Ecological Land Type

ELT 7b

Elevation Range
Minimum: 
829 m
Minimum in ft: 
2720 ft
Maximum: 
928 m
Maximum in ft: 
3045 ft
Median: 
856 m
Median in ft: 
2808 ft
Soil Summary: 
dominant soils are very shallow and shallow to granite and similar rocks; very gravelly sandy loams throughout, some soils with gravelly clay loam surfaces and gravelly clay and clay subsoils; no lime; no to moderate soil development (clay accumulation); dominated by Pima County soil survey map unit 13 (Cellar-Lehmans complex, 5 to 25 percent slopes). This unit comprises 99% of the ELT
Geologic Materials: 
alluvium and residuum associated with the Catalina-Rincon igneous and metamorphic complex (TXm) and middle to late Pleistocene piedmont alluvium, undivided (Qi) which comprise 44% and 34% of the unit, respectively
Landforms: 
moderately to finely dissected, weakly to moderately incised fan and pediment surfaces