FIGURE 8. Forward seismic model for medial fan sheets from the Ross Formation built using GXII seismic modeling software. (A) Outcrop photo of the layered sheets, which dominate the medial fan deposits of the Ross Formation at Loophead (Figure 7). (B) Depth model constructed for this outcrop by applying subsurface rock properties (density and velocity) from deep-water reservoirs in the Gulf of Mexico to the digitized interpretation of this outcrop. Also shown in overlay is a detailed measured section for this outcrop. (C) The high net sandstone section at the top of the outcrop can only be fully resolved on the seismic model generated using a 60-Hz wavelet. At this higher frequency, this interval is also acoustically transparent because of the high percentage of sandstone and resulting lack of internal reflectivity. (D) On the forward seismic model generated using a 30-Hz frequency wavelet, the upper sandstone-prone interval has a high-amplitude continuous seismic response, whereas the lower package has a low-amplitude continuous response (modified from Sullivan et al., 2000b).