南サハリン西部の火山岩類のK-Ar年代および主成分,微量成分, Sr, Nd同位体比

DOI 被引用文献1件 オープンアクセス

書誌事項

タイトル別名
  • K-Ar ages, major and minor element compositions and Sr, Nd isotope ratios of volcanic rocks from the western part of south Sakhalin, USSR.
公開日
1992
DOI
  • 10.2465/ganko.87.50
公開者
一般社団法人　日本鉱物科学会

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説明

Cenozoic volcanic rocks are widely distributed in the south of Uglegorsk in the western part of South Sakhalin. In the north of the town, large numbers of dolerite sheets and dykes, which are represented by the Morotsu dolerite sheet, intrude the Miocene formations. K-Ar ages of two basalts, a dolerite and an andesite are 11.3, 11.8, 9.2 and 4.7 Ma respectively and these are consistent with the stratigraphical succession. However, one basalt dated at 18.0 Ma is older than the others.<br> Based on major element compositions, the basalts belong to the high alkali tholeiite series and the andesite to the calc-alkali rock series. On the MORB-normalized spidergram patterns of minor element compositions including REE, the volcanic rocks are divided into two groups. Those of the first group are similar to those of E-MORB and BABB and are different from that of high alkali tholeiite of the Japan arc because of enrichment of Nb. On the εNd-87Sr/86Sr diagram, two basalts and an andesite lie on the mantle array and are considered to have been derived from enriched source material which is different from that of the Quaternary volcanic rocks of NE Japan. The basalt and dolerite having higher εNd and 87Sr/86Sr may have been affected by interaction with sea water or post-magmatic alteration.

収録刊行物

  • 岩鉱

    岩鉱 87 (2), 50-61, 1992

    一般社団法人　日本鉱物科学会

被引用文献 (1)*注記

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詳細情報 詳細情報について

  • CRID
    1390282681192048768
  • NII論文ID
    130003884742
  • DOI
    10.2465/ganko.87.50
  • ISSN
    18813275
    09149783
  • 本文言語コード
    en
  • データソース種別
    • JaLC
    • Crossref
    • CiNii Articles
    • OpenAIRE
  • 抄録ライセンスフラグ
    使用不可

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