LOCATION PAROHTOG UTEstablished Series
TAXONOMIC CLASS: Fine-loamy, mixed, superactive, calcareous, mesic Oxyaquic Torriorthents
TYPICAL PEDON: Parohtog loam on a southwest facing 1 percent slope under a saltgrass pasture at an elevation of 5,400 feet. (Colors are for air-dry soil unless otherwise stated.)
A--0 to 2 inches; brown (7.5YR 5/4) loam, dark reddish brown (5YR 3/3) moist; moderate very fine subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; many very fine, common fine roots; common very fine and fine tubular pores; slightly effervescent, carbonates are disseminated; moderately alkaline (pH 8.4); abrupt wavy boundary. (2 to 10 inches thick)
C1--2 to 7 inches; reddish yellow (7.5YR 6/6) loam, reddish brown (5YR 4/4) moist; weak very fine and fine subangular blocky structure; slightly hard, very friable, slightly sticky and slightly plastic; common very fine and fine roots; common very fine and fine tubular pores; slightly effervescent, carbonates are disseminated; moderately alkaline (pH 8.2); clear smooth boundary. (4 to 15 inches thick)
C2--7 to 36 inches; light reddish brown (5YR 6/4) loam, reddish brown (5YR 4/4) moist; weak fine subangular blocky structure; hard, firm, moderately sticky and slightly plastic; common very fine, few fine roots; common very fine and fine tubular pores; slightly effervescent, carbonates are disseminated; moderately alkaline (pH 8.2); gradual smooth boundary. (5 to 29 inches thick)
C3--36 to 60 inches; reddish yellow (5YR 6/6) fine sandy loam, reddish brown (5YR 4/4) moist; massive; slightly hard, very friable, slightly sticky and slightly plastic; few very fine and fine roots; few very fine tubular pores; very slightly effervescent, carbonates are disseminated; moderately alkaline (pH 8.2).
TYPE LOCATION: Uintah County, Utah; about 2 miles south of Gusher on the USGS Fort Duchesne, Utah quadrangle; about 1,500 feet east and 200 feet north of the southwest corner of sec. 25, T.2S., R.1E., USBM; 40 degrees, 16 minutes, 24 seconds north latitude and 109 degrees, 50 minutes, 04 seconds west longitude; NAD 27.
RANGE IN CHARACTERISTICS:
Soil moisture: The soil moisture control section is affected by precipitation that falls throughout the year, with a slight increase in late summer and fall. This soil occurs in both typic aridic and ustic aridic climatic zones. However, because it receives additional run-on and is influenced by a water table, the soil moisture regime is considered to be aridic bordering on ustic.
Mean annual soil temperature: 47 to 51 degrees F
Depth to endosaturation: 20 to 60 inches to an irrigation induced water table during the months of April through December.
Particle size control section: 18 to 35 percent clay
A horizon:
Hue: 5YR or 7.5YR
Value: 5 or 6 dry, 3 or 4 moist
Chroma: 3 to 6
Texture: loam or clay loam
Salinity: 2 to 16 mmhos/cm
Calcium carbonate equivalent: 1 to 15 percent
Reaction: moderately alkaline to very strongly alkaline
C horizon:
Hue: 2.5YR or 5YR
Value: 5 to 7 dry, 4 or 5 moist
Chroma: 3 to 6
Texture: stratified with sandy loam, fine sandy loam, loam, silt loam, and clay loam
Salinity: 2 to 8 mmhos/cm
Calcium carbonate equivalent: 1 to 15 percent
Gypsum: 0 to 2 percent with some pedons containing few to common cylindrical fine gypsum masses in the zone just above the water table
Reaction: moderately alkaline or strongly alkaline. Redoximorphic concentrations: none to few fine distinct strong brown (7.5YR 5/6)
COMPETING SERIES: These are the Mikett, Rustigate and Umbo series.
Mikett and Umbo soils have hue yellower than 5YR in the C horizon (substratum).
Rustigate soils have mean annual soil temperatures greater than 51 degrees F and have a xeric pattern.
GEOGRAPHIC SETTING:
Parent material: alluvium derived from sedimentary and metamorphic rocks
Landform: alluvial flats
Slopes: 0 to 4 percent
Elevation: 4,800 to 5,700 feet
Mean annual precipitation: 5 to 12 inches
Mean annual air temperature: 45 to 49 degrees F.
Frost-free period: 110 to 140 days
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Crib, Jenrid, Ohtog, Paradox, Shotnick, Turzo and the competing Umbo soils. Crib soils are on fan remnants and have a calcic horizon. Jenrid and Shotnick soils have a coarse-loamy particle size control section. Ohtog, Paradox, and Turzo soils are well drained and do not have a water table.
DRAINAGE AND PERMEABILITY: Somewhat poorly and moderately well drained; negligible to low runoff; moderate and moderately slow permeability.
USE AND VEGETATION: These soils are used principally for pasture.
DISTRIBUTION AND EXTENT: Northeastern Utah; LRR D; MLRA 34. The 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 coined.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Particle-size control section: The zone from 10 to 40 inches. (C2 and C3 horizons)
Ochric epipedon: The zone from the surface to a depth of 2 inches. (A horizon)
Endosaturation: The presence of an irrigation induced water table at 20 to 60 inches during the months of April through December.
Taxonomic version: Eighth Edition, 1998.
The CEC activity class was inferred from laboratory data from similar soils in the Uintah Area Soil Survey.