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Title Transcription
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
Title Alternative
Geology around the Kotogahama beach, Nima-cho, Oda City, Shimane Prefecture
File
language
jpn
Author
Hayashi, Hiroki Department of Geoscience, Interdisciplinary Graduate School of Science and Engineering, Shimane University
Komura, Tetsuya Graduate School of Shimane University
Ohira, Hiroto Department of Geoscience, Interdisciplinary Graduate School of Science and Engineering, Shimane University
Sampei, Yoshikazu Department of Geoscience, Interdisciplinary Graduate School of Science and Engineering, Shimane University
Nomura, Ritsuo Faculty of Education, Shimane University
Kawano, Shigenori Tochigi Prefectural Museum
Description
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.
Subject
Kotogahama
Singing sand
Oda City
Shimane Prefecture
Journal Title
島根大学地球資源環境学研究報告
Volume
34
Start Page
77
End Page
88
ISSN
13439774
Published Date
2016-03-05
NCID
AA11455176
Publisher
島根大学大学院総合理工学研究科地球資源環境学教室
NII Type
Departmental Bulletin Paper
Format
PDF
Text Version
出版社版
OAI-PMH Set
Department of Geoscience, Interdisciplinary Graduate School of Science and Engineering
Department of Natural Science Education, Faculty of Education
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