Toroweap Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Permian
 ....Toroweap Formation
RTUtah
 Nevada
 Arizona
SNIn Aubrey Group. In Arizona can be subdivided into 3 main units (ascending): red to buff sandstone; calcareous sandstone and arenaceous limestone; and alternating red and buff sandstone, siltstone, and some shale. In NW Arizona, SE Nevada, and SW Utah.