Figure 5. Vertical seismic section from 3-D survey parallel to 2-D seismic section of Figure 4. The top of the Clark and Wilson Sandstone (C&W) has a strong trough (red) amplitude anomaly. There is a “reflict” amplitude anomaly near the downdip edge of the original gas-water contact (GW). There is no amplitude anomaly associated with the “new” gas-water contact (NG/W).