• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Experimental Studies on Chemical Structure of the Deep Mantle and Its formation Processes.

Research Project

Project/Area Number 01420013
Research Category

Grant-in-Aid for General Scientific Research (A)

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

Principal Investigator

ONUMA Kosuke  Prof. of Faculty of Science, Tohoku University, 理学部, 教授 (50000865)

Co-Investigator(Kenkyū-buntansha) HASENAKA Toshiaki  Instractor of Faculty of Science, Tohoku University, 理学部, 助手 (50202429)
FUJIMAKI Hirokazu  Associate Prof. of Faculty of Science, Tohoku Univ., 理学部, 助教授 (90133933)
AOKI Ken-ichiro  Prof. of Faculty of Science, Tohoku University, 理学部, 教授 (00004276)
KATO Takumi  Instractor of Faculty of Science, Tohoku University, 理学部, 助手 (90214379)
OHTANI Eiji  Associate Prof. of Faculty of Science, Tohoku University, 理学部, 助教授 (60136306)
Project Period (FY) 1989 – 1991
Project Status Completed (Fiscal Year 1991)
Budget Amount *help
¥27,400,000 (Direct Cost: ¥27,400,000)
Fiscal Year 1991: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 1990: ¥3,200,000 (Direct Cost: ¥3,200,000)
Fiscal Year 1989: ¥23,000,000 (Direct Cost: ¥23,000,000)
KeywordsMantle Minerals / Phase equilibria of silicate at high Pressure / Partioning of elements between mantle and core minerals / Phase transition at high pressure / Martian Interior / Density of Minerals / 珪酸塩メルトー鉱物の密度逆転 / 高圧下の相平衡 / マントル鉱物 / 珪酸塩熔融体の密度 / 元素分配 / 高圧実験 / マルチアンビル型高圧装置 / 超高圧実験 / 多重アンビル高圧発生装置 / 地球・惑星内部構造 / 高マグネシウム安山岩 / グラファイトーダイアモンド転移 / 鉄の相関係 / ラマン散乱 / マントル物質 / クロム / チタン / エクロジャイト
Research Abstract

Experimental studies on the earth matrials have been performed using the multi-anvil type high pressure apparatus with the following results during the term of project.
1. Phase relations among the mantle minerals above 8 GPa : Phase equilibrium diagrams have been determined for the system (1) forstbrite-anorthite-diopside, (2) diopside-enstatite, and (3) forsterite-pyrope. Pressure dependence of the composition of the liquid produced by partial melting and the melting behavior of the minerals present were elucidated.
2. Transitions and phase equilibria of the core materials : (1) Transitions of Fe were determined by the electric resistance method developed in our laboratory. (2) Phase equilibria of the system Fe-Fes were determined at 8 GPa.
3. Partitioning of elements between core and mantle materials : Partitioning of some elements between mantle minerals, silicate melts, and metal iron above 10 GPa was determined, and the relationships between abundance of these elements and core-mantle equilibrium odel were examined on the basis of the experimental data.
4. In-situ observation of MgSiO_3 transition by X-ray diffraction analysis : Transition of clinopyroxene structure - Mg_2SiO_4 spinel +stishovite - ilmenite structure were determined at 20 - 27 GPa.
5. Martian Interior model ; High pressure-high temperature experiments were carried out on a estimated martian mantle composition and a structure model of the martian interior were presented, based on the experimental results.
6. Density of peridotite melt at high pressures : Pressure dependence of forsterite and peridotite melt were examined with the result suggesting that density cross over between forsterite and Fe-rich peridotite melt is not probable.

Report

(4 results)
  • 1991 Annual Research Report   Final Research Report Summary
  • 1990 Annual Research Report
  • 1989 Annual Research Report
  • Research Products

    (25 results)

All Other

All Publications (25 results)

  • [Publications] Onuma,K.& S.Ichikawa: "Phase equlibria of the system diopside-acmite at low oxygen fugacity" Jour.Mineral.Petrol.Econ.Geol.86. 424-431 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Onuma,K.& H.Moridaira: "The system diopside-akermanite-pehlenite at l atm" Jour.Mineral.Petrol.Econ,Geol.86. 554-559 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Ohtani,E.,T.kato & E.Ito: "Transition metal partitioning between lo wer mantle and core materiala 27 GPa" Geophys.Res.Lett.18. 85-88 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Ohtani,E.,T.Kato,K.Onuma & E.Ito: "Partitioning of elements between mantle and core materials and early differentiation of the Earth" in High Press.Res.in Mineral Phys.,Application to Earth and Planetary Sci.(1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Kato,T.: "Double stage mult-anvil system with a sintered diamond anvil for X-ray diffraction experiment at high pressures and temperatures" in High Prees.Res. in Mineral Phys.,Application to Earth and Planetary Sci.(1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] kamaya,N.,E.Ohtani,T.Kato & K.Onuma: "High pressure phase transitions in a homogeneous model Martian mantle" Geophys. Monograph Ser.,Am.Geophys.Union Books. (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Onuma, K. and S. Ichikawa: "Phase equilibria of the system diopside-acmite at low oxygen fugacity" J. Mineral. Petrol. Econ. geol. 86. 424-431 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Onuma, K. and H. Moridaira: "The system diopside-akermanite-gehlenite at 1 atm." J. Mineral. Petrol. Econ. Geol. 86. 554-559 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Ohtani, E., T. Kato and E. Ito: "Transition metal partioning between lowere mantle and core material at 27 GPa" Geohpys. Res. Lett.18. 85-88 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Ohtani, E., T. Kato, K. Onuma and E. Ito: "Partitioning of elements between mantle and core materials and early differentiation of the Earth" High Press. Res. in Mineral Phys., Application to Earth and Planet. Sci.(1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Kato, T.: "Double stage multi-anvil system with a sintered diamond anvil for X-ray diffraction experiment, at high pressures and temperatures" High Press. Res. in Mineral Phys., Application to Earth and Planet. Sci.(1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Kamaya, N., E. Ohtani, T. Kato and K. Onuma: "High pressure phase transitions in a homogeneous model Martin mantle" Geophys. Monograph Ser.Am. Geophys. Union Books. (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Onuma,K.& Ichikawa,S.: "Phase equilibria of the system diopsideーakmite at low oxygen fugacity" Jour.Mineral.Petrol.Econ.Geol.86. 424-431 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Onuma,K & Moridaira,H.: "The system diopsideーakermaniteーgehlenite at atm" Jour.Mineral.Petrol.Econ.Geol.86. 554-559 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Ohtani,E.,Kato,T.& Ito,E.: "Transition metal partitioning between lower mantle and core material at 27 GPa" Geophys.Res.Lett.18. 85-88 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Ohtani,E.,Kato,T.,Onuma,K.& Ito,E.: "Partinning of elements between mantle and core materials and early differentiation of the Earth" in High Press.Res.in Mineral Phys.,Application to Earth and Planetary Sci.(1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] Kato,T.: "Double stage multiーanvil system with a sintered diamond anvil for Xーray diffraction experiment at high pressures and temperatures" in High Press.Res in Mineral Phys.,Application to Earth and Planetary Sci.(1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] Kamaya,N.,Ohtani,E.,Kato,T.& Onuma,K.: "High pressure phase transitions in a homogeneous model Martian mantle" Geophys.Monograph Ser.,Am.Geophys.Union BooKs. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] Kosuke Onuma Shunichi Ichikawa: "Phase equilibria of the system diopsideーacmite at low oxygen fugacity" Science Report of the Tohoku University. 17. (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] Noriko Kawaya Kosuke Onuma: "Melting experiment on Kurohanaーyama basalts of Funagata volcano,NE Honshu,Japan" Science Report of the Tohoku University. 17. (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] Eiji Ohtani Eiji Ito Takumi Kato: "Transition metal partitioning between lower mantle and core." Geophysical Research Letters. 18. (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] Eiji Ohtani: "Majorite fractionation and genesis of kowatiite in the deep mantle." Precaw brian Research. 48. 195-202 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] A.E.Ringwood Takumi Kato W.Hibberson: "High Pressure geochemistry of Cr,Vand Mn and implications for the origin of the moon." Nature. 12. 707-711 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] Eiji Ohtani Takumi Kato Kosuke Onuma: "Partitioning of elements between mantle and core materials and early differentiation of the earth." U.S.ーJapan seminar,HighーPressure Research in Mineral Physics. (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] 大谷栄治,加藤工,大沼晃助: "マントル・コア境界およぴコアの化学構造と起源" 地球. 2号. 22-27 (1989)

    • Related Report
      1989 Annual Research Report

URL: 

Published: 1989-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi