Composite volcanoes can contain a wide variaty of magmas ranging from basaltic to rhyolitic.
The average composition of magma in a composite volcano is andesitic. Composite volcanoes are highly variable though. They can erupt anything from basalt to rhyolite.
magma rock is an igneous
The most explosive type of volcano, which is the type that has water, is called a boiler volcano. All active volcanoes have magma, and emit carbon dioxide. Magma can contain silica.
Composite volcanoes can contain virtually any kind of magma ranging from basaltic to rhyolitic. Andesitic magma is the most common. One stratovolcano contains unique carbonatite magma, which is unlike the magma of any other volcano in the world.
Mt. St. Helens is considered a composite or Strato-Volcano due to the type of magma it erupts. The volcano is primarily composed of Andesite, a medium consistency magma. This medium viscosity magma makes it possible for both explosive and docile eruptions from the volcano. Although everyone remembers the May 18, 1980 explosive eruption, there is also much geologic evidence to support non-explosive lava extrusion type eruptions. However, due to the magma type that the volcano is primarily composed of, it is classified as a composite volcano with the typical steep sides, and potential for very explosive eruptions.
The average composition of magma in a composite volcano is andesitic. Composite volcanoes are highly variable though. They can erupt anything from basalt to rhyolite.
magma rock is an igneous
Onepoto is a Composite Volcano. This is due to it's basalt makeup and runny magma.
The most explosive type of volcano, which is the type that has water, is called a boiler volcano. All active volcanoes have magma, and emit carbon dioxide. Magma can contain silica.
Magma
The type of mountain where magma breaks the surface is a volcano. Their are three types of volcanos, composite, shield, and cinder cones.
Composite volcanoes can contain virtually any kind of magma ranging from basaltic to rhyolitic. Andesitic magma is the most common. One stratovolcano contains unique carbonatite magma, which is unlike the magma of any other volcano in the world.
Exploding magma
Mt. St. Helens is considered a composite or Strato-Volcano due to the type of magma it erupts. The volcano is primarily composed of Andesite, a medium consistency magma. This medium viscosity magma makes it possible for both explosive and docile eruptions from the volcano. Although everyone remembers the May 18, 1980 explosive eruption, there is also much geologic evidence to support non-explosive lava extrusion type eruptions. However, due to the magma type that the volcano is primarily composed of, it is classified as a composite volcano with the typical steep sides, and potential for very explosive eruptions.
Stratovolcano (a composite volcano)
Stromboli is a strato-volcano (composite volcano).
composite volcano