LOCATION FLYGARE UT+COEstablished Series
TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive Pachic Palecryolls
TYPICAL PEDON: Flygare fine sandy loam, in aspen woodland with understory of grasses and forbs. (Colors are for dry soil unless otherwise noted.)
A1--0 to 2 inches; dark brown (10YR 3/3) loam, very dark brown (10YR 2/2) moist; weak medium granular structure; loose; very friable, slightly plastic; many fine, medium and coarse roots; slightly acid (pH 6.4); abrupt wavy boundary. (0 to 2 inches thick)
A2--2 to 10 inches; brown (10YR 4/3) fine sandy loam, very dark brown (10YR 2/2) moist; weak medium granular structure; loose; very friable, slightly sticky and slightly plastic; many fine, medium and large roots; moderately acid (pH 6.0); clear wavy boundary. (7 to 12 inches thick)
A3--10 to 17 inches; brown (10YR 4/3) loam, very dark brown (10YR 2/2) moist; weak coarse subangular blocky structure parting to moderate medium granular; slightly hard, firm, slightly sticky and slightly plastic; common fine, medium and coarse roots; common fine and medium pores; moderately acid (pH 5.6); abrupt wavy boundary. (0 to 7 inches thick)
A4--17 to 27 inches; brown (10YR 4/3) extremely cobbly loam, very dark brown (10YR 2/2) moist; weak medium subangular blocky structure parting to moderate fine and medium granular; soft, friable, slightly sticky and slightly plastic; common fine, medium and coarse roots; 70 percent cobbles and few stones; moderately acid (pH 5.6); clear irregular boundary. (2 to 12 inches thick)
E--27 to 36 inches; yellowish brown (10YR 5/4) extremely cobbly sandy loam, dark yellowish brown (10YR 3/4) moist; moderate coarse blocky structure parting to fine and medium subangular blocky; slightly hard, friable, slightly sticky and slightly plastic; common fine and medium roots; common medium pores; 70 percent cobbles and few stones; moderately acid (pH 5.7); clear smooth boundary. (2 to 14 inches thick)
Bt--36 to 41 inches; brown (7.5YR 5/4) very cobbly sandy clay loam, dark brown (7.5YR 3/4) moist; moderate coarse blocky structure parting to fine subangular blocky; hard, firm, moderately sticky and moderately plastic; common fine and medium and few coarse roots; common fine pores; 40 percent cobbles and gravel; common moderately thick clay films on faces of peds and thin continuous coats on sand grains; strongly acid (pH 5.1); clear wavy boundary. (5 to 14 inches thick)
BCt1--41 to 50 inches; light brown (7.5YR 6/4) very cobbly sandy loam, brown (7.5YR 4/4) moist; moderate coarse subangular blocky structure parting to fine and medium subangular blocky; hard, firm, moderately sticky and moderately plastic; common fine and medium and few coarse roots; common fine pores; few thin clay films on faces of peds and on sand grains; 45 percent cobbles and gravel; strongly acid (pH 5.3); gradual wavy boundary. (0 to 12 inches thick)
BCt2--50 to 70 inches; light brown (7.5YR 6/4) very cobbly sandy loam, brown (7.5YR 4/4) moist; weak coarse subangular blocky structure parting to fine and medium subangular blocky; slightly hard, friable, slightly sticky and slightly plastic; common fine and medium and few coarse roots; common fine pores; few thin clay films on faces of some peds and sand grains and in some pores; 50 percent cobbles; strongly acid (pH 5.4).
TYPE LOCATION: Wasatch County, Utah; 16.4 miles east of Wasatch County Court House on Lake Creek Road to Uinta National Forest Boundary, then north along a side road for 2.3 miles; NW 1/4 sec. 13, T . 4 S., R. 6 E.
RANGE IN CHARACTERISTICS:
Soil moisture regime: udic
Mean annual soil temperature: 38 to 47 degrees F.
Mean summer soil temperature: 50 to 59 degrees F.
Depth to upper boundary of the argillic horizon: 25 to 45 inches
Combined thickness of A, E, and Bt horizons: 43 to 60 inches or more
Thickness of the mollic epipedon: 20 to 30 inches
Base saturation: 60 to 80 percent
Particle-size control section (weighted averages):
Clay content: 27 to 35 percent
Rock fragment content: 35 to 60 percent
A horizon:
Hue: 10YR or 7.5YR
Value: 3 to 5 dry, 2 or 3 moist
Chroma: 1 to 3, dry and moist
Texture, fine earth fraction: L, FSL
Rock fragments: 0 to 70 percent, mostly cobble
Reaction: strongly acid to slightly acid
E horizon:
Hue: 10YR or 7.5YR
Value: 5 to 7 dry, 3 to 5 moist
Chroma: 2 to 5, dry and moist
Texture, fine earth fraction: L, SL
Rock fragment content: 0 to 70 percent, mostly cobble
Reaction: moderately acid or slightly acid
Bt horizon:
Hue: 10YR to 5YR
Value: 5 or 6 dry, 3 to 5 moist
Chroma: 2 to 6, dry and moist
Texture, fine earth fraction: CL, SCL
Clay content: 27 to 35 percent
Rock fragment content: 35 to 70 percent, mostly gravel and cobble
Reaction: strongly acid to slightly acid
BCt or C horizon:
Hue: 10YR to 5YR
Value: 5 or 6 dry, 3 to 5 moist
Chroma: 3 to 6, dry and moist
Texture, fine earth fraction: SL, L
clay content; 18 to 27 percent
Rock fragment content: 50 to 80 percent, mostly gravel and cobble
Reaction: strongly acid to slightly acid
COMPETING SERIES: These are the Charcol and Northwater series. Similar soils are the Red Spur, Skylick, and Yeljack series.
Charcol soils have hue redder than 2.5YR and have summer soil temperatures of 57 to 59 degrees F.
Northwater soils have a lithic contact and have eluvial horizons.
Red Spur,
Skylick, and
Yeljack soils have fine-loamy particle-size control sections.
GEOGRAPHIC SETTING:
Parent material: glacial drift, alluvium, and colluvium derived from andesite, quartzite, and some limestone, basalt, and shale.
Landform: moraines, mountain slopes, glaciated plateaus,.
Slopes: 3 to 70 percent
Elevation: 6,000 to 10,400 feet
Mean annual air temperature: 36 to 45 degrees F.
Mean summer air temperature: 48 to 57 degrees F.
Mean annual precipitation: 22 to 35 inches.
Frost-free period: 30 to 90 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These Baird Hollow, Clayburn, Dateman, Daybell, Goring, Little Pole, Lucky Star, Poleline and Yeates Hollow soils. Baird Hollow soils have clayey-skeletal particle size control sections. Clayburn soils lack E horizons and have argillic horizons within 24 inches of the soil surface. Daybell, Dateman, and Poleline soils lack argillic horizons. Goring soils have mean summer soil temperatures of more than 59 degrees F. and lack E horizons. Little Pole soils are less than 20 inches deep over bedrock, have a mollic epipedon less than 16 inches thick and lack E horizons. Lucky Star soils have a mollic epipedon less than 16 inches thick. Yeates Hollow soils have a mollic epipedon less than 16 inches thick, lack E horizons and have clay textured argillic horizons.
DRAINAGE AND PERMEABILITY: Well drained; low to medium runoff; moderate permeability.
USE AND VEGETATION: These soils are used for watershed, summer grazing by livestock and wildlife and for aspen production. The potential vegetation is Englemann spruce, Douglas-fir, blue spruce and aspen. The understory is mountain brome, nodding bluegrass, columbine, geranium, and western valerian.
DISTRIBUTION AND EXTENT: High mountain areas of central and northern Utah, and western Colorado. LRR E, MLRA 48A. This series is moderately extensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Bozeman, Montana
SERIES ESTABLISHED: Wasatch County (Sanpete Area), Utah, 1971.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Mollic epipedon (Pachic feature) - The zone of dark colored soils material from the surface to a depth of 27 inches. (A1, A2, A3, and A4 horizons)
Argillic horizon (Pale- feature) - The zone of clay accumulation from a depth of 36 to 70 inches. (Bt, BCt1, and BCt2 horizons)
Keys to Soil Taxonomy: Classified according to the Eighth Edition, 1998
The activity class is presumed based on the general trend of other soils in the area. At the lower end of the range of annual precipitation, these soils are bordering a xeric moisture regime.
ADDITIONAL DATA: Laboratory data is available: correlation sample number 60 Utah 26-56-1-9, lab numbers U611714-U611719 and U621640-43.