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Study of the dynamics and the multisphere interaction of the Early earth

Research Project

Project/Area Number 02302033
Research Category

Grant-in-Aid for Co-operative Research (A)

Allocation TypeSingle-year Grants
Research Field 鉱物学(含岩石・鉱床学)
Research InstitutionTOHOKU UNIVERSITY

Principal Investigator

OHTANI Eiji  TOHOKU UNIVERSITY,Faculty of Science,Associate Professor, 理学部, 助教授 (60136306)

Co-Investigator(Kenkyū-buntansha) NARUYAMA Shigenori  Prof.,Tokyo Inst.Technology, 理学部, 教授 (50111737)
ABE Yutaka  Assoc.Prof.,University of Tokyo, 理学部, 助教授 (90192468)
ARIMA Makoto  Assoc. Prof.,Yokohama National University, 教育学部, 助教授 (10184293)
AKAOGI Masaki  Prof.,Gakushuin University, 理学部, 教授 (30126560)
KATO Takumi  Assistant Prof.,Tohoku University, 理学部, 助手 (90214379)
北村 雅夫  京都大学, 理学部, 助教授 (70004489)
瀬野 徹三  東京大学, 地震研究所, 助教授 (10216567)
Project Period (FY) 1990 – 1992
Project Status Completed (Fiscal Year 1992)
Budget Amount *help
¥7,400,000 (Direct Cost: ¥7,400,000)
Fiscal Year 1992: ¥1,400,000 (Direct Cost: ¥1,400,000)
Fiscal Year 1991: ¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1990: ¥4,000,000 (Direct Cost: ¥4,000,000)
KeywordsMagma ocean / Plate tectonics / Kimberlite / Komatiite / Density of magma / Accretion / Archean / High pressure / コマチアイト / 地球核物質 / Mg‐ペロブスカイト / マグマオ-シャン / 遷移金属元素 / 分配 / 初期地球 / 多圏相互作用 / 中央海嶺玄武岩 / 付加体 / リソスフェア / シミュレ-ション
Research Abstract

Following topics were studied during this Co-operative research (A) project. Numerical simulation was conducted to clarify the process of formation of the terrestrial magma ocean during the accretion and formation of the primitive crust in the magma ocean stage. The high pressure experiments showed that a density crossover between olivine and the FeO rich peridotite magma of the Martian mantle composition occurs at around 7 GPa, which corresponds to the depth of about 600 km of the Martian interior. The similar density crossover is expected to occur at about 12 GPa which corresponds to the depth of 350 km in the terrestrial mantle. Petrogenesis of magmas observed in the early stage of the terrestial evolution, such as komatiite and kimberlite was also studied by using the multianvil high pressure apparatus. Tectonics of the early stage of the earth was also studied on the basis of the field work on geology of the Archean terrains, and showed that the tectonic style of the early Archean to 3.9 Ga ago was essentially similar to the modern plate tectonics. The high pressure research was conducted to study the phase transformation of the descending slab and the thermodynamic properties of the lower mantle minerals were also studied to discuss the secular change of the chemistry of the deep mantle. The symposium of this co-operative reserch was held during the 1993 joint meeting of the societies of the Earth and Planetary Sciences.

Report

(4 results)
  • 1992 Annual Research Report   Final Research Report Summary
  • 1991 Annual Research Report
  • 1990 Annual Research Report
  • Research Products

    (29 results)

All Other

All Publications (29 results)

  • [Publications] Akaogi M and Yamazaki T: "Bridgeman anul with a sintered diamond core for phase transtormation studies at high pressures and high tenperatures" Proceedings of Japan Academy. 67B. 61-65 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Abe,Y.: "Themal and chemical evolution of the terrestrial magma ocean" P.roceediys of 24th ISAS Lunar Planet.Sympo. 204-210 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Irifune,T.,Fujino,K.,Ohtani.E.: "A new high Pressure forn of MgAl_2O_4" Nature. 349. 409-411 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Yurimoto,H.,Ohtani,E.: "Element partifioning between majorite and liquid:A secondary ion mass sprctromotric study" Geophysical Research Lotters. 19. 17-20 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Ohtani E,q Kamaya,N.: "The geochemicol model of Mars:an estimation from the high pressure experiments." Geophysical Research Letters. 19. 2239-2242 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Ohtane,E.,Suzuki,A.,q Kato,T.: "Flotation of olivine in the peridotite molt at high pressure" Proceehings of the Japan Acadeny. 69B. 23-28 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Akaogi, M. and Yamazaki, T.: "Bridgeman anvil with a sintered diamond core for phase transformation studies at high pressures and high temperatures." Proc. Japan Acad.67 B. 61-65 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Abe, Y.: "Thermal and chemical evolution of the terrestrial magma ocean." Proc. 24th ISAS Lunar Planet Symp. 204-210 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Irifune, Y., Fujino, K., and Ohtani, E.: "A new high-pressure form of MGAL_2O_4." Nature. 349. 409-411 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Yurimoto, H. and Ohtani, E.: "Element partitioning between majorite and liquid: A secondary ion mass spectrometric study." Geophys. Res. Lett.19. 17-20 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Uhtani, E. and Kamaya, N.: "The geochemical model of Mars: an estimation from the high pressure experiments." Geophys. Res. Lett.19. 2239-2242 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Ohtani, E., Suzuki, A., Kato, T.: "Flotation of olivine in the peridotite melt at high pressure." Proc. Japan Acad.,Ser. B. 69. 23-28 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 阿部 豊: "地球の誕生と初期進化" 科学. 62. 100-107 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] 阿部 豊: "Protocrust of the Earth just after the end of accretion" 25回ISAS月惑星シンポジウムプロルーディングス. (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] 大谷 栄治・鎌谷 紀子: "The geuchemical model of Mars:an estimation from the high prossure experiments" ジオフィジカル・リサーチ・レターズ. 19. 2239-2242 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] 圦本 尚義・大谷 栄治: "メジャーライトと液の間の元素分配:二次イオン質量分析計による研究" ジオフィジカル・リサーチ・レターズ. 19. 17-20 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] 大谷 栄治/鈴木 昭夫・加藤 工: "Flotation of olivine in the peridotite meet at high pressure" 学士院紀要. 69B. 23-28 (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] 高橋 栄一: "地球創世期のマグマの海を再現する" 科学. 63. 32-44 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] 大谷 栄治: "初期地球のサブダクションとマントルダイナミックス" 月刊地球. 13. 613-617 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 大谷 栄治: "地球の分化過程と内部構造" 鉱物学雑誌. 20. 209-216 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] E.Ohtani: "Partitioning at elements between mantle and core materials and early ditterentiation at the Earth" High pressure Research in Mineral Physics, Application to Earth and Planet.Seiances. AGU monograph. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] 北村 雅夫: "初期地球におけるダイヤモンドの形成過程" 月刊地球. 13. 582-587 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] H.Yurimoto: "Element partitioning between majorite and liquid: A Secondary ion mass spectrometric study" Geophysical Research Letters. 19. 17-20 (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] E.Ohtani: "Majonte fractionation and genesis of komatiites in the deep mantle" Prcambrian Research. 48. 195-202 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] E.Ohtani: "Transition metal partitianing between lower mantle and core materials at 27 GPa" Geophysical Research Letters. 18. 85-88 (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] E.Ohtani: "Stability of Majorite(Mg,Fe)SiO_3 at high pressures and 1800℃" Earth and Planetary Science Letters. (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] E.Ohtani: "Ultrahigh pressure melting and chemical heterogeneity in the deep mantle" In:Dynamic Processes of material transport and transformation in the Earth's interior,(ed.F.Marumo). (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] T.Irifune: "A new highーpressure form of MgAl_2O_4" Nature. 349. 409-411 (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] 氏家 治: "姫島火山岩のストロンチウム同位体組成ーマグマの混合および非平衡なホルンブレンド斑晶ー" 岩石鉱物鉱床学会誌. 86. 65-71 (1991)

    • Related Report
      1990 Annual Research Report

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Published: 1990-04-01   Modified: 2016-04-21  

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