ELT 18c

Elevation Range
Minimum: 
1007 m
Minimum in ft: 
3304 ft
Maximum: 
1135 m
Maximum in ft: 
3724 ft
Median: 
1072 m
Median in ft: 
3517 ft
Soil Summary: 
shallow to bedrock (mostly phyllite, andesite and similar rock types), very gravelly sandy loams to extremely channery loams over very gravelly sandy clay loams to extremely channery clays, lacking lime, moderate to high development (clay accumulation); unit dominated by Pima County soil survey map unit 56 (Pantak-Deloro complex, 8 to 35 percent slopes). This unit comprises 100% of the ELT
Geologic Materials: 
alluvium, colluvium and residuum associated with Undivided Oligocene to Miocene Volcanic Rocks (Tv); Tertiary Sediments (Ts); Xgl; and sandstone, siltstone and conglomerate, undivided (QTs) which comprise 44%, 37%, 10% and 8% of the unit, respectively
Landforms: 
moderately dissected, deeply incised mountain slopes
LTA 18
Upper Sonoran desert on hills and mountains of sedimentary, metasedimentary, and extrusive rocks

Map with the ELT 18c polygon highlighted.

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