Figure 10. Interpreted deformation of the Pliocene–Pleistocene unconformity surface. Black lines—faults, J—Joiner ridge, GRTZ—Grand River tectonic zone; CMTZ—Central Missouri tectonic zone; OFZ—Osceola fault zone; BMTZ—Bolivar-Mansfield tectonic zone; WRFZ—White River fault zone, EM—Eastern Rift Margin faults, AF—Axial fault, WM—Western Rift Margin fault, RF—Reelfoot fault. AR—Arkansas, KY—Kentucky, MO—Missouri, MS—Mississippi, TN—Tennessee. Inset map shows a restraining bend (van der Pluijm and Marshak, 2004).