LOCATION TOLIVER UTEstablished Series
TAXONOMIC CLASS: Loamy-skeletal, siliceous, superactive, frigid Torriorthentic Haplustolls
TYPICAL PEDON: Toliver extremely stony fine sandy loam, on a south facing, linear, 70 percent slope in pinyon-juniper at an elevation of 7,800 feet. (Colors are for dry soil unless otherwise noted.)
The surface is covered by 15 percent channers, 25 percent flagstones, and 10 percent stones.
A--0 to 7 inches; yellowish brown (10YR 5/4) extremely stony fine sandy loam, dark brown (10YR 3/3) moist; weak fine subangular blocky structure parting to weak very fine granular; soft, very friable, nonsticky and nonplastic; many very fine and fine, common medium roots; many very fine and fine, few medium interstitial pores; 10 percent channers and 10 percent flagstones; slightly effervescent, carbonates are disseminated; moderately alkaline (pH 8.0); clear wavy boundary. (7 to 12 inches thick)
C1--7 to 19 inches; brown (10YR 5/3) channery fine sandy loam, dark grayish brown (10YR 4/2) moist; weak fine and very fine subangular blocky structure; soft, very friable, slightly sticky and slightly plastic; common very fine, fine, and medium, few coarse roots; common very fine and fine interstitial pores; 10 percent flagstones, 20 percent channers; slightly effervescent, carbonates are disseminated; moderately alkaline (pH 8.1); gradual wavy boundary.
C2--19 to 34 inches; pale brown (10YR 6/3) very flaggy fine sandy loam, brown (10YR 4/3) moist; weak medium through very fine subangular blocky structure; slightly hard, very friable slightly sticky and slightly plastic; common very fine, fine, and medium, few coarse roots; common very fine and fine interstitial pores; 15 percent channers, 20 percent flagstones, 5 percent stones; slightly effervescent, carbonates are disseminated; moderately alkaline (pH 8.2); gradual irregular boundary.
C3--34 to 47 inches; pale brown (10YR 6/3) very flaggy fine sandy loam, brown (10YR 5/3) moist; weak medium and fine subangular blocky structure; slightly hard, very friable, slightly sticky and slightly plastic; common very fine, fine, and medium, few coarse roots; common very fine, few fine, and medium interstitial pores; 5 percent stones, 25 percent flagstones and 15 percent channers; slightly effervescent, carbonates are disseminated; moderately alkaline (pH 8.2); gradual irregular boundary.
C4--47 to 59 inches; pale brown (10YR 6/3) very flaggy fine sandy loam, brown (10YR 4/3) moist; massive; loose, very friable, slightly sticky and slightly plastic; few very fine and coarse and common fine, and medium roots; 5 percent stones, 25 percent flagstones, and 15 percent channers; slightly effervescent, carbonates are disseminated; moderately alkaline (pH 8.2). (combined thickness of C horizons range from 28 to 53 inches thick)
R--59 inches; unweathered sandstone bedrock.
TYPE LOCATION: Uintah County, Utah; about 1/4 mile south of Stuntz Ridge; located about 2,300 feet south and 1,400 feet west of the northeast corner of sec. 23, T.5S., R.25E., SLBM; Snake John Reef, Utah-Colorado USGS quad; lat. 40 degrees 22 minutes 19 seconds N. and long. 109 degrees 3 minutes 51 seconds W., NAD 27
RANGE IN CHARACTERISTICS:
Soil moisture: The soil moisture control section is affected by precipitation that falls evenly throughout the year with a slight increase in late summer and early fall. Ustic moisture regime bordering on aridic.
Mean annual soil temperature: 44 to 47 degrees F.
Surface rock fragments: 35 to 60 percent (predominantly stones and flagstones)
Depth to lithic contact: 40 to 60 inches to sandstone
Thickness of the mollic epipedon: 7 to 12 inches
Particle-size control section: 5 to 18 percent clay; 35 to 60 percent rock fragments (predominantly flagstones and channers from sandstone)
A horizon:
Hue: 7.5YR or 10YR
Value: 2 or 3 moist
C horizon:
Hue: 7.5YR or 10YR
Value: 5 or 6 dry, 4 or 5 moist
Chroma: 3 to 6
Texture: CN-FSL, FLV-FSL
Calcium carbonate equivalent: 1 to 10 percent
COMPETING SERIES: There are no competing series in this family.
GEOGRAPHIC SETTING:
Parent material: loamy-skeletal colluvium derived from sandstone
Landform: hillslopes
Slopes: 50 to 80 percent
Elevation: 6,500 to 7,800 feet
Mean annual air temperature: 42 to 45 degrees F.
Mean annual precipitation: 12 to 16 inches
Frost-free period: 90 to 110 days
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Clapper, Cortyzack, Duffymont, and Walknolls series.
Clapper soils occur on fan remnants, are very deep, and have a calcic horizon.
Cortyzack soils occur on hillslopes, and have a fine-loamy particle-size control section, and are very deep.
Duffymont and Walknolls soils occur on hillslopes and are shallow to bedrock.
DRAINAGE AND PERMEABILITY: Well drained, medium runoff, moderately rapid permeability.
USE AND VEGETATION: The major uses are wildlife habitat and recreation. The native potential plant community is pinyon pine, Utah juniper, bluebunch wheatgrass, black sagebrush, antelope bitterbrush, birchleaf mountainmahogany, and Indian ricegrass. These soils have been correlated to Upland Very Steep Stony Loam (Pinyon-Juniper) - 047CY340UT range sites in Utah.
DISTRIBUTION AND EXTENT: Northeastern Utah. LRR E, MLRA 47. This series is of small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Bozeman, Montana
SERIES ESTABLISHED: Uintah county, Uintah Area Soil Survey, Utah, 1998. The name is from a nearby geographic location.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Particle-size control section: The zone from 10 to 40 inches. (C1, C2, and C3 horizons)
Mollic epipedon: The zone from 0 to 7 inches. (A horizon)
Lithic contact: Unweathered sandstone bedrock at 59 inches. (R layer)
The cation exchange activity class was inferred from laboratory data from similar soils in the Uintah Area Soil Survey.
The surface texture modifier was determined following the guidelines outlined in the Utah document, "Procedures for Distributing Rock Fragments on the Surface Layer into the Upper 6 inches of Soil and Subsequent Naming of Map Units, April 1979."
The classification was changed from Torriorthentic Haploborolls to frigid Torriorthentic Haplustolls 12/98.
Taxonomic version: Eighth Edition, 1998.