Formation of Fractures in Komagatake Volcano, Hokkaido

Katsui, Yoshio; Komuro, Hiroaki

北海道大学理学部紀要, 1984, 21(2), 183-195

Permalink : https://hdl.handle.net/2115/36728

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アクセス権	open access
URI	https://hdl.handle.net/2115/36728
タイトル	Formation of Fractures in Komagatake Volcano, Hokkaido
著者	著者名 Katsui, Yoshio
著者	著者名 Komuro, Hiroaki
言語	英語
発行日	1984-09
出版者	北海道大学
出版者	Hokkaido University
収録物名	北海道大学理学部紀要
収録物名	Journal of the Faculty of Science, Hokkaido University. Series 4, Geology and mineralogy
巻(号)	21(2)
ページ	183-195
抄録	Fractures developed in the atrio of Komagatake Volcano, Hokkaido, are classified into three main types. 1) 1929 fractures along the atrio margin, 2) 1929 concentric fractures, and 3) the 1942 major fissure. The former two fractures were formed by settling and compaction due to welding as well as settling of the 1929 pyroclastic deposits, respectively. These fractures were strongly controlled by the older topography. The 1942 major fissure extending across the atrio for 1.6 km in NW-SE, was initially produced by doming due to the excess magma pressure, and enlarged by explosions and subsequent collapse of the wall.
資源タイプ	紀要論文
出版タイプ	Version of Record
PISSN	0018-3474