ELT 125a

Marshall Peak to Mt Lemmon, including Radio Ridge, Ski Valley, and upper Carter Canyon
670 ha
Area in acres: 
1657 acres
Elevation Range
2275 m
Minimum in ft: 
7463 ft
2789 m
Maximum in ft: 
9151 ft
2518 m
Median in ft: 
8261 ft
Soil Summary: 
detailed soil survey information is not available for this unit; correlates with GES unit 476 characterized by extremely cobbly sandy loams shallow to deep to granite or granite-like bedrock, acid soils lacking lime throughout, minimal soil development, and associated rock outcroppings
Geologic Materials: 
slope alluvium, colluvium and residuum associated with Bolsa Quartzite and Abrigo Formations (Cba), Middle Proterozoic Apache Group and Troy Quartzite (Ya) and Leatherwood quartz diorite (Kqdl). They comprise 72%, 17% and 5% of the unit, respectively
moderately dissected mountain slopes with shallow to deep drainage incision

Map with the ELT 125a polygon highlighted.Photo Point 106, Photo Point 292, Photo Point 297Photo Point 107, Photo Point 287, Photo Point 288, Photo Point 289, Photo Point 290, Photo Point 291Photo Point 293, Photo Point 294, Photo Point 295, Photo Point 296Photo Point 284, Photo Point 285, Photo Point 286Photo Point 299, Photo Point 300Photo Point 298Photo Point 086, Photo Point 088Photo Point 091, Photo Point 093

Landform position classes and corresponding vegetation*

Landform Class Areasort icon Percentage of ELT Vegetation and notes
moderately moist steep slopes 234 ha 35

Doug fir/SW pine/Ponderosa pine and white fir/aspen

very moist steep slopes 202 ha 30

Doug fir/SW pine/Ponderosa pine and white fir/corkbark fir/aspen

moderately dry steep slopes 148 ha 22

Ponderosa pine/silverleaf oak/netleaf oak

very dry steep slopes 29 ha 4

Ponderosa pine/silverleaf oak/netleaf oak

gently sloping ridges and hills 26 ha 4

Doug fir/SW pine/Ponderosa pine/white fir

cool aspect scarps, cliffs, canyons 22 ha 3

Doug fir/SW pine/Ponderosa pine and white fir/aspen