Reconstruction of redox history of late Pleistocene Japan Sea using trace elements and Ce isotope

• Project/Area Number: 26610166
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Stratigraphy/Paleontology
• Research Institution: The University of Tokyo
• Principal Investigator: Tada Ryuji 東京大学, 大学院理学系研究科, 教授 (30143366)
• Co-Investigator(Kenkyū-buntansha): TAKAHASHI Satoshi 東京大学, 大学院理学系研究科, 助教 (60615251) ; NAKADA Ryoichi 国立研究開発法人海洋研究開発機構, 高知コア研究所, 研究員 (50726958)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000); Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2014: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
• Keywords: 日本海 / 溶存酸素環境 / 酸化還元鋭敏元素 / セリウム同位体比 / 深海堆積物 / 明暗互層 / 後期更新世 / セリウム / 同位体比 / セリウム同位体 / 酸化還元環境

Outline of Final Research Achievements

Redox condition of the Japan Sea has been varied between oxic and euxinic repeatedly that resulted in deposition of light and dark sediments. This study aimed to develop a new proxy, Ce-isotope, to subdivide the oxic bottom water condition using the late Quaternary sediment cores recovered from the Japan Sea. First, composition of redox sensitive trace elements was analyzed for the sediment cores to select the samples with oxic evidence. The selected samples were subject to Ce-isotope analysis. According to degree of bioturbation and trace element contents, light layers are identified as oxic. However, analytical result of Ce-anomaly suggests the condition was still reducing below the point of Ce-reduction. Consequently, samples deposited under more oxic conditions are required to detect Ce-isotope variations reflecting more oxic paleo redox conditions. Recently, we collected new sediment cores which were deposited under more oxic conditions and suitable for Ce-isotope analysis.

Research Products

• [Journal Article] Impact of the decarboxylation reaction on rare earth elements binding to organic matter: From humic substances to crude oil (2016)
  • Author(s): R. Nakada, A. Waseda, F. Okumura, and Y. Takahashi
  • Journal Title: Chemical Geology Volume: 420 Pages: 231-239
  • DOI: 10.1016/j.chemgeo.2015.11.021
  • Peer Reviewed / Open Access
• [Journal Article] Volcanism and deep-ocean acidification across the end-Triassic extinction event (2015)
  • Author(s): M. Ikeda, R. S. Hori, Y. Okada, and R. Nakada
  • Journal Title: Palaeogeography, Palaeoclimatology, Palaeoecology Volume: 440 Pages: 725-733
  • DOI: 10.1016/j.palaeo.2015.09.046
  • Peer Reviewed / Open Access
• [Journal Article] Redox conditions in the end-Early Triassic Panthalassa. (2015)
  • Author(s): Takahashi, S., Yamasaki, S. I., Ogawa, K., Kaiho, K. & Tsuchiya, N
  • Journal Title: Palaeogeography, Palaeoclimatology, Palaeoecology Volume: 432 Pages: 15-28
  • DOI: 10.1016/j.palaeo.2015.04.018
  • Peer Reviewed / Open Access
• [Journal Article] Transfer of rare earth elements (REE) from manganese oxides to phosphates during early diagenesis in pelagic sediments inferred from REE patterns, X-ray absorption spectroscopy, and chemical leaching method (2015)
  • Author(s): Y. Takahashi, Y. Hayasaka, K. Morita, T. Kashiwabara, R. Nakada, M. A. Marcus, K. Kato, K. Tanaka, and H. Shimizu
  • Journal Title: GEOCHEMICAL JOURNAL Volume: 49 Issue: 6 Pages: 653-674
  • DOI: 10.2343/geochemj.2.0393
  • NAID: 130005112460
  • ISSN: 0016-7002, 1880-5973
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] 統合国際深海掘削計画(IODP)―2003年から10年の成果―アジアモンスーンの進化と変動:IODP日本海・東シナ海掘削(Exp.346)を終えて (2014)
  • Author(s): 多田隆治
  • Journal Title: 月刊地球 Volume: 号外40号 Pages: 242-249
• [Journal Article] A geochemical constraint on the formation process of a manganese carbonate nodule in the siliceous mudstone of the Jurassic accretionary complex in the Mino Belt, Japan (2014)
  • Author(s): Nakada, R ; Shirai, T ; Takahashi, S ; Suzuki, N ; Ogawa, K ; Takahashi, Y
  • Journal Title: Journal of Asian Earth Sciences Volume: 96 Pages: 59-68
  • DOI: 10.1016/j.jseaes.2014.08.032
  • Peer Reviewed
• [Presentation] 吸着および沈殿時のセリウム安定同位体分別における溶存錯体種の影響. (2016)
  • Author(s): 中田亮一, 田中雅人, 谷水雅治 & 高橋嘉夫.
  • Organizer: 第14回 微生物－鉱物－水－大気相互作用研究会.
  • Place of Presentation: 東京大学本郷キャンパス(東京都文京区）
  • Year and Date: 2016-03-03
• [Presentation] Technical feature of ITRAX data (2nd generation) and important point for inter laboratory XRF scanner data comparison. (2016)
  • Author(s): Seki, A., Kurokawa, S., Tada, R., Murayama, M. & Matsuzaki, T.
  • Organizer: IODP Exp.346 2nd Post Cruise Meeting 2016
  • Place of Presentation: University of Melbourne (Australia)
  • Year and Date: 2016-01-24
  • Int'l Joint Research
• [Presentation] Estimation of eolian dust content and its temporal variability during the last 1Myr at U1425 based on high-resolution XRF scanning. (2016)
  • Author(s): Seki, A., Tada, R., kurokawa, S., Murayama, M. & Matsuzaki, T
  • Organizer: IODP Exp.346 2nd Post Cruise Meeting 2016
  • Place of Presentation: University of Melbourne (Australia)
  • Year and Date: 2016-01-23
  • Int'l Joint Research
• [Presentation] Cyclo-stratigraphy of the Miocene interval at U1430 based on XRF scanning, MST and FMS data. (2016)
  • Author(s): Kurokawa, S., Tada, R., Lofi, J., Ikeda, M., Irino, T., Itaki, T., Kamikuri, S., Seki, A., Murayama, M. & Matsuzaki, T
  • Organizer: IODP Exp.346 2nd Post Cruise Meeting 2016
  • Place of Presentation: University of Melbourne (Australia)
  • Year and Date: 2016-01-22
  • Int'l Joint Research
• [Presentation] XRFコアスキャナーを用いた日本海堆積物明暗互層への高解像度迅速元素分析. (2015)
  • Author(s): 関有沙, 多田隆治, 黒川駿介, 村山雅史, Murray, R. W., Zarikian, C. A. & Exp.346.Scientists.
  • Organizer: 2015年度地球環境史学会年会
  • Place of Presentation: 東京大学本郷キャンパス（東京都文京区）
  • Year and Date: 2015-11-22
• [Presentation] 日本海堆積物コアの物性およびXRFコアスキャナーを用いたPliocene-Miocene部分のサイクル層序確立にむけて (2015)
  • Author(s): 黒川駿介, 多田隆治, Lofi, J., 村山雅史, 関有沙, 入野智久, 板木拓也, Murray, R. W., Zarikian, C. A. & Exp.346.Scientists
  • Organizer: 2015年度地球環境史学会年会
  • Place of Presentation: 東京大学本郷キャンパス（東京都文京区）
  • Year and Date: 2015-11-22
• [Presentation] XRFコアスキャナー（ITRAX）を用いたU1425第四紀堆積物の元素分析 結果と解釈、今後の方向性. (2015)
  • Author(s): 関有沙, 多田隆治, 黒川駿介 & 村山雅史
  • Organizer: IODP Exp. 346 ワークショップ. 2015
  • Place of Presentation: 国立科学博物館 （茨城県つくば市）
  • Year and Date: 2015-10-13
• [Presentation] 吸着および沈殿時のセリウム安定同位体分別における溶存錯体種の影響 (2015)
  • Author(s): 中田亮一, 田中雅人, 谷水雅治 & 高橋嘉夫
  • Organizer: 2015年度地球化学会年会
  • Place of Presentation: 横浜国立大学(神奈川県横浜市）
  • Year and Date: 2015-09-17
• [Presentation] ペルム紀末大量絶滅期の還元環境における微量元素の挙動 (2015)
  • Author(s): 高橋聡, 山崎慎一, 小川泰正, 木村和彦, 吉田武義, 土屋範芳, 中田亮一, 海保邦夫 & 高橋嘉夫.
  • Organizer: 日本地球化学会. 2015
  • Place of Presentation: 横浜国立大学常盤台キャンパス(神奈川県横浜市）
  • Year and Date: 2015-09-17
  • Invited
• [Presentation] 色を用いた第四紀日本海堆積物の明暗層分類とそれに基づく氷期-間氷期サイクルの認定. (2015)
  • Author(s): 関有沙, 多田隆治, 入野智久, 烏田明典, Murray, R. W., Zarikian, C. A. & Exp.346.Scientists.
  • Organizer: 日本地質学会第122年学術大会
  • Place of Presentation: 信州大学長野（工学）キャンパス（長野県長野市）
  • Year and Date: 2015-09-12
• [Presentation] Dissolved species controlling isotope effect for cerium during adsorption and precipitation (2015)
  • Author(s): Nakada, R., Tanaka, M., Tanimizu, M. & Takahashi, Y
  • Organizer: The 25th Goldschmidt Conference. 2015
  • Place of Presentation: Prague (Czech)
  • Year and Date: 2015-08-17
  • Int'l Joint Research
• [Presentation] Ultra-high resolution inter-Hole and inter-Site correlation of dark and light layers in the Quaternary sediments of the Japan, Yamato, and Ullung basins drilled during IODP Expedition 346 (2015)
  • Author(s): Karasuda, A., Tada, R., Irino, T., Murra, R. W., Zarikan, C. A. & Exp.346 Scientists
  • Organizer: XIX INQUA 2015.
  • Place of Presentation: 名古屋国際会議場(愛知県名古屋市）
  • Year and Date: 2015-07-28
  • Int'l Joint Research
• [Presentation] IODP Exp.346 日本海第四紀半遠洋性堆積物の明暗層に基づくコア間、サイト間精密対比とその応用. (2015)
  • Author(s): 烏田明典, 多田隆治, 入野智久, Murray, R. W., Zarikan, C. A. & Exp.346.Scientists.
  • Organizer: 日本地球惑星科学連合2015年大会
  • Place of Presentation: 幕張メッセ(千葉県千葉市）
  • Year and Date: 2015-05-27
• [Presentation] Cerium stable isotope fractionation as a potential paleo-redox proxy (2015)
  • Author(s): Ryoichi Nakada, Yoshio Takahashi, Masaharu Tanimizu
  • Organizer: The 3rd ELSI International Symposium
  • Place of Presentation: 東京工業大学蔵前ホール(東京都）
  • Year and Date: 2015-01-13
• [Presentation] ペルム紀末の深海底で起きたモリブデンの還元 (2015)
  • Author(s): 高橋聡・中田亮一・高橋嘉夫
  • Organizer: 古海洋・古気候に関するシンポジウム
  • Place of Presentation: 東京大学大気海洋研究所(千葉県）
  • Year and Date: 2015-01-06
• [Presentation] 中期中新世女川層に見られるorbitalからsuborbitalスケールの堆積リズム (2015)
  • Author(s): 黒川駿介，多田隆治，高橋聡，板木拓也
  • Organizer: 古海洋・古気候に関するシンポジウム
  • Place of Presentation: 東京大学大気海洋研究所(千葉県）
  • Year and Date: 2015-01-06
• [Presentation] Orbital and suborbital-scale sedimentary rhythms in the Middle Miocene Onnagawa Formation, Northeastern Japan (2014)
  • Author(s): Shunsuke Kurokawa, Ryuji Tada, Satoshi Takahashi, Takuya Itaki, Yoshimi Kubota
  • Organizer: AGU Fall Meeting 2014
  • Place of Presentation: サンフランシスコ（アメリカ）
  • Year and Date: 2014-12-18
• [Presentation] 鉄マンガン沈殿物のセリウム安定同位体比：古酸化還元指標としての可能性 (2014)
  • Author(s): 中田亮一, 高橋嘉夫, 谷水雅治
  • Organizer: 2014年度質量分析学会 同位体比部会
  • Place of Presentation: 筑波山温泉旅館 彩香の宿 一望（茨城県）
  • Year and Date: 2014-11-26
• [Presentation] 東アジアモンスーンの変動とその時代変化 (2014)
  • Author(s): 多田隆治
  • Organizer: 日本第四紀学会
  • Place of Presentation: 東京大学柏キャンパス（千葉県）
  • Year and Date: 2014-09-05
• [Presentation] 古酸化還元指標としてのセリウム安定同位体分別 (2014)
  • Author(s): 中田亮一, 田中雅人, 谷水雅治, 高橋嘉夫
  • Organizer: 日本地球惑星科学連合2014年大会
  • Place of Presentation: パシフィコ横浜（神奈川県）
  • Year and Date: 2014-04-30
• [Presentation] Sedimentary rhythms in the Middle Miocene Onnagawa Formation in Northern Japan (2014)
  • Author(s): Shunsuke Kurokawa, Ryuji Tada, Satoshi Takahashi, Akane Mizutani, Yui Kuboki,
  • Organizer: Japan Geoscience Union Meeting 2014
  • Place of Presentation: パシフィコ横浜（神奈川県）
  • Year and Date: 2014-04-29
• [Remarks] 多田・高橋研究室ホームページ (Tada & Takahashi Lab. Website)