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Composite volcanoes have andesitic magma, which is high in silica content and therefore, thick and gooey. Chunks of this sticky magma cool at the top of the volcano to form a sealed cap... this magma beneath the cap builds up pressure. Eventually, the pressure gets so large from beneath the cap that all the magma explodes out from the top of the volcano shooting hundreds of miles in all directions... The gas and ash from the explosion also come hurtling down the sides of the volcano in a fatal cloud called a Pyroclastic flow; these deadly flows of molten rock and burning ash have killed many.
Shield volcanoes, on the other hand, are very gentle. The magma is far more runny and trickles out of the top rather than exploding.
Therefore, composite volcanoes are more explosive...
What else can I help you with?
Does the composite volcano have high viscosity?
Composite volcanoes typically have higher viscosity lava compared to shield volcanoes, resulting in more explosive eruptions. The high silica content in the magma of composite volcanoes contributes to this higher viscosity. However, the exact viscosity of the lava can vary depending on specific factors such as temperature and gas content.
Compere shield volcanoes and composite volcanoes?
Shield volcanoes are lower in elevation and usually not exposive, such as Kilauea, which has been constantly 'erupting' since the 80s. Composite volcanoes (aka stratovolcano) are large, usually somewhat cone shaped and appear dormant/extinct until an explosive eruption. Examples are Krakatoa (awesome example), Vesuvius, Pinatubo, Rainier, St Helens and many more. Shield volcanoes typically occur on mid-oceanic 'hot spots' while composites/stratovolcanoes occur on tectonic plate boundaries. The "ring of fire" around the pacific plate has many strato/composite volcanoes and Hawaii's Kilauea is in the center on a 'hot spot' *Skylla*
Do composite volcanoes have viscous lava?
Volcanoes are named after the lava that comes out.viscous volcanoes (or acid and dome) are the same thing.the lava comes to the surface close to subduction zones,which are found at convergent plate boundaries.it is high in silica content and does not flow easily.it contains gas which cannot escape easily,so eruptions may be explosive and violent.eg Caribbean volcanoes
Do composite cone volcanoes have mafic lava?
They can. Composite volcanoes vary in what they erupt. Many composite volcanoes are composed of a mixture of mafic, felsic, and intermediate rock. However, in most cases intermediated or felsic rock predominates.
Compare shield volcanoes to composite volcanoes?
A shield volcano is made from lava flows that flow far, making a very wide, not very steep mountain. A cinder cone volcano is the most common type of volcano. It is formed from volcanic fragments and is very steep sided, although not always extremely tall. They usually have just one main vent, and can also sometimes form from a vent of a larger volcano, growing and becoming a whole new volcano. Composite volcanoes resemble very large cinder cone volcanoes at first, but have bigger particles making them up usually and also have multiple vents more often. They also are potentially more explosive.
What is the difference between a composite and shield a Volcano?
Shield Volcanoes erupt less violently and flows further then composite volcanoes. A composite volcano erupts more violently.
Does the composite volcano have high viscosity?
Composite volcanoes typically have higher viscosity lava compared to shield volcanoes, resulting in more explosive eruptions. The high silica content in the magma of composite volcanoes contributes to this higher viscosity. However, the exact viscosity of the lava can vary depending on specific factors such as temperature and gas content.
What is the difference between shield volcano and composite volcanoes?
A shield volcano is made from lava flows that flow far, making a very wide, not very steep mountain. A cinder cone volcano is the most common type of volcano. It is formed from volcanic fragments and is very steep sided, although not always extremely tall. They usually have just one main vent, and can also sometimes form from a vent of a larger volcano, growing and becoming a whole new volcano. Composite volcanoes resemble very large cinder cone volcanoes at first, but have bigger particles making them up usually and also have multiple vents more often. They also are potentially more explosive.
Compere shield volcanoes and composite volcanoes?
Shield volcanoes are lower in elevation and usually not exposive, such as Kilauea, which has been constantly 'erupting' since the 80s. Composite volcanoes (aka stratovolcano) are large, usually somewhat cone shaped and appear dormant/extinct until an explosive eruption. Examples are Krakatoa (awesome example), Vesuvius, Pinatubo, Rainier, St Helens and many more. Shield volcanoes typically occur on mid-oceanic 'hot spots' while composites/stratovolcanoes occur on tectonic plate boundaries. The "ring of fire" around the pacific plate has many strato/composite volcanoes and Hawaii's Kilauea is in the center on a 'hot spot' *Skylla*
Do composite volcanoes have viscous lava?
Volcanoes are named after the lava that comes out.viscous volcanoes (or acid and dome) are the same thing.the lava comes to the surface close to subduction zones,which are found at convergent plate boundaries.it is high in silica content and does not flow easily.it contains gas which cannot escape easily,so eruptions may be explosive and violent.eg Caribbean volcanoes
Do composite cone volcanoes have mafic lava?
They can. Composite volcanoes vary in what they erupt. Many composite volcanoes are composed of a mixture of mafic, felsic, and intermediate rock. However, in most cases intermediated or felsic rock predominates.
Compare shield volcanoes to composite volcanoes?
A shield volcano is made from lava flows that flow far, making a very wide, not very steep mountain. A cinder cone volcano is the most common type of volcano. It is formed from volcanic fragments and is very steep sided, although not always extremely tall. They usually have just one main vent, and can also sometimes form from a vent of a larger volcano, growing and becoming a whole new volcano. Composite volcanoes resemble very large cinder cone volcanoes at first, but have bigger particles making them up usually and also have multiple vents more often. They also are potentially more explosive.
Is composite volcano lava viscous or fluid?
Composite volcanoes typically erupt with lava that is more viscous, meaning it is thicker and flows more slowly compared to lava from shield volcanoes. This viscosity can lead to more explosive eruptions as gas bubbles are trapped in the magma, causing pressure to build up until it is released in a violent eruption.
Did AA lava form composite volcanoes?
No, composite volcanoes are typically formed from explosive eruptions caused by viscous lava containing high amounts of silica. A'a lava, on the other hand, is characterized by its rough and blocky texture and typically forms shield volcanoes or cinder cones.
Composite volcanoes such as Mount Rainier in Washington are formed from what type of lava?
Composite volcanoes are primarily formed from andesitic lava, which is thicker and more viscous than basaltic lava. This leads to a build-up of pressure and explosive eruptions, creating the classic cone shape of composite volcanoes.
Does a composite volcano have silica?
Yes it is high in silica because composite volcanoes are known for being explosive. Composite volcanoes, sometimes referred to as stratovolcanoes, one of Earth's most common type.They form by explosive eruptions of pyroclastic material followed by quieter outpourings of lava. This usually indicates high silica content. High silica makes for thicker magma that can clog up the vent from the volcanoe's last eruption. Which makes the next eruption far more explosive because the magma has to free its self out of the vent, and with tremendous force it succeeds sky rocketing billions of pieces of pyroclastic material out of its vent. (this is known as an explosive eruption.)
What kind of lava do Composite Volcanoes have?
Composite volcanoes, also known as stratovolcanoes, typically have more viscous lava compared to shield volcanoes. This lava is comprised of a mixture of gas-rich, acidic magma and silica, which makes it thicker and more prone to explosive eruptions.
