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<p>zone (one plate moving underneath the other) or a <a href="page.php?w=continental_collision">continental collision</a>. <br/>
:Subduction zones are of two types: ocean-to-continent subduction, where the dense oceanic lithosphere plunges beneath the less dense continent, or ocean-to-ocean subduction where older, cooler, denser oceanic crust slips beneath less dense oceanic crust. Deep marine trenches are typically associated with subduction zones, and the basins that develop along the active boundary are often called "foreland basins". <br/>
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