U.S. Geological Survey Open-File Report 03-040
Figure 16C

Figure 16C.  Incision model for deposition of shoreface sand within transgressive systems tract in sequence set K2. C.  Segment of USGS seismic line R-9 illustrating feature interpreted to be incision in upper part of sequence set K2 in eastern NPRA.  Features such as this may be petroleum prospects if reservoir-quality sandstone is present within the incision and if the sandstone is adequately sealed by condensed mudstones.  An additional example of a possible incision in this play is illustrated in Fig. 25.  Model modified from Houseknecht (2002).