地球科学
Online ISSN : 2189-7212
Print ISSN : 0366-6611
74 巻 , 3 号
選択された号の論文の4件中1~4を表示しています
フォト
原著論文
短報
  • 丹下 輝道, 常盤 哲也
    原稿種別: 短報
    2020 年 74 巻 3 号 p. 99-103
    発行日: 2020/07/25
    公開日: 2021/02/25
    ジャーナル フリー

    We carried out geological and radiolarian studies in the northern part of the Nishinoomote Formation of the Kumage Group in the South Shimanto Belt, Tanegashima Island. The Nishinoomote Formation in the study area consists mainly of thick bedded sandstone and alternating beds of sandstone and shale with minor amount of varicolored shale. As a result of the radiolarian study, Late Eocene radiolarians such as Lithocyclia ocellus group and Lychnocanium neptunei were obtained from two samples of black shales, and Late Eocene radiolarians such as Lychnocanoma babylonis and Shiphocampe missilis were recognized in one sample of varicolored shale. In the previous study, Early Oligocene radiolarian fossils and calcareous nannofossils had been reported from the northernmost part of the Nishinoomote Formation. Therefore, considering the difference of depositional age and lithology, further study is needed to clarify the relationship between the northernmost part and the northern part of the Nishinoomote Formation.

資料
feedback
Top