Soil Summary:
very deep, very gravelly sandy loam to sand surface soils over gravelly, very gravelly and extremely gravelly sandy loam to sand subsurface layers, soils are limy throughout, moderate to strong development (lime accumulation); other soils are finer textured and very deep, typically silt loam surfaces over silty clay and clay subsurface layers, lime and gypsum concentrations occur throughout, moderate to strong development (lime and gypsum accumulation, clay accumulation); other soils have fine sandy loam surfaces and loam and fine sandy loam subsurface layers with lime and gypsum concentrations throughout, and moderate to strong development (lime and gypsum accumulation); dominated by Cochise County Northeastern Part soil survey map units 14 (Calcigypsids-Contention-Redo complex, Chihuahuan, 5 to 45 percent slopes) and 27 (Contention and Monzingo soils, 5 to 60 percent slopes). These units comprise 61% and 19% of the ELT, respectively
Geologic Materials:
alluvium and residuum associated with the St. David Formation, undifferentiated (Tsd); Pliocene-Pleistocene conglomerate and sandstone (QTcs); Late Pliocene-Early Pleistocene relict basin floor deposit (QTbf); Middle Pleistocene piedmont alluvium (Qi2); and undifferentiated Holocene derived from Tsd (Qysd) which comprise 52%, 12%, 10%, 10% and 7% of the ELT, respectively
