Unlike well-known plateaus associated with Cenozoic orogens, the Appalachian and Ozark Plateaus of eastern United States fringe foreland side a long inactive deeply eroded orogen. These intracratonic (FIPs), which are underlain by sub-horizontal cratonic-platform strata and, in places, foreland-basin strata, now lie 0.5–1.2 km above sea level, notably higher than adjacent fold-thrust belts. An ...