Subduction Zone 06
Subduction Zone 06 : An extended region along which one crustal block descends relative to another, and along which deep oceanic trenches occur. Subduction zones are one of three kinds of boundaries See: Mid-Oceanic Ridges; Transform Faults) Of Crust Plates. During the tectonic process of two plates moving toward each other, one dips downward and is forced under the edge of the other, penetrating the earth's mantle at a rather sharp angle. The bend in the submerging plate creates an ocean trench. The downward action of this plate is responsible for deep-focus earthquake activity, and the resultant friction produces volcanoes and intrusions on the far side of the trench. Shallow focus earthquakes along subduction zones have been responsible for the generation of most destructive tsunamis in history. See also: plate tectonics
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