LOCATION NOLAVA UTEstablished Series
TAXONOMIC CLASS: Coarse-loamy, mixed, superactive, mesic Typic Haplocalcids
TYPICAL PEDON: Nolava loam, on a east facing, linear, 2 percent slope in irrigated cropland at an elevation of 5,060 feet. (Colors are for dry soil unless otherwise noted.)
Ap--0 to 8 inches; light yellowish brown (10YR 6/4) loam, brown (10YR 4/3) moist; weak coarse subangular blocky structure parting to moderate very fine subangular blocky; hard, firm, slightly sticky and slightly plastic; few medium and fine, common very fine roots; few medium and fine, common very fine tubular pores; slightly effervescent, (7 percent calcium carbonate equivalent), carbonates are disseminated; moderately alkaline (pH 8.2); abrupt smooth boundary. (2 to 10 inches thick)
A--8 to 13 inches; light brown (7.5YR 6/4) loam, brown (7.5YR 4/3) moist; moderate medium, fine, and very fine subangular blocky structure; very hard, firm, moderately sticky and moderately plastic; few medium, fine, and very fine roots; few medium, fine, and very fine tubular pores; slightly effervescent, (6 percent calcium carbonate equivalent), carbonates are disseminated; moderately alkaline (pH 8.4); clear smooth boundary. (0 to 5 inches thick)
Bw--13 to 20 inches; light brown (7.5YR 6/4) loam, brown (7.5YR 4/4) moist; weak medium subangular blocky structure parting to moderate fine and very fine subangular blocky; hard, firm, moderately sticky and moderately plastic; few medium, fine and very fine roots; few medium, common fine and very fine tubular pores; strongly effervescent, (15 percent calcium carbonate equivalent), carbonates are disseminated; moderately alkaline (pH 8.4); clear wavy boundary. (4 to 13 inches thick)
Bk1--20 to 40 inches; pink (7.5YR 7/4) loam, brown (7.5YR 5/4) moist; weak medium and fine subangular blocky structure; hard, firm, moderately sticky and moderately plastic; few medium, fine and very fine roots; few medium, common fine and many very fine tubular pores; strongly effervescent, (18 percent calcium carbonate equivalent), carbonates are disseminated and segregated in common irregular fine and medium masses; moderately alkaline (pH 8.4); clear wavy boundary. (combined thickness of Bk horizons - 15 to 46 inches)
Bk2--40 to 46 inches; light brown (7.5YR 6/4) loam, brown (7.5YR 5/4) moist; massive; hard, firm, moderately sticky and moderately plastic; few very fine roots; few medium, common fine and many very fine tubular pores; slightly effervescent, carbonates are disseminated and segregated in few irregular fine and medium masses; strongly alkaline (pH 8.5); clear smooth boundary. (0 to 6 inches thick)
Bk3--46 to 60 inches; very pale brown (10YR 7/3) sandy clay loam, yellowish brown (10YR 5/5) moist; massive; hard, firm, moderately sticky and moderately plastic; few very fine roots; few medium, common fine and many very fine tubular pores; strongly effervescent, (27 percent calcium carbonate equivalent), carbonates are disseminated and segregated in common irregular medium masses; moderately alkaline (pH 8.4); gradual wavy boundary. (0 to 16 inches thick)
Bk4--60 to 65 inches; very pale brown (10YR 7/3) sandy clay loam, brown (7.5YR 5/4) moist; massive; hard, firm, moderately sticky and moderately plastic; common fine very fine tubular pores; strongly effervescent, carbonates are disseminated and segregated in common medium and coarse masses; strongly alkaline (pH 8.6).
TYPE LOCATION: Uintah County, Utah; 2 miles southeast of Naples; 1,200 feet east 175 feet north of the southwest corner of sec. 4, T. 5 S., R. 22 E., SLBM; Naples, Utah USGS quadrangle; 40 degrees, 24 minutes, 21 seconds north latitude and 109 degrees, 27 minutes, 22 seconds west longitude, NAD 27
RANGE IN CHARACTERISTICS:
Soil moisture regime: The soil moisture control section is affected by precipitation that falls evenly throughout the year, with a slight increase in late summer and fall. The moisture regime is typic aridic.
Mean annual soil temperature: 47 to 50 degrees F.
Depth to calcic horizon: 5 to 30 inches
Particle-size control section: 13 to 18 percent silicate clay with 18 to 35 percent total clay; 15 to 40 percent calcium carbonate equivalent.
A horizon:
Hue: 7.5YR or 10YR
Value: 3 to 5 moist
Chroma: 2 to 4 dry or moist
Calcium carbonate equivalent: 5 to 10 percent
Reaction: moderately alkaline or strongly alkaline
Bw horizon:
Hue: 7.5YR or 10YR
Value: 5 or 6 dry, 4 or 5 moist
Chroma: 3 or 4 dry or moist
Texture: loam or sandy clay loam
Calcium carbonate equivalent: 5 to 10 percent
Reaction: moderately alkaline or strongly alkaline
Bk horizon:
Hue: 7.5YR or 10YR
Value: 6 or 7 dry, 5 or 6 moist
Chroma: 2 to 4 dry or moist
Texture: loam, sandy clay loam, or clay loam
Calcium carbonate equivalent: 15 to 40 percent
Reaction: moderately alkaline or strongly alkaline
COMPETING SERIES: These are the Boreham, Hiko Springs, Kinan, Nakoy, Pagina, and Riemod series. Potential competing series are the Bluechief, Chroder, Kaito, McCutchen, Moffat, Nageezi, Nakai, Nuahs, and Trook soils.
All these soils except Boreham and Riemod have less than 18 percent total clay in the series control section.
Boreham: more than 35 percent rock fragments below 40 inches.
Riemod: layers of gypsiferous materials below 40 inches.
GEOGRAPHIC SETTING:
Parent material: alluvium derived from sedimentary and metamorphic rocks
Landform: fan remnants
Slopes: 0 to 8 percent
Elevation: 4,700 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 Abracon, Leebench, Utaline and the competing Boreham and Nakoy series.
Abracon soils are ustic aridic.
Leebench soils have a natric horizon.
Utaline soils have a loamy-skeletal PSCS.
DRAINAGE AND PERMEABILITY: Well drained, negligible or low runoff, moderate permeability.
USE AND VEGETATION: These soils are used principally for rangeland, wildlife habitat and irrigated cropland. Crops commonly grown are alfalfa and small grains. 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 moderate 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: Previously, the concept of this soil was a fine-loamy PSCS and was known as the Avalon series. Laboratory data shows a high percentage of clay sized carbonates causing it to have a coarse-loamy PSCS.
Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon: The zone from the surface to 13 inches. (Ap, A horizons)
Calcic horizon: The zone from 20 to 60 inches. (Bk horizons)
ADDITIONAL DATA: Partial reference samples from pedon 93P577 and 93P578 Uintah County, Utah 6/93. The block description does not include CCE for the Bk2 and Bk4 because they were not part of the reference sample. The CEC clay activity class was determined from laboratory data.
Taxonomic version: Eighth Edition, 1998.