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← GeographyWhich consequence results when longshore drift encounters a deepwater submarine canyon?
A)Increased sediment plume turbidity✓
B)Creation of a tombolo feature
C)Accelerated coastal dune formation
D)Stabilization of existing barrier islands
💡 Explanation
Sediment transported by longshore drift is funneled into canyons because gravity-driven turbidity currents form and increase off-shelf sediment transport; therefore, increased sediment plume turbidity occurs at the canyon’s mouth, rather than tombolo formation which require wave refraction on nearshore islands.
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