Where Do Volcanoes Form?

Answer

Volcanoes usually form deep within the earth when rock from the mantle melts and gathers enough pressure to move towards the surface. The force that brings the rock to the surface leads to an eruption that is often disruptive.
Q&A Related to "Where Do Volcanoes Form"
One of 40 active volcanoes in Alaska, 3,497-foot-tall Mt. Amukta overlies an ancient shield volcano and dominates the tiny Aleutian Island of Amukta. The Aleutian Islands are a volcanic
http://www.ehow.com/info_8631618_amukta-volcano-fo...
Volcanoes can be caused by mantle plumes. These so-called hotspots can occur far from plate boundaries. Hotspot volcanoes are also found elsewhere in the solar system, especially
http://wiki.answers.com/Q/What_causes_volcanoes_to...
The magma usually forms in the upper part of the mantle and travels upward to a magma chamber, where it is stored before erupting.
http://wiki.answers.com/Q/Where_does_magma_form_in...
Generally shield volcanoes form at divergent boundaries.
http://wiki.answers.com/Q/What_volcanoes_form_at_d...
2 Additional Answers
Ask.com Answer for: where do volcanoes form
Most of the 600-plus active volcanoes on Earth are associated with the boundaries of the tectonic plates.
They are especially common in subduction zones, which occur when one plate dips beneath another.
Volcanoes form around the edges of the Earth's plates. They are found in many places, but they also follow a pattern. An eruption or other volcanic activity happens when the plates shift, when there is a hot spot or when one plate lowers below another. You can find more information here: http://library.thinkquest.org/10136/volcano/volctq.htm
Explore this Topic
Volcanoes form when magma reaches the Earth's surface, causing eruptions of lava and ash. ...
Shield volcanoes are formed from many layers of running lava. It then forms a cone. The main Hawaiian islands are the tops of underwater shield volcanoes. ...
Cinder cone volcanoes form when high temperatures and pressure melt rock deep inside the Earth. Once a large amount of magma forms, it rises until it reaches the ...
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