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Vol.XXI, No.2 >

Formation of Fractures in Komagatake Volcano, Hokkaido

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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/36728

Title: Formation of Fractures in Komagatake Volcano, Hokkaido
Authors: Katsui, Yoshio Browse this author
Komuro, Hiroaki Browse this author
Issue Date: Sep-1984
Publisher: 北海道大学
Journal Title: 北海道大学理学部紀要
Journal Title(alt): Journal of the Faculty of Science, Hokkaido University. Series 4, Geology and mineralogy
Volume: 21
Issue: 2
Start Page: 183
End Page: 195
Abstract: 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.
Type: bulletin (article)
URI: http://hdl.handle.net/2115/36728
Appears in Collections:Journal of the Faculty of Science, Hokkaido University. Series 4, Geology and mineralogy > Vol.XXI, No.2

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