白亜系山中層群石堂層に含まれる石灰岩の岩相・生物相とその年代 Lithofacies, biota and geological age of limestone blocks in the Ishido Formation of the Cretaceous Sanchu Group, Central Japan

この論文にアクセスする

この論文をさがす

著者

    • 猪瀬 弘瑛 Inose Hiroaki
    • 筑波大学大学院生命環境科学研究科 Graduate School of Life and Environmental Sciences, University of Tsukuba
    • 指田 勝男 Sashida Katsuo
    • 筑波大学大学院生命環境科学研究科 Graduate School of Life and Environmental Sciences, University of Tsukuba

抄録

Limestone blocks yielding corals, foraminifers and other fossils are embedded in the Lower Cretaceous Ishido Formation of the Sanchu Group. These limestone blocks also contain oncoids consisting of calcibionts. Limestones are lithologically classified into floatstone and mudstone. Occurrence of planktonic foraminiers such as Globuligerina hoterivica (Subbotina), Hedbergella planispira (Tappan), and Globigerinelloides aff. blowi (Bolli) indicates the age of limestone blocks as Early Aptian. Previously, a late Hauterivian to late Barremian age was assigned to the Ishido Formation based on ammonoids. This ammonoid age contradicts the age indicated by planktonic foraminifers. The depositional environment of these limestones is thought to be patch reef based on the oncoid facies and occurrence of microencruster, Bacinnella-Lithocodium association.

収録刊行物

  • 化石

    化石 89(0), 5-14, 2011

    日本古生物学会

参考文献:  32件中 1-32件 を表示

各種コード

  • NII論文ID(NAID)
    110008593535
  • NII書誌ID(NCID)
    AN00041606
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    0022-9202
  • NDL 記事登録ID
    11072880
  • NDL 雑誌分類
    ZR1(科学技術--生物学) // ZM41(科学技術--地球科学)
  • NDL 請求記号
    Z18-838
  • データ提供元
    CJP書誌  NDL  NII-ELS  J-STAGE 
ページトップへ