Bleiblerville and Houston Black soils contain less calcium carbonate in the control section. Branyon soils are on terraces, have less amplitude of waviness between the A and B horizons and lack colors with chroma of more than 1.5 within 20 inches of the surface in some part of the pedon. Burleson, Dimebox, and Leson soils are noncalcareous to a depth of more than 12 inches. Clarita soils have hue of 7.5YR or redder in the B horizon. Fairlie soils have paralithic contact with chalk at a depth between 40 and 60 inches.
Watonga soils have thinner sola and are on flood plains.
Heiden, Luling, Ovan, and Sanger soils have chroma of more than 1.5 within 12 inches of the soil surface in more than half the pedon. Slidell soils are on nearly level to gently sloping uplands. Slopes range from 0 to 5 percent but are mainly less than 3 percent. The soil formed in calcareous marine sediments of lower Cretaceous formations. Mean annual precipitation is 26 to 34 inches.