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Which outcome occurs when sediments compacting on an oceanic plate get dragged down during subduction?

A)Formation of an accretionary wedge
B)Increased mantle plume upwelling
C)Rift valley formation on overriding plate
D)Decreased volcanic arc activity

💡 Explanation

An accretionary wedge forms because the increased pressure and friction during subduction cause sediments to shear off the descending plate via a process known as offscraping; therefore, the wedge builds on the overriding plate, rather than causing volcanism.

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