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Figure 10. Schematic cross section though central Texas from the Early Cretaceous shelf margin to the present shelf margin, showing growth faults, the Vicksburg and Frio Fault Zones (modified from Ewing, 1991a, 1991b), and assessment units (AU). Frio and Anahuac Formations are highlighted in green and yellow, respectively. Fault zones are defined based on Ewing et al. (1990). Updip Frio (green) also includes updip Vicksburg Group.