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- 守屋 以智雄
- 愛知県立大学一般教育
書誌事項
- タイトル別名
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- History of Akagi Volcano
- アカギ カザン ノ ケイセイシ
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Mt. Akagi is a Quaternary volcano situated in the northwestern margin of the Kanto Plain, Gunma Prefecture. This is a conical volcano with a small caldera (2-4 km across) at the summit. The history of this volcano is divided into three stages as follows : (1) the older stratovolcano (2) the younger stratovolcano (3) the central cone. In the first stage a great deal of andesite lavas effused, accompanied with considerable volumes of scoria falls and flows, as the result a cone about 2500m high above sea level and about 60 cubic kilometers in volume was formed. Through the second stage paroxysmal activities were dominant erupting pyroclastic falls and flows about 40 cubic kilometers in volume. Just before the third stage the small caldera was formed in the summit of the younger stratovolcano composed of loose pyroclastic materials. In the caldera two dacite dome lavas extruded. The domes are underlain by the Kanuma pumice fall deposit which is correlated with the upper Musashino loam (several ten thousand years B.P.) and overlain by the Itahana pumice fall deposit (10000-20000 years B.P.). So it is presumed that the activity of Akagi Volcano was finished by 20000-30000 years B.P.
収録刊行物
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- 火山.第2集
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火山.第2集 15 (3), 120-131, 1971
特定非営利活動法人 日本火山学会
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詳細情報 詳細情報について
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- CRID
- 1390001206121232512
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- NII論文ID
- 110002996937
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- NII書誌ID
- AN10512786
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- ISSN
- 04534360
- 24330590
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- NDL書誌ID
- 8144340
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可