ELT 6a
Soil Summary:
very deep, gravelly sandy loam surface layers over gravelly sandy loam and gravelly sandy clay loam subsurface layers, other soils associated with recent alluvium have sandy loam surfaces over fine sandy loams, sandy loams and very gravelly sandy loams; depth to lime ranges from the surface to more than a foot below the surface; weak to moderate (clay accumulation) development; dominated by Pima County soil survey map units 54 (Palos Verdes-Jaynes complex, 2 to 8 percent slopes) and 3 (Anthony fine sandy loam, 0 to 3 percent slopes). These units comprise 85 and 8% of the ELT, respectively
Geologic Materials:
alluvium and residuum associated with middle to late Pleistocene piedmont alluvium, undivided (Qi), late to latest Pleistocene piedmont alluvium (Qi3), Pantano Formation (Tp), Holocene river deposits (Qy2, Qyr), and small areas of rock exposure (mostly granodiorite) which comprise 70%, 9%, 11%, 7% and 3% of the unit, respectively
Landforms:
finely dissected, weakly to moderately incised fan and pediment surfaces