Two private entities have permitted Tuscaloosa Marine Shale wells, expanding the limits of the play up-dip. Justiss has wells permitted targeting the shale at approximately 10,000 feet (TVD) & Indigo has permitted three well ranging in True Vertical Depths from 10,000 to 12,500 feet. The Gamma Log posted a few post ago shows the Tuscaloosa Marine Shale starting at 11830 ft (TVD). If this Trend grows only slightly toward the East (which would be the most likely direction of expansion), then the value of MNLU/AEXP's leases might increase due to shallower, moor easily accessed pay horizons.
The already know that the TMS is an active source rock due to historical production from the Lower Tuscaloosa Sand (Sourced from the TMS). The Buena Vista Formation would also make for an attractive drilling target being about 1,500 feet shallower than the surrounding Cretaceous strata, resulting in cheaper wells & better reservoir quality due to natural fractures associated the tectonics that formed the Buena Vista Structure.