Profile B-B’ exhibits similar fluctuations to the karst surface, with another incised channel taking shape (brown and orange lines) before being obscured by noise in the record. The truncation surface and subsequent depositional event represented by the solid red lines in profile A-A’ are not as readily apparent. It is possible that the orange lines in profile B-B’ may be correlative with this depositional event. The more recent hiatus (dark blue line) and overlying fluvial deposits are consistent in both profiles. The relationship of these incised channels to subsidence in the underlying geology is probably geomorphologic; channel development occurred within previously existing depressions and was not necessarily concurrent to karst development.

The shape of the channel incisions and the nature of their fill are similar to buried incised channels observed in seismic profiles acquired from the nearshore shelf environments of the Gulf and Atlantic coasts. The feature outlined in profile C-C’ is characteristic of karst-type subsidence rather than a fluvial incision. Again the deepest red reflection may be correlative to the top of the Ocala Limestone, the overlying reflections may represent subsequent subsidence in the sediments of the Hawthorn Group. Reflections exhibit subsidence up to the near-surface, suggesting the karst feature in this profile post-dates the fluvial deposition shown in the previous two profiles. The uppermost subsurface reflections (dark blue line) is again overlain by high frequency, parallel reflections which may be representative of recent fluvial deposition.