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Mount St. Helens eruptions are highly explosive due to the composition of its magma, which is typically high in silica. This high silica content increases the viscosity of the magma, trapping gases that build up pressure until they are released violently. Additionally, the geological setting of the volcano, situated at a convergent plate boundary, contributes to the accumulation of volatile materials that enhance the explosive potential during eruptions.
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What kind of volcano is mt st Helen's?
Mount St. Helens is a stratovolcano, also known as a composite volcano. Stratovolcanoes are characterized by their steep, symmetrical cones built up by layers of hardened lava, ash, and rocks. They are known for explosive eruptions due to the high viscosity of their lava.
The type of volcano formed from violent eruptions of a volcano?
A stratovolcano, also known as a composite volcano, is formed from violent eruptions characterized by explosive activity that ejects a mixture of lava, ash, and volcanic rocks. These eruptions are typically associated with high levels of gas pressure within the magma chamber, leading to explosive events.
Is Mt Rainier an explosive or a quiet eruption?
Mount Rainier is one of many volcanoes in the Cascade Mountain Range. It is one of the tallest mountains in North America, and it did not gain this topographic stature by frequently blowing its top as Mount St. Helens did in 1980 or Mount Mazama did around 5677 B.C. creating Crater Lake; its tall stature would seem to indicate most of its eruptions have been "mountain-building" -- creating new rock from lava flows. However, Mount St. Helens and Mount Mazama are also both part of the same Cascade volcanic mountain range as Mount Rainier, so a mountain-destroying eruption similar to the St. Helens or even Mazama blasts (the latter, obvious by means of its more complete self-destruction, much stronger) is definitely possible. Even a mountain-building eruption, however, is likely to be rife with explosive phases, especially toward the beginning as it would 'clear the pipes.' Mount Rainier erupted as many as 6 times in the 1800s, but -- aside from tremors -- was quiet throughout the 20th century and, thus far, the 21st century. European explorers and settlers documented very noticeable volcanic plumes from Rainier during the 1800s. Relative to Mount St. Helens, Rainier is an older and taller mountain (and has more glacial volume and mass than St. Helens did even prior to its 1980 eruption), and many more people live within range of Rainier and the rivers that flow from its glaciers (susceptible to lahars and pyroclastic flows) than St. Helens. It is generally not believed that an eruption from Mount Rainier -- as with any Cascade volcano -- would not be as smooth and quiet as some of Hawaii's volcanoes, but there do seem to be more mountain-building eruptions (adding lava) than mountain-destroying eruptions (destroying the cone and leaving a crater).
What type of eruption does MtFuji produce?
It is a composite volcano, so the kind of eruptions it has is explosive.
What are some volcanos?
dear person,I'm so sorry if this answer is wrong but here are some volcano's. there are Hawaii Volcano, Washington Volcano in 1980 and that's all i know
What kind of volcano is mt st Helen's?
Mount St. Helens is a stratovolcano, also known as a composite volcano. Stratovolcanoes are characterized by their steep, symmetrical cones built up by layers of hardened lava, ash, and rocks. They are known for explosive eruptions due to the high viscosity of their lava.
What made mt st Helens so explosive?
Mount Saint Helens' magma/lava composition is different to many volcanoes and is about 64%silica and 4% water.
Why do the volcanoes in Japan have explosive eruptions?
Volcanoes in Japan have explosive eruptions because there is a a magma chamber that has not completely move along the mantle yet so when it erupts it has explosive eruptions.
The type of volcano formed from violent eruptions of a volcano?
A stratovolcano, also known as a composite volcano, is formed from violent eruptions characterized by explosive activity that ejects a mixture of lava, ash, and volcanic rocks. These eruptions are typically associated with high levels of gas pressure within the magma chamber, leading to explosive events.
Is Mt Rainier an explosive or a quiet eruption?
Mount Rainier is one of many volcanoes in the Cascade Mountain Range. It is one of the tallest mountains in North America, and it did not gain this topographic stature by frequently blowing its top as Mount St. Helens did in 1980 or Mount Mazama did around 5677 B.C. creating Crater Lake; its tall stature would seem to indicate most of its eruptions have been "mountain-building" -- creating new rock from lava flows. However, Mount St. Helens and Mount Mazama are also both part of the same Cascade volcanic mountain range as Mount Rainier, so a mountain-destroying eruption similar to the St. Helens or even Mazama blasts (the latter, obvious by means of its more complete self-destruction, much stronger) is definitely possible. Even a mountain-building eruption, however, is likely to be rife with explosive phases, especially toward the beginning as it would 'clear the pipes.' Mount Rainier erupted as many as 6 times in the 1800s, but -- aside from tremors -- was quiet throughout the 20th century and, thus far, the 21st century. European explorers and settlers documented very noticeable volcanic plumes from Rainier during the 1800s. Relative to Mount St. Helens, Rainier is an older and taller mountain (and has more glacial volume and mass than St. Helens did even prior to its 1980 eruption), and many more people live within range of Rainier and the rivers that flow from its glaciers (susceptible to lahars and pyroclastic flows) than St. Helens. It is generally not believed that an eruption from Mount Rainier -- as with any Cascade volcano -- would not be as smooth and quiet as some of Hawaii's volcanoes, but there do seem to be more mountain-building eruptions (adding lava) than mountain-destroying eruptions (destroying the cone and leaving a crater).
What type of eruption does MtFuji produce?
It is a composite volcano, so the kind of eruptions it has is explosive.
Why was Mount Saint Helens eruption so famous?
use it
How many eruptions on average does mt saint helens have per year?
Mt. St. Helens does not have eruptions on a yearly basis. It is an active volcano, so the frequency and size of eruptions can vary. Since its catastrophic eruption in 1980, there have been smaller eruptions in subsequent years, but there is no fixed average number of eruptions per year.
Is Mount saint helens a volcano?
yes, it is and so called deadly.
What are some volcanos?
dear person,I'm so sorry if this answer is wrong but here are some volcano's. there are Hawaii Volcano, Washington Volcano in 1980 and that's all i know
Why is Mt St Helens eruption so well known?
Because I think it was one of the biggest eruptions.
Is mount st. Helen's active?
Mount St. Helens is geologically young compared with the other major Cascade volcanoes. It formed only within the past 40,000 years, and the pre-1980 summit cone began rising about 2,200 years ago. The volcano is considered the most active in the Cascades within the Holocene epoch (the last 10,000 or so years).
