“Warp and Weft of the Ozarks Uplift, Phantom Sequences, and Origins of Carbonate Mud Mounds in Southwestern Missouri” Missouri’s Ozarks plateaus region is a product of subtle deformation and epeirogenic uplift that likely began during the middle Devonian, spanning late Devonian and Mississippian time, and culminating in the Pennsylvanian. Previous investigators have shown that much of southern Missouri and northern Arkansas was dissected by a series of right-lateral (NW-SE) and left-lateral (SW-NE) strike-slip faults. Stratigraphic successions in southwestern Missouri are intertwined with structures, hence a warp and weft analogy. Lower Mississippian strata of southwestern Missouri include carbonate mud mounds, mostly in the Compton Limestone. These have been interpreted as bioherms (reef mounds), displaced reef mounds, anomalous accumulations produced by baffling or mud-trapping organisms or microbial agents, or in recent interpretation, slide or slump masses associated with fault movements. An effort to compare southwestern Missouri’s mounds with former and current type-mounds of Waulsort, Anseremme, and Celles-Gendron rail tunnel is only partly complete and an ongoing international aspect of this study.