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タイトルヨミ
オオダシ ニマチョウ コトガハマ ノ カイヒンサ ニ フクマレル ユウコウチュウ グンシュウ
タイトル別表記
Foraminiferal assemblages from the beach sand of Kotogahama beach, Nimacho, Oda City, Shimane Prefecture
ファイル
言語
日本語
属性
論文
著者
宮田 裕輔
内容記述(抄録等)
Kotogahama beach in Oda City, Shimane Prefecture is one of the famous singing-sand beaches of Japan. We conducted foraminiferal faunal analyses on sand samples collected at Kotogahama and surrounding beaches. Foraminiferal assemblages in this study area are mainly composed of species that inhabit rock reefs. Such rock reef species might be transported from adjacent rock reef regions and accumulate into beach sands. The foraminiferal assemblages at the singing-sand beaches, namely, Kotogahama and Otsube, were dominated by the exclusive occurrence of Amphistegina spp. The spacial distribution patterns of foraminifera and sand grain size suggest that the main direction of sand grain transportation along the coastline might be southwest to northeast at Kotogahama beach, and foraminiferal shells except Amphistegina spp. might be removed from beach sands into an offshore area with finer-grained materials. Consequently, the shells of Amphistegina spp. might be concentrated in beach sands because of an outstanding sorting process at the singing-sand beaches owing to their large and robust shell.
主題
Foraminifera
Kotogahama
Singing sand
Oda City
Shimane Prefecture
掲載誌名
島根大学地球科学研究報告
37
開始ページ
21
終了ページ
32
ISSN
13439774
発行日
2020-03-25
資料タイプ
紀要論文
ファイル形式
PDF
著者版/出版社版
出版社版
業績ID
e37589
部局
総合理工学部