LOCATION HADES UT+IDEstablished Series
TAXONOMIC CLASS: Fine-loamy, mixed, superactive, frigid Pachic Argixerolls
TYPICAL PEDON: Hades loam--rangeland. (Colors are for air-dry soil unless otherwise stated.)
A--0 to 26 inches; very dark grayish brown (10YR 3/2) loam, very dark brown (10YR 2/2) moist; weak fine subangular blocky structure parting to weak fine granular; soft, friable, slightly sticky and slightly plastic; common fine and few coarse roots; common fine and few medium tubular pores; neutral (pH 7.0); clear smooth boundary. (11 to 38 inches thick)
Bt1--26 to 38 inches; light yellowish brown (2.5Y 6/3) clay loam, olive brown (2.5Y 4/4) moist; moderate medium angular blocky structure; extremely hard, firm, sticky and plastic; few fine and coarse roots; many very fine and few fine tubular pores; few moderately thick clay films; neutral (pH 7.0); gradual wavy boundary. (8 to 20 inches thick)
Bt2--38 to 57 inches; pale yellow (2.5Y 7/4) silty clay loam, light olive brown (2.5Y 5/4) moist; moderate coarse angular blocky structure; extremely hard, firm, sticky and plastic; few fine and coarse roots; many very fine and few fine tubular pores; few moderately thick clay films; slightly alkaline (pH 7.4); gradual wavy boundary. (12 to 24 inches thick)
Bw--57 to 60 inches; light yellowish brown (2.5Y 6/4) silty clay loam, olive brown (2.5Y 4/4) moist; moderate coarse angular blocky structure; extremely hard, firm, sticky and plastic; few fine tubular pores; strongly effervescent; slightly alkaline (pH 7.8).
TYPE LOCATION: Sevier County, Utah; 1.5 miles south and 3 miles west of the junction of I-70 in Salina Canyon and the Mountain Ranch Road; about 400 feet south and 400 feet east of the southwest corner of sec. 31, T. 22 S., R. 3 E.
RANGE IN CHARACTERISTICS: The mollic epipedon is 20 to 50 inches thick and may include the upper part of the Bt horizon. The combined thickness of the A and Bt horizons is 50 to 60 inches or more. Depth to visible (secondary) carbonates ranges from 54 to 60 inches or more. The mean annual soil temperature ranges from 39 to 45 degrees F. The mean summer soil temperature ranges from 61 to 64 degrees F. These soils are usually moist, but are dry for 45 to 60 consecutive days during the summer. Rock fragments consist of gravel and cobbles and range from 0 to 30 percent in the A and Bt horizons and from 0 to 60 percent in the C horizon.
The A horizon has hue of 10YR or 7.5YR, value of 3 to 5 dry, 2 or 3 moist, and chroma of 2 to 4 dry, 1 to 3 moist. It is moderately acid to neutral.
The Bt horizon has hue of 7.5YR to 2.5Y, value of 4 to 7 dry, 2 to 5 moist, and chroma of 2 to 4. It is loam, silt loam, clay loam, sandy clay loam, silty clay loam, gravelly silt loam, or gravelly silty clay loam and averages 25 to 35 percent clay. It is moderately acid to slightly alkaline.
The Bw or C horizon has hue of 10YR to 5Y, value of 4 to 7 dry, 3 to 5 moist and chroma of 2 to 4 dry and moist. It is sandy loam, loam or silty clay loam. It is noncalcareous to moderately calcareous and moderately acid to moderately alkaline.
COMPETING SERIES: These are the
Dunford,
Moffspring (T ID), and
Sag series. In addition, the following series may be competing when CE activities are updated:
Bly,
Carey Lake,
Hurryback,
Krueger (T),
Lagnaf (T),
Mahogan,
Marotz, Moffspring (T),
Nagle (T),
Strom and
Tusk.
Bly, Hurryback, Marotz, and Tusk soils have rock fragments of volcanic lithologies
Carey Lake soils are less than 30 inches to the base of the argillic.
Dunford and Mahogan soils have bedrock at depths of 20 to 40 inches.
Krueger and Lagnaf soils have rock fragments of basic and intermediate igneous lithologies.
Moffspring soils have redox features in the lower horizons
Nagle soils have secondary carbonates above 54 inches.
Sag soils have a lithic contact within 60 inches.
Strom soils have gleyed horizons and endosaturation.
GEOGRAPHIC SETTING: Hades soils are on mountain slopes, hills, fan remnants, and structural benches. These soils formed in colluvium, till, alluvium, and residuum from sandstone, shale, and quartzite. Slopes range from 0 to 60 percent. They are on all exposures but are dominantly on north aspects. Hades soils are at elevations of 4,800 to 8,300 feet. The climate is moist subhumid, and the average annual precipitation ranges from 15 to 25 inches. The mean annual temperature is 38 to 45 degrees F. The mean summer temperature is 59 to 62 degrees F., and the freeze-free period ranges from 65 to 80 days in Utah and 50 to 90 days in Idaho.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Agassiz, Cloud Rim, Croydon, Gabica, Hume (T), Isbell, Kilfoil, Lucky Star, Moweba and Vicking soils. Cloud Rim, Croydon, Hume (T) and Isbell soils have a mollic epipedon less than 20 inches thick. Hume (T) soils have a fine particle-size control section and have carbonate accumulations. Kilfoil soils have an ochric epipedon and are 20 to 40 inches deep. Lucky Star soils have a mollic epipedon less than 20 inches thick, have an E horizon, and are loamy-skeletal. Moweba soils lack a Bt horizon and are loamy-skeletal. Vicking soils have a mollic epipedon less than 20 inches thick and a calcic horizon. Agassiz and Gabica are less than 20 inches thick to bedrock.
DRAINAGE AND PERMEABILITY: Well drained; rapid to slow runoff; moderately slow permeability.
USE AND VEGETATION: These soils are used for range, wildlife habitat and watershed. The potential vegetation is Gambel oak, serviceberry, snowberry, slender wheatgrass, bluebunch wheatgrass, native bluegrass, nodding bromegrass and big sagebrush.
DISTRIBUTION AND EXTENT: Box Elder, Sevier, Morgan, Summit and Weber Counties, Utah and Bannock, Cassia, and Owhyee Counties, Idaho. LRR B, E; MLRAs 13, 25, 47. This series is moderately extensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Bozeman, Montana
SERIES ESTABLISHED: Morgan Area, Utah, 1974.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Mollic epipedon - the zone from the surface to 26 inches. (A horizon)
Argillic horizon - the zone from 26 to 57 inches. (Bt1, Bt2 horizons)
Keys to Soil Taxonomy: Series classified according to Eighth Edition, 1998. This revision deletes soils with a lithic contact at 40 to 60 inches from the series concept. This series now is very deep only.
ADDITIONAL DATA: