瀬戸内海東部,番ノ州地域に分布する備讃瀬戸層群中の火山灰層のフィッション・トラック年代 Fission-track age of the volcanic ash layer in the Bisan-seto Group around the Bannosu region of the eastern parts of the Seto Inland Sea, Japan

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Fission-track dating of zircon and volcanic ash analysis were carried out for Bannosu volcanic ash in the Bisan-seto Group around the Bannosu region in the northeast Shikoku. The first reliable radiometric age, 0.63±0.14 Ma (1σ), was obtained for the volcanic ash layer. On the other hand, the refractive indexes of the volcanic glasses show the 1.5004-1.5071 (mode: 1.504-1.506). On the basis of these values and other petrographical data, this volcanic ash layer is correlated to the Kb-Ks volcanic ash. These results are important to discuss the sedimentary environment of the Seto Inland Sea in Pleiocene to Holocene.

収録刊行物

  • 地質學雜誌

    地質學雜誌 112(10), 608-611, 2006-10-15

    日本地質学会

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各種コード

  • NII論文ID(NAID)
    110004837483
  • NII書誌ID(NCID)
    AN00141768
  • 本文言語コード
    JPN
  • 資料種別
    SHO
  • ISSN
    00167630
  • NDL 記事登録ID
    8557806
  • NDL 雑誌分類
    ZM49(科学技術--地球科学--地質)
  • NDL 請求記号
    Z15-174
  • データ提供元
    CJP書誌  NDL  NII-ELS  J-STAGE 
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