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Vol.XVIII, No.3 >

Fossil Rootless Fumaroles in the Noboribetsu Pumice Flow Deposits and Their Alteration Products in the Noboribetsu Formation, Kuttara Volcano, Southwestern Hokkaido, Japan

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Title: Fossil Rootless Fumaroles in the Noboribetsu Pumice Flow Deposits and Their Alteration Products in the Noboribetsu Formation, Kuttara Volcano, Southwestern Hokkaido, Japan
Authors: Kawachi, Shimpei Browse this author
Ishii, Jiro Browse this author
Matsui, Masaru Browse this author
Miyasaka, Seigo Browse this author
Nakajima, Masahiro Browse this author
Kiminami, Kazuo Browse this author
Kontani, Yoshihiro Browse this author
Yamazaki, Tetsuyoshi Browse this author
Hanabusa, Hiroshi Browse this author
Kimura, Gaku Browse this author
Shuto, Takami Browse this author
Maniwa, Ken Browse this author
Issue Date: Mar-1978
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: 18
Issue: 3
Start Page: 291
End Page: 303
Abstract: Many fossil rootless fumaroles are found in the upper unwelded facies of the Noboribetsu Pumice Flow Deposits, which are distributed around the Kuttara Caldera, SW Hokkaido. Rootless crater pits immediately above the fumaroles are filled by pumice, scoria, ash, and mud of the Noboribetsu Formation overlying the Noboribetsu Pumice Flow Deposits. Alteration due to the fumarolic action clearly extends into the Noboribetsu Formation. The origin of the Noboribetsu Formation is suggested to be a base surge deposit based on its distribution and lithological characteristics.
Type: bulletin (article)
URI: http://hdl.handle.net/2115/34850
Appears in Collections:Journal of the Faculty of Science, Hokkaido University. Series 4, Geology and mineralogy > Vol.XVIII, No.3

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