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2020 Fiscal Year Annual Research Report

ジルコンの多種同位体分析による地殻形成プロセスの解明

Research Project

Project/Area Number 17H02976
Research InstitutionNational Institute of Polar Research

Principal Investigator

外田 智千  国立極地研究所, 研究教育系, 教授 (60370095)

Co-Investigator(Kenkyū-buntansha) 堀江 憲路  国立極地研究所, 研究教育系, 助教 (00571093)
日高 洋  名古屋大学, 環境学研究科, 教授 (10208770)
木村 純一  国立研究開発法人海洋研究開発機構, 海域地震火山部門(火山・地球内部研究センター), 上席技術研究員(シニア) (30241730) [Withdrawn]
谷 健一郎  独立行政法人国立科学博物館, 地学研究部, 研究主幹 (70359206)
Project Period (FY) 2017-04-01 – 2021-03-31
Keywords地殻進化
Outline of Annual Research Achievements

昨年度に引き続いて研究遂行の基幹となる二次イオン質量分析装置の精度を上げるために必要な試験を実施し、多種同位体分析のための基礎解析と分析試料調整をおこなった。
その上で、太古代の南極ナピア岩体から採取された試料を用いてジルコンのU-Pb年代、微量元素存在度,リチウム同位体分析,酸素同位体分析をおこなった。特に、Harvey Nunatakの斜方輝石片麻岩中に見出されたリチウムに極端に富むジルコンについて、Nb-U-Y相関を得ることに成功し、大陸地殻縁辺地域のプレート沈み込み部において堆積物と海水の反応によって生じたメルトが起源であることを明らかにした。Fyfe Hilllsの珪長質片麻岩中のジルコンについて、希土類元素存在度を指標とした超高温変成作用の時期の検証をおこなうとともに、その際に生じたジルコン酸素同位体組成の均質化現象を明らかにした。
以上のように、U-Pb年代測定、希土類元素分析、微量元素存在度分析、高精度酸素-リチウム同位体分析手法を確立し、さらに得られたデータを検証し、希土類元素データや水酸基の定量情報による後からのイベントによる改変の影響評価、酸素同位体分析データによる年代値のフィルタリングなど、年代値とイベントを照合するための総合的な解析をおこなう一連の手法を確立した。
成果をとりまとめて、JpGU-AGU Joint Meeting 2020、International Goldschmidt Conference、地球化学会、極域科学シンポジウムで発表し、またその一部は国際学術論文として公表した。

Research Progress Status

令和2年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和2年度が最終年度であるため、記入しない。

  • Research Products

    (27 results)

All 2021 2020

All Journal Article (15 results) (of which Int'l Joint Research: 8 results,  Peer Reviewed: 15 results,  Open Access: 5 results) Presentation (12 results) (of which Int'l Joint Research: 7 results,  Invited: 1 results)

  • [Journal Article] Evolution of the Indochina block from its formation to amalgamation with Asia: Constraints from protoliths in the Kontum Massif, Vietnam2021

    • Author(s)
      Nakano Nobuhiko、Osanai Yasuhito、Owada Masaaki、Binh Pham、Hokada Tomokazu、Kaiden Hiroshi、Bui Vuong T.S.
    • Journal Title

      Gondwana Research

      Volume: 90 Pages: 47~62

    • DOI

      10.1016/j.gr.2020.11.002

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] New highly radioactive particles derived from Fukushima Daiichi Reactor Unit 1: Properties and environmental impacts2021

    • Author(s)
      Morooka Kazuya、Kurihara Eitaro、Takehara Masato、Takami Ryu、Fueda Kazuki、Horie Kenji、Takehara Mami、Yamasaki Shinya、Ohnuki Toshihiko、Grambow Bernd、Law Gareth T.W.、Ang Joyce W.L.、Bower William R.、Parker Julia、Ewing Rodney C.、Utsunomiya Satoshi
    • Journal Title

      Science of The Total Environment

      Volume: 773 Pages: 145639~145639

    • DOI

      10.1016/j.scitotenv.2021.145639

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Adocus Kohaku, A New Species of Aquatic Turtle (Testudines: Cryptodira: Adocidae) from the Late Cretaceous of Kuji, Iwate Prefecture, Northeast Japan, with Special References to the Geological Age of the Tamagawa Formation (Kuji Group)2021

    • Author(s)
      Hirayama R., Sonoda T., Uno H., Horie K., Tsutsumi Y., Sasaki K., Mitsuzuka S. and Takisawa T.
    • Journal Title

      International Journal of Paleobiology & Paleontology

      Volume: 4 Pages: 1-12

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Tectono-metamorphic evolution and significance of shear-zone lithologies in Akebono Rock, Lutzow-Holm Complex, East Antarctica2020

    • Author(s)
      Baba Sotaro、Hokada Tomokazu、Kamei Atsushi、Kitano Ippei、Motoyoshi Yoichi、Nantasin Prayath、Setiawan Nugroho Imam、Dashbaatar Davaa-Ochir
    • Journal Title

      Antarctic Science

      Volume: 33 Pages: 52~72

    • DOI

      10.1017/S0954102020000450

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Zoned quartz phenocrysts in supercooled melt inclusions in granulites from continental collision orogens2020

    • Author(s)
      Hiroi Yoshikuni、Hokada Tomokazu、Kayama Masahiro、Miyake Akira、Adachi Tatsuro、Prame Bernard、Perera Keerthi、Satish‐Kumar Madhusoodhan、Osanai Yasuhito、Motoyoshi Yoichi、Ellis David J.、Shiraishi Kazuyuki
    • Journal Title

      Island Arc

      Volume: 29 Pages: -

    • DOI

      10.1111/iar.12374

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Geological subdivision of the Lutzow-Holm Complex in East Antarctica: From the Neoarchean to the Neoproterozoic2020

    • Author(s)
      Dunkley Daniel J.、Hokada Tomokazu、Shiraishi Kazuyuki、Hiroi Yoshikuni、Nogi Yoshifumi、Motoyoshi Yoichi
    • Journal Title

      Polar Science

      Volume: 26 Pages: 100606~100606

    • DOI

      10.1016/j.polar.2020.100606

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Chemical separation and determination of the isotopic compositions of dysprosium, erbium and ytterbium in geochemical materials by thermal ionization mass spectrometry2020

    • Author(s)
      Mizutani Yuki、Hidaka Hiroshi、Yoneda Shigekazu
    • Journal Title

      GEOCHEMICAL JOURNAL

      Volume: 54 Pages: 381~391

    • DOI

      10.2343/geochemj.2.0609

    • Peer Reviewed / Open Access
  • [Journal Article] Diversity and origin of strontium and barium isotopic anomalies in CM chondrites2020

    • Author(s)
      Sakuma Keisuke、Hidaka Hiroshi、Yoneda Shigekazu
    • Journal Title

      GEOCHEMICAL JOURNAL

      Volume: 54 Pages: 393~410

    • DOI

      10.2343/geochemj.2.0610

    • Peer Reviewed / Open Access
  • [Journal Article] Estimation of Thermal and Epithermal Neutron Fluences at the Lunar Surface from Isotopic Compositions of Rare Earth Elements2020

    • Author(s)
      Hidaka Hiroshi、Mizutani Yuki、Yoneda Shigekazu
    • Journal Title

      The Astrophysical Journal

      Volume: 904 Pages: 183~183

    • DOI

      10.3847/1538-4357/abbffe

    • Peer Reviewed / Open Access
  • [Journal Article] A Review of In Situ Isotopic Studies of the Oklo and Bangomb Natural Fission Reactors Using Microbeam Analytical Techniques2020

    • Author(s)
      Hidaka Hiroshi
    • Journal Title

      Minerals

      Volume: 10 Pages: 1060~1060

    • DOI

      10.3390/min10121060

    • Peer Reviewed / Open Access
  • [Journal Article] Geochemical Characterization of Zircon in Fyfe Hills of the Napier Complex, East Antarctica2020

    • Author(s)
      Takehara Mami、Horie Kenji、Hokada Tomokazu
    • Journal Title

      Minerals

      Volume: 10 Pages: 943~943

    • DOI

      10.3390/min10110943

    • Peer Reviewed / Open Access
  • [Journal Article] Early Carboniferous HP metamorphism in the Hida Gaien Belt, Japan: Implications for the Palaeozoic tectonic history of proto‐Japan2020

    • Author(s)
      Yoshida Takumi、Taguchi Tomoki、Ueda Hayato、Horie Kenji、Satish‐Kumar M.
    • Journal Title

      Journal of Metamorphic Geology

      Volume: 39 Pages: 77~100

    • DOI

      10.1111/jmg.12564

    • Peer Reviewed
  • [Journal Article] Tectonic and sedimentary history of the neoproterozoic metavolcanic-volcaniclastic rocks of the El-Dabbah Group, Central Eastern Desert, Egypt2020

    • Author(s)
      Kiyokawa Shoichi、Suzuki Taishi、Horie Kenji、Takehara Mami、El-Dokouny Hanna A.、Dawoud Maher、Abuelhasan Mohamed M.
    • Journal Title

      Journal of African Earth Sciences

      Volume: 165 Pages: 103807~103807

    • DOI

      10.1016/j.jafrearsci.2020.103807

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Estimation of emplacement depth for the Miocene Kaikomagatake granitoid pluton: constraints on crustal denudation history of the Izu collision zone2020

    • Author(s)
      WATANABE Saki、SAITO Satoshi、TANI Kenichiro
    • Journal Title

      Journal of Mineralogical and Petrological Sciences

      Volume: 115 Pages: 276~285

    • DOI

      10.2465/jmps.191031

    • Peer Reviewed
  • [Journal Article] Neoproterozoic to Early Triassic tectono-stratigraphic evolution of Indochina and adjacent areas: A review with new data2020

    • Author(s)
      Tran Tri Van、Faure Michel、Nguyen Vuong Van、Bui Hoang Huy、Fyhn Michael Bryld Wessel、Nguyen Tuan Quang、Lepvrier Claude、Thomsen Tonny B.、Tani Kenichiro、Charusiri Punya
    • Journal Title

      Journal of Asian Earth Sciences

      Volume: 191 Pages: 104231~104231

    • DOI

      10.1016/j.jseaes.2020.104231

    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Subdivision of the Lutzow-Holm Complex in East Antarctica2020

    • Author(s)
      Hokada, T., Dunkley, D.J., Shiraishi, K., Hiroi, Y., Motoyoshi, Y.
    • Organizer
      JpGU-AGU Joint Meeting 2020
    • Int'l Joint Research
  • [Presentation] Geologic nature and evolution of Western Rayner Complex, with reference to Point Widdows charnockite and its localized hydration process2020

    • Author(s)
      Hokada, T., Baba, S., Kamei, A., Kitano, I., Motoyoshi, Y.
    • Organizer
      11th Symposium on Polar Science
    • Int'l Joint Research
  • [Presentation] Implications for the East Antarctica - Sri Lanka - southern India geologic connections from the newly proposed geological subdivision of the Lutzow-Holm Complex in East Antarctica2020

    • Author(s)
      Dunkley, D.J., Hokada, T., Shiraishi, K., Hiroi, Y., Nogi, Y., Motoyoshi, Y.
    • Organizer
      11th Symposium on Polar Science
    • Int'l Joint Research
  • [Presentation] 塩酸-有機溶媒混合溶液を溶離剤とするイオン交換クロマトグラフィーによる分化隕石からのNi分離法の確立2020

    • Author(s)
      齋藤天晴,日高洋,李承求
    • Organizer
      日本地球化学会2020年会
  • [Presentation] CMコンドライト中のBa同位体比測定に基づく消滅核種135Csの同位体存在度の見積もり2020

    • Author(s)
      佐久間圭佑,日高洋,米田成一
    • Organizer
      日本地球化学会2020年会
  • [Presentation] オクロ天然原子炉に関する最近の話題から2020

    • Author(s)
      日高洋
    • Organizer
      日本地球化学会2020年会
  • [Presentation] Determination of neutron energy spectra for lunar meteorites studied from REE isotopic compositions2020

    • Author(s)
      H. Hidaka, K. Nishiizumi, M. Caffe and S. Yoneda
    • Organizer
      Goldschmidt Conference 2020
    • Int'l Joint Research
  • [Presentation] Further characterization of OT4 Mesozoic reference zircon2020

    • Author(s)
      Horie K. and Takehara M.
    • Organizer
      Goldschmidt Conference 2020
    • Int'l Joint Research
  • [Presentation] Geochemistry of Li-enriched Zircon from the Napier Complex, East Antarctica2020

    • Author(s)
      Takehara M., Horie K. and the 58 Japanese Antarctic Research Expedition
    • Organizer
      Goldschmidt Conference 2020
    • Int'l Joint Research
  • [Presentation] 高感度高分解能イオンマイクロプローブを用いた年代学の展望2020

    • Author(s)
      堀江憲路, 竹原真美
    • Organizer
      2020年度日本地球化学会第67回オンライン年会
  • [Presentation] リチウムに富む ジルコンの地球化学:東南極ナピア岩体,ハーベイヌナタークの例2020

    • Author(s)
      竹原真美, 堀江憲路, 第58次南極観測隊地質調査チーム
    • Organizer
      2020年度日本地球化学会第67回オンライン年会
  • [Presentation] The last unknown pieces of the Proto-Philippine Sea Plate: Huatung Basin and Gagua Ridge2020

    • Author(s)
      K. Tani, O. Ishizuka, K. Okino, H. Ueda
    • Organizer
      日本地球惑星科学連合2020年大会
    • Int'l Joint Research / Invited

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Published: 2021-12-27  

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