Sections

Ecological Land Types within LTA 182.

ELT 182a

Elevation Range
Minimum: 
868 m
Minimum in ft: 
2849 ft
Maximum: 
931 m
Maximum in ft: 
3055 ft
Median: 
904 m
Median in ft: 
2966 ft
Soil Summary: 
shallow to granite or granite like rocks; very gravelly fine sandy loam over gravelly sandy clay loam; no lime; modest development (clay accumulation); this unit is dominated by Pima County map unit 16 (Chimenea very gravelly fine sandy loam, 5 to 15 percent slopes) which comprises nearly 100% of the ELT
Geologic Materials: 
alluvium and residuum associated with sandstone, siltstone and conglomerate, undivided along with undivided surficial deposits and basin fill (QTs) and Rincon Valley Granodiorite (Xrv) which comprise 50% and 49% of the unit, respectively
Landforms: 
coarsely dissected, weakly incised pediment surfaces and hills

ELT 182b

Elevation Range
Minimum: 
871 m
Minimum in ft: 
2858 ft
Maximum: 
918 m
Maximum in ft: 
3011 ft
Median: 
888 m
Median in ft: 
2913 ft
Soil Summary: 
soils are very shallow and shallow to andesite and granite like rocks, very gravelly sandy loam over very gravelly clay loams and loams; lime not present, no to modest development (clay accumulation) ; this unit is dominated by Pima County map unit 2 (Anklam-Cellar-Rock outcrop complex, 15 to 55 percent slopes) which comprises nearly 100% of the ELT
Geologic Materials: 
alluvium and residuum associated with rhyolite, tuff, and Turkey Track Andesite (Tpv); sandstone, siltstone and conglomerate, undivided (QTs); Rincon Valley Granodiorite (Xrv); and Pantano Formation (Tp) which comprise 58%, 16%, 16% and 6% of the unit, respectively
Landforms: 
coarsely dissected, weakly incised pediment surfaces and hills

ELT 182c

Elevation Range
Minimum: 
876 m
Minimum in ft: 
2874 ft
Maximum: 
952 m
Maximum in ft: 
3124 ft
Median: 
913 m
Median in ft: 
2995 ft
Soil Summary: 
soils are shallow and moderately deep to granite or granite-like rocks, extremely gravelly sandy loams and loams, often with very or extremely gravelly sandy clay subsoils, lime can occur throughout or be restricted to rock coatings lower in the soil, and moderate development (lime and subsoil clay accumulation); this unit is dominated by Pima County map unit 58 (Pantano-Granolite complex, 5 to 25 percent slopes) which comprises nearly 100% of the ELT
Geologic Materials: 
alluvium and residuum associated with Pinal Schist and quartzite (Xp); middle to late Pleistocene piedmont alluvium, undivided (Qi); Rincon Valley Granodiorite (Xrv); and undivided surficial deposits and basin fill (QTs) and which comprise 78%, 9%, 7% and 5% of the unit, respectively
Landforms: 
coarsely to moderately dissected, weakly incised pediment surfaces and hills

Catalina