destructive margin

A Dictionary of Earth Sciences | 1999 | 356 words | Copyright

destructive margin The contact between two lithospheric plates which are moving towards each other and where oceanic crust is being destroyed by subduction. Destructive margins, a type of convergent margin, are marked by shallow-to deep-focus earthquakes and typically andesitic volcanicity, and most are also marked by an oceanic trench. See PLATE MARGIN.

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AILSA ALLABY and MICHAEL ALLABY. "destructive margin." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 28 May. 2012 <http://www.encyclopedia.com>.

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