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Geography

Which topographic consequence results from the subduction of an oceanic plate beneath a continental plate lacking sufficient sediment?

A)Formation of a deep ocean trench
B)Widespread shield volcano formation
C)Creation of a gently sloping coastal plain
D)Regional metamorphic rock formations

💡 Explanation

When a sediment-starved oceanic plate subducts under a continental plate, the lack of sediment to fill the depression leads to the formation of a deep ocean trench, directly related to the angle of subduction. A deep ocean trench results, rather than volcanic activity or coastal plain formation which require significantly different geological settings and sediment accumulation profiles.

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