LOCATION DROMEDARY UTEstablished Series
TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive Mollic Haplocryalfs
TYPICAL PEDON: Dromedary gravelly loam, on a north facing convex, 52 percent slope in Douglas fir at an elevation of 7600 feet. (Colors are for moist soil unless otherwise noted.) When described on September 26, 1974, the soil was dry throughout.
There are about 3 inches of leaves, twigs, and needles on the surface.
A--0 to 6 inches; very dark grayish brown (10YR 3/2) gravelly loam, brown (10YR 5/3) dry; moderate fine granular structure; soft, very friable, slightly sticky and slightly plastic; common very fine, fine and medium roots; 20 percent gravel and 5 percent cobbles; slightly acid (pH 6.5); abrupt wavy boundary (4 to 7 inches thick).
E--6 to 22 inches; brown (10YR 4/3) very cobbly sandy loam, pale brown (10YR 6/3) dry; weak medium subangular blocky structure; soft, very friable, slightly sticky and slightly plastic; common very fine, fine and medium roots; many fine interstitial pores; 20 percent cobbles and 20 percent gravel; slightly acid (pH 6.5); gradual wavy boundary (10 to 18 inches thick).
Bt/E--22 to 44 inches; 60 percent Bt part is brown (10YR 4/3) very cobbly sandy clay loam, yellowish brown (10YR 5/4) dry; moderate medium and coarse subangular blocky structure; slightly hard, firm, moderately sticky and moderately plastic; few faint clay films on faces of peds. 40 percent E part is brown (10YR 4/3) very cobbly sandy loam, pale brown (10YR 6/3) dry; weak medium subangular blocky structure; soft, friable, slightly sticky and slightly plastic. Both Bt and E have few very fine, fine and medium roots; many fine tubular pores; 20 percent gravel and 15 percent cobbles; slightly acid (pH 6.5); clear wavy boundary.
Bt1--44 to 51 inches; brown (10YR 4/3) very cobbly sandy clay loam, yellowish brown (10YR 5/4) dry; moderate fine and coarse subangular blocky structure; hard, firm, moderately sticky and moderately plastic; few very fine, fine and medium roots; many very fine tubular pores; common thin clay films on faces of peds; 35 percent gravel and 20 percent cobbles; slightly acid (pH 6.5); abrupt wavy boundary (5 to 15 inches thick).
Bt2--51 to 60 inches; dark brown (10YR 3/3) very cobbly sandy clay loam, brown (10YR 5/3) dry; massive; hard, firm, moderately sticky and moderately plastic; few very fine, fine and medium roots; 30 percent gravel and 25 percent cobbles; slightly acid (pH 6.5).
TYPE LOCATION: Salt Lake County, Utah; about 1/2 mile west of Reynolds Flat; located about 850 feet east and 2,300 feet south of the northwest corner of sec. 18, T. 2 S., R. 3 E; Mount Aire, Utah USGS quad; lat. 40 degrees 38 minutes 38 seconds N. and long. 111 degrees 29 minutes 32 seconds W., NAD 1927
RANGE IN CHARACTERISTICS:
Soil moisture regime: Udic.
Mean annual soil temperature: 37 to 42 degrees F.
Mean summer soil temperature: 50 to 58 degrees F.
Surface rock fragments: 5 percent cobbles and 20 percent gravel
Depth to lithic contact: Greater than 60 inches.
Thickness of the ochric epipedon: 4 to 7 inches
Particle-size control section: 27 to 35 percent clay and 35 to 60 percent rock fragments
A horizon:
Hue: 10YR or 7.5YR
Value: 2 or 3 moist, 3 to 5 dry
Chroma: 2 or 3 moist and dry
Rock fragments: 15 to 35 percent
Reaction: slightly acid or neutral
E horizon:
Hue: 10YR or 7.5 YR
Value: 3 to 5 moist, 5 to 7 dry
Chroma: 2 or 3 moist and dry
Texture: grv-sl, cbv-sl
Rock fragments: 35 to 60 percent
Reaction: slightly acid or neutral
Bt horizon:
Hue: 10YR or 7.5YR
Value: 3 to 5 moist, 5 to 7 dry
Chroma: 2 or 4 moist and dry
Texture: cbv-scl, grv-scl
Rock fragments: 35 to 60 percent
Reaction: slightly acid or neutral
COMPETING SERIES: These are the
Guiser,
Jonda,
Judkins,
Namon,
Rocko,
Tamred,
Timberlin, and
Wapshilla series.
Guiser: has a Xeric moisture regime and does not have an eluvial horizon.
Jonda: has a xeric moisture regime and has carbonates at 10 to 21 inches.
Judkins, Tamred, and Timberlin: have bedrock at 20 to 40 inches
Namon: has bedrock at 40 to over 60 inches and the upper boundary of the Bt is 24 to 40 inches.
Rocko: has an ustic moisture regime with annual precipitation of 20 to 24 inches.
Wapshilla: do not have eluvial horizons and formed in loess mixed with basalt alluvium.
GEOGRAPHIC SETTING:
Parent material: Colluvium and till derived from sedimentary rocks.
Landform: Mountain slopes, dominantly north facing
Slopes: 15 to 70 percent
Elevation: 5,600 to 10,200 feet
Mean annual air temperature: 35 to 40 degrees F.
Mean annual precipitation: 22 to 35 inches.
Wettest months: April through June.
Driest months: August and September
Frost-free period: 20 to 60 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Crandall,
Lucky Star,
Parkcity and
Starley series.
Crandall soils are dominantly south facing under sagebrush.
Lucky Star and Parkcity are dominantly east and west facing under aspen.
Starley soils are shallow over bedrock.
DRAINAGE AND PERMEABILITY: Well drained, medium to high runoff, moderate permeability.
USE AND VEGETATION: The major use is wildlife habitat. Vegetation is Douglas fir, White fir, and aspen with an understory of Mountain Brome and some forbs. In Utah this is a High Mountain Loam (Douglas fir) woodland site.
DISTRIBUTION AND EXTENT: North Central Utah. LRR E, MLRA 47. This series is of moderate extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Bozeman, Montana
SERIES ESTABLISHED: Salt Lake County, 2000; Summit Area soil survey. The name is based on Dromedary Peak.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon: The zone from 0 to 6 inches. (A Horizon)
Argillic horizon: The zone from 22 to 60 inches. (Bt/E, Bt1, and Bt2 horizons)
Keys to Soil Taxonomy: Eighth Edition, 1998
ADDITIONAL DATA: