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study on the environmental and material evolution in the early system solar based on the chemical of composition of meteorites

Research Project

Project/Area Number 11440167
Research Category

Grant-in-Aid for Scientific Research (B)

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

Principal Investigator

EBIHARA Mitsuru  Tokyo Metropolitan Univ., Graduate School of Science, Professor, 理学研究科, 教授 (10152000)

Co-Investigator(Kenkyū-buntansha) OURA Yasuji  Tokyo Metropolitan Univ., Graduate School of Science, Assistant, 理学研究科, 助手 (90291567)
Project Period (FY) 1999 – 2001
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥15,100,000 (Direct Cost: ¥15,100,000)
Fiscal Year 2001: ¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 2000: ¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1999: ¥11,100,000 (Direct Cost: ¥11,100,000)
Keywordsvolatile elements / halogens / meteorite parent body / chondrules / refractory siderophile dements / platinum group elements / rare earth elements / martian meteorites / コンドライト質隕石 / 初期太陽系 / 水銀 / 神戸隕石 / 南極隕石 / CKコンドライト / 塩素 / 隕石 / 凝縮 / リン / 放射化分析
Research Abstract

This year is the last year of the project. In this year, we have conducted the following research subjects ; (i) establishment of the analytical technique for four halogens in solid silicate materials and its application to meteorite samples, (ii) distribution of refractory siderophile elements in meteorites and its cosmochemical implications, (iii) distribution of rare earth elements (REEs), Th and U in meteorites and its cosmochemical implications, and (iv) development of analytical techniques applicable to meteorite samples. For the first subject, we established an analytical method for determining four halogens in a single sample weighing 50 to 100 mg and applied it to chondritic meteorite samples. We also investigated the distribution of Cl, Br and I in chondritic meteorites and observed that I is distributed in pyroxene and/or plagioclase to some extent, being different from Cl and Br. This observation seems to be very important in considering cosmochemical behavior of I, which has not been well described yet. For the second subject, we determined refractory siderophile elements in martian meteorites and observed that martian meteorites contain these elements at a level of 10^<-2> to 10^<-3> x Cl. This is understood in terms of an addition of siderophile elements as a last veneer after the formation of core. The third subject has just completed and the paper related with this subject will be prepared soon. In this subject, we determined REEs, Th and U in chondrules and observed that their abundances change in accordance with the activity of thermal metamorphism in the parent body.

Report

(4 results)
  • 2001 Annual Research Report   Final Research Report Summary
  • 2000 Annual Research Report
  • 1999 Annual Research Report
  • Research Products

    (22 results)

All Other

All Publications (22 results)

  • [Publications] P.Kong, M.Ebihara, H.Palme: "Siderophile elements in Martian meteorites and implication for core formation in Mars"Geochim. Cosmochim. Acta. 63. 1865-1875 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] P.Kong, M.Ebihara, H.Palme: "Distribution of siderophile elements in CR chondrites : Evidence for evaporation and..."Geochim. Cosmochim. Acta. 63. 2637-2652 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] M.Ebihara, K.Shinotsuka, H.Ozaki, Y.Oura: "Critical evaluation of CI chondrites as the solar system standard of elemental,..."In Origin of the elements in the solar system (ed. O.K.Manuel). 289-300 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] F.Kato, H.Ozaki, M.Ebihara: "Distribution of halogens in an Antarctic ordinary chondrite, Y-74014 (H6)"Antarctic Meteorite Res.. 13. 121-134 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] P.Kumar, M.Ebihara, S.K.Bhatiacharya: "^<196>Hg/^<202>Hg ratio and Hg content in meteorites and terrestrial standard rocks : ARNAA Study"Geochem.J.. 35. 101-116 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Z.K.Zhao, X.Y.Mao, M.Ebihara: "A casual relationship between extinction of dinosaurs and K/T iridium enrichment in...."Palaeography, Palaeoclimatolography, Palaeoechology. (印刷中).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] P.Kong: "Siderophile elements in Martian meteorites and implications for core formation in Mars"Geochim.Cosmochim.Acta. 63. 1865-1875 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] P.Kong: "Distribution of siderophile elements in CR chondrites : Evidence for evaporation and recondensation during chondrule formation"Geochim.Cosmochim.Acta. 63. 2637-2652 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] F.KATO: "Distribution of halogens in an Antarctic ordinary chondrite, Y-74014 (H6)"Antarctic Meteorite Res.. 13. 121-134 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] P.Kumar: "^<196>Hg/^<202>Hg ratio and Hg content in meteorites and terestrial standard rocks : A RNAA study"Geochem.J.. 35. 101-116 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Z.K.Zhao: "A causal relationship between extinction of dinosaurs and K/T iridium enrichment in the Nanxiong basin, south China : Evidence from dinosaur eggshells"Palaeography, Palaeochimatology, Palaeoechology. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] M.EBIHARA, ed. O.K.Manuel: "Critical evaluation of CI chondrites as the solar system standard of elemental abundances"In Origin of the elements in the solar system, Kluwer Academic/Plenum Publisher, New York. 289-300

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] P.Kumar, M.Ebihara, S.K.Bhattacharya: "^<196>Hg/^<202>Hg ratio and Hg content in meteorites and terrestrial standard rocks : A RNAA study"Geochem.J.. 35. 101-116 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Z.K.Zhao, X.Y.Mao, M.Ebihara: "A causal relationship between extinction of dinosaurs and K/T iridium enrichment"Palaeogeography, Palaeoclimatolography, Palaeoechology. (印刷中).

    • Related Report
      2001 Annual Research Report
  • [Publications] M.EBIHARA: "Critical evaluation of CI chondrites as the solar system standard..."Origin of the elements in the solar system(論文集). (印刷中). (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] P.KUMAR: "^<196>Hg/^<202>Hg ratio and Hg content in meteorites and terrestrial..."Geochemical Journal. 35(印刷中). (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] F.KATO: "Distribution of halogens in an Antarctic ordinary chondrite..."Antarctic Meteorite Research. 13. 121-134 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] M.EBIHARA: "How effectively is the photon activation analysis applied..."Journal of Radioanalytical and Nuclear Chemistry. 244. 491-496 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 海老原充: "微小宇宙物質の分析と化学組成"化学工業. 52. 220-228 (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] 海老原充: "宇宙物質の微量分析"RADIOISOTOPES. (印刷中). (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] F. KATO: "Distribution of halogens in an Antaretic ordinary chondrite,・・・"Antarctic Meteorite Research. 13(印刷中). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] M.EBIHARA: "How effectively is the photon actriration analysis applied to・・・"J.Radio anal. Nucl. Chem.. 244(印刷中). (2000)

    • Related Report
      1999 Annual Research Report

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Published: 1999-04-01   Modified: 2016-04-21  

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