Figure 7. Plan view of a hypothetical retrograde failed shelf margin during the sediment gravity flow phase. Channels (or valleys) on the shelf are sensitive to local surface gradients, and may follow the downthrown sides of faults. If the headwall area is uplifted, then channels will skirt this region, and this may be reflected in the distribution of channels and downslope equivalent slope fans. As sediment gravity flows accelerate down the headwall, current erosion is likely, but will be constrained by bottom irregularities such as remnant slump blocks and growth faults.