LOCATION GOBINE UTEstablished Series
TAXONOMIC CLASS: Fine-silty, mixed, superactive, frigid Typic Calcixerolls
TYPICAL PEDON: Gobine silt loam - on a 2 percent east-facing slope in rangeland. (When described the soil was dry throughout (colors are for air dry soil unless otherwise noted).
A1--0 to 3 inches; brown (10YR 5/3) silt loam, dark brown (10YR 3/3) moist; weak fine granular structure; soft, very friable, slightly sticky and slightly plastic; many fine and very fine and few medium and coarse roots; moderately calcareous; moderately alkaline (pH 8.4); abrupt smooth boundary. (2 to 8 inches thick)
A2--3 to 7 inches; brown (10YR 5/3) silt loam, dark brown (10YR 3/3) moist; weak medium subangular blocky structure parting to weak fine granular; slightly hard, friable, slightly sticky and slightly plastic; many fine and very fine, few medium and coarse roots; many very fine interstitial pores; moderately calcareous; moderately alkaline (pH 8.4); clear smooth boundary. (0 to 16 inches thick)
Bw--7 to 21 inches; brown (10YR 5/3) silt loam, dark yellowish brown (10YR 4/4) moist; weak medium subangular blocky structure; hard, friable, slightly sticky and moderately plastic; few fine and medium roots; few fine and very fine interstitial pores; moderately calcareous, carbonates disseminated; moderately alkaline (pH 8.4); clear wavy boundary. (10 to 19 inches thick)
Bk1--21 to 33 inches; very pale brown (10YR 7/3) silt loam, light yellowish brown (10YR 6/4) moist; weak fine and medium subangular blocky structure; very hard, friable, slightly sticky and moderately plastic; few fine and medium roots; many very fine pores; strongly calcareous, carbonates disseminated; moderately alkaline (pH 8.3); gradual wavy boundary. (9 to 24 inches thick)
Bk2--33 to 48 inches; very pale brown (10YR 7/3) silt loam, yellowish brown (10YR 5/4) moist; weak coarse subangular blocky structure; slightly hard, friable, moderately sticky and moderately plastic; few fine roots; many fine and very fine interstitial pores; strongly calcareous, carbonates disseminated; moderately alkaline (pH 8.3); gradual wavy boundary. (10 to 34 inches thick)
BCk--48 to 60 inches; pinkish gray (7.5YR 7/2) loam, brown (7.5YR 5/4) moist; massive; slightly hard, friable, slightly sticky and moderately plastic; few fine roots, many fine interstitial pores; strongly calcareous, carbonates disseminated; moderately alkaline (pH 8.3).
TYPE LOCATION: Rich County, Utah; about 350 feet west and 2,250 feet north of the southeast corner of sec. 21, T.14N., R.7E.
RANGE IN CHARACTERISTICS: The thickness of the solum and depth to the calcic horizon range from 21 to 29 inches. Gravel ranges rom 0 to 10 percent in the control section. The mean annual soil temperature ranges from 40 degrees to 44 degrees F., and the mean summer soil temperature is 61 degrees to 64 degrees F. The soil is dry in all parts of the moisture control section for 45 to 80 or more consecutive days within the 4 months following the summer solstice, and is moist for 45 to 60 or more consecutive days within the 4 months following the winter solstice in 6 out of 10 years.
The A horizon has hue of 10YR through 5YR, value of 4 or 5 dry, and chroma of 2 or 3 moist and dry.
The Bw horizon has hue of 10YR through 5YR, value of 5 through 7 dry, 4 through 6 moist, and chroma of 2 through 8 moist and dry. It is moderately alkaline or strongly alkaline.
The Bk and BCk horizons have hue of 10YR through 5YR, value of 5 through 8 dry, 4 through 6 moist, and chroma of 2 through 8 moist and dry. It commonly is silt loam and less commonly loam. In some pedons there are loamy sand and very gravelly sandy loam layers below a depth of 40 inches. It is moderately alkaline or strongly alkaline.
COMPETING SERIES: These are the Church Springs and Joes series in the same family and the similar Watkins Ridge series. Church Springs soils have an argillic horizon and are 10 to 20 inches to the calcic horizon. Joes soils lack a cambic horizon and have a calcic horizon immediately below the mollic epipedon at a depth of 8 to 18 inches. Watkins Ridge soils are fine-loamy.
GEOGRAPHIC SETTING: Gobine soils are on uplands and floodplains at elevations of 6,400 to 6,800 feet. The soils formed in alluvium derived dominantly from sandstone, conglomerate, and limestone. Slopes are 1 to 10 percent. The average annual precipitation is 14 to 16 inches, the mean annual temperature is 40 degrees to 44 degrees F., and the mean summer temperature is 59 degrees to 62 degrees F. Freeze-free season is 75 to 90 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Thatcher, Duckree, Dagan, Lakridge, Kearl, and Ellett soils. Duckree and Dagan soils have more than 35 percent rock fragments in the particle-size control section. Thatcher soils have an argillic horizon. Lakridge soils have a petrocalcic horizon. Ellett soils lack a calcic horizon and are shallow to weathered shale.
DRAINAGE AND PERMEABILITY: Well drained; medium runoff; moderately slow permeability.
USE AND VEGETATION: Used mainly for rangeland and nonirrigated cropland. Small grains are the principal crops. Native vegetation is bluebunch wheatgrass, bitterbrush, Indian ricegrass, and big sagebrush.
DISTRIBUTION AND EXTENT: Gobine soils are of moderate extent in northeastern Utah.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Bozeman, Montana
SERIES ESTABLISHED: Rich County, Utah, 1980.