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カナダ · 火砕丘

フードゥー山

Hoodoo Mountain

タイプ
火砕丘
標高
1850m
最終噴火
-7050年
フードゥー山
写真: Here fishy · CC BY-SA 3.0 · Wikimedia Commons
タイプ
火砕丘
国
カナダ
地域
北アメリカ / Northern Cordilleran Volcanic Province
標高
1850m
座標
56.780, -131.280
最終噴火
-7050年
テクトニクス環境
プレート内部 / 大陸地殻 (> 25 km)
火山地形
小規模
主要岩石
響岩
地質学的概要

Hoodoo Mountain is a flat-topped Pleistocene-to-Holocene volcano in the Boundary Ranges of NW British Columbia near the Alaska border that is composed of both subglacial and subaerial volcanic products. Valley glaciers surround the volcano on all except the south side. The Pleistocene Little Bear Mountain basaltic tuya adjoins Hoodoo Mountain on the immediate north. Most of the volcano formed beneath glacial ice; all flank flows appear to have originated from beneath the current 4-km-wide summit icecap. More than 90% of the volcano, which dates back to at least 100,000 years, consists of interlayered peralkaline phonolitic and trachytic lava flows and hyaloclastites. At least one subaerial explosive eruption produced a welded and unwelded ignimbrite sequence on the north side. The most recent stage of volcanic activity produced subaerial unglaciated lava flows with well-preserved lava channels that originated from summit and flank vents about 9,000 years ago.

Wikipedia の要約

英語版の要約

Hoodoo Mountain, sometimes referred to as Hoodoo Volcano, is a potentially active stratovolcano in the Northern Interior of British Columbia, Canada. It is located 25 kilometres northeast of the Alaska–British Columbia border on the north side of the Iskut River opposite of the mouth of the Craig River. With a summit elevation of 1,850 metres and a topographic prominence of 900 m (3,000 ft), Hoodoo Mountain is one of many prominent peaks within the Boundary Ranges of the Coast Mountains. Its flat-topped summit is covered by an ice cap more than 100 m (330 ft) thick and at least 3 km (1.9 mi) in diameter. Two valley glaciers surrounding the northwestern and northeastern sides of the mountain have retreated significantly over the last hundred years. They both originate from a large icefield to the north and are the sources of two meltwater streams. These streams flow along the western and eastern sides of the volcano before draining into the Iskut River.

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噴火履歴

1件の記録用語集
概要 (VEI時系列)
バーをクリックすると個別の噴火が表示されます · 矢印キーで棒を移動、Enterで表示
紀元前 7050~紀元前 7050 · 1件 · 最大 VEI 0紀元前 7050紀元前 7050紀元前 7049紀元前 7049紀元前 7049

詳細タイムライン

  1. 紀元前 7050年VEI 0地質学的推定
    紀元前 7050 ~ 終了日不明

近くの火山

外部リンク

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