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Figure 2. a. Geologic model (strike section) of the Smackover Formation at the Appleton Field. Porous bindstones and boundstones in the lower part of the Smackover developed preferentially over exposed basement ridges, whereas the upper part of the formation is essentially nonporous. The Smackover is typically non-porous throughout its entire thickness away from the ridges. The siliciclastic Norphlet Formation laps onto the flanks of the ridge beneath the Smackover. The Buckner Anhydrite overlies the Smackover, and thins over the ridge crest. A thick siliciclastic section of the Haynesville Formation caps the zone of interest. b. Seismic model of the Appleton Field made by convolving the geologic model with a zero phase 25 Hz Ricker wavelet. 2c. Arbitrary line through the 3-D seismic data so as to correspond approximately to the geologic cross-section in Figure 2a.