LOCATION HUNTSMAN                UT

Established Series
Rev. LDS/CSW/JWB
03/2011

HUNTSMAN SERIES

The Huntsman series consists of very deep, well drained soils that formed in alluvium derived from sedimentary rock. Huntsman soils are in drainageways and on flood-plain steps. Slopes range from 0 to 6 percent. Mean annual precipitation is about 19 cm and the mean annual temperature is about 9.5 degrees C.

TAXONOMIC CLASS: Coarse-loamy, mixed, superactive, mesic Fluventic Haplocambids

TYPICAL PEDON: Huntsman loamy fine sand, on a west facing, convex, 5 percent slope in rangeland at an elevation of 1,250 meters. (Colors are for dry soil unless otherwise noted.) The surface is covered by about 5 percent gravel.

A--0 to 13 cm; light brown (7.5YR 6/4) loamy fine sand, brown (7.5YR 4/4) moist; weak fine subangular blocky structure; very friable, soft, nonsticky, nonplastic; few coarse and medium and common fine and very fine roots; many very fine interstitial and tubular pores; 5 percent gravel; very slightly effervescent, carbonates are finely disseminated; moderately alkaline (pH 7.9); clear smooth boundary. (10 to 20 cm thick)

Bw--13 to 74 cm; light brown (7.5YR 6/4) very fine sandy loam, brown (7.5YR 5/4) moist; weak medium and fine subangular blocky structure; very friable, slightly hard, slightly sticky, slightly plastic; few coarse and medium and common fine and very fine roots; common very fine tubular pores; strongly effervescent, carbonates are finely disseminated; moderately alkaline (pH 8.2); abrupt smooth boundary. (11 to 61 cm thick)

C1--74 to 109 cm; pink (7.5YR 7/4) loamy fine sand, brown (7.5YR 5/4) moist; single grain; loose, nonsticky, nonplastic; few medium and fine and common very fine roots; few fine and many very fine interstitial pores; 1 percent cobbles, 10 percent gravel; very slightly effervescent, carbonates are finely disseminated; moderately alkaline (pH 8.0); abrupt smooth boundary. (20 to 47 cm thick)

C2--109 to 183 cm; light yellowish brown (10YR 6/4) gravelly fine sandy loam, yellowish brown (10YR 5/4) moist; massive; very friable, slightly hard, slightly sticky, slightly plastic; few fine and very fine roots; common very fine tubular pores; 2 percent cobbles, 15 percent gravel; very slightly effervescent, carbonates are finely disseminated; moderately alkaline (pH 8.3).

TYPE LOCATION: Emery County, Utah; about 8 kilometers (5 miles) south of Green River town; located about 500 feet north of the center of sec. 4, T. 22 S., R. 16 E.; Green River, Utah USGS quad; lat. 38 degrees 55 minutes 40 seconds N. and long. 110 degrees 9 minutes 47 seconds W., NAD 83.

RANGE IN CHARACTERISTICS:
Soil moisture: The soil moisture control section is usually dry, but intermittently moist during late summer and early fall. Aridic moisture regime.
Mean annual soil temperature: 8.3 to 12.8 degrees C

Particle-size control section (weighted averages):
Clay content: 5 to 18 percent
Rock fragment content: 0 to 15 percent; dominantly gravel, with up to 5 percent cobbles and stones

A horizon:
Hue: 10YR or 7.5YR
Value: 5 to 7 dry, 4 or 5 moist
Chroma: 2 or 3 dry or moist
Texture: loamy fine sand, fine sandy loam, very fine sandy loam, gravelly fine sandy loam
Clay content: 3 to 20 percent
Rock fragments: 0 to 35 percent total; 0 to 35 percent gravel, 0 to 5 percent cobbles
Calcium carbonate equivalent: 1 to 15 percent
Gypsum content: 0 to 4 percent
EC (mmhos/cm): 0 to 4
SAR: 0 to 5
Reaction: slightly alkaline to strongly alkaline

Bw horizon:
Hue: 10YR or 7.5YR
Value: 5 to 7 dry, 4 to 6 moist
Chroma: 3 to 6 dry or moist
Texture: fine sandy loam, gravelly fine sandy loam, loam, gravelly loam, sandy loam, very fine sandy loam, loamy fine sand, gravelly sandy clay loam
Clay content: 1 to 25 percent
Rock fragments: 0 to 35 percent total; 0 to 35 percent gravel, 0 to 5 percent cobbles
Calcium carbonate equivalent: 1 to 15 percent
Gypsum content: 0 to 4 percent
EC (mmhos/cm): 0 to 8
SAR: 0 to 8
Reaction: slightly alkaline to strongly alkaline

C horizons:
Hue: 2.5Y to 7.5YR
Value: 5 to 7 dry, 4 to 6 moist
Chroma: 2 to 6 dry or moist
Texture: fine sandy loam, gravelly fine sandy loam, loam, loamy fine sand, very gravelly loamy fine sand, cobbly fine sandy loam, loamy sand, cobbly sandy loam, extremely gravelly coarse sandy loam. These textures may be stratified.
Clay content: 1 to 27 percent
Rock fragments: 0 to 80 percent in any individual horizon; averages less than 15 percent rock fragments which are dominantly gravel and may include up to 25 percent cobbles and up to 5 percent stones
Calcium carbonate equivalent: 1 to 15 percent
Gypsum content: 0 to 5 percent
EC (mmhos/cm): 0 to 8
SAR: 0 to 8
Reaction: slightly alkaline to strongly alkaline

COMPETING SERIES: there are no other competing series in this family.

GEOGRAPHIC SETTING:
Parent material: alluvium derived from calcareous sedimentary rocks
Landform: flood-plain steps, drainageways
Slopes: 0 to 6 percent
Elevation: 1,219 to 1,890 meters
Mean annual temperature: 7.2 to 11.7 degrees C
Mean annual precipitation: 15 to 23 cm
Precipitation pattern: Wettest months are July to October and driest months are December and June.
Frost-free period: 120 to 160 days.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Garley, Green River, Ravola, and Toddler series. The Garley soils have an active CEC class and SAR of 13 to 300 and are under black greasewood. The Green River soils have a water table at 52 to 152 cm and are under Fremont cottonwoods. The Ravola soils are fine-silty and are under shadscale black greasewood. The Toddler soils are fine-loamy and are under black greasewood.

DRAINAGE AND PERMEABILITY: Well drained, low or very low runoff, moderate permeability, flooded for brief, rare periods during the months of March to October. No seasonal high water table within a depth of 150 cm.

USE AND VEGETATION: Grazing and wildlife habitat. Native vegetation includes black greasewood, shadscale, rabbitbrush, Indian ricegrass, bottlebrush squirreltail and sand dropseed. In Utah this soil is correlated to Loamy Bottom (Basin Big Sagebrush) R034XY009UT ecological site.

DISTRIBUTION AND EXTENT: Central Utah, Warm Central Desertic Basins and Plateaus; LRR D, MLRA 34B; small extent. About 6,400 acres (2,600 hectares) in Emery County.

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Bozeman, Montana

SERIES ESTABLISHED: Emery County, Utah, Emery Area, Utah, Parts of Emery, Carbon, Grand, and Sevier Counties soil survey area, 2011. Named after the current Utah state governor; connotes a good hunting ground.

REMARKS:
Diagnostic horizons and features recognized in this pedon are:
Series control section: The zone from 0 to 200 cm.
Particle-size control section: The zone from 25 to 100 cm. (parts of Bw and C1 horizons)
Ochric epipedon: The zone from 0 to 13 cm. (A horizon)
Cambic horizon: The zone from 13 to 74 cm. (Bw horizon)
Fluventic feature: an irregular decrease in organic carbon content from 25 to 125 cm.

The assignment of the cation-exchange activity class is inferred from lab data from similar soils in the surrounding area.

Taxonomic Version: Classified according to Keys to Soil Taxonomy, Eleventh Edition, 2010.

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National Cooperative Soil Survey
U.S.A.