Geology of the Buffalo River Valley in the vicinity of U.S. 65, Arkansas Ozarks
U.S. 65 is a major north-south artery across Arkansas. In north-central Arkansas it traverses the Ozark Plateau Province, which represents a stable Paleozoic platform located on the southwest flank of the Ozark Dome and north of the Ouachita trough. In Searcy County the highway crosses the deeply incised valley of the Buffalo River (Fig. 1) about two-thirds of the distance from Harrison to Marshall.