過去１３万年間にわたる大阪湾東部沿岸地域の層序，堆積シークエンスと堆積環境

• 七山 太

• 土井 康裕

• 北田 奈緒子

• 竹村 恵二

書誌事項

タイトル別名

• Stratigraphic, sequence stratigraphic and sedimentary environment analyses on the late Pleistocene-Holocene sediments of the eastern side of Osaka Bay, central Japan since 130ka.
• カコ 13マンネンカン ニ ワタル オオサカワン トウブ エンガン チイキ ノ ソウ ジョ タイセキ シークエンス ト タイセキ カンキョウ

抄録

Stratigraphic, sequence stratigraphic and sedimentary environment analyses on the late Pleistocene-Holocene sediments of the eastern side of Osaka Bay, central Japan was carried out. The Suminoe cores taken from the Suminoe area on the western side of Osaka plain were used. Sedimentological, tephrochronological, AMS¹⁴C dating, paleontological and micro-paleontological methods were applied. We found seven sedimentary units (Sm-7 to Sm-1) and grouped them into two formations. The Uemachi Formation is composed of marine clay deposits (Sm-6) with shore face deposits at the basal part (Sm-7) with fluvial terrace deposits at the top part (Sm-5). The Namba Formation is a Holocene marine sandy shoreface deposit (Sm-3) with fluvial deposits probably of the last glacial period at the basal part (Sm-4) and delta-front deposits at the upper part (Sm-2). We recognized two sedimentary systems, such as bay-delta system (Sm-7 to Sm-6 and Sm-3 to Sm-2) and conglomeratic braided stream system (Sm-5 and Sm-4). Furthermore we grouped these cores into three depositional sequences (DS1 to DS3) since 130 ka.

収録刊行物

• 地質学雑誌

  地質学雑誌 107 (2), 179-197, 2001

  一般社団法人 日本地質学会

キーワード

• late Pleistocene-Holocene sediments

詳細情報

• CRID: 1390282681210271488
• NII論文ID: 10007427793
• NII論文ID: 110003013174
• NII書誌ID: AN00141768
• DOI: 10.5575/geosoc.107.179
• ISSN: 13499963
• ISSN: 00167630
• ISSN: http://id.crossref.org/issn/00167630
• NDL書誌ID: 5681582
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I5681582
• 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