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2008 Fiscal Year Final Research Report

Evolutional history of planetary materials at the early sage of solarsystem based on I-Xe age determination

Research Project

  • PDF
Project/Area Number 19540512
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Geochemistry/Astrochemistry
Research InstitutionThe University of Tokyo

Principal Investigator

NAGAO Keisuke  The University of Tokyo, 大学院・理学系研究科, 教授 (40131619)

Project Period (FY) 2007 – 2008
Keywords隕石 / 希ガス同位体 / 質量分析 / 中性子照射 / I-Xe年代 / 水質変質 / ハロゲン
Research Abstract

我々が立ち上げた国内唯一のI-Xe 年代測定装置を用いて、太陽系初期の惑星形成史を解明するため、非平衡コンドライトや太陽風を含む角礫岩質コンドライトの年代を調べた。この結果、多くのコンドライトが炭素質コンドライトより2000-5000 万年後にリセットされたことを示しており、この間に母天体で水質変質などの変成作用が継続したことが分かって来た。また、中性子照射されたこれら試料に含まれる微量ハロゲンの定量も可能になってきた。

  • Research Products

    (7 results)

All 2009 2008 2007

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (6 results)

  • [Journal Article] Noblegases of the Yamato 000027 and Yamato000097 lherzolitic shergottites from Mars2008

    • Author(s)
      Nagao K, Park J. and Choi H.G
    • Journal Title

      Polar Science 2

      Pages: 195-214

    • Peer Reviewed
  • [Presentation] 希ガス質量分析を用いた極微量ハロゲンの検出2009

    • Author(s)
      角野浩史、馬上謙一、長尾敬介
    • Organizer
      第57回質量分析総合討論会
    • Place of Presentation
      大阪市(大阪国際交流センター)
    • Year and Date
      2009-05-15
  • [Presentation] Noble gas distributions in the Yamato000593 nakhlite deciphered by laser ablationanalysis and mineral separation2009

    • Author(s)
      Nagao K, Park J, Okazaki R., Imae N. and Kojima H
    • Organizer
      40th Lunar and Planetary Science Conference
    • Place of Presentation
      Houston, USA
    • Year and Date
      2009-03-24
  • [Presentation] Noble gases andcosmic-ray exposure ages of two Martianshergottites, RBT 04262 and LAR 063192008

    • Author(s)
      Nagao K. and Park J
    • Organizer
      71st Meeting of the Meteoritical Society
    • Place of Presentation
      Matsue, Japan
    • Year and Date
      2008-07-31
  • [Presentation] Exposure histories of micrometeorites found in a434 kyr old layer in the Dome Fuji ice core, Antarctica2008

    • Author(s)
      Nishiizumi K., Caffee M.W., Kohno M., Misawa K., Nagao K. and Tomiyama T
    • Organizer
      39th Lunar and Planetary ScienceConference
    • Place of Presentation
      Houston, USA
    • Year and Date
      2008-03-14
  • [Presentation] Noble gases in bulk and mineral separates from the MIL 03346nakhlite2008

    • Author(s)
      Nagao K. and Park J.
    • Organizer
      39th Lunar and Planetary Science Conference
    • Place of Presentation
      Houston, USA
    • Year and Date
      2008-03-11
  • [Presentation] Noble gasesof the Yamato 000027 and Yamato 000097lherzolitic shergottites2007

    • Author(s)
      Nagao K, Park J. and Choi H
    • Organizer
      31st Symposium onAntarctic Meteorites
    • Place of Presentation
      NIPR, Tokyo, Japan
    • Year and Date
      2007-06-06

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Published: 2010-06-10   Modified: 2016-04-21  

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