the locations of volcanoes

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paul.fr

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the locations of volcanoes
« on: 12/10/2007 23:34:02 »
I heard that most volcanoes are located on the edges of the continents, is this true? and why should that be?

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Offline Bass

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the locations of volcanoes
« Reply #1 on: 12/10/2007 23:56:16 »
Most (but certainly not all) land volcanoes are caused by subduction of oceanic plates beneath continental plates or island arcs- and subduction zones are located along the edges of the continents.  In terms of volume of volcanic material erupted, there are probably more volcanoes located along the mid-oceanic ridges, deep in the oceans.
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Offline JimBob

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the locations of volcanoes
« Reply #2 on: 13/10/2007 20:44:13 »
The other place where volcanoes are found besides the edge of land masses, is in areas where there are large shear faulting and, in the local area here in Texas, along the Cretaceous hinge-line of the east Texas-Gulf Coast basin
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