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← GeographyWhich phenomenon results from sustained oceanic plate subduction?
A)Formation of accretionary wedge structures✓
B)Decreased frequency of deep-sea trenches
C)Stabilization of continental plate thickness
D)Increased homogeneity in mantle composition
💡 Explanation
An accretionary wedge forms where sediments are scraped off a descending oceanic plate via subduction; this sediment accumulation then melds to the overriding plate, because ongoing tectonic compression compacts everything together forming wedge shapes, therefore accretionary wedge structures are created, rather than deeper trenches or homogenizing mantle features.
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