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"
at fault lines, or places of crustal activity : Volcanoes usually form near plate boundaries where subduction is occurring. This causes magma from the mantle to rise up onto Earth's
http://wiki.answers.com/Q/Where_do_volcanoes_form
Volcanoes form in areas where there is a shift in the Earth's plate...
http://www.chacha.com/question/where-do-volcano's-...
The surface of the planet is covered in a thin layer of crust. This crust has fractured into large pieces, called tectonic plates. The plates move atop the molten magma of the earth's
http://www.ehow.com/info_8780472_do-along-edge-tec...
It's not as straight forward as this question suggests. Each of the volcano types listed can be matched with more than one plate setting. Composite volcanoes generally form at convergent
https://answers.yahoo.com/question/index?qid=20090...
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
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