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Are composite volcanoes predominantly erupting with lava flows?
Wiki User
∙ 11y ago
No. Composite volcanoes erupt mostly ash and pumice.
Wiki User
∙ 11y ago
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What materials does the composite volcano have after erupting?
Eruptions from composite volcanoes vary. Some eruptions will produce ash and pumice, some produce volcanic bombs, while still others produce lava flows.
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.
Why are there different shaped volcanoes?
Different shaped volcanoes occur because of the way the magma flows. Three types of volcanoes are shield, composite, and caldera.
What does a composite have to do with volcanoes?
Stratovolcanoes or composite volcanoes are tall conical mountains composed of lava flows and other ejecta in alternate layers, the strata that gives rise to the name. Stratovolcanoes are also known as composite volcanoes because they are created from multiple structures during different kinds of eruptions.
Does a composite volcano have an Aa type of lava?
A'a can occur at composite volcanoes, but block lava flows, which are far more viscous, are more common.
Pyroclasic materials from shield volcanoes?
Pyroclastic flows don't come from shield volcanoes. They come from cinder cone and sometimes composite volcanoes. Shield volcanoes only erupt runny lava.
What is the lava flow for a composite volcano?
Composite volcanoes are highly variable in how and what they erupt. In some cases composite volcanoes produce extremely viscous blocky lava flows of andesite or rhyolite. In other cases they may produce pahoehoe or a'a flows of basaltic lava. In many cases eruptions are explosive, producing clouds of ash and pyroclastic flows instead of lava flows.
Do shield or composite or cinder cone or caldera volcanoes have alternate layers of ash and lava?
Composite VolcanoesComposite Volcanoes. Composite volcanoes are tall, cone shaped mountains in which alternate layers of lava alternate with layers of ash. This happens when smooth lava flows alternate with explosive eruptions of lava fragments.
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 this correct pyroclastic flows from composite cone volcanoes are known as calderas?
No. They are simply called pyroclastic flows. A caldera is a depression formed in the ground when a volcano, usually a composite volcano, collapses as the magma chamber partially empties during an especially violent eruption.
Why are composite volcanoes steeply sloped?
It depends on viscosity of the lava. the runnier the lava, the farther it flows before solidifying, so it cannot pile up as fast.
What are the different types of volcanoe?
Volcanoes are grouped into four types: cinder cones, composite volcanoes, shield volcanoes and lava volcanoes. They are: Cinder Cones: They are circular or oval cones made up of small fragments of lava from a single vent. They have been blown into the air, cooled, and fallen around the vent. Composite: They are steel-sides and composed of many layers of volcanic rocks. Mt. Rainier and Mount St. Helens are examples of this type of volcano. Shield: Shaped like a bowl or shield in the middle, they have long gentle slopes made of basaltic lava flows. The volcanoes that formed the basalt of the Columbia Plateau were shield volcanoes. Lava Volcanoes: Deep sided mound formed by lava that is too thick to flow. The lava piles up near the vent.
