Dip line 331 shows the reflection-free to sub-parallel reflector character of Tst 1B on the middle shelf.
Strike-oriented seismic line 16ab illustrates that the most conspicuous localized surface of fluvial erosion is not always the sequence boundary. In this case, the stage 2 sequence boundary (sb2), which was mapped on a regional scale, is amalgamated with the transgressive surface (ts) and this surface is the downlap surface for a transgressive delta (TST-1) that was incised by distributary channels as the delta prograded across the shelf.
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