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Study on ESR and TL dating for late Pleistocene rocks

Research Project

Project/Area Number 63460050
Research Category

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

Allocation TypeSingle-year Grants
Research Field 地質学一般
Research InstitutionKyushu University

Principal Investigator

HAYASHI M.  Kyushu Univ. Fac. Eng. Assoc. Prof., 工学部地熱開発センター, 助教授 (40038592)

Co-Investigator(Kenkyū-buntansha) WATANABE K.  Kyushu Univ. Fac. Eng. Assistant, 工学部, 助手 (10182916)
SHINNO I.  Kyushu Univ. Gen. Education Prof., 教養部, 教授 (00038465)
Project Period (FY) 1988 – 1989
Project Status Completed (Fiscal Year 1989)
Budget Amount *help
¥4,200,000 (Direct Cost: ¥4,200,000)
Fiscal Year 1989: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 1988: ¥3,200,000 (Direct Cost: ¥3,200,000)
KeywordsESR / TL / fission track / zircon / morphology / 後期更新世 / 年代測定 / 電子スピン共鳴 / サーモルミネッセンス
Research Abstract

(1) Ill-crystallized quartz, which is not suitable for TL dating can be dated by ESR method. The age range of quarts samples for ESR dating will be from 1000 years to 2 million years.
(2) There are several ESR signals of zircon in a range from g=2.000 to 2.009, none of them being caused by impurity ions. The signal g=2.008 was first generated by ^<4O>Ca(n,alpha)^<37> Ar reaction in Ca-doped zircon, suggesting that it is due to the disintegration of alpha -particles from radioactive elements U and Th in natural zircon.
(3) Zircon has very strong thermoluminescence intensities, and therefore is one of the most suitable mineral for dating young rocks. The intensity was confirmed to increase proportionally to the artificial gamma -rays irradiation doses.
(4) The annual dose of zircon can be easily estimated from the TL measurement of dosimeters which are mixed with zircon powder for one month or longer.
(5) A new method of describing zircon crystal morphology quantitatively: it is applicable to various fields of earth science, including the distinction of essential zircon crystals from older accidental ones.

Report

(3 results)
  • 1989 Annual Research Report   Final Research Report Summary
  • 1988 Annual Research Report
  • Research Products

    (21 results)

All Other

All Publications (21 results)

  • [Publications] K.Watanabe: "Etching characteristics of fission tracks in Plio-Pleistocene zircon" Nucl.Tracks Radia.Meas.15. 171-174 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 森藤本行,田口幸洋,林正雄: "地熱変質岩のESR年代測定" 日本地熱学会誌. 11. 21-30 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 林正雄,中別府健一: "ジルコンのサ-モルミネッセンス年代" フィッショントラックニュ-スレタ-. 2. 27 (1981)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 大四雅弘,林正雄: "ジルコンの結晶形記載の新支援システム" 情報地質. 14B. 51-58 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 林正雄: "ジルコンの結晶形態と地球科学への応用" 地質学雑誌. 96. (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] M-Hayashi,I.shinno: "ESR signals of zircon irradiated with thermal neutrons andX-rays" J.Min.Petr.Econ.Geol.85. (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Watanabe, K.: "Etching characteristics of fission tracks in Plio-Pleistocene zircon" Nucl. Tracks, V.15 171-174 (1988).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Morifuji, M., Taguchi, S., Hayashi, M.: "ESR dating of geothermally altered quartz" Geoth. Res. Soc. Japan v.11, 31-30 (1989).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Daishi, M., Hayashi, M.: "A new computer supporting system to describe zircon crystal forms" Geol. Data Proc. v.14B 51-57 (1989).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Hayashi, M.: "Zircon crystal morphology and its application to earth science" J. Geol. Soc. Japan v.96.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Hayashi, M., Shinno, I.: "ESR signals of zircon irradiated with thermal neutrons and gamma-rays" J.Min.Petr.Econ. Geol. v.85.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] K.Watanabe: "Etching characteristics of fission tracks in pliopleistocene zircon" Nucl.Tracks Radiat.Meas.15. 171-174 (1988)

    • Related Report
      1989 Annual Research Report
  • [Publications] 森藤本行,田口幸洋,林正雄: "地熱変質岩のESR年代測定" 日本地熱学会誌. 11. 21-30 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] 大四雅弘,林正雄: "ジルコン結晶形記載の新支援システム" 情報地質. 14B. 51-58 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] 林正雄: "ジルコンの結晶形態と地球科学への応用" 地質学雑誌. 96. (1990)

    • Related Report
      1989 Annual Research Report
  • [Publications] M.Hayashi,I.Shinno: "ESR signals of zircon irradiated with thermal neutrons and γ-rays" J.Min.Petr.Econ.Geol.85. (1990)

    • Related Report
      1989 Annual Research Report
  • [Publications] 森藤本行,田口幸洋,林正雄: 日本地熱学会誌. 11. 21-30 (1989)

    • Related Report
      1988 Annual Research Report
  • [Publications] Isamu Shinno;Yonezo Maeda: Mineralogical Journal. 14. 191-197 (1989)

    • Related Report
      1988 Annual Research Report
  • [Publications] 林正雄: 日本岩石鉱物鉱床学会誌.

    • Related Report
      1988 Annual Research Report
  • [Publications] 渡辺公一郎,前田武司,本多照幸: フィッショントラック研究会ニュースレター.

    • Related Report
      1988 Annual Research Report
  • [Publications] 林正雄,中別府健一: フィッショントラック研究会ニュースレター.

    • Related Report
      1988 Annual Research Report

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Published: 1988-04-01   Modified: 2016-04-21  

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