Named for a poorly differentiated band of red and red-yellow silt, thin sandstone, and limestone. Type section is in an escarpment 0.2 mi slightly north of west from Conoly Brooks Ranch house, west of State hwy 51, Pecos Co, TX in the Permian basin. These rocks grade westward into tidal flat mudstone and channel sandstone. Composite section [locations not given] described the formation as a 377 ft thick sequence of red sandy shale at base succeeded by 1) yellow silty to argillaceous lime mudstone in 1-2 ft thick beds alternating with sandy shale, 2) gray-weathering, fine- to medium-grained, cross-bedded sandstone, and 3) yellow-weathering sandy lime mudstone and sandy shale with a few beds of cross-bedded sandstone. Overlies the newly named Stockton Gap Formation. Underlies Hess Member of Leonard Formation in composite section. Geologic map. Cross sections. Considered to be the eastern tidal-flat mudstone and redbed facies of the Lenox Hills Formation. Shown as Early Permian, Wolfcampian age.

Source: GNU records (USGS DDS-6; Denver GNULEX).