These are the Garceno , Hidalgo , Ingram , Maverick , Pimer , Sinton series. Hidalgo soils have calcic horizons at depths of less than 40 inches. Pimer and Sinton soils have mollic epipedons more than 20 inches thick. In addition, Pimer soils have fine-silty control sections. These soils are on nearly level to gently sloping uplands.
Surfaces mainly are plane to convex but some are concave.
Gradients are dominantly 0.5 to 2.5 percent but range from 0 to 5 percent. The soil formed in calcareous marine clays stratified with sandstone. Climate is hot and dry subhumid to semiarid. Average annual precipitation is 20 to 26 inches, mean annual temperature ranges from 70 to 74 degrees F., and Thornthwaite annual P-E indices range from 24 to 34. These are the Catarina , Montell , Monteola , and Uvalde soils in addition to the competing Garceno and Maverick soils.