群馬県富岡地区堆積岩の臭素およびヨウ素含量 Bromine and iodine contents of sedimentary rocks from Tomioka, Gunma Prefecture, Japan

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抄録

The bromine and iodine contents were determined simultaneously by neutron activation analysis on two boreholes of the Tertiary marine siltstones and marine tuffs collected from Tomioka, southwestern Gunma Prefecture, and the relationship between these elemental contents and the organic carbon content was investigated. The arithmetic means of the bromine and iodine contents of siltstone samples were 1.9ppm and 2.0ppm, respectively. Tuff samples gave averages of 0.69ppm for the bromine content and 0.75ppm for the iodine content. The positive correlations were observed between the halogen contents and the organic carbon content of the sedimentary rocks analyzed. This suggests that the bromine and iodine in the sedimentary rocks originate from marine plants and microorganisms incorporated during sedimentary processes.

収録刊行物

  • 地球化学

    地球化学 12(1), 1-4, 1978

    一般社団法人日本地球化学会

各種コード

  • NII論文ID(NAID)
    110008679641
  • NII書誌ID(NCID)
    AN00141280
  • 本文言語コード
    JPN
  • ISSN
    0386-4073
  • NDL 記事登録ID
    1922176
  • NDL 刊行物分類
    ME41(火山・岩石)
  • NDL 雑誌分類
    ZM41(科学技術--地球科学)
  • NDL 請求記号
    Z15-645
  • データ提供元
    NDL  NII-ELS  J-STAGE 
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