Ecological Land Types within LTA 30.

ELT 30a

Elevation Range

Minimum:

1257 m

Minimum in ft:

4124 ft

Maximum:

1721 m

Maximum in ft:

5647 ft

Median:

1383 m

Median in ft:

4537 ft

Soil Summary:

dominant soils are very shallow and shallow to granite and similar rocks; very cobbly loams or 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 Cochise County Northeastern Part soil survey map units 71 (Romero- Rock outcrop complex, 5 to 60 percent slopes) and 12 (Budlamp-Rock outcrop complex, 5 to 70 percent slopes). These units comprise 61% and 31% of the ELT, respectively

Geologic Materials:

alluvium, colluvium and residuum associated with the Johnny Lyon Granodiorite (Xgi), biotite granitoids of Happy Valley area (YXg), and aplitic granitoids of Wildhorse Mountain area (YXg) which comprise 48%, 33% and 19% of the unit, respectively

Landforms:

moderately to finely dissected, weakly incised mountain slopes and hills

ELT 30b

Elevation Range

Minimum:

1073 m

Minimum in ft:

3520 ft

Maximum:

1474 m

Maximum in ft:

4835 ft

Median:

1276 m

Median in ft:

4186 ft

Soil Summary:

dominant soils are very shallow and shallow to granite and similar rocks; very cobbly loams or 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 Cochise County Northeastern Part soil survey map units 71 (Romero- Rock outcrop complex, 5 to 60 percent slopes) and 62 (Nolam-Stronghold complex, 5 to 30 percent slopes). These unit comprise 91% and 9% of the ELT, respectively

Geologic Materials:

alluvium, colluvium and residuum associated with the Johnny Lyon Granodiorite (Xgi) which comprises 92% of the unit

Landforms:

moderately to finely dissected, weakly to moderately incised mountain slopes

ELT 30c

Elevation Range

Minimum:

1189 m

Minimum in ft:

3900 ft

Maximum:

1367 m

Maximum in ft:

4484 ft

Median:

1281 m

Median in ft:

4203 ft

Soil Summary:

soil survey information is incomplete for this unit; based on a 40% sample the dominant soils are very shallow and shallow to granite and similar rocks; very cobbly loams or 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); the mapped area of this unit is dominated by Cochise County Northeastern Part soil survey map unit 69 (Romero-Nodman-Rock outcrop complex, 5 to 60 percent slopes)

Geologic Materials:

alluvium, colluvium and residuum associated with the granite of Red Rock Canyon (YXgr), Middle Proterozoic Granitic Rocks (Yg), and Early Proterozoic Pinal Schist (Xp) which comprise 51%, 33% and 12% of the unit, respectively

Landforms:

finely dissected, weakly to moderately incised mountain slopes and hills

ELT 30d

Elevation Range

Minimum:

1228 m

Minimum in ft:

4030 ft

Maximum:

1325 m

Maximum in ft:

4348 ft

Median:

1270 m

Median in ft:

4167 ft

Soil Summary:

soil survey information is incomplete for this unit; correlates with GES unit 490 characterized by very cobbly and cobbly sandy loams deep to granite or granite-like bedrock, lacking lime throughout, acid soils lacking lime throughout, minimal to modest soil development (clay accumulation), and associated rock outcroppings

Geologic Materials:

alluvium, colluvium and residuum associated with the granite of Red Rock Canyon (YXgr), Middle Proterozoic Granitic Rocks (Yg), and sandstone, siltstone and conglomerate, undivided (QTs) which comprise 40%, 32% and 25% of the unit, respectively

Landforms:

finely dissected, weakly incised mountain elevated plains

ELT 30e

Elevation Range

Minimum:

1104 m

Minimum in ft:

3621 ft

Maximum:

1289 m

Maximum in ft:

4228 ft

Median:

1208 m

Median in ft:

3963 ft

Soil Summary:

the dominant soils are very shallow and shallow to granite and similar rocks; very cobbly loams or 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); this unit is dominated by Cochise County Northeastern Part soil survey map unit 69 (Romero-Nodman-Rock outcrop complex, 5 to 60 percent slopes). It comprises 89% of the unit

Geologic Materials:

alluvium, colluvium and residuum associated with the Johnny Lyon Granodiorite (Xj) and Pinal Schist (Xp) which comprise 86% and 10% of the unit, respectively

Landforms:

finely dissected, weakly to moderately incised mountain slopes and hills

ELT 30f

Elevation Range

Minimum:

1020 m

Minimum in ft:

3346 ft

Maximum:

1090 m

Maximum in ft:

3575 ft

Median:

1051 m

Median in ft:

3448 ft

Soil Summary:

the dominant soils are very shallow and shallow to granite and similar rocks; very cobbly loams or 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); this unit is dominated by Cochise County Northeastern Part soil survey map unit 86 (Wikieup family-Anklam complex, 10 to 45 percent slopes). It comprises 88% of the unit

Geologic Materials:

alluvium, colluvium and residuum associated with the Johnny Lyon Granodiorite (Xgj) and Quiburis basin fill deposit, playa/distal fan facies (Tqp) which comprise 69% and 19% of the unit, respectively

Landforms:

moderately dissected, moderately incised hills

ELT 30g

Elevation Range

Minimum:

1021 m

Minimum in ft:

3349 ft

Maximum:

1147 m

Maximum in ft:

3763 ft

Median:

1077 m

Median in ft:

3533 ft

Soil Summary:

the dominant soils are very shallow and shallow to granite and similar rocks; very cobbly loams or 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); this unit is dominated by Cochise County Northeastern Part soil survey map unit 86 (Wikieup family-Anklam complex, 10 to 45 percent slopes). It comprises nearly 100% of the unit

Geologic Materials:

alluvium, colluvium and residuum associated with the Johnny Lyon Granodiorite (Xgj); Late Holocene Alluvium (Qy2); and Early Pleistocene alluvium, planar, indurated, strong calcium carbonate (Qi1) which comprise 62%,10% and 8% of the unit, respectively

Landforms:

moderately dissected, moderately incised hills

ELT 30h

Elevation Range

Minimum:

985 m

Minimum in ft:

3232 ft

Maximum:

1372 m

Maximum in ft:

4501 ft

Median:

1255 m

Median in ft:

4117 ft

Soil Summary:

dominant soils are very shallow and shallow to granite and similar rocks; very cobbly loams or 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 Cochise County Northeastern Part soil survey map unit 71 (Romero- Rock outcrop complex, 5 to 60 percent slopes) which comprises 100% of the ELT

Geologic Materials:

alluvium, colluvium and residuum associated with the Precambrian quartz monzonite of Lingrey, 1982 (YXg); Escabrosa-Horquilla tectonite (PMct); Pinal Schist (Xp); and Johnny Lyon Granodiorite (Xgi) which comprises 92% of the unit

Landforms:

moderately to finely dissected, weakly to moderately incised mountain slopes

Ecological Land Types within LTA 30.

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