LOCATION BALDY AZEstablished Series
TAXONOMIC CLASS: Coarse-loamy, mixed, superactive, nonacid Typic Cryorthents
TYPICAL PEDON: Baldy cobbly fine sandy loam, forest. (Colors for dry conditions unless otherwise noted.)
O1--1 inch to 0; fir, aspen and spruce litter.
A--0 to 4 inches; light brownish gray (10YR 6/2) cobbly fine sandy loam, very dark grayish brown (10YR 3/2) moist; weak medium and fine granular structure; soft, friable, nonsticky and slightly plastic; abundant fine roots; many fine interstitial pores; 15 to 20 percent coarse fragments; noneffervescent; moderately acid (pH 6.0); clear smooth boundary. (2 to 5 inches thick)
C1--4 to 12 inches; pinkish gray (7.5YR 7/2) cobbly fine sandy loam, brown (7.5YR 4/2) moist; weak medium granular structure; soft, very friable, nonsticky and slightly plastic; abundant fine and very fine and few coarse roots; common fine interstitial pores; 15 to 20 percent gravel; noneffervescent; moderately acid (pH 6.0); gradual wavy boundary. (6 to 13 inches thick)
C2--12 to 18 inches; very pale brown (10YR 7/3) cobbly fine sandy loam, brown (10YR 4/3) moist; massive; slightly hard, friable, slightly sticky and slightly plastic; plentiful fine and coarse roots; common fine interstitial and tubular pores; 20 to 25 percent coarse fragments; noneffervescent; moderately acid (pH 6.0); gradual wavy boundary. (6 to 12 inches thick)
C3--18 to 32 inches; light gray (10YR 7/2) gravelly sandy loam, brown (10YR 5/3) moist, with few fine faint yellowish brown (10YR 5/6) mottles; massive; slightly hard, friable, slightly sticky and slightly plastic; plentiful fine and coarse roots; common fine tubular pores; 25 to 30 percent coarse fragments; noneffervescent; moderately acid (pH 6.0); gradual wavy boundary. (12 to 18 inches thick)
C4--32 to 42 inches; yellowish brown (10YR 5/4) cobbly sandy loam, dark yellowish brown (10YR 4/4) moist, with few fine faint yellowish brown (10YR 5/6) mottles; massive; slightly hard, friable, nonsticky and nonplastic; plentiful coarse roots; common fine interstitial and tubular pores; 30 to 40 percent coarse fragments noneffervescent; moderately acid (pH 6.0); gradual wavy boundary. (10 to 30 inches thick)
TYPE LOCATION: On mountain slopes east of Hurricane Lake, SE part of sec. 12, T.5N., R.26E., Apache County, Arizona.
RANGE IN CHARACTERISTICS:
Coarse fragment content of the control section: averages less than 35 percent by volume.
Reaction: medium to slightly acid.
Mean annual soil temperature: 35 degrees F. to 43 degrees F.
Mean summer temperature: less than 59 degrees F.
Soil moisture: Udic ustic
A horizon
Hue: 10YR and 7.5YR
Value: 5.5 and 6 dry and 3 or greater moist
Chroma: 2 and 3
Texture: cobbly loam, stony loam, cobbly fine sandy loam, and stony fine sandy loam.
C horizon
Hues: 10YR and 7.5YR
Value: 5.5 to 7 dry and 4 and 5 moist
Chroma: 2 through 4
Texture of the control section: sandy loam, light loam, cobbly sandy loam, cobbly loam, gravelly sandy loam, stony sandy loam and stony loam.
COMPETING SERIES: There are no competing series.
GEOGRAPHIC SETTING: The Baldy soils occur on 8 percent undulating to 65 percent steep mountain slopes. The regolith consists of medium and moderately coarse-textured materials from rhyolite and andesite with some influence from basalt and ash. These soils occur at elevations of 9,000 to 11,500 feet in a sub-alpine climate. The average annual precipitation ranges from 30 to 40 inches. The mean annual temperature ranges from 38 degrees F. to 45 degrees F. and the frost-free season ranges from 70 to 85 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These include the Gordo, Sponseller, Sizer, Bandera and Ess series. The Gordo and Sponseller soils both have argillic horizons and are moderately fine-textured.
DRAINAGE AND PERMEABILITY: Well-drained with medium runoff. Permeability is moderately rapid to rapid.
USE AND VEGETATION: Used for the production of timber and wildlife with some grazing to livestock. Vegetation consists of Douglas fir, Engleman spruce, ponderosa pine, white pine and aspen, with an understory of mountain muhly, mountain brome, mountain June grass and Sitanian.
DISTRIBUTION AND EXTENT: East central Arizona and possibly New Mexico. The series is moderately extensive. MLRA 39.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Phoenix, Arizona
SERIES ESTABLISHED: Fort Apache Indian Reservation Area (083), Arizona, 1971.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - the zone from the surface to 4 inches (A horizon)
Classified according to Keys to Soil Taxonomy Ninth Edition, 2003