新潟県蒲原山地の足尾帯泥岩から見出された前期ジュラ紀放散虫化石

• 内野 隆之

  産業技術総合研究所地質情報研究部門

• 堀 利栄

  愛媛大学大学院理工学研究科

書誌事項

タイトル別名

• Early Jurassic radiolarian fossils from mudstone of the Ashio Terrane in the Kambara Mountains, Niigata Prefecture, Japan
• ニイガタケン カンバラ サンチ ノ アシオタイ デイガン カラ ミイダサレタ ゼンキ ジュラキ ホウサンチュウ カセキ

抄録

Early Jurassic radiolarian faunae were extracted from mudstone samples collected at three localities (Se1, Ik1, and Jo2) in an accretionary complex within the Ashio Terrane in the Kambara Mountains, Niigata Prefecture, Japan. The faunae of both Se1 and Ik1 are dominated by Canoptum species, in association with two characteristic species belonging to Gorgansium (G. sp. A and G. sp. B) for Se1, and species belonging to Parahsuum, Lantus, and Helvetocapsa for Ik1. The fauna in Jo2 consists mainly of the species of Parvicingula, Zhamoidellum, and gen. et sp. indet. B.<br>Based on a comparison of these radiolarians with those from North America, Europe, and Southwest Japan, the ages of the faunae from Se1, Ik1, and Jo2 are Hettangian, Late Pliensbachian, and Middle to Late Toarcian/Aalenian?, respectively.<br>This is the first report of radiolarian fossils from terrigenous clastic rocks (mudstone) in the Kambara Mountains; thus, this result contributes to reconstructions of oceanic plate stratigraphy in the region and to correlating the area with other accretionary complexes in the Ashio Terrane.

収録刊行物

• 地質学雑誌

  地質学雑誌 116 (8), 441-446, 2010

  一般社団法人 日本地質学会

キーワード

• Radiolaria
• Early Jurassic
• Hettangian
• Pliens bachian
• Toarcian
• accretionary complex
• Ashio Terrane
• Kambara Mountains

詳細情報

• CRID: 1390282681214764160
• NII論文ID: 130000413569
• NII書誌ID: AN00141768
• DOI: 10.5575/geosoc.116.441
• ISSN: 13499963
• ISSN: 00167630
• NDL書誌ID: 10814322
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I10814322
• Web Site: https://www.jstage.jst.go.jp/article/geosoc/116/8/116_8_441/_pdf
• 本文言語コード: ja
• 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