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1996 Fiscal Year Final Research Report Summary

Experimental study of elemental process of the earth's core formation-Noble gas geosientific approach-

Research Project

Project/Area Number 06403002
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field 地球化学
Research InstitutionOsaka University

Principal Investigator

MATSUDA Jun-ichi  Osaka University, Graduate School of Science, Professor, 大学院・理学研究科, 教授 (80107945)

Co-Investigator(Kenkyū-buntansha) HASHIZUME Ko  Osaka University, Graduate School of Science,, 大学院・理学研究科, 助手 (90252577)
Project Period (FY) 1994 – 1996
Keywordsnoble gas / partition / mass spectrometer / core / high pressure / metal / silicate
Research Abstract

We obtained the result that noble gases did not incorporated in metal at the experiment using graphite vessel in 1994, but noble gases were equally partitioned between metal and silicate when we used MgO vessel in 1995. We considered that considerable amounts of carbon dissolved in metal in the former experiment and gave effect on the partition of noble gases. The MgO vessel also made reaction with the sample, which we observed under SEM.We proceeded the experiment of partition mainly for nitrogen this year, and improved the device not to react the vessel with the sample. We used the lherzolite sample from Ichinomegata and iron with MgO vessel. We put Mo foil inside the MgO vessel and MgO under the iron sample to protect the reaction of the vessel with the sample. We artificially added carbon, and could finally control the carbon content in metal at our expected values. The carbon content in metal was 0.5 to wt.%, and nitrogen and noble gases were less partitioned into metal with increasing carbon content. Thus, we confirmed that the carbon gave effect on the partition of nitrogen and noble gases. We also examined the noble gases in iron meteorite, but consmogenic component was predominant.

  • Research Products

    (10 results)

All Other

All Publications (10 results)

  • [Publications] Matsuda. J.: "Noble gases in metal and shreibersite of the Acuna (IIIAB) iron meterite" Meteoritics. 31. 227-233 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Matsuda, J.: "Noble gas study of a Philippinite with an usually large bubble" Meteoritics. 31. 273-277 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Shibata, T.: "Noble gas solubility in binary CaO-SiO^2 system" J. Geophys. Res. Lett.23. 3139-3142 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 松田准一: "希ガス同位体による宇宙地球科学" Radioisotopes. 45. 556-571 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 橋爪 光: "窒素・炭素の親鉄性に関する実験的研究 -地球コア中の軽元素の定量をめざして-" 火山. (印刷中). (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Matsuda, J: "Noble gases in metal and shreibersite of the Acuna (IIIAB) iron meteorite" Meteoritics. 31. 227-233 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Matsuda, J: "Noble gas study of a Philippinite with an unusually large bubble" Meteoritics. 31. 273-277 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Shibata, T: "Noble gas solubility in binary CaO-SiO_2 system" J.Geophys.Res.Lett.23. 3139-3142 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Matsuda, J: "Earth and space science of noble gas isotopes (in Japanese)" Radioisotopes. 45. 556-571 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hashizume, K: "On siderophile behavior of nitrogen and carbon : Implications for their inventories in the Earth" Volcano. (in press).

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1999-03-09  

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