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Origin of diamonds derived from the Earth's lower mantle

Research Project

Project/Area Number 18340167
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Petrology/Mineralogy/Science of ore deposit
Research InstitutionHokkaido University

Principal Investigator

NAGAI Takaya  Hokkaido University, 大学院・理学研究院, 准教授 (20243131)

Co-Investigator(Kenkyū-buntansha) KAGI Hiroyuki  東京大学, 大学院・理学系研究科, 准教授 (70233666)
SATA Nagayoshi  海洋研究開発機構, 地球内部変動センター, 技術研究副主任 (60371720)
藤野 清志  北海道大学, 大学院・理学研究院, 教授 (40116968)
瀬戸 雄介  北海道大学, 大学院理学研究院, 博士研究員 (10399818)
Co-Investigator(Renkei-kenkyūsha) FUJINO Kiyoshi  愛媛大学, 地球深部ダイナミクスセンター, 教授 (40116968)
Project Period (FY) 2006 – 2008
Project Status Completed (Fiscal Year 2008)
Budget Amount *help
¥17,030,000 (Direct Cost: ¥14,900,000、Indirect Cost: ¥2,130,000)
Fiscal Year 2008: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2007: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2006: ¥7,800,000 (Direct Cost: ¥7,800,000)
Keywords下部マントル / ダイヤモンド / 超高圧高温実験 / 放射光回折実験 / 透過電子顕微鏡 / 炭酸塩鉱物 / 石英 / 炭素循環 / MgCO3 / SiO2 / Fe3C / Fe7C3 / 高温高圧実験 / 炭酸塩 / 高温高圧 / マグネサイト / 高圧 / 反応
Research Abstract

人類を魅了してやまないダイヤモンド。その中で近年多く認識されるようになった地下670km以深の下部マントルと呼ばれる領域を起源とするダイヤモンドは、炭酸塩鉱物が石英と一緒に地球深部の下部マントル中心部にまで沈み込んだときに生成された可能性があることを実験的に初めて明らかにした。このことは炭酸塩鉱物という地球表層に存在する鉱物が、地球深部に取り込まれる地質学的プロセスが存在し、さらに、生成したダイヤモンドが再び地球上にもたらされるというダイナミックな炭素循環が地球に存在することを意味する。

Report

(4 results)
  • 2008 Annual Research Report   Final Research Report ( PDF )
  • 2007 Annual Research Report
  • 2006 Annual Research Report
  • Research Products

    (34 results)

All 2008 2007 2006

All Journal Article (15 results) (of which Peer Reviewed: 14 results) Presentation (17 results) Book (2 results)

  • [Journal Article] Micro-pellet method for infrared absorption spectroscopy using a diamond anvil cell under a quasi-hydrostatic condition2008

    • Author(s)
      Kagi H., Ushijima D., Iizuka R., Nakano S., Nagai T.
    • Journal Title

      High Pressure Res 28

      Pages: 229-306

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Effect of FeAlO_3 incorporation into MgSiO_3 on the bulk modulus of perovskite2008

    • Author(s)
      Nishio-Hamane D., Seto Y., Fujino K., Nagai T.
    • Journal Title

      Physics of the Earth and Planetary Interiors 10.1016

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Fate of carbonates within oceanic plate subducted to the lower mantle and a possible mechanism of diamond formation2008

    • Author(s)
      Seto Y., Hamane D., Nagai T., Fujino K.
    • Journal Title

      Physics and Chemistry of Minerals doi : 10.1007

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] High pressure phase relation of MnSiO_3 up to 85 GPa : Existence of MnSiO_3 perovskite2008

    • Author(s)
      Fujino K., Suzuki K. Hamane D. Seto Y. Nagai T., Sata N.
    • Journal Title

      American Mineralogist 93

      Pages: 653-657

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Comparative Raman spectroscopic study on ilmenite-type MgSiO_3(akimotoite), MgGeO_3, and MgTiO_3(geikielite) at high Mineralogist, temperatures and high pressures2008

    • Author(s)
      Okada T., Narita T. Nagai T., Yamanaka T.
    • Journal Title

      American Mineralogist 93

      Pages: 9-47

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Micro-pellet method for infrared absorption spectroscopy using a diamond anvi 1 cell under a quasi-hydrostatic condition2008

    • Author(s)
      Kagi, et.al.
    • Journal Title

      High Pressure Research 28

      Pages: 229-306

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] High pressure phase relation of MnSiO_3 up to 85 GPa : Existence of MnSiO_3 perovskite2008

    • Author(s)
      Fujino, et.al.
    • Journal Title

      American Mineralogist 93

      Pages: 653-657

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Comparative Raman spectroscopic study on ilmenite-type MgSiO3(akimotoite), MgGeO_3, and MgTiO_3(geikielite) at high temperatures and high pressures2008

    • Author(s)
      Okada, et.al.
    • Journal Title

      American Mineralogist 93

      Pages: 39-47

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Fate of carbonates with oceanic plate subducted to the lower mantle and a possible mechanism of diamond formation.2008

    • Author(s)
      Seto Y., et. al.
    • Journal Title

      Physics and Chemistry of Minerals 35

      Pages: 223-229

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effect of FeAlO3 incorporation into MgSiO3 on the bulk modulus of perovskite2008

    • Author(s)
      Nishio-Hamane, et. al.
    • Journal Title

      Physics of the Earth and Planetary Interiors 166

      Pages: 219-225

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Ferric iron and aluminum partitioning between MgSiO_3- and CaSiO_3-perovskites under oxidizing condition2007

    • Author(s)
      Nishio-Hamane D., Seto Y., Nagai T., Fujino K.
    • Journal Title

      Journal of Mineralogical and Petrological Sciences 102

      Pages: 291-297

    • NAID

      10019908432

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Effect of the incorporation of FeAlO_3 into MgSiO_3 perovskite on the post-perovskite transition2007

    • Author(s)
      Nishio-Hamane D., Fujino K., Seto Y., Nagai T.
    • Journal Title

      Geophysical Research Letters 34

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Effect of the incorporation of FeAlO_3 and MgSiO_3 perovskite on the post-perovskite transition2007

    • Author(s)
      Nishio-Hamane, et. al.
    • Journal Title

      Geophysical Research Letters 34

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Decarbonation reaction of magnesite in subducting slabs2006

    • Author(s)
      Takafuji N., Fujino K., Nagai T., Seto Y., Hamane D.
    • Journal Title

      Physics and Chemistry of Minerals 33

      Pages: 651-654

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Decarbonation reaction of magnesite in subducting slabs2006

    • Author(s)
      Naoto Takafuji
    • Journal Title

      Physics and Chemistry of Minerals 33・10

      Pages: 651-654

    • Related Report
      2006 Annual Research Report
  • [Presentation] 固体CO_2V相の結晶構造について2008

    • Author(s)
      瀬戸雄介, 浜根大輔, 永井隆哉, 藤野清志
    • Organizer
      第49回高圧討論会
    • Place of Presentation
      姫路
    • Related Report
      2008 Final Research Report
  • [Presentation] 鉄・アルミを固溶したペロブスカイト相の圧縮挙動と鉄のスピン状態2008

    • Author(s)
      浜根大輔, 藤野清志, 瀬戸雄介, 佐多永吉, 永井隆哉, 新名亨, 入舩徹男, 石井啓文, 平岡望, Y.Q.Cai.
    • Organizer
      日本鉱物科学会2008年度年会
    • Place of Presentation
      秋田
    • Related Report
      2008 Final Research Report
  • [Presentation] Mg-ペロブスカイトにおける3価鉄のスピン転移2008

    • Author(s)
      藤野清志, 浜根大輔, 瀬戸雄介, 佐多永吉, 永井隆哉, 鈴木啓介, 石堂知基, 新名亨, 入舩徹男, 石井啓文, 平岡望, Y.Q.Cai.
    • Organizer
      日本鉱物科学会2008年度年会
    • Place of Presentation
      秋田
    • Related Report
      2008 Final Research Report
  • [Presentation] Fe_3Cの高温高圧下での酸化反応2008

    • Author(s)
      永井隆哉, 瀬戸雄介, 浜根大輔, 佐多永吉, 藤野清志
    • Organizer
      日本鉱物科学会2008年度年会
    • Place of Presentation
      秋田
    • Related Report
      2008 Final Research Report
  • [Presentation] CaTiO_3-NdAlO_3ペロブスカイトの透過電子顕微鏡による転移双晶の観察2008

    • Author(s)
      金村大志, 瀬戸雄介, 浜根大輔, 永井隆哉
    • Organizer
      日本鉱物科学会2008年度年会
    • Place of Presentation
      秋田
    • Related Report
      2008 Final Research Report
  • [Presentation] ポストペロブスカイト相転移へのFeAlO_3成分の影響2008

    • Author(s)
      浜根大輔, 藤野清志, 瀬戸雄介, 永井隆哉
    • Organizer
      日本鉱物科学会2007年度年会
    • Place of Presentation
      東京
    • Related Report
      2008 Final Research Report
  • [Presentation] Ca^<2+>Ti^<4+>O_<3->Y^<3+>Ga^<3+>O_3固相関係2008

    • Author(s)
      甕聡子, 永井隆哉, 瀬戸雄介
    • Organizer
      日本鉱物科学会2007年度年会
    • Place of Presentation
      東京
    • Related Report
      2008 Final Research Report
  • [Presentation] MnSiO_3の高圧相関係とペロブスカイト構造2008

    • Author(s)
      鈴木啓介, 藤野清志, 浜根大輔, 瀬戸雄介, 永井隆哉
    • Organizer
      日本鉱物科学会2007年度年会
    • Place of Presentation
      東京
    • Related Report
      2008 Final Research Report
  • [Presentation] Fe_3Cの高温高圧下での安定性について2008

    • Author(s)
      永井隆哉, 瀬戸雄介, 浜根大輔, 佐多栄吉, 藤野清志
    • Organizer
      日本鉱物科学会2007年度年会
    • Place of Presentation
      東京
    • Related Report
      2008 Final Research Report
  • [Presentation] MgSiO_3-FeAlO_3系の高圧相関係とペロブスカイト相の体積弾性率2007

    • Author(s)
      浜根大輔, 瀬戸雄介, 永井隆哉, 藤野清志
    • Organizer
      第48回高圧討論会
    • Place of Presentation
      倉吉
    • Related Report
      2008 Final Research Report
  • [Presentation] Fe_3Cの高温高圧下での安定性2006

    • Author(s)
      永井隆哉, 瀬戸雄介, 浜根大輔, 藤野清志, 佐多永吉
    • Organizer
      第47回高圧討論会
    • Place of Presentation
      熊本
    • Related Report
      2008 Final Research Report
  • [Presentation] 高圧高温下における炭酸塩-ケイ酸塩鉱物間の反応2006

    • Author(s)
      瀬戸雄介, 浜根大輔, 永井隆哉, 藤野清志, 佐多永吉
    • Organizer
      第47回高圧討論会
    • Place of Presentation
      熊本
    • Related Report
      2008 Final Research Report
  • [Presentation] MgSiO_3-perovskiteへの鉄とアルミの固溶2006

    • Author(s)
      浜根大輔, 藤野清志, 瀬戸雄介, 永井隆哉
    • Organizer
      第47回高圧討論会
    • Place of Presentation
      熊本
    • Related Report
      2008 Final Research Report
  • [Presentation] エジリン及びNaFeO_2相の高圧相関係2006

    • Author(s)
      岡田卓, 八木健彦, 山中高光, 瀬戸雄介, 浜根大輔, 永井隆哉, 藤野清志
    • Organizer
      第47回高圧討論会
    • Place of Presentation
      熊本
    • Related Report
      2008 Final Research Report
  • [Presentation] The fate of carbonate with subducted oceanic plate into the lower mantle2006

    • Author(s)
      Seto Y., Hamane D., Nagai T., Fujino K.
    • Organizer
      19th General Meeting of International Mineralogical Association
    • Place of Presentation
      Kobe, Japan
    • Related Report
      2008 Final Research Report
  • [Presentation] Fe^<3+> and Al solubilities in silicate perovskites at the lower mantle condition2006

    • Author(s)
      Hamane D., Seto Y., Fujino K., Nagai T
    • Organizer
      19th General Meeting of International Mineralogical Association
    • Place of Presentation
      Kobe, Japan
    • Related Report
      2008 Final Research Report
  • [Presentation] Hydrogen bonding of goethite(alpha-FeOOD)at high pressure2006

    • Author(s)
      Nagai T., Kagi H., Parise J.B.
    • Organizer
      19th General Meeting of International Mineralogical Association
    • Place of Presentation
      Kobe, Japan
    • Related Report
      2008 Final Research Report
  • [Book] 第一章地球内部の構造と進化地球の変動と生物進化新・自然史科学II(沢田健、綿貫豊、西弘嗣、栃内新、馬渡駿輔編著)2008

    • Author(s)
      藤野清志、永井隆哉
    • Publisher
      北海道大学出版会
    • Related Report
      2008 Final Research Report
  • [Book] 地球の変動と生物進化 新・自然史科学II2008

    • Author(s)
      編者 沢田健ら
    • Publisher
      北海道大学出版
    • Related Report
      2007 Annual Research Report

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Published: 2006-04-01   Modified: 2016-04-21  

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