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Volcans dans l'État de Washington (12)

Glacier Peak | Goat Rocks | Indian Heaven | Marble Mountain | Mount Adams | Mount Baker | Mount Rainier | Mount St. Helens | Signal Peak | Simcoe | Tumac Mountain | West Crater
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Volcano list

Glacier Peak

(stratovolcan 3213 m / 10,541 ft)
Glacier Peak is a stratovolcano in northern Washington and the most remote of the Cascade volcanoes. Its name comes from the 11 glaciers on its flanks.
Although it reaches more than 10,000 feet elevation, the volcanic edifice is only 500-1000 m high, because the volcano's b... [informations]

Goat Rocks

(stratovolcan 2494 m / 8,182 ft)
Goat Rocks is the center a deeply eroded, glaciated volcanic center of a volcanic field 30 km (18 miles) north of Mount Adams, Washnington, USA. [informations]

Indian Heaven

(shield volcanoes 1806 m / 5,925 ft)
Indian Heaven volcano is a volcanic field 30 km halfway between Mt St. Helens and Mount Adams volcano, Washington, USA. It contains several low overlapping basaltic shield volcanoes and more than 50 flank vents with spatter cones primarily oriented along a N-S line.
The you... [informations]

Marble Mountain

(Shield 1255 m / 4117 ft)
[informations]

Mount Adams

(stratovolcan 3742 m / 12,277 ft)
Mt Adams stratovolcano 50 km east of Mt St Helens volcano is the by volume second largest volcano of the Cascades Range, after Mt. Shasta.
Mount Adams is the center of a 200 km3 volcanic field. The andesitic-dacitic volcano was built by several overlapping cones. It is elon... [informations]

Mount Baker

(stratovolcan 3285 m / 10,777 ft)
Mt Baker 50 km east of Bellingham, Washington, is the northernmost of Washington's volcanoes and one of the lesser known ones in the Cascade Range.
Mt Baker Volcano has been very active during the last centuries, but has been in repose now for more than 130 years.
Ear... [informations]

Mount Rainier

(stratovolcan 4329 m / 14,409 ft)
Mount Rainier, the highest peak in the Cascade Range, is located 87 km SE of Seattle and forms a majestic backdrop to the landscape of the region. The volcano is covered by 26 main glaciers, and melting of glacial ice by a future eruption causing lahars are a significant hazard f... [informations]

Mount St. Helens

(stratovolcan 2549 m / 8,363 ft)
Mount St Helens volcano hardly needs introduction. In its spectacular eruption in 1980, it placed itself deep into collective memory, in particular within the NW states of the USA. Prior to this eruption and its gradual reawakening, little attention had been given to the volcanic... [informations]

Signal Peak

(volcan bouclier 1555 m / 5,102 ft)
Signal Peak is the eroded remnant of a small andesitic stratovolcano overlying the southern part of the basaltic shield of the Lincoln Plateau.
Together with still active Mount Adams volcano to the west and the older Simcoe volcanic field of cinder cones to the east, it is ... [informations]

Simcoe

(champ volcanique )
Simco volcanic field is a N-S aligned cluster of 24 monogenetic cinder cones. It is located E and SE of Mt Adams, Washington, California, near the town of Goldendale.
Associated is the younger basaltic Lincoln Plateau with Signal Peak at the western end of the field and ea... [informations]

Tumac Mountain

(Pyroclastic cone 1932 m / 6339 ft)
[informations]

West Crater

(champ volcanique 1329 m / 4,360 ft)
West Crater volcano is a small andesitic lava dome with lava flows in southern Washington, belonging to a volcanic field extending from Marble Mountain, north of Swift Reservoir, to south of Trout Creek Hill. The field consists mainly of small basaltic and basaltic andesite cinde... [informations]
Volcano news
mar., 10 mai 2016, 11:03

Mt. St. Helens volcano (Washington): small earthquake swarms no signs of worries

Earthquakes under Mount St. Helens volcano during 1988-2016; magmatic recharge swarms are marked, along with the most recent earthquake swarm. (image: USGS / Cascade Volcano Observatory via Eruptions Blog)
Since the beginning of 2016, a swarm of small earthquakes has been occurring at under the volcano, suggesting that another phase of magma recharge is currently taking place. ... Read all
sam., 20 avril 2013, 08:25

Mount St. Helens volcano (Washington, USA (mainland exept Alaska)) activity update

(Very) tiny earthquakes occur regularly at the volcano, but nothing suggests anything unusual going on at the volcano for the moment. ... Read all
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