紀伊半島の四万十帯北帯日高川層群竜神層から産出したカンパニアン後期放散虫化石  [in Japanese] Late Campanian radiolarians obtained from the Ryujin Formation in the Hidakagawa Group, Northern Shimanto Belt, Kii Peninsula, Japan  [in Japanese]

    • 常盤 哲也 Tokiwa Tetsuya
    • 名古屋大学大学院環境学研究科地球環境科学専攻:(現)(独)日本原子力研究開発機構幌延深地層研究ユニット Division of Environmental Earth Sciences, Graduate School of Environmental Studies, Nagoya University:(Present office)Horonobe Underground Research Center, Japan Atomic Energy Agency
    • 丹羽 耕輔 Niwa Kohsuke
    • 名古屋大学大学院環境学研究科地球環境科学専攻 Division of Environmental Earth Sciences, Graduate School of Environmental Studies, Nagoya University

Abstract

The Ryujin Formation, occupying a wide area in the Cretacesous Hidakagawa Group of Shimanto Belt in the Kii Peninsula, Southwest Japan, has been considered to be an accretionary complex of late Campanian in age. Radiolarian fossils of the age evidence have been found from only the western part of the Hidakagawa Group. In this article, we report radiolarian fossils of the Amphipyndax tylotus interval zone newly found from the central part of the Hidakagawa Group. Therefore the geologic age of the Ryujin Formation was firmly established to be a late Campanian.

Journal

Journal of the Geological Society of Japan   [List of Volumes]

Journal of the Geological Society of Japan 113(6), 270-273, 2007-06-15  [Table of Contents]

The Geological Society of Japan

References:  12

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Cited by:  1

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Codes

  • NII Article ID (NAID) :
    110006385770
  • NII NACSIS-CAT ID (NCID) :
    AN00141768
  • Text Lang :
    JPN
  • Article Type :
    Journal Article
  • ISSN :
    00167630
  • NDL Article ID :
    8879063
  • NDL Source Classification :
    ZM49(科学技術--地球科学--地質)
  • NDL Call No. :
    Z15-174
  • Databases :
    CJP  CJPref  NDL  NII-ELS  J-STAGE