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生物殻におけるMg同位体の分別機構の解明と古海洋学の新規間接指標の開発

Research Project

Project/Area Number 10J03322
Research Category

Grant-in-Aid for JSPS Fellows

Allocation TypeSingle-year Grants
Section国内
Research Field Geochemistry/Astrochemistry
Research InstitutionThe University of Tokyo

Principal Investigator

吉村 寿紘  東京大学, 大気海洋研究所, 特別研究員(PD)

Project Period (FY) 2010 – 2012
Project Status Completed (Fiscal Year 2012)
Budget Amount *help
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 2012: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 2011: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 2010: ¥700,000 (Direct Cost: ¥700,000)
KeywordsMg同位体 / 古環境プロキシ / 生物源炭酸塩 / MC-ICP-MS / マグネシウム同位体比 / 国際深海掘削計画(IODP) / 深海サンゴ / 堆積物コア
Research Abstract

申請者はMg同位体比の質量分析手法の開発とその応用研究に取り組んだ.以下,(1)生物骨格,(2)堆積物,(3)高精度分析手法の開発の三つのテーマにおいて結果が得られたので報告する.
申請者は炭酸カルシウムと水試料からのMg単離手法を開発し,高知コア研究所のMC-ICP-MSを用いた同位体比測定によって生物殻のMg同位体比の測定を行った.この結果,深海サンゴの骨格において水温とMg同位体比の間に明瞭な相関が認められた.生物殻は生物の成長に伴って付加成長するため生息時の時系列の環境情報を記録しており,この新しい知見は深海サンゴの骨格を用いて,地球の気候条件などを知るためにもっとも重要なパラメータである過去の水温の記録を復元できる可能性を示すものである.当該研究分野の既存研究の総説を行った成果が吉村・谷水(2012)として地球化学誌に掲載された.
また,海洋におけるマグネシウムの物質循環を知る上で大型放射光施設SPring8にて地質試料のX線吸収微細構造の分析を行った.得られた成果は,Journal of Synchrotron Radiationに投稿中で,現在Minor Revisionである.また,間隙水の同位体比測定を行い,成果についてはGoldschmidt Confbrence 2012にて発表を行った.

Report

(3 results)
  • 2012 Annual Research Report
  • 2011 Annual Research Report
  • 2010 Annual Research Report
  • Research Products

    (20 results)

All 2012 2011 2010

All Journal Article (5 results) (of which Peer Reviewed: 5 results) Presentation (15 results)

  • [Journal Article] 炭酸カルシウムのCa, Mg安定同位体分別2012

    • Author(s)
      吉村寿紘, 谷水雅治
    • Journal Title

      地球化学

      Volume: 46 Pages: 35-51

    • NAID

      10031088560

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 炭酸カルシウムのCa,Mg安定同位体分別2012

    • Author(s)
      吉村寿紘, 谷水雅治
    • Journal Title

      地球化学

      Volume: 46 Pages: 35-51

    • NAID

      10031088560

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Me isotope fractionation in biogenic carbonates of deep-sea coral, benthic foraminifera, and hermatypic coral2011

    • Author(s)
      Yoshimura, T., Tanimizu, M., Inoue, M., Suzuki A., Iwasaki, N., Kawahata, H.
    • Journal Title

      Analytical and Bioanalytical Chemistry

      Volume: 401 Issue: 9 Pages: 2755-2769

    • DOI

      10.1007/s00216-011-5264-0

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Biological and water chemistry controls on Sr/Ca, Ba/Ca, Mg/Ca and δ^<18> O profiles in freshwater pearl mussel Hyriopsis sp2011

    • Author(s)
      Izumida, H., Yoshimura, T, Suzuki, A., Nakashima, R., Ishimura, T., Yasuhara, M., Inamura, A., Shikazono, N., Kawahata, H.
    • Journal Title

      Paleogeography Paleoclimatology Paleoecology

      Volume: 309 Pages: 298-308

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Volume 317 Expedition Reports : Canterbury Basin Sea Level2011

    • Author(s)
      Fulthorpe, C.S., Hoyanagi, K., Blum, P., the Expedition 317 Scientists (including Yoshimura T.)
    • Journal Title

      Proceedings of the Integrated Ocean Drilling Program

      Volume: 317

    • DOI

      10.2204/iodp.proc.317.101.2011

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Presentation] 古海洋環境の復元指標確立に向けたマグネシウム同位体分析法の高度化2012

    • Author(s)
      吉村寿紘・谷水雅治
    • Organizer
      日本質量分析学会2012年同位体比部会
    • Place of Presentation
      仙台市
    • Year and Date
      2012-12-23
    • Related Report
      2012 Annual Research Report
  • [Presentation] Organic matter input and thermal maturity of offshore Canterbury Basin sediments, New Zealand, as shown by programmed pyrolysis and biomarker analyses2012

    • Author(s)
      George, S. C., Teague, E., Lipp, J. S., Yoshimura, T., and Claypool, G. E.
    • Organizer
      8^<th> International Conference on Petroleum Geochemistry and Exploration in the Afro-Asian Region(AAAPG-2012)
    • Place of Presentation
      Hangzhou, China(招待講演)
    • Year and Date
      2012-11-02
    • Related Report
      2012 Annual Research Report
  • [Presentation] Biomarkers in offshore Canterbury Basin sediments, New Zealand: organic matter input and thermal maturity2012

    • Author(s)
      George, S. C., Teague, E., Lipp, J. S., Yoshimura, T., and Claypool, G. E.
    • Organizer
      34^<th> International Geological Congress
    • Place of Presentation
      Brisbane, Aistralia
    • Year and Date
      2012-08-05
    • Related Report
      2012 Annual Research Report
  • [Presentation] Sr isotopic composition of pore water of shelf cores from IODP Expedition 317: Canterbury Basin, New Zealand2012

    • Author(s)
      Yoshimura. T., Kawahata, H., Tanimizu, M., George, S. C., Lipp, J. S., Claypool, G. E.,
    • Organizer
      Goldschmidt 2012
    • Place of Presentation
      Montreal, Canada
    • Year and Date
      2012-06-26
    • Related Report
      2012 Annual Research Report
  • [Presentation] Mg isotope fractionation in hermatypic corals2012

    • Author(s)
      Yoshimura, T., Tanimizu, M., Suzuki, A., Mayuri, I., Koga, K., Sakai, K., Kawahata, H.
    • Organizer
      日本地球惑星科学連合2012年大会
    • Place of Presentation
      幕張市
    • Year and Date
      2012-05-25
    • Related Report
      2012 Annual Research Report
  • [Presentation] IODP317次航海ニュージーランド沖大陸棚堆積物における間隙水のマグネシウム同位体組成2011

    • Author(s)
      吉村寿紘・谷水雅治・川幡穂高
    • Organizer
      2011年度日本地球化学会第58回年会
    • Place of Presentation
      札幌
    • Related Report
      2011 Annual Research Report
  • [Presentation] IODP317次航海ニュージーランド沖大陸棚堆積物における間隙水のマグネシウム同位体組成2011

    • Author(s)
      吉村寿紘・谷水雅治・川幡穂高
    • Organizer
      日本地球惑星科学連合2011年大会
    • Place of Presentation
      幕張
    • Related Report
      2011 Annual Research Report
  • [Presentation] Temperature dependence of Me isotope fractionation in deep-sea coral : paleocean ographic_implications as a new proxy2011

    • Author(s)
      Yoshimura, T., Tanimizu, M., Inoue, M., Suzuki, A., Iwasaki, N., Kawahata, H.
    • Organizer
      日本地球惑星科学連合2011年大会
    • Place of Presentation
      幕張
    • Related Report
      2011 Annual Research Report
  • [Presentation] Evaluation of Porites coral δ^<26>Mg as a new low-latitude climate proxy : insight from culture experiments in temperature controlled tank2011

    • Author(s)
      Yoshimura, T., Kawahata, H., Suzuki, A., Inoue, M., Tanimizu, M., Koga, K., Sakai, K.
    • Organizer
      日本地球惑星科学連合2011年大会
    • Place of Presentation
      幕張
    • Related Report
      2011 Annual Research Report
  • [Presentation] Sr isotopic composition of pore-water of shelf and shelf-slope cores from IODP Expedition 317 : Canterbury Basin, New Zealand2011

    • Author(s)
      Yoshimura, T.
    • Organizer
      Canterbury IODP Expedition 317 Post Cruise Meeting
    • Place of Presentation
      Oamaru, New Zealand
    • Related Report
      2011 Annual Research Report
  • [Presentation] Temperature dependence of Mg isotope fractionation in deep-sea coral : paleocean ographic_implications as a new proxy2011

    • Author(s)
      Yoshimura, T., Tanimizu, M., Inoue, M., Suzuki, A., Iwasaki, N., Kawahata, H.
    • Organizer
      Goldschmidt 2011
    • Place of Presentation
      Prague, Czech Republic
    • Related Report
      2011 Annual Research Report
  • [Presentation] Temperature dependence of Mg isotope fractionation in deep-sea coral as a new proxy for water temperature.2011

    • Author(s)
      Yoshimura T., Tanimizu M., Inoue M., Suzuki A., Iwasaki N., Kawahata H.
    • Organizer
      European Winter Conference on Plasma Spectroscopy 2011
    • Place of Presentation
      Zaragoza, Spain
    • Related Report
      2010 Annual Research Report
  • [Presentation] IODP317次航海ニュージーランド沖大陸棚堆積物における間隙水のマグネシウム同位体組成2011

    • Author(s)
      吉村寿紘・谷水雅治・川幡穂高
    • Organizer
      2010年度古海洋シンポジウム
    • Place of Presentation
      千葉県柏市・東京大学大気海洋研究所
    • Related Report
      2010 Annual Research Report
  • [Presentation] 深海サンゴ骨格におけるMg同位体分別の温度依存生:新しい古水温指標2010

    • Author(s)
      吉村寿紘・谷水雅治・井上麻夕里・鈴木淳・岩崎望・川幡穂高
    • Organizer
      2010年度日本地球化学会第57回年会
    • Place of Presentation
      埼玉県熊谷市・立正大学
    • Related Report
      2010 Annual Research Report
  • [Presentation] Small metabolic carbon contribution to shell carbonates of cultured freshwater pearl mussel Hyriopsis sp.2010

    • Author(s)
      Yoshimura, T., Izumida, H., Suzuki, A., Ishimura, T., Nakashima, R., Kawahata, H
    • Organizer
      2nd International Screlochronology Conference
    • Place of Presentation
      Mainz, Germany
    • Related Report
      2010 Annual Research Report

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Published: 2010-12-03   Modified: 2024-03-26  

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