Ecological Land Type

ELT 118a

Elevation Range
757 m
Minimum in ft: 
2482 ft
1002 m
Maximum in ft: 
3286 ft
845 m
Median in ft: 
2772 ft
Soil Summary: 
very deep; very gravelly clay loam, gravelly sandy loam, and very gravelly sandy loam surface layers over gravelly, very gravelly and extremely gravelly sandy loam, gravelly and very gravelly sandy clay loam subsurface layers; lime depth ranges from the surface to more than a foot below the soil surface; no to modest development (lime and clay accumulation); dominated by Pima County soil survey map units 61 (Pinaleno-Stagecoach-Palos Verdes complex, 10 to 35 percent slopes) and 60 (Pinaleno-Stagecoach complex, 5 to 16 percent slopes). These units comprise 67 and 31% of the ELT, respectively
Geologic Materials: 
alluvium and residuum associated with the Rillito Formation (Ts1) and sandstone, siltstone and conglomerate, undivided (QTs) which comprise 69% and 20% of the unit, respectively
moderately to finely dissected, moderately to deeply incised fan and pediment surfaces