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Seismic reflections from boundaries within the Ordovician Arbuckle-Simpson aquifer correlate with boundaries seen in well logs and cores. Seismic surveys at different geologic scales within this karst aquifer display the same fault character regardless of the survey’s target depth. Faults observed at intermediate depths in the Arbuckle-Simpson aquifer extend upward to the location of mapped fault traces, and such faults are seen clearly on ground penetrating radar and electrical resistivity imaging surveys.