日本海東縁久六島の鮮新世アルカリ玄武岩

DOI 被引用文献2件

書誌事項

タイトル別名
  • Pliocene alkali basalt from Kyuroku-shima Island, northeast of Japan Sea.

説明

We obtained a K-Ar age of 3.32 Ma (Pliocene epoch) for an alkali basalt sample from Kyuroku-shima Island in the northeast margin of Japan Sea. The sample is normally magnetized and probably correlates to the Gauss normal epoch. The N-type MORB-normalized incompatible element pattern and the K2O/TiO2 ratio. indicate that the alkali basalt has a character of typical island arc. The petrography and chemistry of the alkali basalt is similar to those of basalts from present Chokai Volcanic Zone, especially those from Oshima-Oshima volcano. A regional study of Pliocene volcanoes by Shuto (1989) and ours revealed an existence of the lateral variation back then at least within our study area.

収録刊行物

  • 岩鉱

    岩鉱 85 (1), 10-18, 1990

    一般社団法人　日本鉱物科学会

被引用文献 (2)*注記

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詳細情報 詳細情報について

  • CRID
    1390282681193139584
  • NII論文ID
    130003884675
  • DOI
    10.2465/ganko.85.10
  • ISSN
    18813275
    09149783
    http://id.crossref.org/issn/09149783
  • 本文言語コード
    ja
  • データソース種別
    • JaLC
    • Crossref
    • CiNii Articles
  • 抄録ライセンスフラグ
    使用不可

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