Ecological Land Types within LTA 15.

ELT 15a

Elevation Range

Minimum:

1244 m

Minimum in ft:

4082 ft

Maximum:

1688 m

Maximum in ft:

5538 ft

Median:

1386 m

Median in ft:

4547 ft

Soil Summary:

soil survey data is not available for this ELT; correlates with GES unit 475 characterized by extremely cobbly sandy loams shallow to granite or granite-like bedrock, acid soils lacking lime throughout, minimal soil development, and associated rock outcroppings

Geologic Materials:

alluvium, colluvium and residuum associated with the granodiorite of Happy Valley (Tgh); Catalina-Rincon igneous metamorphic complex (TXm); biotite granitoids of Happy Valley area (YXg); sandstone, siltstone, and conglomerate, undivided (QTs); and Pinal Schist (Xp) which comprise 46%, 37% 7%, 7% and 2% of the unit, respectively

Landforms:

coarsely to moderately dissected, weakly to moderately incised mountain slopes

ELT 15b

Elevation Range

Minimum:

1280 m

Minimum in ft:

4199 ft

Maximum:

1605 m

Maximum in ft:

5267 ft

Median:

1396 m

Median in ft:

4580 ft

Soil Summary:

soil survey data is not available for this ELT; correlates with GES units 475 and 490. GES unit 475 is characterized by extremely cobbly sandy loams shallow to granite or granite-like bedrock, acid soils lacking lime throughout, minimal soil development, and associated rock outcroppings. GES unit 490 is 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 Catalina-Rincon igneous metamorphic complex (TXm) and Middle to Late Pleistocene Piedmont Alluvium (Qi2) which comprise 93%, and 7% of the unit, respectively

Landforms:

coarsely dissected, deeply incised mountain slopes

ELT 15c

Elevation Range

Minimum:

1200 m

Minimum in ft:

3937 ft

Maximum:

1598 m

Maximum in ft:

5242 ft

Median:

1319 m

Median in ft:

4327 ft

Soil Summary:

Geologic Materials:

alluvium, colluvium and residuum associated with the Catalina-Rincon igneous metamorphic complex (TXm); Wrong Mountain Quartz Monzonite (TKgw); and granodiorite of Happy Valley (Tgh) which comprise 72%, 23% and 4% of the unit, respectively

Landforms:

moderately to finely dissected, weakly incised mountain slopes

ELT 15d

Elevation Range

Minimum:

1261 m

Minimum in ft:

4138 ft

Maximum:

1843 m

Maximum in ft:

6048 ft

Median:

1522 m

Median in ft:

4993 ft

Soil Summary:

soil survey data coverage is incomplete for this ELT; correlates with GES unit 475 characterized by extremely cobbly sandy loams shallow to granite or granite-like bedrock, acid soils lacking lime throughout, minimal soil development, and associated rock outcroppings

Geologic Materials:

alluvium, colluvium and residuum associated with the granodiorite of Happy Valley (Tgh); Wrong Mountain Quartz Monzonite (TKgw); Catalina-Rincon igneous metamorphic complex (TXm); and Pinal Schist (Xp) which comprise 48%, 42%, 8%, and 2% of the unit, respectively

Landforms:

coarsely dissected, deeply incised mountain slopes

ELT 15e

Elevation Range

Minimum:

1446 m

Minimum in ft:

4744 ft

Maximum:

1854 m

Maximum in ft:

6084 ft

Median:

1621 m

Median in ft:

5318 ft

Soil Summary:

Geologic Materials:

alluvium, colluvium and residuum associated with granodiorite of Happy Valley (Tgh) and Pinal Schist (Xp) which comprise 97% and 3% of the unit, respectively

Landforms:

coarsely to moderately dissected, weakly incised mountain slopes

ELT 15f

Elevation Range

Minimum:

1143 m

Minimum in ft:

3751 ft

Maximum:

1723 m

Maximum in ft:

5654 ft

Median:

1403 m

Median in ft:

4603 ft

Soil Summary:

dominant soils are very shallow and shallow to bedrock, very gravelly sandy loam surfaces over extremely or very gravelly fine sandy loams, lack lime, and have little to modest soil development (organic matter accumulation), other less extensive soils are similar but have pronounced subsoil clay accumulations; unit dominated by Cochise County, Northwestern Part soil survey map units 12 (Budlamp-Rock outcrop complex, 5 to 70 percent slopes), 71 (Romero-Rock outcrop complex, 5 to 60 percent slopes), and 11 (Brunkcow-Chiricahua-Andrada complex, 3 to 20 percent slopes). These units comprise 56%, 22%, 17% and 5% of the ELT, respectively

Geologic Materials:

alluvium, colluvium and residuum associated with the Johnny Lyon Granodiorite (Xgj); aplitic granitoid of Wildhorse Mountain (YXga); and biotite granitoids of Happy Valley area (YXg) which comprise 60%, 23% and 10% of the unit, respectively

Landforms:

moderately to finely dissected, weakly incised pediment surfaces

ELT 15g

Elevation Range

Minimum:

1107 m

Minimum in ft:

3632 ft

Maximum:

1586 m

Maximum in ft:

5205 ft

Median:

1300 m

Median in ft:

4265 ft

Soil Summary:

soil survey data coverage is incomplete for this ELT; 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 Catalina-Rincon igneous metamorphic complex (TXm) and KJb which comprise 98% and 2% of the unit, respectively

Landforms:

moderately to finely dissected, moderately to deeply incised mountain slopes