LOCATION BOREHAM UTEstablished Series
TAXONOMIC CLASS: Coarse-loamy, mixed, superactive, mesic Typic Haplocalcids
TYPICAL PEDON: Boreham loam, on a north facing, linear, 1 percent slope in irrigated cropland at an elevation of 5,325 feet. (Colors are for dry soil unless otherwise noted.)
Ap--0 to 11 inches; brown (10YR 5/3) loam, brown (10YR 4/3) moist; weak fine and medium granular structure; slightly hard, friable, slightly sticky and slightly plastic; few coarse and common very fine and fine roots; few medium and many very fine and fine tubular pores; slightly effervescent (8 percent calcium carbonate equivalent), carbonates are disseminated; moderately alkaline (pH 8.0); clear smooth boundary. (2 to 3 inches thick).
Bk1--11 to 26 inches; very pale brown (10YR 7/3) loam, pale brown (10YR 6/3) moist; weak medium subangular blocky structure; hard, friable, slightly sticky and slightly plastic; few medium and common very fine and fine roots; few medium and common very fine and fine tubular pores; strongly effervescent (22 percent calcium carbonate equivalent), carbonates are disseminated and segregated as less than 1 mm thick coatings on undersides of rock fragments; 5 percent fine gravel; moderately alkaline (pH 8.2); clear wavy boundary. (0 to 15 inches thick).
Bk2--26 to 42 inches; very pale brown (10YR 7/3) loam, pale brown (10YR 6/3) moist; weak fine subangular blocky structure; hard, friable, slightly sticky and slightly plastic; few medium and fine and common very fine roots; few medium and common very fine and fine tubular pores; 10 percent gravel; strongly effervescent (27 percent calcium carbonate equivalent), carbonates are segregated as many medium and coarse masses and few hard nodules up to 1/2 inch in diameter and as 1 mm thick coatings on undersides of rock fragments; 10 percent fine gravel; moderately alkaline (pH 8.4); clear wavy boundary. (12 to 47 inches thick).
2Bk3--42 to 72 inches; very pale brown (10YR 8/3) very gravelly sandy loam, very pale brown (10YR 7/3) moist; massive; slightly hard, very friable, nonsticky and nonplastic; few fine and very fine roots; few very fine and fine tubular pores; 35 percent gravel and channers; strongly effervescent (15 percent calcium carbonate equivalent), carbonates are disseminated and segregated as common fine and medium masses and 1 mm thick coatings on the underside of rock fragments; moderately alkaline (pH 8.4).
TYPE LOCATION: Duchesne County, Utah; about 6 miles southwest of Myton; located about 1,800 feet north and 10 feet west of the southeast corner of sec. 19, T. 8 S., R. 17 E., SLBM; Myton SE, Utah USGS quad; lat. 40 degrees 6 minutes 22 seconds N. and long. 110 degrees 2 minutes 22 seconds W., NAD 27
RANGE IN CHARACTERISTICS:
Soil moisture: The soil moisture control section is affected by precipitation that falls evenly through the year with a slight increase in late summer and early fall. Aridic moisture regime.
Mean annual soil temperature: 47 to 50 degrees F.
Mean summer soil temperature: 65 to 68 degrees F.
Depth to calcic horizon: 6 to 13 inches
Depth to lithologic discontinuity: greater than 40 inches to loamy-skeletal materials
Particle-size control section (weighted average): 15 to 18 percent silicate clay, 18 to 35 percent total clay, less than 10 percent rock fragments
A horizon:
Hue: 7.5YR or 10YR
Value: 5 or 6 dry, 3 to 5 moist
Chroma: 2 to 6 dry or moist
Texture: loam and sandy clay loam
Calcium carbonate equivalent: 5 to 10 percent
EC (mmhos/cm): 0 to 4
Reaction: moderately alkaline or strongly alkaline
Bk1 horizon:
Hue: 7.5YR or 10YR
Value: 6 or 7 dry, 4 to 6 moist
Chroma: 3 to 6 dry or moist
Texture: loam, sandy clay loam, and clay loam
Calcium carbonate equivalent: 5 to 20 percent
EC (mmhos/cm): 0 to 4
Reaction: moderately alkaline or strongly alkaline
Gypsum: 0 to 1 percent
Bk2 horizon:
Hue: 7.5YR, 10YR, or 2.5Y
Value: 6 to 8 dry, 4 to 7 moist
Chroma: 2 to 4 dry or moist
Texture: loam, clay loam, and sandy clay loam
Rock fragments: 0 to 10 percent
Calcium carbonate equivalent: 15 to 40 percent
EC (mmhos/cm): 0 to 4
Gypsum: 0 to 1 percent
Reaction: moderately alkaline or strongly alkaline
2Bk horizon:
Hue: 7.5YR, 10YR, or 2.5Y
Value: 5 to 8 dry, 4 to 7 moist
Chroma: 2 to 4 dry or moist
Texture (fine earth): sandy loam, sandy clay loam, or loam modified by 35 to 80 percent rock fragments
Calcium carbonate equivalent: 10 to 20 percent
EC (mmhos/cm): 0 to 4
Gypsum: 0 to 1 percent
Reaction: moderately alkaline or strongly alkaline
2C horizon (when present):
Hue: 7.5YR or 10YR
Value: 6 or 7 dry, 4 to 6 moist
Chroma: 4 to 8 dry or moist
Texture (fine earth): loamy sand, sandy loam, or sandy clay loam modified by 35 to 75 percent rock fragments
EC (mmhos/cm): 0 to 4
Gypsum: 0 to 1 percent
COMPETING SERIES: Current competitors are the Kinan, Nakoy, Nolava, Pagina, and Riemod series. Competitors prior to the 1998 Keys to Soils Taxonomy are the Bluechief, Chroder, Hiko Springs, Kaito, McCutchen, Moffat, Nageezi, Nakai, Nuahs, and the Trook series.
Bluechief, Chroder, Hiko Springs, Kaito, Kinan, McCutchen, Moffat, Nageezi, Nakai, Nakoy, Nuahs, Pagina, and Trook: have less than 18 percent total clay in the series control section.
Nolava and Riemod: have less than 35 percent rock fragments below 40 inches.
GEOGRAPHIC SETTING:
Parent material: loamy alluvium over loamy-skeletal alluvium derived from sedimentary and metamorphic rocks
Landform: fan remnants and strath terraces
Slopes: 0 to 4 percent
Elevation: 4,800 to 5,600 feet
Mean annual air temperature: 45 to 47 degrees F.
Mean annual precipitation: 5 to 8 inches
Frost-free period: 110 to 125 days
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Cobbra, Leeko, Utaline, and the competing Nakoy and Nolava series.
Cobbra soils have ustic aridic soil moisture regimes.
Leeko soils have a natric horizon.
Utaline soils have loamy-skeletal particle-size control sections.
DRAINAGE AND PERMEABILITY: Well drained, negligible and low runoff, moderate permeability.
USE AND VEGETATION: The major uses are rangeland, wildlife habitat, and irrigated cropland. Crops commonly grown are alfalfa and small grains. Potential native vegetation consists of shadscale, winterfat, galleta and Indian ricegrass. This soil has been correlated to the Desert Loam (Shadscale) - 034XY106UT range site in Utah.
DISTRIBUTION AND EXTENT: Northeastern Utah. LRR D, MLRA 34. This series is of moderate extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Bozeman, Montana
SERIES ESTABLISHED: Duchesne County, Uintah Area Soil Survey, Utah. 1998. The name is taken from Lake Boreham Reservoir.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Particle-size control section: The zone from 10 to 40 inches. (Bk1 and Bk2 horizons)
Ochric epipedon: The zone from 11 to 60 inches. (Ap horizon)
Calcic horizon: The zone from 11 to 60 inches. (Bk and 2Bk horizons)
Lithologic discontinuity: Loamy-skeletal materials beginning at 42 inches, the top of the 2Bk3.
Previously, the concept of this soil was a fine-loamy PSCS and was included with the Avalon series. Laboratory data shows a high percentage of clay sized carbonates causing it to have a coarse-loamy PSCS.
ADDITIONAL DATA: Reference sample from pedon 92P107 Duchesne County, Utah 4/93 and partial reference sample from pedon 93P579 Uintah County Utah 12/93. The cation exchange activity class was determined from laboratory data.
Taxonomic version: Eight Edition, 1998.