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); Pima County soil survey map units 73 (Sasabe-Caralampi complex, 1 to 15 percent slopes), 18 (Combate gravelly loamy coarse sand, 2 to 8 percent slopes), and 9 (Caralampi extremely gravelly sandy loam, 5 to 15 percent slopes). They comprise 66%, 16% and 16% of the ELT, respectively
Geologic Materials:
alluvium and residuum associated with middle to latest Pleistocene alluvium (Qi2, Qi3); Boulder Conglomerate of Oro Valley, late Miocene to Quaternary (QTsb); Holocene piedmont alluvium, undivided (Qy,Qyr) and sandstone, siltstone and conglomerate, undivided (QTs) which comprise 45%, 20%,18%, and 17% of the unit, respectively
