LOCATION RIEMOD UTEstablished Series
TAXONOMIC CLASS: Coarse-loamy, mixed, superactive, mesic Typic Haplocalcids
TYPICAL PEDON: Riemod loam, on an east facing, linear, 1 percent slope in shadscale and Indian ricegrass at an elevation of 5,160 feet. (Colors are for dry soil unless otherwise noted.)
A1--0 to 3 inches; light brown (7.5YR 6/4) loam, dark brown (7.5YR 3/4) moist; moderate thin platy structure parting to moderately very fine subangular blocky; slightly hard, very friable, nonsticky and nonplastic; few very fine, fine and medium roots; many very fine and fine vesicular pores; slightly effervescent, carbonates are disseminated; strongly alkaline (pH 8.8); abrupt smooth boundary.
A2--3 to 6 inches; light brown (7.5YR 6/4) loam, brown (7.5YR 4/4) moist; weak thin platy structure parting to moderate very fine subangular blocky; slightly hard, friable, slightly sticky and slightly plastic; common very fine, few fine roots; common very fine, few fine and medium tubular pores; slightly effervescent, carbonates are disseminated; strongly alkaline (pH 8.6); clear smooth boundary. (combined thickness of the A horizons is 2 to 6 inches)
Bw--6 to 16 inches; light brown (7.5YR 6/4) loam, brown (7.5YR 4/4) moist; weak medium subangular blocky structure parting to moderate very fine and fine subangular blocky; slightly hard, friable, moderately sticky and moderately plastic; few very fine and fine roots; common very fine and fine, few medium tubular pores; slightly effervescent, carbonates are disseminated; moderately alkaline (pH 8.4); clear wavy boundary. (6 to 10 inches thick)
Bk--16 to 40 inches; pink (7.5YR 7/3) clay loam, brown (7.5YR 5/4) moist; weak coarse subangular blocky structure parting to moderate fine and medium subangular blocky; hard, firm, moderately sticky and moderately plastic; few very fine and fine roots; common very fine, few medium tubular pores; strongly effervescent, carbonates are disseminated and segregated as common fine and medium irregular masses; moderately alkaline (pH 8.0); gradual broken boundary. (24 to 37 inches thick)
Bky--40 to 57 inches; pink (7.5YR 7/3) clay loam, brown (7.5YR 5/3) moist; massive; hard, firm, moderately sticky and moderately plastic; common very fine, few fine roots; common very fine, few fine and medium tubular pores; few irregular fine masses of gypsum; strongly effervescent, carbonates are disseminated and segregated in few irregular fine and medium masses; moderately alkaline (pH 8.0); clear smooth boundary. (0 to 17 inches thick)
BCy--57 to 63 inches; pink (7.5YR 7/3) clay loam, light brown (7.5YR 6/4) moist; massive, hard, firm, moderately sticky and moderately plastic; few very fine roots; common very fine, few fine tubular pores; few irregular fine masses of gypsum and common medium gypsum crystals; slightly effervescent, carbonates are disseminated; moderately alkaline (pH 8.0).
TYPE LOCATION: Uintah County, Utah; about 3.2 miles southeast of Naples; located about 500 feet north and 1,100 feet west of the southeast corner of sec. 17, T. 5 S., R. 22 E., SLBM; Naples, Utah USGS quad; lat. 40 degrees 22 minutes 37 seconds N. and long. 109 degrees 27 minutes 49 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 the late summer and fall. The moisture regime is typic aridic.
Mean annual soil temperature: 47 to 49 degrees F.
Depth to calcic horizon: 8 to 16 inches
Depth to gypsum accumulations: 40 to 48 inches
Particle-size control section: 13 to 18 percent silicate clay, total clay ranges from 18 to 30 percent
A horizon:
Hue: 7.5YR or 10YR
Value: 3 to 5 moist
Chroma: 3 or 4
Calcium carbonate equivalent: 5 to 10 percent
EC (mmhos/cm): 0 to 2
Reaction: moderately alkaline or strongly alkaline
Bw horizon:
Hue: 7.5YR or 10YR
Value: 5 to 7 dry, 4 or 5 moist
Chroma: 3 or 4
Calcium carbonate equivalent: 5 to 10 percent
EC (mmhos/cm): 0 to 4
Reaction: moderately alkaline or strongly alkaline
Bk and Bky horizon:
Hue: 7.5YR or 10YR
Value: 6 to 8 dry, 5 to 7 moist
Chroma: 2 to 4
Texture: loam or clay loam with 13 to 18 percent silicate clay
Rock fragments: 0 to 5 percent gravel from sandstone and quartzite
Calcium carbonate equivalent: 15 to 40 percent
EC (mmhos/cm): 2 to 4
Gypsum: 0 to 2 percent (in Bky)
Reaction: moderately alkaline or strongly alkaline
BCy horizon:
Hue: 7.5YR or 10YR
Value: 6 to 8 dry, 5 or 6 moist
Chroma: 3 or 5
Texture: loam or clay loam
Rock fragments: 0 to 5 percent gravel from sandstone and quartzite
Calcium carbonate equivalent: 5 to 15 percent
EC (mmhos/cm): 2 to 8
Gypsum: 5 to 10 percent
COMPETING SERIES: Current competitors are the Boreham, Kinan, Nakoy, Nolava, and Pagina series. Competitors prior to the Seventh Edition, 1996 Keys to Soil Taxonomy are the Bluechief, Hiko Springs, Kaito, McCutchen, Moffat, Nakai, and the Nuahs series.
All these series except the Boreham and Nolava series have less than 18 percent total clay in the particle size control section.
Boreham soils have than 35 percent rock fragments below 40 inches.
Nolava soils do not have gypsum accumulations in the series control section.
GEOGRAPHIC SETTING:
Parent material: alluvium derived from sedimentary and metamorphic rocks.
Landform: fan remnants and strath terraces
Slopes: 0 to 8 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 Greybull, Hanksville and the Utaline series.
Greybull and
Hanksville soils are on hillslopes and are moderately deep to a paralithic contact.
Utaline soils are on fan remnants and have a loamy-skeletal particle size control section.
DRAINAGE AND PERMEABILITY: well drained, negligible to medium runoff, moderate permeability.
USE AND VEGETATION: These soils are used principally for rangeland, wildlife habitat and irrigated cropland. Crops commonly grown are alfalfa, small grains and corn. Potential vegetation consists of shadscale, winterfat, Indian ricegrass and galleta. This soil has been correlated to the Desert Loam (Shadscale) - 034XY106UT range site at the type location in Utah.
DISTRIBUTION AND EXTENT: Northeastern Utah. LRR D, MLRA 34. 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 coined.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Particle-size control section: The zone from 10 to 40 inches. (Bw and Bk horizons)
Ochric epipedon: The zone from 0 to 6 inches. (A1, A2 horizons)
Calcic horizon: The zone from 16 to 57 inches. (Bk, Bky horizons)
Gypsum accumulations: In the zone from 40 to 63 inches. (Bky and BCy horizons)
Laboratory data for similar soils shows a high percentage of clay sized carbonates causing it to have a coarse-loamy particle-size control section.
The cation exchange activity class was inferred from laboratory data from similar soils in the Uintah Area Soil Survey.
Taxonomic version: Eighth Edition, 1998.