アメリカ合衆国 · 成層火山
デニソン山
Denison
- タイプ
- 成層火山
- 標高
- 2287m
- 最終噴火
- 不明
- タイプ
- 成層火山
- 国
- アメリカ合衆国
- 地域
- 北アメリカ / Alaska Peninsula Volcanic Arc
- 標高
- 2287m
- 座標
- 58.418, -154.449
- 最終噴火
- 不明
- テクトニクス環境
- 沈み込み帯 / 大陸地殻 (> 25 km)
- 火山地形
- 複成火山
- 主要岩石
- 安山岩 / 玄武岩質安山岩
地質学的概要
Mount Denison lies near the head of the Serpent Tongue, Hook, and Hallo glaciers NE of Snowy volcano. This poorly known section of Katmai National Park contains a line of four closely spaced and mostly ice-covered volcanic peaks. Denison lies at the SW end of this chain, which also includes Steller, Kukak, and Devils Desk volcanoes. Orientation of lava flows and a thick cross-bedded tephra deposit suggest that a vent is located near Mount Denison (Swanson, in Wood and Kienle 1990). The precise age of the most recent activity at Denison is not known.
Wikipedia の要約
英語版の要約Mount Denison is a stratovolcano and one of the highest peaks on the Alaska Peninsula. Discovered in 1923 by Harvard professor Kirtley Fletcher Mather, the mountain was named for the geologist's alma mater, Denison University. The mountain's connection to Denison also include its first climbers: all members of the first two ascent teams as well as the group that attempted in 1977 were either students, alumni, or faculty of the university.
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