ELT 116a
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 soil survey map units 73 (Sasabe-Caralampi complex, 1 to 15 percent slopes), 27 (Diaspar sandy loam, 1 to 5 percent slopes), and 9 (Caralampi extremely gravelly sandy loam, 5 to 15 percent slopes) dominate
Geologic Materials:
alluvium and residuum associated with early to late Pleistocene alluvium (Qi, Qi1, Qi2, Qi3); sandstone, siltstone and conglomerate, undivided (QTs); and Holocene piedmont alluvium, undivided (Qy) which comprise 76%, 15% and 8% of the unit, respectively
Landforms:
mostly undissected fan and pediment surfaces