Figure
5. Plan view of a hypothetical retrograde failed shelf margin immediately
following the collapse phase. The headwall is arcuate, and isolated slump blocks
litter the collapse unconformity on the left. On the right, strata were torn
apart from the headwall, but did not continue to slide into the basin. The
rollover is largely postdepositional. A schematic dip line through this region
is shown in Figure
6.
Where the slab joins the headwall, rate of translation is lower, and a typical
growth fault situation is attained.