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2020 Fiscal Year Annual Research Report

配位環境分析に基づく続成作用が重元素安定同位体比に与える影響の解明

Research Project

Project/Area Number 19H02007
Research InstitutionJapan Agency for Marine-Earth Science and Technology

Principal Investigator

中田 亮一  国立研究開発法人海洋研究開発機構, 超先鋭研究開発部門(高知コア研究所), 副主任研究員 (50726958)

Co-Investigator(Kenkyū-buntansha) 高橋 聡  東京大学, 大学院理学系研究科(理学部), 助教 (60615251)
岡崎 啓史  国立研究開発法人海洋研究開発機構, 超先鋭研究開発部門(高知コア研究所), 研究員 (90784257)
Project Period (FY) 2019-04-01 – 2023-03-31
Keywords続成作用 / 重元素安定同位体 / 元素分離 / 堆積物コア / 熱水実験
Outline of Annual Research Achievements

本研究では続成作用が堆積物中の重元素安定同位体比に与える影響について熱水反応実験と堆積物コア試料の分析を組み合わせて解明することを目的とし、①安定同位体比分離法および分析条件の確立、②天然試料採取と同一層準決定、③熱水反応実験、④天然試料および実験試料の安定同位体比および配位環境分析という4つの研究ステップを4年間で行う計画をしている。
2020年度は①の元素分離法および分析条件の確立に加えて、②の国際深海科学掘削計画(IODP)第346航海で採取された新第三紀の日本海堆積物コアの分析を開始した。①について、Fe安定同位体比測定では、これまで行われていたCuを添加してピークジャンプ測定を行い、Cu同位体比からFe同位体比を補正する手法よりも、Niを添加してピークジャンプをせずにNi同位体比でFe同位体比を補正することで、分析精度の大幅な向上を実現した。②については、当初予定していた倍の試料を入手したことから、試料処理に要する時間が大幅に増えたことも影響し、同一層準決定までは達成できていない。しかし、蛍光X線分析による主成分元素濃度測定およびICP-MS分析による微量元素濃度測定は合計221試料で完了している。③については、引き続きブランク実験を行い基礎データの取得を行った。

Current Status of Research Progress
Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

当初予定よりも倍以上の試料を入手して分析していることに加え、新型コロナによる研究所閉鎖などの影響で同一層準決定までは実現していないが、より学術的価値のある高時間解像度での天然試料分析を遂行していることを考えれば、おおむね順調と言える。

Strategy for Future Research Activity

2021年度は、当初予定通り引き続き②天然試料採取と同一層準決定、③熱水反応実験と④天然試料と実験試料の安定同位体比および配位環境分析を推進する。

  • Research Products

    (30 results)

All 2021 2020 Other

All Journal Article (11 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 11 results,  Open Access: 2 results) Presentation (18 results) (of which Int'l Joint Research: 5 results,  Invited: 1 results) Remarks (1 results)

  • [Journal Article] Oceanic water redox conditions of the region between Tethys and Panthalassa during the late early Triassic2021

    • Author(s)
      Yoshizawa Kazuko、Takahashi Satoshi、Muto Shun、Ehiro Masayuki、Tsuihiji Takanobu
    • Journal Title

      Palaeogeography, Palaeoclimatology, Palaeoecology

      Volume: 567 Pages: -

    • DOI

      10.1016/j.palaeo.2020.110143

    • Peer Reviewed
  • [Journal Article] EXAFS Determination of Clay Minerals in Martian Meteorite Allan Hills 84001 and Its Implication for the Noachian Aqueous Environment2021

    • Author(s)
      Nakada Ryoichi、Tanabe Gaku、Kajitani Iori、Usui Tomohiro、Shidare Masashi、Yokoyama Tetsuya
    • Journal Title

      Minerals

      Volume: 11 Pages: 176~176

    • DOI

      10.3390/min11020176

    • Peer Reviewed / Open Access
  • [Journal Article] Rheology of the Fluid Oversaturated Fault Zones at the Brittle‐Plastic Transition2021

    • Author(s)
      Okazaki Keishi、Burdette Eric、Hirth Greg
    • Journal Title

      Journal of Geophysical Research: Solid Earth

      Volume: 126 Pages: e2020JB020804

    • DOI

      10.1029/2020JB020804

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The Role of Post‐Shock Heating by Plastic Deformation During Impact Devolatilization of Calcite (CaCO 3 )2021

    • Author(s)
      Kurosawa Kosuke、Genda Hidenori、Azuma Shintaro、Okazaki Keishi
    • Journal Title

      Geophysical Research Letters

      Volume: 48 Pages: e2020GL091130

    • DOI

      10.1029/2020GL091130

    • Peer Reviewed
  • [Journal Article] Vanadium micro-XANES determination of oxygen fugacity in olivine-hosted glass inclusion and groundmass glasses of martian primitive shergottite Yamato 9804592020

    • Author(s)
      Nakada Ryoichi、Usui Tomohiro、Ushioda Masashi、Takahashi Yoshio
    • Journal Title

      American Mineralogist

      Volume: 105 Pages: 1695~1703

    • DOI

      10.2138/am-2020-7321

    • Peer Reviewed
  • [Journal Article] In-situ preservation of nitrogen-bearing organics in Noachian Martian carbonates2020

    • Author(s)
      Koike Mizuho、Nakada Ryoichi、Kajitani Iori、Usui Tomohiro、Tamenori Yusuke、Sugahara Haruna、Kobayashi Atsuko
    • Journal Title

      Nature Communications

      Volume: 11 Pages: 1988

    • DOI

      10.1038/s41467-020-15931-4

    • Peer Reviewed / Open Access
  • [Journal Article] Interaction between Cerium and H2O in Hydrous Rhyolitic Melts2020

    • Author(s)
      Kondo Nozomi M.、Kono Yoshio、Ohara Koji、Nakada Ryoichi、Ina Toshiaki、Skrzypek Etienne、Yamada Akihiro、Saito Satoshi
    • Journal Title

      ACS Earth and Space Chemistry

      Volume: 4 Pages: 2281~2288

    • DOI

      10.1021/acsearthspacechem.0c00206

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Deformation of mafic schists from subducted oceanic crust at high pressure and temperature conditions2020

    • Author(s)
      Okazaki Keishi、Hirth Greg
    • Journal Title

      Tectonophysics

      Volume: 774 Pages: 228217~228217

    • DOI

      10.1016/j.tecto.2019.228217

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] On porosity determination for hard rock drilling using core samples collected by the Oman Drilling Project2020

    • Author(s)
      Nagase Kumpei、Katayama Ikuo、Hatakeyama Kohei、Akamatsu Yuya、Okazaki Keishi、Abe Natsue、Michibayashi Katsuyoshi、Yokoyama Tadashi、Oman Drilling Project Science Party
    • Journal Title

      The Journal of the Geological Society of Japan

      Volume: 126 Pages: 713~717

    • DOI

      10.5575/geosoc.2020.0043

    • Peer Reviewed
  • [Journal Article] Unravelling the paleoecology of flat clams: New insights from an Upper Triassic halobiid bivalve2020

    • Author(s)
      Del Piero Nicol、Rigaud Sylvain、Takahashi Satoshi、Poulton Simon W.、Martini Rossana
    • Journal Title

      Global and Planetary Change

      Volume: 190 Pages: 103195~103195

    • DOI

      10.1016/j.gloplacha.2020.103195

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Scarcity of chert in upper Lower Triassic Panthalassic deep-sea successions of Japan records elevated clastic inputs rather than depressed biogenic silica burial flux following the end-Permian extinction2020

    • Author(s)
      Muto Shun、Takahashi Satoshi、Yamakita Satoshi、Onoue Tetsuji
    • Journal Title

      Global and Planetary Change

      Volume: 195 Pages: 103330~103330

    • DOI

      10.1016/j.gloplacha.2020.103330

    • Peer Reviewed
  • [Presentation] 丹沢道志斑れい岩から分離された斜長石中での離溶磁鉄鉱存在量と鉄価数の評価2020

    • Author(s)
      田村裕二郎, 佐藤雅彦, 中田亮一, 加藤千恵, 山本伸次
    • Organizer
      JpGU-AGU Joint Meeting 2020
  • [Presentation] The effects of carbon concentration and silicate melt structure on the metal-silicate partitioning of carbon in a shallow magma ocean2020

    • Author(s)
      桑原秀治, 鈴村明政, 伊藤正一, 中田亮一, 入舩徹男
    • Organizer
      JpGU-AGU Joint Meeting 2020
  • [Presentation] In-situ detection of early Noachian nitrogen-bearing organics from Martian carbonates2020

    • Author(s)
      小池みずほ, 中田亮一, 梶谷伊織, 臼井寛裕, 為則雄祐, 菅原春菜, 小林厚子
    • Organizer
      JpGU-AGU Joint Meeting 2020
  • [Presentation] Reactive iron supply control dominant sulfur species in the limestones of Ediacaran Doushantuo and Dengying Formations2020

    • Author(s)
      松浦史宏, 中田亮一, 上野雄一郎, 澤木佑介, 斎藤誠史, 梶谷伊織, 臼井寛裕
    • Organizer
      JpGU-AGU Joint Meeting 2020
  • [Presentation] Constraints on the Source of the Martian Magnetic Anomalies Inferred From Relaxation Time of Remanent Magnetization2020

    • Author(s)
      佐藤雅彦, 山本裕二, 西岡孝, 小玉一人, 望月伸竜, 潮田雅司, 中田亮一, 綱川秀夫
    • Organizer
      JpGU-AGU Joint Meeting 2020
    • Invited
  • [Presentation] Sulfur species in carbonates of a 4.1-billion-year old Martian meteorite constraining conditions of water on ancient Mars2020

    • Author(s)
      梶谷伊織, 中田亮一, 小池みずほ, 田辺学, 臼井寛裕, 横山哲也, 福士圭介
    • Organizer
      JpGU-AGU Joint Meeting 2020
  • [Presentation] 火星隕石ALH 84001の炭酸塩中の硫黄化学種解析に基づく初期火星表層環境の推定2020

    • Author(s)
      梶谷伊織, 中田亮一, 小池みずほ, 田辺学, 臼井寛裕, 松浦史宏, 福士圭 介, 黒川宏之, 横山哲也
    • Organizer
      日本惑星科学会2020年秋季講演会
  • [Presentation] 火星隕石Yamato 980459の局所XANES分析に基づく火成玄武岩マグマの酸素分圧進化2020

    • Author(s)
      中田亮一, 臼井寛裕, 潮田雅司, 高橋嘉夫
    • Organizer
      日本地球化学会第67回オンライン年会
  • [Presentation] Determination on iron species in plagioclase crystals toward the understanding on the magnetite exsolution2020

    • Author(s)
      R. Nakada, M. Sato, M. Ushioda, Y. Tamura, and S. Yamamoto
    • Organizer
      European Geosciences Union General Assembly 2020
    • Int'l Joint Research
  • [Presentation] Iron limitation enhance organic matter sulfurization within the limestones of the Ediacaran Dengying Formation2020

    • Author(s)
      F. Matsu’ura, R. Nakada, Y. Ueno, Y. Sawaki, M. Saitoh, I. Kajitani, and T. Usui
    • Organizer
      Goldschmidt Conference 2020
    • Int'l Joint Research
  • [Presentation] In-Situ detection of nitrogen-bearing organics in Noachian Martian carbonates: Implication for nitrogen-cycle on early Mars2020

    • Author(s)
      M. Koike, R. Nakada, I. Kajitani, T. Usui, Y.Tamenori, H. Sugahara, and A. Kobayashi
    • Organizer
      Goldschmidt Conference 2020
    • Int'l Joint Research
  • [Presentation] 最前期三畳紀の深海黒色粘土岩から産したコノドント自然集合体化石2020

    • Author(s)
      高橋 聡、山北 聡、鈴木 紀毅
    • Organizer
      JpGU-AGU Joint Meeting 2020
  • [Presentation] 南部北上帯大沢層が記録する、前期三畳紀スパシアンの堆積環境2020

    • Author(s)
      吉澤 和子,高橋 聡,武藤 俊,永広 昌之,對比地 孝亘
    • Organizer
      第6回地球環境史学会年会
  • [Presentation] Quake-induced redox change in the interior of planets2020

    • Author(s)
      Hirose Takehiro, Ryoichi Nakada, Okazaki Keishi, Shibuya Takezo
    • Organizer
      American Geophysical Union Fall Meeting 2020
    • Int'l Joint Research
  • [Presentation] Effects of water fraction on strengths and microstructures of quartz aggregates at the brittle plastic transition2020

    • Author(s)
      Okazaki Keishi、Burdette Eric、Hirth Greg
    • Organizer
      American Geophysical Union Fall Meeting 2020
    • Int'l Joint Research
  • [Presentation] 剪断帯内の変形の幾何を考慮した脆性・塑性遷移域の断層構成則2020

    • Author(s)
      野田 博之, 岡崎 啓史
    • Organizer
      JpGU-AGU Joint Meeting 2020
  • [Presentation] Rheology of the fluid oversaturated simulated quartz shear zone at the brittle-ductile transition2020

    • Author(s)
      Okazaki Keishi、Burdette Eric、Hirth Greg
    • Organizer
      JpGU-AGU Joint Meeting 2020
  • [Presentation] 巨大地震発生域下限の温度・圧力・間隙水圧条件を再現できる新しい固体圧岩石変形試験機の開発2020

    • Author(s)
      岡崎 啓史, 武藤 潤, 濱田 洋平, 谷川 亘, 廣瀬 丈洋
    • Organizer
      JpGU-AGU Joint Meeting 2020
  • [Remarks] 研究代表者の個人HP

    • URL

      http://www.jamstec.go.jp/res/ress/nakadar/

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Published: 2021-12-27  

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