千葉県銚子地域, 名洗層群の下部層準に含まれる有孔虫化石群集   :   The Foraminiferal Assemblage from the Lower Part of the Naarai Formation, Choshi District, Chiba Prefecture 

作成者 石川, 秀雄, 八田, 明夫
作成者 (ヨミ) イシカワ, ヒデオ
作成者の別表記 Ishikawa, Hideo, Hatta, Akio
日本十進分類法 (NDC) 370
内容 The Naarai Formation, distributed in the southern part of Choshi Peninsula, is composed of tuffaceous sandstone containing many pumice and tuff. The thickness of the formation is about 120m, and the formation generally dips westward in 2 - 5 degrees. One of the horizon in the lower part of the formation, contains many balanus and foraminiferal fossils. The foraminiferal assemblage from the "Balanus horizon" in the Naarai Formation, is described and discussed in this paper from the stratigraphical and paleontological point of view. The results can be summarized as follows : (1) Juding from the ranges of the planktonic foraminifera, the age of the "Balanus horizon" may correspond with N.19 of Blow's zonation scheme (1969). (2) The planktonic ratio of the assemblage and the benthonic foraminiferal fauna indicate the paleo-enviroment of the middle bathyal condition.
公開者 千葉大学教育学部
コンテンツの種類 紀要論文 Departmental Bulletin Paper
DCMI資源タイプ text
ファイル形式 application/pdf
ISSN 0577-6856
NCID AN00179534
掲載誌情報 千葉大学教育学部研究紀要. 第2部 Vol.33 page.21-42 (19841220)
情報源 Bulletin of the Faculty of Education, Chiba University. Part II
言語 日本語
著者版フラグ publisher

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