Seismic reflection profiles from the lower continental rise off Cape Hatteras illustrate the importance of cycle-to-cycle correlation in seismic stratigraphy. The reflection data reveal that horizons β and A are unconformities with truncations of 120 m or less in the study area. These unconformities probably result from erosion, which suggests that bottom currents were active as early as middle Cretaceous time. The reflection geometries and amplitudes also show that the seaward termination of reflector X may be a facies transition from the seaward-prograding rise sediments to abyssal plain turbidites.

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