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Developmental Research of mass spectrometric system for laser probe dating of mineral

Research Project

Project/Area Number 03504003
Research Category

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

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

Principal Investigator

ITAYA Tetsumaru  Okayama University of Science, Hiruzen Research Institute, Professor, 蒜山研究所, 教授 (60148682)

Co-Investigator(Kenkyū-buntansha) HYODO Hironobu  Okayama University of Science, Hiruzen Research Institute, Lecturer, 蒜山研究所, 講師 (50218749)
Project Period (FY) 1991 – 1993
Project Status Completed (Fiscal Year 1993)
Budget Amount *help
¥36,300,000 (Direct Cost: ¥36,300,000)
Fiscal Year 1993: ¥2,800,000 (Direct Cost: ¥2,800,000)
Fiscal Year 1992: ¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 1991: ¥30,100,000 (Direct Cost: ¥30,100,000)
KeywordsMass spectrometer / Noble gas / Argon / Laser / Stepwise heating / Temperature control / Ar-Ar dating / Pinpoint dating / K-Ar年代 / レーザープローブ / YAGレーザー / アルゴンレーザー / 微小部年代 / レ-ザ-プロ-ブ / YAGレ-ザ- / アルゴンレ-ザ-
Research Abstract

We have designed and constructed new mass spectrometer and the associated system with ultra high sensitivity and low background for noble gas analysis, and then proceeded the test analysis. This system has been presented at 29th Internatinal Geological Congress in Kyoto. This mass spectrometric system having three collectors has made it possible to analyze simultaneously three argon isotopes and has extremely high precision for the isotopic analysis in comparison with the present system with single collector, being powerful for dating young volcanic rocks. Unfortunately, the ion gun in MS Happened to have some troubles in middle of the final research year, making it imposible to analyze exactly natural samples now. We have required the improvement of ion gun and the rebuilding by Ayumi Industry Co., Ltd. We were not able to complete the perfect system until end of the term of project but do not think this project unsuccessful because we have already catched the basic ability of this mass spectrometric system before the trouble. We believe this is the first mass spectrometer with triple collector system for noble gas analysis in the world.
We have sexamined the basic problem of argon analysis of natural rocks and minerals using the present mass spectrometer and applied the established analytical technique to geological materials. The lots of results have been published in many literatures. We have also developed laser probe argon extraction system for very small aount of materials or fine grained single crystal for Ar-Ar dating. This has made it possible to detect argon from the materials of few micro gram and control temperatures of the materials with a relative accurracy of +-1゚C between 500 and 1500゚C in the stepwise heating. This is also applicable to laser probe Ar-Ar dating of single crystal and examination of thermal history of the host rock. Its precision is probably the best in the world.

Report

(4 results)
  • 1993 Annual Research Report   Final Research Report Summary
  • 1992 Annual Research Report
  • 1991 Annual Research Report
  • Research Products

    (29 results)

All Other

All Publications (29 results)

  • [Publications] T.Itaya et al.: "Argon isotope analysis by a newly developed mass spectrometric system for K-Ar dating" Mineral.Journal. 15. 203-221 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] T.Itaya et al.: "Degassing of argon from young geological materials by low temperature stepwise heating" Mineral.Journal. 15. 309-320 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 兵藤博信 他: "レーザーを用いた段階加熱による単結晶鉱物からのアルゴンの抽出" 岡山理科大学蒜山研究所報告. 19. 53-60 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] H.Hyodo et al.: "Tectonothermal history in the Mattawa area,Ontario,Canda,deduced from pleomagnetism and 40Ar/39Ar dating of a Grenville dike" J.Geophys.Res.98. 18001-18010 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] H.Hyodo and D.York: "The discovery and significance of a fossilized radiogenic argon wave(argonami)in the earth's crust" Geophysical Research letter. 20. 61-64 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] T.Itaya and S.Fukui: "Phengite K-Ar ages of schists from the Sanbagawa southern marginal belt,central Shikoku,SW Japan:Influence of detrital mica and deformation on age" The Island Arc. 3(in press). (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] T.Itaya, K.Nagao, K.Inoue, Y.Honjou, T.Okada and A.Ogata: "Argon isotope analysis by a newly developed mass spectrometric system for K-Ar dating" Mineralogical Journal. 15. 203-221 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] T.Itaya, H,Ito and K.Nagao: "Degassing of argon from young geological materials by low temperature stepwise heating" Mineralogical Journal. 15. 309-320 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] H.Hyodo, T.Okada, T.Matsuda and T.Itaya: "Stepwise argon extraction from a single mineral grain by laser heating" Bull. Hiruzen Res. Inst.19. 53-60 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] H.Hyodo, D.York and D.J.Dunlop: "Tectonothermal history in the Mattawa area, Ontario, Canda, deduced from paleomagnetism and 40Ar/39Ar dating of a Grenville dike" J.Geophys. Res.98. 18001-18010 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] H.Hyodo and D.York: "The discovery and significance of a fossilized radiogenic argon wave (argonami) in the earth's crust" Geophys. Res. Ietter. 20. 61-64 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] T.Itaya and S.Fukui: "Phengite K-Ar ages of schists from the Sanbagawa southern marginal belt, central Shikoku, SW Japan : Influence of detrital mica and deformation on age" The Island Arc. 3, (in press). (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 兵藤博信 他: "レーザーを用いた段階加熱による単結晶鉱物からのアルゴンの抽出" 岡山理科大学蒜山研究所報告. 19. 53-60 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] H.Hyodo et al.: "Tectonothemal history in the Mattawa area,Ontario,Canada,deduced from pleomagnetism and 40Ar/39Ar dating of a Grenville dike" J.Geophys.Res.98. 18001-18010 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] H.Hyodo and D.York: "The discovery and significance of a fossilized radiogenic argon wave(argonami)in the earth,s crust" Geophysical Research letter. 20. 61-64 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] T.Itaya and S.Fukui: "Phengite K-Ar ages of schists from the Sanbagawa southeyn marginal belt,central Shikoku,SW Japan:Influenece of detrital mica and deformation on age" The Island Arc. 3,(in press). (1994)

    • Related Report
      1993 Annual Research Report
  • [Publications] R.M.Briggs et al.: "K-Ar ages and paleomagnetism of the South Auckland volcanic field,North Island,New Zealand" NZ Jour.Geol.Geophys.37,(in press). (1994)

    • Related Report
      1993 Annual Research Report
  • [Publications] R.B.Sorkhabi et al.: "K/Ar cooling ages from Zanskar Himalaya:implications for the tectonics and exhumation of higher Himalayam metamorphic complex" Current Science. 65. 687-693 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 沢井 長雄: "西南北海道千歳・轟・手稲金銀鉱脈鉱床のK-Ar年代" 鉱山地質. 42. 323-330 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] P.M.Black: "K-Aragedata and geochemistry of the Kimitahi volcanics,Western Hauraki ritt,North Island,New Aealand" New Zealand Journol of Geolosy and Geophysies. 35. 403-413 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] N.Gouchi: "K-Arages of white mich froctions from the susuhai metamorphicrocks in Sakhalin,far easp Russia" Joul.FAc.Sciy Hokkaido University. 23. 281-286 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] 永尾 隆志: "熊本県、天草下島のソレイアイト質玄武岩と高マグネシア安山岩のK-Ar年代と岩石学的特徴" 岩鉱. 87. 283-290 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] 田中 秀実: "赤石製線の断層ガウジとそのK-Ar年代" 地質学雑誌. 98. 39-48 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] 兵藤 博信: "希ガス用質量分析計のブランクの特性とその補正" 岡山理大蒜山研報. 18. 59-65 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] 沢 勲: "白頭山への道" 大阪経済法科大学出版部, 113 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] ITAYA,T.: "Argon isotope analysis by a newly diveloped mass spectrometeric system for K-Ar dating" Mineral.Jour.15. 203-221 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Itaya,T.: "Degassing of argon from young geological materials by low temperature stepwise heating" Mineral.Jour.15. 309-320 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Okada,T.: "Argon isotoge analysis by newly diveloped mass spectrometer with triple collectors" Mineral.Jour.

    • Related Report
      1991 Annual Research Report
  • [Publications] Okada,T.: "Laser stig heating of a single gain and raregas analysis" Mineral.Jour.

    • Related Report
      1991 Annual Research Report

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Published: 1991-04-01   Modified: 2016-04-21  

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