Sections

Ecological Land Types within LTA 22.

ELT 22a

Elevation Range
Minimum: 
995 m
Minimum in ft: 
3264 ft
Maximum: 
1262 m
Maximum in ft: 
4140 ft
Median: 
1144 m
Median in ft: 
3753 ft
Soil Summary: 
dominant soils are very deep, very gravelly fine sandy loam over very gravelly sandy clay loam subsoils or very gravelly and gravelly sandy loam subsurface layers, lime within a foot of the soil surface or throughout, moderate development (clay and/or lime accumulation), other soils are very gravelly loamy sand over gravelly sandy loam and are limy throughout, moderate development (lime accumulation); unit is dominated by Cochise County, Northwestern Part soil survey units 62 (Nolam-Stronghold complex, 5 to 30 percent slopes) and 83 (Tombstone-Stronghold complex, 5 to 30 percent slopes). These units comprise 63% and 29% of the ELT, respectively
Geologic Materials: 
alluvium and residuum associated with Quiburis formation, fanglomerate (Tqf); conglomerate, older than Quiburis, San Manuel? (Tcg); and young alluvium along valley (Qy) which comprise 54%, 36% and 8% of the unit, respectively
Landforms: 
moderately to finely dissected, weakly to moderately incised fan and pediment surfaces

ELT 22b

Elevation Range
Minimum: 
1179 m
Minimum in ft: 
3869 ft
Maximum: 
1269 m
Maximum in ft: 
4163 ft
Median: 
1222 m
Median in ft: 
4009 ft
Soil Summary: 
dominant soils are very deep, very gravelly fine sandy loam over very gravelly sandy clay loam subsoils, lime within a foot of the soil surface, moderate development (clay and lime accumulation), other soils are very gravelly loamy sand over gravelly sandy loam and are limy throughout, moderate development (lime accumulation); unit is dominated by Cochise County, Northwestern Part soil survey units 62 (Nolam-Stronghold complex, 5 to 30 percent slopes). This unit comprises 100% of the ELT
Geologic Materials: 
alluvium and residuum associated with Quiburis formation, fanglomerate (Tqf) which comprises 100% of the unit
Landforms: 
moderately to finely dissected, weakly to moderately incised fan and pediment surfaces

ELT 22c

Elevation Range
Minimum: 
1084 m
Minimum in ft: 
3558 ft
Maximum: 
1232 m
Maximum in ft: 
4043 ft
Median: 
1171 m
Median in ft: 
3842 ft
Soil Summary: 
dominant soils are very deep, very gravelly loamy sand and fine sandy loam to loam surfaces over gravelly, very gravelly and extremely gravelly sandy loam or clay, clay loam, sandy clay loam and gravelly clay loam subsurface layers, limy throughout or a foot or more to lime, moderate to strong development (lime and clay accumulation) ; unit is dominated by Cochise County, Northwestern Part soil survey units 62 (Nolam-Stronghold complex, 5 to 30 percent slopes) and 79 (Stronghold-McAllister- Elgin complex, 5 to 25 percent slopes). These units comprise 63% and 34% of the ELT, respectively
Geologic Materials: 
alluvium and residuum associated with deeply dissected basin fill veneer (Qo); Quiburis formation, fanglomerate (Tqf); and sandstone, siltstone, and conglomerate, undivided (QTs) which comprise 51%, 44% and 5% of the unit, respectively
Landforms: 
moderately to finely dissected, weakly to moderately incised fan and pediment surfaces

ELT 22d

Elevation Range
Minimum: 
1016 m
Minimum in ft: 
3332 ft
Maximum: 
1259 m
Maximum in ft: 
4130 ft
Median: 
1148 m
Median in ft: 
3766 ft
Soil Summary: 
dominant soils are very deep, very gravelly fine sandy loam over very gravelly sandy clay loam subsoils, lime within a foot of the soil surface, moderate development (clay and lime accumulation), other soils are very gravelly loamy sand over gravelly sandy loam and are limy throughout, moderate development (lime accumulation); unit is dominated by Cochise County, Northwestern Part soil survey units 62 (Nolam-Stronghold complex, 5 to 30 percent slopes). These unit comprises 93% of the ELT
Geologic Materials: 
alluvium and residuum associated with Quiburis formation, fanglomerate (Tqf); Late Holocene alluvium (Qy2) and deeply dissected basin fill veneer (Qo) which comprise 70%, 9% and 9% of the unit, respectively
Landforms: 
moderately to finely dissected, weakly to moderately incised fan and pediment surfaces

ELT 22e

Elevation Range
Minimum: 
1015 m
Minimum in ft: 
3330 ft
Maximum: 
1403 m
Maximum in ft: 
4604 ft
Median: 
1300 m
Median in ft: 
4265 ft
Soil Summary: 
dominant soils are very deep, very gravelly fine sandy loam over very gravelly sandy clay loam subsoils or very gravelly and gravelly sandy loam subsurface layers, lime within a foot of the soil surface or throughout, moderate development (clay and/or lime accumulation), other soils are very gravelly loamy sand over gravelly sandy loam and are limy throughout, moderate development (lime accumulation); unit is dominated by Cochise County, Northwestern Part soil survey units 83 (Tombstone-Stronghold complex, 5 to 30 percent slopes) and 62 (Nolam-Stronghold complex, 5 to 30 percent slopes). These units comprise 89% and 7% of the ELT, respectively
Geologic Materials: 
alluvium and residuum associated with basin fill, not tilted, may include some Paige Gravel (QTs); Paige gravels (Tsy); and Johnny Lyon Granodiorite (Xgl) which comprise 59%, 13% and 7% of the unit, respectively
Landforms: 
moderately to finely dissected, weakly to moderately incised fan and pediment surfaces

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