中津層の化石有孔蟲群について : 日本新生代微化石層序學的研究其の1

• 中世古 幸次郎

• 澤井 清

書誌事項

タイトル別名

• Foraminiferal Fauna of the Nakatsu Formation (Microbiostratigraphic study of the Cainozoic strata of Japan, series I)
• ナカツソウ ノ カセキユウコウチュウグン ニ ツイテ

抄録

The foraminiferal samples dealt with herein were collected from the control section of the Nakatsu formation exposed on the River Sagami., Microbiostratigraphically, the Nakatsu can be subdivided into two zones, the lower, the Quinqueloculina bicostata and the upper, the Rotalia sagamiensis., Many of the species from the Quinqueloculina bicostata zone, which includes five zonules, are known in shallow waters from the northern part of Japan, and this zone contains such megafossils as Umbonium arenarium, U, obsoletum and U., conglomeratum., Rotalia sagamiensis zone which includes four zonules, is characterised by the abundance of Rotalia, Nodosaria, Burimina, Bolivina, and Gyroidina, and contains many characteristic species such as Planuleria japonica, Parafrondicularia japonica, Plectofrondicularia nakatsuensis n., sp., and Robulus submamilligerus var., etc., ., Judging from the above criteria, the Lower Nakatsu is considered to have been deposited in shallow and cold waters and the Upper Nakatsu in deeper and warmer water than the Lower., The writers think that the Lower Nakatsu is the upper part of the lower Pliocene (H_1b) and the Upper Nakatsu is the lower part of the middle Pliocene (H₂).,

収録刊行物

• 地質学雑誌

  地質学雑誌 55 (650-651), 205-210, 1950

  一般社団法人 日本地質学会

キーワード

• General Earth and Planetary Sciences
• General Engineering
• General Environmental Science

詳細情報

• CRID: 1390282681215133056
• NII論文ID: 110003016981
• NII書誌ID: AN00141768
• DOI: 10.5575/geosoc.55.205
• ISSN: 13499963
• ISSN: 00167630
• NDL書誌ID: 9967843
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I9967843
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可