sentences:  Springdale is located on the Springfield Plateau, a subset of The Ozarks which run through northwest Arkansas, southern Missouri, and Northeastern Oklahoma.In the Springdale area, sandstones and shales were deposited on top of the Springfield Plateau during the Pennsylvanian Period.These were eroded after the Ouachita orogeny and uplift, exposing Mississippian limestone formations of the Springfield Plateau visible today.