Exploring in the Marcellus Shale or other shale gas plays and need seismic structure information? Evaluating CO2 Sequestration Sites? AOA have a unique capability for small footprint accelerated impact source land seismic that is ideally suited for imaging shale gas plays such as the Marcellus, Geneseo, Haynsville, and Barnett Shales. The AxisTM source is mobile, small footprint, with stable high frequencies and deep penetration. Compared with dynamite or vibroseis sources, the AxisTM system has distinct advantages in permitting, logistics, data quality, and in minimizing environmental effects.