下北半島東部の新第3系〜第4系の層序と珪藻化石 <Bull. Natn. Sci. Mus., Tokyo>Stratigraphy and Fossil Diatoms of the Neogene to Quaternary Formations in the Eastern Shimokita Peninsula, Aomori Prefecture

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The Neogene to Quaternary formations distributed in the eastern Shimokita Peninsula are divided into the Early Miocene Sarugamori and Tomari Formations, the early Middle to early Late Miocene Gamanosawa Formation, the Late Pliocene Sunagomata Formation, the Middle Pleistocene Hamada Formation and the post-middle Pleistocene Tanabu Formation in ascending order. The Gamanosawa Formation is subdivided into the Basal, the Lower, the Middle, the Upper and the Uppermost Members based on the lithostratigraphy. The Lower Member belongs to the Denticulopsis lauta Zone to the D. hyalina Zone, the Middle Member belongs to the upper D. hyalina Zone to the D. praedimorpha Zone, the Upper Member belongs to the D. praedimorpha Zone, the Uppermost Member belongs to the D. praedimorpha Zone to the Thalassiosira yabei Zone. Species composition of the fossil diatoms changed in the middle Gamanosawa Formation. This floral change is inferred to correspond to the cooling of the global climatic change.

収録刊行物

  • Bulletin of the National Science Museum Ser. C Geology & Paleontology

    Bulletin of the National Science Museum Ser. C Geology & Paleontology 16(2), p55-78, 1990-06

    国立科学博物館

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各種コード

  • NII論文ID(NAID)
    110004312289
  • NII書誌ID(NCID)
    AA10509611
  • 本文言語コード
    ENG
  • 資料種別
    雑誌論文
  • ISSN
    0385244X
  • NDL 記事登録ID
    3676478
  • NDL 刊行物分類
    ME71;ME61
  • NDL 雑誌分類
    ZM49(科学技術--地球科学--地質)
  • NDL 請求記号
    Z53-S373
  • データ提供元
    CJP引用  NDL  NII-ELS 
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