島根県大田市仁摩町琴ヶ浜周辺の地質

• 林, 広樹

• 幸村, 哲也

• 大平, 寛人

• 三瓶, 良和

• 野村, 律夫

• 河野, 重範

書誌事項

タイトル別名

• シマネケン オオダシ ニママチ キンガハマ シュウヘン ノ チシツ
• Geology around the Kotogahama beach, Nima-cho, Oda City, Shimane Prefecture
• シマネケン オオダシ ニマチョウ コトガハマ シュウヘン ノ チシツ

抄録

The Kotogahama beach in Oda City, Shimane Prefecture is one of the famous singing sand beaches of Japan. We investigated the geology around the Kotogahama beach to clarify the origin and evolution of singing sand. The stratigraphy of the study area is composed of the Miocene Kuri Formation, Plio-Pleistocene Tsunozu Formation, Pleistocene Oe-Takayama Volcanic Rocks, old fan deposits, terrace deposits, Sashimi Formation, and Holocene deposits in ascending order. Among them, the Kuri Formation, which mainly consists of pyroclastic rocks, is most common in the study area. Zircon fission-track dating for the rhyolitic pumice tuff of the Kuri Formation suggested an age of 15.8 ± 0.6 Ma. CNS and microfossil analyses of the muddy layers of the Kuri Formation also suggest that this formation comprises marine and fresh-water deposits. The geologic structure of the Kuri Formation in the Kotogahama area is characterized by a gentle syncline and anticline with a WNW-ESE trend. The shape of the Kotogahama basin corresponds well to the strike of the Kuri Formation. The geomorphology of the Kotogahama beach is primarily controlled by the half-basin structure of the Kuri Formation.

収録刊行物

• 島根大学地球資源環境学研究報告

  島根大学地球資源環境学研究報告 34 77-88, 2016-03-05

  島根大学大学院総合理工学研究科地球資源環境学教室

キーワード

• Kotogahama
• Singing sand
• Oda City
• Shimane Prefecture

詳細情報

• CRID: 1050282814185919104
• NII論文ID: 120005749768
• NII書誌ID: AA11455176
• ISSN: 13439774
• NDL書誌ID: 027430299
• Web Site: http://ir.lib.shimane-u.ac.jp/35678
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I027430299
• 本文言語コード: ja
• 資料種別: departmental bulletin paper
• データソース種別:
  • IRDB
  • NDL
  • CiNii Articles
  • KAKEN