LOCATION HANKSVILLE UT+COEstablished Series
TAXONOMIC CLASS: Fine, mixed, active, calcareous, mesic Typic Torriorthents
TYPICAL PEDON: Hanksville clay loam, rangeland. (Colors are for dry soil unless otherwise noted)
A--0 to 7 inches; olive gray (5Y 4/2) clay loam, dark olive gray (5Y 3/2) moist; weak thick platy structure; hard, friable, slightly sticky and slightly plastic; very few fine roots; slightly effervescent; calcium carbonate is disseminated; moderately alkaline (pH 8.2); clear smooth boundary. (2 to 7 inches thick)
Cy--7 to l8 inches; olive gray (5Y 4/2) clay loam, dark olive gray (5Y 3/2) moist; massive; hard, very firm, sticky and plastic; few very fine roots; few veins of salt and gypsum; slightly effervescent; calcium carbonate is disseminated; moderately alkaline (pH 8.4); gradual smooth boundary. (8 to 20 inches thick)
Cyk--l8 to 39 inches; olive gray (5Y 4/2) silty clay, dark olive gray (5Y 3/2) moist; massive; hard, very firm, sticky and plastic; myclelia of salt and gypsum; strongly effervescent; calcium carbonate is in veins and disseminated; strongly alkaline (pH 8.6); clear wavy boundary. (l2 to 2l inches thick)
Cr--39 inches; soft fractured shale.
TYPE LOCATION: Wayne County, Utah; northwest l/4, northeast l/4 sec. l6, T. 28 S., R. l0 E.
RANGE IN CHARACTERISTICS:
Soil moisture regime: Aridic
Mean annual soil temperature: 47 to 56 degrees F.
Depth to paralithic contact: 20 to 40 inches to weathered shale
Thickness of the ochric epipedon: 2 to 7 inches
Organic matter content: 0.1 to 0.5 percent in the A and C horizons
Particle-size control section (weighted average):
Clay content: 35 to 55 percent
A horizon:
Hue: 10YR to 5Y
Value: 4 to 7 dry, 3 to 5 moist
Chroma: 1 to 4
Calcium carbonate equivalent: 5 to 25 percent
SAR: 2 to 5
EC (mmohs/cm): 2 to8
Gypsum: 1 to 10 percent
Reaction: moderately alkaline to very strongly alkaline
Cy or Cyk horizon:
Hue: 10YR to 5Y
Value: 4 to 7 dry, 3 to 5 moist
Chroma: 1 to 4
Texture: SICL, CL, SIC, or C
Clay content: 35 to 55 percent
Pararock fragments: 0 to 90 percent soft shale fragments
Calcium carbonate equivalent: 5 to 25 percent
SAR: 2 to 13
EC (mmohs/cm): 2 to 16
Gypsum: 1 to 10 percent
Reaction: moderately alkaline to very strongly alkaline
COMPETING SERIES: These are the
Notal and
Yuba series.
Notal and Yuba: very deep
GEOGRAPHIC SETTING:
Parent material: residuum, colluvium, and alluvium derived from shale
Landform: alluvial fans, eroding shale hills, hillslopes, and lower terraces
Slopes: 0 to 50 percent
Elevation: 4,000 to 6,800 feet
Mean annual temperature: 44 to 54 degrees F
Mean annual precipitation: 5 to 9 inches
Precipitation pattern: precipitation is relatively evenly distributed throughout the year
Frost-free period: 110 to 160 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Chipeta and Leebench series. The Chipeta soils have a paralithic contact at depths of 5 to 20 inches. The Leebench soils are very deep and have a natric horizon.
DRAINAGE AND PERMEABILITY: Well drained, high to very high runoff, slow to very slow permeability.
USE AND VEGETATION: The soils are used for rangeland and wildlife habitat. The potential vegetation is dominantly saltbush, shadscale, Indian ricegrass, and galleta.
MLRA OFFICE RESPONSIBLE: Lakewood, Colorado.
DISTRIBUTION AND EXTENT: Eastern Utah and western Colorado; LRR D, MLRA 34 and 35; This series is of minor extent.
SERIES ESTABLISHED: Wayne county, Utah, Henry Mountains Area, 1985.
REMARKS:
Diagnostic horizons and features recognized in this pedon are:
Particle-size control section: The zone from 10 to 39 inches. (Cy and Cyk horizons)
Ochric epipedon: The zone from 0 to 7 inches. (A horizon)
Paralithic contact: The contact with weathered shale at 39 inches. (Cr horizon)
Gypsum: Accumulation of gypsum in the zone from 7 to 39 inches. (Cy and Cyk horizons)
The assignment of the cation-exchange activity class is inferred from lab data from similar soils in the surrounding area.
Taxonomic version: Eighth Edition, 1998.