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Asteroid collision history on the Moon based on silica high-pressure polymorph

Research Project

Project/Area Number 26800277
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Geochemistry/Cosmochemistry
Research InstitutionHiroshima University

Principal Investigator

Miyahara Masaaki  広島大学, 理学研究科, 准教授 (90400241)

Project Period (FY) 2014-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywords月 / 隕石 / 高圧相 / アポロ試料 / シリカ / 衝撃変成 / 放射年代 / インパクト / リングウッダイト
Outline of Final Research Achievements

Asteroid collision history on the Moon was investigated using lunar surface rock samples (lunar meteorite, Apollo and Runa return samples) based on high-pressure science, mineralogy and isotope chronology. Lunar meteorite, Apollo and Runa return samples include several kinds of a high-pressure mineral besides shock-induced melting texture. Considering the stable pressure field of high-pressure minerals, shock pressure and impact speed were estimated 3-23 GPa and several km/second, respectively. We also tried to determine the impact ages using radio-isotopes.

Report

(4 results)
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Research-status Report
  • 2014 Research-status Report
  • Research Products

    (13 results)

All 2016 2015

All Journal Article (2 results) (of which Peer Reviewed: 1 results,  Acknowledgement Compliant: 1 results) Presentation (11 results) (of which Int'l Joint Research: 4 results,  Invited: 4 results)

  • [Journal Article] シリカ高圧相から探る月の天体衝突史2016

    • Author(s)
      宮原正明
    • Journal Title

      ISOTOPE NEWS

      Volume: 742 Pages: 33-37

    • Related Report
      2015 Research-status Report
  • [Journal Article] Discovery of stishovite in Apollo 15299 sample2015

    • Author(s)
      Kaneko S., Miyahara M., Ohtani E., Arai T., Hirao N,, Sato K.
    • Journal Title

      American Mineralogist

      Volume: 100 Issue: 5-6 Pages: 1308-1311

    • DOI

      10.2138/am-2015-5290

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] 赤外吸収分光法により検出される月隕石の水2016

    • Author(s)
      鹿山雅裕,中嶋悟,富岡尚敬,大谷栄治,瀬戸雄介,長岡央,三宅亮,小澤信,関根利守,宮原正明,留岡和重
    • Organizer
      日本惑星科学会
    • Place of Presentation
      岡山
    • Year and Date
      2016-09-12
    • Related Report
      2016 Annual Research Report
  • [Presentation] 危難の海から回収されたルナ24号レゴリス試料のキャラクタリゼーション2016

    • Author(s)
      寺田健太郎, 橋口友実, 河井洋輔, 宮原正明
    • Organizer
      2016年日本地球科学連合大会
    • Place of Presentation
      幕張メッセ
    • Year and Date
      2016-05-22
    • Related Report
      2016 Annual Research Report
  • [Presentation] 月面における水の起源と水源地: 物質科学的見地からの検討2016

    • Author(s)
      鹿山雅裕, 富岡尚敬, 大谷栄治, 中嶋 悟, 瀬戸雄介, 長岡央, Fagan Timothy, Gotze Jens, 三宅 亮, 小澤信, 関根利守, 宮原正明, 松本恵, 庄田直起, 留岡和重
    • Organizer
      2016年日本地球科学連合大会
    • Place of Presentation
      幕張メッセ
    • Year and Date
      2016-05-22
    • Related Report
      2016 Annual Research Report
  • [Presentation] 月隕石に記録された水に富む月の上部マントル2016

    • Author(s)
      鹿山雅裕, 中嶋悟, 富岡尚敬, 瀬戸雄介,大谷栄治, Fagan Timothy, 長岡央, 小澤 信, 関根利守, 宮原正明, 三宅亮, 福田 惇一, 留岡和重, 市村隼, 松本恵, 鈴木 康太, Gotze Jens
    • Organizer
      2016年日本地球科学連合大会
    • Place of Presentation
      幕張メッセ
    • Year and Date
      2016-05-22
    • Related Report
      2016 Annual Research Report
  • [Presentation] 衝撃を受けた隕石からのコーザイト,スティショバイト及びザイファルタイトの発見2016

    • Author(s)
      宮原正明, 大谷栄治, 山口亮, 小澤信
    • Organizer
      隕石学会
    • Place of Presentation
      ベルリン・ドイツ
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 衝撃を受けた天然のシリカ高圧相,2016

    • Author(s)
      宮原正明, 大谷栄治
    • Organizer
      東北大学知のフォーラム
    • Place of Presentation
      仙台
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 高圧相から探る月起源隕石に記録された衝突史の解明2015

    • Author(s)
      宮原正明,大谷栄治,金子詳平.
    • Organizer
      第56回高圧討論会
    • Place of Presentation
      広島
    • Year and Date
      2015-11-10
    • Related Report
      2015 Research-status Report
  • [Presentation] High-pressure polymorphs of silica in shocked meteorites and their implications2015

    • Author(s)
      Miyahara M.
    • Organizer
      Japan Geoscience Union Meeting 2015
    • Place of Presentation
      幕張メッセ
    • Year and Date
      2015-05-24 – 2015-05-28
    • Related Report
      2014 Research-status Report
  • [Presentation] High-pressure polymorphs of silica in shocked meteorites and their implications.2015

    • Author(s)
      Miyahara M
    • Organizer
      Japan Geoscience Union meeting 2015
    • Place of Presentation
      幕張
    • Year and Date
      2015-05-24
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Presentation] Application of a FIB system to ultra-high-pressure Earth and planetary sciences2015

    • Author(s)
      Miyahara M., Ohtani E.
    • Organizer
      New Frontier in Studying Chemistry under Extreme Conditions: Applications of FIB Technology
    • Place of Presentation
      HPSTAR, 上海
    • Year and Date
      2015-05-21 – 2015-05-22
    • Related Report
      2014 Research-status Report
    • Invited
  • [Presentation] Application of a FIB system to ultra-high-pressure Earth and planetary sciences2015

    • Author(s)
      Miyahara M. and Ohtani E.
    • Organizer
      The 2015 “New Frontier in Studying Chemistry under Extreme Conditions: Applications of FIB (Focused ion beam) Technology” workshop
    • Place of Presentation
      Shanghai, China
    • Year and Date
      2015-05-21
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research / Invited

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Published: 2014-04-04   Modified: 2018-03-22  

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