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Mt. Saint Helens is a composite volcano. Composite volcanoes are formed by some alternating layers of tephra (rock debris thrown into the air by volcanic eruptions) and lava. Composite volcanoes usually erupt violently and are large and steep-sided.
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∙ 13y ago
Wiki User
∙ 12y agoMt. St. Helen is considered a cinder cone volcano.
Wiki User
∙ 13y agoActive stratovolcano or composite volcano
Wiki User
∙ 14y agoit is still considered active
Wiki User
∙ 12y agoit is a stratovolcano
Wiki User
∙ 14y agoComposite cone
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What type of valcano is mt st Helens?
Mount St Helens is a composite cone (strato) volcano.
What kind mountain is mount st Helens?
Mount St. Helens consists of lava rock interlayered with ash, pumice and deposits, together with layers of basalt and andesite.
What type of eruptions does mount st Helens do?
Like most stratovolcanoes, Mount St Helens alternates between explosive and effusive eruptions.
What type of tectonic plates does mount st helens have?
On a continental plate. Mount Saint Helens is on a convergent plate boundary. The Juan de Fuca plate is being pushed under the North American Plate.
What type of plate boundary caused Mount St Helens?
The cause of Mt. St. Helens' volcanism is due to the subduction melting of the Pacific Plate as it subducts under the North American Plate, located along a convergent plate boundary or fault. No, Mount Saint Helens is not on a hot spot, nor is it on a fault. Mount Saint Helens is part island arc volcanic chain (the Casade Mountaind) due to the subduction of the Pacific Plate under the North American Craton. NOTE: The Farallon Plate is no longer here; it ceased to exist with the end of the Laramide Orogeny some 30 million years ago. The remnants of the Farallon Plate are the Juan de Fuca Plate of British Columbia and northwestern Washington State, and the Cocos Plate of southwestern Mexico. Neither of these microplates has any effect on Mount Saint Helens, which is in southwestern Washington. I found this answer on answers.yahoo.com
What type of valcano is mt st Helens?
Mount St Helens is a composite cone (strato) volcano.
What type of eruption does mount saint helens have?
a pyroclastic flow
What type of volcanoe is mount saint helens?
A composite volcano.
Has there ever been any type of life living on Mount Saint Helens?
Yes. Forests grew on portions of the slopes of Mount St. Helens but were wiped out by the 1980 eruption. Some life has returned to the lower slopes.
What type of landform is mount st helens?
Volcano
What type of mountain is mount st helens)?
Volcano.
What kind mountain is mount st Helens?
Mount St. Helens consists of lava rock interlayered with ash, pumice and deposits, together with layers of basalt and andesite.
What type of eruptions does mount st Helens do?
Like most stratovolcanoes, Mount St Helens alternates between explosive and effusive eruptions.
What type of tectonic plates does mount st helens have?
On a continental plate. Mount Saint Helens is on a convergent plate boundary. The Juan de Fuca plate is being pushed under the North American Plate.
What type is mount st helens?
It's an active stratovolcano
What type of volcano is it mount Helen?
Mt.St. Helens Is a stratovolcano.
What type of plate boundary is Mount St. Helens?
subduction
