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Is mount st helens explosive or nonexplosive?
Mount St. Helens is known for its explosive eruptions. In 1980, it erupted violently and produced a massive explosive eruption that caused significant devastation to the surrounding area. Subsequent eruptions have also been explosive in nature.
Where are the volcanoes that have both explosive and nonexplosive eruptions located?
1. The explosive volcanoes are found at points in the earth's crust that are weak. This means the pressure builds up and ash can burst out easily. Some examples are: - Mt. Vesuvius - Mt. Kilauea - Mt. St. Helens
Mt st helens volcano explosive or effusive?
Mt. St. Helens is known for its explosive eruption in 1980, characterized by ash clouds, pyroclastic flows, and lateral blasts. It is considered one of the most significant volcanic events in U.S. history.
Is mt st Helens a violent or nonviolent volcano?
Mount St Helens is violent.
What rock forms when Mount St Helens erupts?
Mt. St. Helens has erupted a very broad spectrum of igneous rocks. Primarily it is known as an explosive volcano meaning that it most commonly erupts Dacite, which has a high amount of silica present in the rock. However, throughout the geologic history of the volcano it has erupted everything from Basalt (very fluid, Hawaiian style) magma, to Rhyodacite (very sticky, explosive) style of magma. The silica content in a volcanoes magma supply primarily determines if the volcano will tend to have an explosive type of eruption or if it will tend to fountain lava. Mt. St. Helens having primarily Dacite tends to be a commonly more explosive volcano when it goes through its eruption periods. For a further detailed geologic history of Mt. St. Helens please see related links to the Geologic History of Mt. St. Helens as provided by the United States Geological Survey, Cascades Volcano Observatory.
Is mount st helens explosive or nonexplosive?
Mount St. Helens is known for its explosive eruptions. In 1980, it erupted violently and produced a massive explosive eruption that caused significant devastation to the surrounding area. Subsequent eruptions have also been explosive in nature.
What kind of eruption took place at mt st helens?
explosive
Where are the volcanoes that have both explosive and nonexplosive eruptions located?
1. The explosive volcanoes are found at points in the earth's crust that are weak. This means the pressure builds up and ash can burst out easily. Some examples are: - Mt. Vesuvius - Mt. Kilauea - Mt. St. Helens
Mt st helens volcano explosive or effusive?
Mt. St. Helens is known for its explosive eruption in 1980, characterized by ash clouds, pyroclastic flows, and lateral blasts. It is considered one of the most significant volcanic events in U.S. history.
Where was the explosion of mt st Helens?
At Mt. St. Helens.
What Volcano in the northwestern US?
Mt. St. Helens Mt. St. Helens
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.
What type of volcanoe is Mt St Helen?
Mount St. Helens is a stratovolcano, also known as a composite volcano. This type of volcano is characterized by its steep slopes and explosive eruptions due to a mixture of lava flows and pyroclastic material.
When was the first eruption of mt st helens?
Mt St Helens first erupted on May 18, 1980
Whice state is mount st Helens you?
Mt st. Helens is in Washington.
Where is Mt St Helenas?
mt. st. helens is in the state of Washington
Mountain Range home to Mt St Helens?
Mt. st. Helens is part of the High Cascade Range of mountains.
