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.
Mt. St. Helen is considered a cinder cone volcano.
Active stratovolcano or composite volcano
it is still considered active
it is a stratovolcano
Composite cone
Mount St Helens is a composite cone (strato) volcano.
Mount St. Helens consists of lava rock interlayered with ash, pumice and deposits, together with layers of basalt and andesite.
Like most stratovolcanoes, Mount St Helens alternates between explosive and effusive eruptions.
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.
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
Mount St Helens is a composite cone (strato) volcano.
a pyroclastic flow
A composite volcano.
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.
Volcano.
Volcano
Mount St. Helens consists of lava rock interlayered with ash, pumice and deposits, together with layers of basalt and andesite.
Like most stratovolcanoes, Mount St Helens alternates between explosive and effusive eruptions.
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.
It's an active stratovolcano
Mt.St. Helens Is a stratovolcano.
subduction