Soil Summary:
very deep, very gravelly sandy loam to sandy loam surfaces with very gravelly sandy clay loam to clay subsoils, lime is absent or deeper in the soil profile, well developed (subsoil clay accumulation); nearly complete coverage of the unit indicates Pima County map units 9 (Caralampi extremely gravelly sandy loam, 5 to 15 percent slopes) and 73 (Sasabe-Caralampi complex, 1 to 15 percent slopes) dominate. They comprise approximately 62% and 28% of the unit, respectively
Geologic Materials:
alluvium and residuum associated with Boulder Conglomerate of Oro Valley, late Miocene to Quaternary (QTsb); middle to latest Pleistocene alluvium (Qi2, Qi3); early Pleistocene piedmont deposits (Qo); and Holocene piedmont alluvium and river deposits, undivided (Qy, Qyr) which comprise 68%, 12%, 10% and 8% of the unit, respectively
