): 太田雄貴, 川幡穂高, 黒田潤一郎, 鈴木淳, 荒岡大輔, 山口飛鳥, 阿部彩子
  • Organizer: 日本地球惑星科学連合2019年大会, MIS03-06, 千葉, 2019年05月30日.
• [Presentation] 過去100万年間の西赤道太平洋暖水塊における鉛直水温構造の復元 (2019)
  • Author(s): 水野文人, 佐川拓也, 向田圭佑, 久保田好美, 山崎俊嗣, 黒田潤一郎
  • Organizer: 日本地球惑星科学連合2019年大会, MIS19-06, 千葉, 2019年05月29日.
• [Presentation] Response of structurally substituted sulfur in foraminifera shells to glacial-interglacial changes: a 1.0-million-year record from the Ontong-Java Plateau (2019)
  • Author(s): 吉村寿紘, 為則雄祐, 黒田潤一郎, 黒柳あずみ, 大河内直彦
  • Organizer: 日本地球惑星科学連合2019年大会, BPT04-03, 千葉, 2019年05月26日.
• [Presentation] Reestablishment of the Mesozoic and Cenozoic Stratigraphic Events of the Fergana Basin, Uzbekistan (2019)
  • Author(s): Otabek Anvarov, 久田健一郎, 丸岡照幸, 黒田潤一郎, Sherzod Makhmudov
  • Organizer: 日本地球惑星科学連合2019年大会, SGL27-P11, 千葉, 2019年05月30日.
• [Presentation] [BCG08-P01] 白亜紀アプチアン/アルビアン境界における海洋オスミウム同位体比記録の復元: Oceanic Anoxic Event 1bと大規模火成活動との関連解明にむけて (2019)
  • Author(s): 松本廣直, 黒田潤一郎, Rodolfo Coccioni, 大河内直彦, 小川奈々子, 坂井三郎, 鈴木勝彦, Fabrizio Frontalini, Andrea Mazzoli
  • Organizer: 日本地球惑星科学連合2019年大会, BCG08-P01, 千葉, 2019年05月28日.
• [Presentation] Novel approach for rapid source rock evaluation in crude oils, (2019)
  • Author(s): Kenta Asahina, Tadashi Nemoto
  • Organizer: Goldschmidt 2019 Barcelona, Spain, (oral)
  • Int'l Joint Research
• [Presentation] 原油の構造選択的NMR プロファイリング (2019)
  • Author(s): 朝比奈健太,根本 直
  • Organizer: 第37回有機地球化学シンポジウム(口頭発表)
• [Presentation] NMR-Petro analysis; A novel methodology for molecular indicators using statistical pattern recognition (2019)
  • Author(s): Kenta Asahina, Tadashi Nemoto
  • Organizer: 29th International Meeting on Organic Geochemistry (IMOG) 2019, Gothenburg, Sweden (poster)
  • Int'l Joint Research
• [Presentation] Pelagic deep-sea records of the end-Permian mass extinction event (2019)
  • Author(s): Satoshi Takahashi, Kunio Kaiho, Satoshi Yamakita, Masahiro Oba, Shin-ichi Yamasaki, Noriyoshi Tsuchiya, Takeshi Kakegawa, Takeyoshi Yoshida, Noritoshi Suzuki,Masayuki Ehiro,Ryoichi Nakada,Yusuke Watanabe,Yoshio Takahashi, Yasumasa Ogawa, Kazuhiko Kimura
  • Organizer: Earth System transition How resilient is the biosphere?, Geological Society, London, 2019 January17the (oral)
• [Presentation] Conodont natural assemblages in the earliest Triassic deep sea black claystone: An evidence of water column anoxia? (2019)
  • Author(s): Satoshi Takahashi, Satoshi Yamakita, Noritoshi Suzuki
  • Organizer: Earth System transition How resilient is the biosphere?, Geological Society, London, 2019 January17the (poster)
• [Presentation] The end-Permian mass extinction event in the pelagic Panthalassa (2018)
  • Author(s): Satoshi Takahashi, Kunio Kaiho, Satoshi Yamakita, Masahiro Oba, Shin-ichi Yamasaki, Noriyoshi Tsuchiya, Takeshi Kakegawa, Takeyoshi Yoshida, Noritoshi Suzuki,Masayuki Ehiro,Ryoichi Nakada,Yusuke Watanabe,Yoshio Takahashi, Yasumasa Ogawa, Kazuhiko Kimura,
  • Organizer: 日本古生物学会2018年年会. 2018 東北大学 青葉山北キャンパス（宮城県仙台市） 2018/6/22
  • Invited
• [Presentation] Alkylated aromatic compounds generated by thermal degradation of abietic acid (2018)
  • Author(s): Kenta Asahina
  • Organizer: Goldschmidt BOSTON 2018, USA, 2018 (poster)
• [Presentation] 固体地球活動に起因する中期中新世の温暖化：オスミウム同位体と炭素循環モデルを用いた検証 (2018)
  • Author(s): 後藤孝介, Maria Luisa L. Tejada, Gregory Ravizza, 伊藤孝, 黒田潤一郎, 鈴木勝彦, 固体地球活動に起因する中期中新世の温暖化：オスミウム同位体と炭素循環モデルを用いた検証
  • Organizer: 日本地球惑星科学連合2018年大会, MIS10-04, 千葉, 2018年5月23日
• [Presentation] 下部白亜系上部アプチンから下部アルビンにかけての海洋オスミウム同位体比記録の復元 (2018)
  • Author(s): 松本廣直, 黒田潤一郎, Rodolfo Coccioni, 大河内直彦, Fabrizio Frontalini
  • Organizer: 日本地質学会第125年学術大会, 札幌, 2018年09月05日.
• [Presentation] 上部アプチアン階から下部アルビアン階における海洋のオスミウム同位体比の復元: Ocean Anoxic Event 1bと巨大火山活動との関係解明に向けて (2018)
  • Author(s): 松本廣直, 黒田潤一郎, Rodolfo Coccioni, 大河内直彦
  • Organizer: 日本地球惑星科学連合2018年大会, BCG10-P04, 千葉, 2018年05月21日
• [Presentation] 堆積物オスミウム同位体記録を用いた中新世～鮮新世地中海の海洋変動 (2018)
  • Author(s): 黒田潤一郎, Francisco J. Jimenez-Espejo, 野崎達生, 鈴木勝彦
  • Organizer: 日本地球惑星科学連合2013年大会, 千葉, 2013年5月24日.
• [Presentation] 両極分布を示す前期三畳紀コノドントWapitiodus (2018)
  • Author(s): 山北聡,竹村厚司,相田吉昭,堀利栄,高橋聡,Hamish Campbell, Bernhard Sporli
  • Organizer: B19 m, 日本古生物学会167回例会, 2018年2月4日（口頭発表）
• [Presentation] 前期三畳紀遠洋域黒色粘土岩から産したプラットフォーム型コノドント自然集合体 (2018)
  • Author(s): 高橋聡，山北聡，鈴木紀毅
  • Organizer: B20m，日本古生物学会167回例会, 2018年2月4日（口頭発表）
• [Presentation] 深海相ペルム紀-三畳紀境界層に記録された鉄・モリブデンの化学種記録 (2017)
  • Author(s): 高橋 聡, 中田 亮一, 渡辺 勇輔, 高橋 嘉夫
  • Organizer: BPT06-03, 日本地球惑星科学連合大会, 千葉，幕張メッセ，2017年5月21日（口頭発表）
• [Presentation] 南太平洋ロードハウライズの白亜紀-古第三紀境界層の層序再検討 (2017)
  • Author(s): 黒田潤一郎, 斎藤実篤, 臼井洋一, 萩野恭子, Hsiung Kan-His, 村山雅史, 安藤卓人, 大河内直彦
  • Organizer: 日本地球惑星科学連合2017年大会 (JpGU-AGU Joint Meeting 2017), 千葉, 2017年05月25日.
• [Presentation] Lithological and geochemical features of the Permian-Triassic boundary at the Gujo-Hachiman section in the Mino-Tanba belt, central Japan (2017)
  • Author(s): Moei Yano, Koichiro Fujinaga, Kazutaka Yasukawa, Tatsuo Nozaki, Junichiro Kuroda, Kiyoko Kuwahara and Yasuhiro Kato
  • Organizer: 日本地球惑星科学連合2017年大会 (JpGU-AGU Joint Meeting 2017), 千葉, 2017年05月24日.
• [Presentation] タイ中央部の石炭系硫酸塩岩体の形成史 (2017)
  • Author(s): 黒田潤一郎, 原英俊, 上野勝美, Charoentitirat Thasinee, 丸岡照幸, 宮崎隆, 宮東照, Lugli Stefano
  • Organizer: 日本地球惑星科学連合2017年大会 (JpGU-AGU Joint Meeting 2017), 千葉, 2017年05月23日
• [Presentation] Multi-element, compound-specific isotope analysis of chloropigments: Insights into the biogeochemical cycle of the microbial mat in the shallow hypersaline environment (2017)
  • Author(s): Yuta Isaji, Hodaka Kawahata, Junichiro Kuroda, Toshihiro Yoshimura, Nanako O. Ogawa, Daisuke Araoka, Akiko Makabe, Atsushi Suzuki, Takazo Shibuya, Francisco J. Jimenez-Espejo, Yoshinori Takano, Stefano Lugli, Andrea Santulli, Vinicio Manzi, Marco Roveri and Naohiko Ohkouchi
  • Organizer: 日本地球惑星科学連合2017年大会 (JpGU-AGU Joint Meeting 2017), 千葉, 2017年05月22日
• [Presentation] Redox history of deep water in the Japan Sea during late Pleistocene based on trace elements (2017)
  • Author(s): 高橋 聡, 多田 隆治, 関 有沙, 入野 智久
  • Organizer: MIS06-P08, 日本地球惑星科学連合大会, 千葉，幕張メッセ，2017年5月23日（ポスター発表）
• [Presentation] Sulfur isotope geochemistry of the Japan Sea sediments (IODP Exp. 346) 30 ~ 220 kyr ago: Implications for the evolution of Asian Monsoon climate system (2017)
  • Author(s): 押尾 秀，山口 耕生，高橋 聡, 多田 隆治, 奈良岡 浩, 池原 実, 山口 飛鳥
  • Organizer: MIS06-P09, 日本地球惑星科学連合大会, 千葉，幕張メッセ，2017年5月23日（ポスター発表）
• [Presentation] Phosphorus geochemistry of the central Japan Sea sediments (IODP Exp. 346) 30~220 kyr ago: Implications for the evolution of Asian Monsoon climate system (2017)
  • Author(s): 増田 沙恵佳，山口 耕生，高橋 聡，多田 隆治
  • Organizer: MIS06-P10,日本地球惑星科学連合大会, 千葉，幕張メッセ，2017年5月23日（ポスター発表）
• [Presentation] 深海堆積層岩から産するコノドント化石の化学組成の評価：古海洋環境復元ツールへの応用に向けて (2017)
  • Author(s): 松本 廣直, 高橋 聡, 飯塚 毅, 武藤 俊
  • Organizer: MIS20-04, 日本地球惑星科学連合大会, 千葉，幕張メッセ，2017年5月25日（口頭発表）
• [Presentation] 下部三畳系深海チャートギャップの完全な層序復元に向けて (2017)
  • Author(s): 武藤 俊，高橋 聡，山北 聡
  • Organizer: MIS20-05日本地球惑星科学連合大会, 千葉，幕張メッセ，2017年5月25日（口頭発表）
• [Presentation] ポルフィリン窒素同位体比から明らかにする地中海塩分危機時の窒素循環 (2017)
  • Author(s): 伊左治雄太、川幡穂高、高野淑識、小川奈々子、黒田潤一郎、吉村寿紘、Francisco J. Jimenez-Espejo, Stefono Lugli, Vinicio Manzi, Marco Roveri, 大河内直彦
  • Organizer: 第35回有機地球化学シンポジウム（2017年高知シンボジウム）, 高知, 2017年08月31日.
• [Presentation] MALDI-TOF/MSイメージング法による生物源有機分子マッピング:メッシニアン蒸発岩中の化石微生物の解明 (2017)
  • Author(s): 伊左治雄太, 高野淑識, 井尻暁, 黒田 潤一郎, 吉村寿紘, Francisco J. Jimenez-Espejo, Stefano Lugli, 稲垣 史生, Vinicio Manzi, Marco Roveri, 川幡 穂高, 大河内 直彦
  • Organizer: 2017年度 日本地球化学会 第64回年会, 東京, 2017年09月15日.
• [Presentation] 愛媛県秩父累帯層状チャート中の三畳系－ジュラ系境界 (2017)
  • Author(s): 堀利栄, 吉田夏子, 黒田潤一郎, 小川奈々子
  • Organizer: 日本地質学会第124年学術大会, 愛媛, 2017年09月16日.
• [Presentation] パンサラサ海に堆積したアローロックス島の前期三畳紀層状 チャート層における生物源シリカ相とそのフラックスの変遷 (2017)
  • Author(s): 相田吉昭，菊池那津子，草場研太，丸山 巧，山北 聡， 竹村厚司，堀 利栄, 高橋 聡，齋藤めぐみ，久保田好美， Bernhard Sporli，Hamish Campbell
  • Organizer: R17-O-1，日本地質学会第124年学術大会, 愛媛大, 2017年9月16日（口頭発表）
• [Presentation] 深海堆積岩中のコノドント化石の化学組成の評価 (2017)
  • Author(s): 松本廣直， 高橋 聡，飯塚 毅，武藤 俊
  • Organizer: R17-O-2，日本地質学会第124年学術大会, 愛媛大, 2017年9月16日（口頭発表）
• [Presentation] 南西太平洋ロードハウライズ掘削試料の白亜紀-古第三紀（旧成紀）境界層の層序 (2017)
  • Author(s): 黒田潤一郎, 斎藤 実篤,臼井洋一,萩野恭子, Hsiung Kan-His, 村山雅史, 安藤 卓人, 大河内直彦
  • Organizer: 日本地質学会第124年学術大会, 愛媛, 2017年09月18日.
• [Presentation] Late Neogene marine osmium isotopic records of the Mediterranean and Atlantic sediments (2017)
  • Author(s): Junichiro Kuroda, Francisco J. Jimenez-Espejo, Tatsuo Nozaki, Rocco Gennari, Stefano Lugli, Vinicio Manzi, Marco Roveri, Rachel Flecker, Francisco J. Sierro, Toshihiro Yoshimura, Katsuhiko Suzuki and Naohiko Ohkouchi
  • Organizer: European Geoscience Union General Assembly 2017, Wien, Austria, 26, April 2017
  • Int'l Joint Research
• [Presentation] Redox conditions across Permian-Triassic based on laminae preservation and pyrite framboids from the pelagic Panthalassic ocean (2017)
  • Author(s): Satoshi Takahashi, Akane Mizutani, Jun Ishida, Shinji Yamamoto, Shun Muto, Masayuki Ikeda, Kazumi Ozaki, Nozomi Suzuki, Ryuji Tada
  • Organizer: O13, the IGCP 630 annual meeting, Tohoku Univ., Sendai, Japan
  • Int'l Joint Research
• [Presentation] Enhanced biogenic silica sedimentation processes revealed in the Early Triassic, Induan bedded chert from Arrow Rocks, Panthalassa ocean (2017)
  • Author(s): Yoshiaki Aita, Natsuko Kikuchi, Satoshi Yamakita, Atsushi Takemura, Rie S. Hori, Satoshi Takahashi, Megumi Saito, Yoshimi Kubota, K. Bernhard Sporli, Hamish J. Campbell
  • Organizer: P4. the IGCP 630 annual meeting, Tohoku Univ., Sendai, Japan
  • Int'l Joint Research
• [Presentation] Oceanic oxidation and anoxia coincided with diversification and extinction of early animals after the Snowball Earth (2017)
  • Author(s): Kunio Kaiho, Atena Shizuya, Kenji Yamada, Masahiro Oba, Minori Kikuchi, Naoto Senba, Zhong-Qiang Chen, Tsuyoshi Komiya, Jinnan Tong, Li Tian, Paul Gorjan, Satoshi Takahashi
  • Organizer: P6. the IGCP 630 annual meeting, Tohoku Univ., Sendai, Japan
  • Int'l Joint Research
• [Presentation] Effects of soil erosion and anoxic euxinic ocean in the Permian-Triassic marine crisis (2017)
  • Author(s): Kunio Kaiho, Ryosuke Saito, Kosuke Ito, Takashi Miyaji, Raman Biswas, Li Tian, Hiroyoshi Sano, Zhiqiang Shi, Satoshi Takahashi, Jinnan Tong, Lei Liang, Masahiro Oba, Fumiko W. Nara, Noriyoshi Tsuchiya, Zhong-Qiang Chen
  • Organizer: P7. the IGCP 630 annual meeting, Tohoku Univ., Sendai, Japan, (poster)
  • Int'l Joint Research
• [Presentation] Tentative identification of diagenetic products of cyclic biphytanes in sedimentary rocks from the uppermost Permian and Lower Triassic (2017)
  • Author(s): Ryosuke Saito, Kunio Kaiho, Masahiro Oba, Jinnan Tong, Zhong-Qiang Chen, Li Tian, Satoshi Takahashi, Megumu Fujibayashi
  • Organizer: P8. the IGCP 630 annual meeting, Tohoku Univ., Sendai, Japan,(poster)
  • Int'l Joint Research
• [Presentation] Smithian/Spathian boundary detected slightly below OAE-related black sediments in oceanic sequences in Japan and New Zealand (2017)
  • Author(s): Satoshi Yamakita, Satoshi Takahashi, Kunio Kaiho, Megumu Fujibayashi, Satoru Kojima, Atsushi Takemura, Yoshiaki Aita, Rie S. Hori, K. Bernhard Sporli. Hamish J. Campbell
  • Organizer: P10. the IGCP 630 annual meeting, Tohoku Univ., Sendai, Japan, (poster)
  • Int'l Joint Research
• [Presentation] Conodont provincialism in the Early Triassic environmental extreme (2017)
  • Author(s): Satoshi Yamakita, Atsushi Takemura, Yoshiaki Aita, Rie S. Hori, Satoshi Takahashi, Jack A. Grant-Mackie, K. Bernhard Sporli and Hamish J. Campbell
  • Organizer: P11. the IGCP 630 annual meeting, Tohoku Univ., Sendai, Japan, (poster)
  • Int'l Joint Research
• [Presentation] The Permian-Triassic in Akkamori, Japan (2017)
  • Author(s): Satoshi Takahashi
  • Organizer: SP1. the IGCP 630 annual meeting, Tohoku Univ., Sendai, Japan, (poster)
  • Int'l Joint Research
• [Presentation] The Permian-Triassic in Utatsu, Japan (2017)
  • Author(s): Masahiro Ehiro, Kazuko Yoshizawa, Satoshi Takahashi, Kunio Kaiho, Noritoshi Suzuki
  • Organizer: SP2. the IGCP 630 annual meeting, Tohoku Univ., Sendai, Japan, (poster)
  • Int'l Joint Research
• [Presentation] The Permian-Triassic in Kuzuu, Japan: Part 1 (2017)
  • Author(s): Yoshiaki Aita, Shun Muto, Satoshi Takahashi, Ryuichi Arakawa
  • Organizer: SP3. the IGCP 630 annual meeting, Tohoku Univ., Sendai, Japan (poster)
  • Int'l Joint Research
• [Presentation] The Permian-Triassic in Kuzuu, Japan: Part 2. (2017)
  • Author(s): Yoshiaki Aita, Shun Muto, Satoshi Takahashi, Ryuichi Arakawa
  • Organizer: SP4, the IGCP 630 annual meeting, Tohoku Univ., Sendai, Japan (poster)
  • Int'l Joint Research
• [Presentation] The Permian-Triassic in Inuyama, Japan (2017)
  • Author(s): Satoshi Takahashi, Masayuki Ikeda, Satoshi Yamakita
  • Organizer: SP5, the IGCP 630 annual meeting, Tohoku Univ., Sendai, Japan (poster)
  • Int'l Joint Research
• [Presentation] Extreme inputs of clastic material to the pelagic Panthalassa during the Early Triassic (2017)
  • Author(s): Shun Muto, Satoshi Takahashi, Satoshi Yamakita, Masayuki Ikeda, Tetsuji Onoue
  • Organizer: O47, the IGCP 630 annual meeting, Tohoku Univ., Sendai, Japan (oral)
  • Int'l Joint Research
• [Presentation] A preliminary report on the fossil fish assemblage from the Osawa Formation (Spathian, Lower Triassic) of Northeastern Japan (2017)
  • Author(s): Yasuhisa Nakajima, Satoshi Takahashi, Osamu Sasaki, Masayuki Ehiro, Akihiro Misaki
  • Organizer: O50. the IGCP 630 annual meeting, Tohoku Univ., Sendai, Japan (oral)
  • Int'l Joint Research
• [Presentation] Redox conditions of late Early Triassic oceanic region around the South Kitakami Block (2017)
  • Author(s): Kazuko Yoshizawa, Satoshi Takahashi, Masayuki Ehiro, Takanobu Tsuihiji, Shun Muto, Takayuki Tashiro
  • Organizer: O52, the IGCP 630 annual meeting, Tohoku Univ., Sendai, Japan (oral)
  • Int'l Joint Research
• [Presentation] Organic geochemical evidence for coincidence of an amelioration of harsh environments with biotic recovery from the end-Permian mass extinction (2017)
  • Author(s): Ryosuke Saito, Kunio Kaiho, Masahiro Oba, Satoshi Takahashi, Zhong-Qiang Chen, Li Tian, Jing Chen, Jinnan Tong
  • Organizer: O53, the IGCP 630 annual meeting, Tohoku Univ., Sendai, Japan (oral)
  • Int'l Joint Research
• [Presentation] Methylated naphthalenes as molecular indicators to evaluate the source organic matter and source rock lithology of degraded oils (2017)
  • Author(s): Kenta Asahina, Noriyuki Suzuki
  • Organizer: The Society for Organic Petrology, Calgary, Canada.
  • Int'l Joint Research
• [Presentation] Three episodes of black claystone deposition in the pelagic Panthalassa during the Early Triassic (2017)
  • Author(s): Shun Muto, Satoshi Takahashi, Satoshi Yamakita
  • Organizer: O01-03, InterRad XV in Niigata 2017, Niigata Univ., Niigata, Japan, 23 Oct 2017. (oral)
  • Int'l Joint Research
• [Presentation] Biosiliceous facies and flux change of the Early Triassic bedded chert from Arrow Rocks, New Zealand (2017)
  • Author(s): Yoshiaki Aita, Natsuko Kikuchi, Kenta Kusaba, Takumi Maruyama, Satoshi Yamakita, Atsushi Takemura, Rie S. Hori, Satoshi Takahashi, Megumi Saito, Yoshimi Kubota, K. Bernhard Sporli, Hamish J. Campbell
  • Organizer: O08-03, InterRad XV in Niigata 2017, Niigata Univ., Niigata, Japan, 26 Oct 2017. (oral)
  • Int'l Joint Research
• [Presentation] Early Triassic conodont provincialism and its implication for the paleoceanography of Tethys and Panthalassa (2017)
  • Author(s): Satoshi Yamakita, Atsushi Takemura, Yoshiaki Aita, Rie S. Hori, Satoshi Takahashi, Jack A. Grant-Mackie, K. Bernhard Sporli, Hamish J. Campbell
  • Organizer: O10－04, InterRad XV in Niigata 2017, Niigata Univ., Niigata, Japan, 26 Oct 2017. (oral)
  • Int'l Joint Research
• [Presentation] Conodont biostratigraphy of Lower Triassic pelagic deep-sea sedimentary rocks in Japan (2017)
  • Author(s): Shun Muto, Satoshi Takahashi, Satoshi Yamakita
  • Organizer: P15-06, InterRad XV in Niigata 2017, Niigata Univ., Niigata, Japan, 23 Oct 2017. (poster)
  • Int'l Joint Research
• [Presentation] Possibility of bio-essential element depleted ocean at the end-Permian mass extinction (2017)
  • Author(s): Satoshi Takahashi, Shin-ichi Yamasaki, Noriyoshi Tsuchiya, Yasumasa Ogawa, Kazuhiko Kimura, Kunio Kaiho, Takeyoshi Yoshida
  • Organizer: P15-11, InterRad XV in Niigata 2017, Niigata Univ., Niigata, Japan, 23 Oct 2017. (poster)
  • Int'l Joint Research
• [Presentation] Natural assemblage of earliest Triassic conodont from deep sea black claystone (2017)
  • Author(s): Satoshi Takahashi, Satoshi Yamakita, Noritoshi Suzuki
  • Organizer: P15-12, InterRad XV in Niigata 2017, Niigata Univ., Niigata, Japan, 23 Oct 2017. (poster)
  • Int'l Joint Research