完新世浅海堆積物の堆積速度の変化から見た桑名断層の活動間隔

• 鳴橋 龍太郎

  東京大学大学院新領域創成科学研究科環境学専攻

• 須貝 俊彦

  東京大学大学院新領域創成科学研究科環境学専攻

• 藤原 治

  核燃料サイクル開発機構東濃地科学センター

• 粟田 泰夫

  産業技術総合研究所活断層研究センター

書誌事項

タイトル別名

• Recurrence Interval of the Kuwana Fault Reconstructed from Holocene Synfaulting Shallow Marine Sediments on the Western Margin of the Nobi Plain, Central Japan
• カンシン セイセンカイ タイセキブツ ノ タイセキ ソクド ノ ヘンカ カラ ミタ クワナ ダンソウ ノ カツドウ カンカク

抄録

Holocene activity of the Kuwana Fault was reconstructed based on 82 AMS ¹⁴C datings and on stepwise changes in the depositional rates of shallow marine sediments in four drilled cores. Depositional rates on the footwall and hanging wall are nearly equal during the interseismic period. Depositional rate on the footwall becomes markedly larger than that of the hanging wall just after the appearance of the vertical displacement of the fault. Six probable and one possible paleo-seismic events, including the last two historical earthquakes, were detected during the last 7, 000 years as stepwise changes of depositional rate on both sides of the fault.<br>Timing of faulting events was estimated from depositional curves of four drilling cores. Probable ages of seismic events are approximately 6, 200cal BP, 5, 700cal BP, 4, 000cal BP, 2, 100cal BP, AD 745, and AD 1586. Average recurrence interval of the Kuwana Fault calculated from these data is about 1, 000 years. Average vertical slip rate of the fault is at least 1mm/y during the last 7, 000 years.

収録刊行物

• 第四紀研究

  第四紀研究 43 (5), 317-330, 2004

  日本第四紀学会

キーワード

• 桑名断層
• 完新世
• 活動間隔
• 浅海堆積物
• ¹⁴C年代
• 堆積速度

詳細情報

• CRID: 1390001206495818240
• NII論文ID: 10014188380
• NII書誌ID: AN0034136X
• DOI: 10.4116/jaqua.43.317
• ISSN: 18818129
• ISSN: 04182642
• ISSN: http://id.crossref.org/issn/04182642
• NDL書誌ID: 7117264
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7117264
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可