Sections

Ecological Land Types within LTA 19.

ELT 19a

Elevation Range
Minimum: 
1023 m
Minimum in ft: 
3356 ft
Maximum: 
1138 m
Maximum in ft: 
3734 ft
Median: 
1085 m
Median in ft: 
3560 ft
Soil Summary: 
dominant soils are very shallow to shallow to conglomerate and very deep, very gravelly fine sand or sandy loam surfaces over often stratified fine sand, sand, and gravelly coarse sand or sandy loam subsurface layers, mostly limy throughout, no or little soil development; unit is dominated by Cochise County, Northwestern Part soil survey unit 68 (Redington-Ripsey-Rock outcrop assoication, 15 to 70 percent slopes). This unit comprises 92 % of the ELT
Geologic Materials: 
alluvium and residuum associated with and Pleistocene piedmont alluvium (Qi1, Qi2); Quiburis formation, unnamed (Tqf, Tq); ); and conglomerate mostly older than Quiburis, San Manuel? (Tcg) which comprise 42%, 41%, and 13% of the unit, respectively
Landforms: 
coarsely dissected, weakly incised fan and pediment surfaces

ELT 19b

Elevation Range
Minimum: 
951 m
Minimum in ft: 
3121 ft
Maximum: 
1221 m
Maximum in ft: 
4005 ft
Median: 
1063 m
Median in ft: 
3488 ft
Soil Summary: 
dominant soils are very shallow and shallow to conglomerate and caliche hardpan, moderately deep to fanglomerate, and very deep, very gravelly fine sand or sandy loam surfaces over often stratified fine sand, sand, and gravelly coarse sand or gravelly loam, very and extremely gravelly sandy loam, very gravelly sandy clay loam, and sandy loam subsurface layers, mostly limy throughout, no or little soil development and moderately developed (lime accumulation); unit is dominated by Pima County soil survey map unit 65 (Powerline-Kimrose family complex, 10 to 35 percent slopes) and Cochise County, Northwestern Part soil survey unit 68 (Redington-Ripsey-Rock outcrop assoication, 15 to 70 percent slopes). These units comprise 70% and 24% of the ELT, respectively
Geologic Materials: 
alluvium and residuum associated with sandstone, siltstone, and conglomerate, undivided (QTs) and Quiburis formation, unnamed (Tqf) which comprise 64% and 25% of the unit, respectively
Landforms: 
finely dissected, weakly to moderately incised fan and pediment surfaces

ELT 19c

Elevation Range
Minimum: 
938 m
Minimum in ft: 
3078 ft
Maximum: 
1116 m
Maximum in ft: 
3662 ft
Median: 
1025 m
Median in ft: 
3363 ft
Soil Summary: 
dominant soils are very shallow to shallow to conglomerate and very deep, very gravelly fine sand or sandy loam surfaces over often stratified fine sand, sand, and gravelly coarse sand or sandy loam subsurface layers, mostly limy throughout, no or little soil development; unit is dominated by Cochise County, Northwestern Part soil survey unit 68 (Redington-Ripsey-Rock outcrop assoication, 15 to 70 percent slopes). This unit comprises 95% of the ELT
Geologic Materials: 
alluvium and residuum associated with Quiburis formation, fine-grained (Tqf); conglomerate mostly older than Quiburis, San Manuel? (Tcg); Quiburis formation with Pleistocene terraces (Tq); and Pleistocene piedmont alluvium (Qy2) which comprise 51%, 25%, 15%, and 9% of the unit, respectively
Landforms: 
moderately dissected, weakly to moderately incised fan and pediment surfaces

ELT 19d

Elevation Range
Minimum: 
1097 m
Minimum in ft: 
3600 ft
Maximum: 
1186 m
Maximum in ft: 
3891 ft
Median: 
1146 m
Median in ft: 
3760 ft
Soil Summary: 
dominant soils are very shallow to shallow to conglomerate and very deep, very gravelly fine sand or sandy loam surfaces over often stratified fine sand, sand, and gravelly coarse sand or sandy loam subsurface layers, mostly limy throughout, no or little soil development; unit is dominated by Cochise County, Northwestern Part soil survey unit 68 (Redington-Ripsey-Rock outcrop assoication, 15 to 70 percent slopes). This unit comprises 99% of the ELT
Geologic Materials: 
alluvium and residuum associated with Quiburis formation, unnamed (Tqf); conglomerate, unnamed (Tcg); and Pleistocene piedmont alluvium (Qi1) which comprise 59%, 34% and 8% of the unit, respectively
Landforms: 
moderately dissected, deeply incised fan and pediment surfaces

ELT 19e

Elevation Range
Minimum: 
953 m
Minimum in ft: 
3125 ft
Maximum: 
1243 m
Maximum in ft: 
4078 ft
Median: 
1061 m
Median in ft: 
3481 ft
Soil Summary: 
dominant soils range from shallow to caliche hardpan to very deep, sandy loam to very gravelly sandy loam and loam surfaces over gravelly, very gravelly, and extremely gravelly sandy loam and loam subsurface layers, limy throughout, moderate development (lime accumulation); unit is dominated by Cochise County, Northwestern Part soil survey unit 78 (Stagecoach-Whitlock-Delnorte, Sonoran, 5 to 20 percent slopes). This unit comprises 97% of the ELT
Geologic Materials: 
alluvium and residuum associated with Quiburis formation, fanglomerate (Tqf); conglomerate mostly older than Quiburis, San Manuel? (Tcg); and Pleistocene piedmont alluvium (Qy,Qy2) which comprise 53%, 32% and 10%, of the unit, respectively
Landforms: 
finely dissected, weakly to deeply incised fan and pediment surfaces

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