LOCATION REDVIEW UTTentative Series
TAXONOMIC CLASS: Fine-silty, carbonatic, mesic Xeric Torrifluvents
TYPICAL PEDON: Redview silty clay loam, irrigated cropland. (Colors are for air dry soil unless otherwise noted.)
Ap--0 to 20 cm; light reddish brown (2.5YR 6/4) silty clay loam, reddish brown (2.5YR 4/4) moist; weak medium granular structure; hard, friable, moderately sticky and moderately plastic; many fine and medium roots; few fine tubular pores; violently effervescent; moderately alkaline (pH 8.4); abrupt smooth boundary. (15 to 28 cm thick)
C1--20 to 50 cm; light reddish brown (2.5YR 6/4) silty clay loam, red (2.5YR 4/6) moist; weak fine subangular blocky structure; hard, friable, moderately sticky and moderately plastic; many fine and medium roots; common fine and few medium tubular pores; violently effervescent; moderately alkaline (pH 8.4); gradual wavy boundary. (18 to 50 cm thick)
C2--50 to 103 cm; light reddish brown (2.5YR 6/4) silty clay loam and a few small lens 12 cm thick of sandy loam, reddish brown (2.5YR 4/4) moist; massive; hard, friable, moderately sticky and moderately plastic; few fine roots; violently effervescent; moderately alkaline (pH 8.4); gradual wavy boundary. (0 to 80 cm thick)
C3--103 to 150 cm; light red (2.5YR 6/6) silty clay loam, red (2.5YR 4/6) moist; massive; hard, firm, moderately sticky and moderately plastic; violently effervescent; moderately alkaline (pH 8.3).
TYPE LOCATION: Sevier County, Utah; 1 1/4 miles southwest of Sigurd; 1,800 feet west and 80 feet south of northeast corner of section 11, T.23S., R2W.; USGS Sigurd, Utah 7.5 minute quadrangle; latitude 38 degrees 49 minutes 26 seconds N. and longitude 111 degrees 59 minutes 6 seconds W., NAD 83.
RANGE IN CHARACTERISTICS:
Soil moisture: Usually dry; moist in winter and spring and for brief periods in late summer due to convection storms. (Aridic bordering on xeric soil moisture regime.)
Mean annual soil temperature: 9.0 to 12.0 degrees C
Organic matter content: Either decreases irregularly with depth or remains above 0.35 percent to a depth of 125 cm
Calcium carbonate equivalent: 40 to 60 percent
Particle-size control section (weighted average):
Clay content: 28 to 35 percent
Sand content: Less than 15 percent coarser than very fine sand
A horizon:
Hue: 2.5YR or 5YR
Value: 3 through 5 moist; where moist value is 3, this horizon is too thin to qualify as a mollic epipedon
Chroma: 3 or 4 dry, 3 through 6 moist
Reaction: Moderately alkaline to strongly alkaline
C horizon:
Hue: 2.5YR or 5YR
Value: 4 or 5 moist
Chroma: 3 through 8
Texture: Silty clay loam or silt loam, has lenses of loam or very fine sandy loam 5 to 15 cm thick in some pedons
Clay content: 28 to 35 percent
Sand content: Less than 15 percent fine sand or coarser particles
Reaction: Moderately alkaline to strongly alkaline.
COMPETING SERIES: These are the Naser T (UT), Quaker (UT) and Redfield (UT) series. Naser and Quaker soils have hues of 10YR or 7.5YR. Naser and Redfield soils have 18 to 27 percent clay in the control section.
GEOGRAPHIC SETTING: Redview soils are at elevations of 1,550 to 1,860 m. They occur on alluvial fans and basin floors. Slopes range from 0 to 2 percent. These soils formed in alluvium from limestone, shale and sandstone.
The average annual precipitation: 200 to 300 mm.
The mean annual temperature: 8.0 to 10.5 degrees C.
The frost free period: 100 to 140 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the competing Naser, Quaker, and Redfield soils and the Vanajo soils. Vanajo soils have 35 to 50 percent clay in the particle-size control section.
DRAINAGE AND PERMEABILITY: Well and moderately well drained; low runoff; moderately slow permeability; moderately high saturated hydraulic conductivity.
USE AND VEGETATION: These soils are principally used for irrigated crops of alfalfa, small grains, corn, sugar beets, and pasture. The native vegetation is basin big sagebrush, black greasewood, shadscale, horsebrush, and Indian ricegrass. These soils are correlated to semi-desert ecological sites in Utah.
DISTRIBUTION AND EXTENT: Central Utah, MLRA 28A. These soils have small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Phoenix, Arizona
SERIES PROPOSED: Sevier SCD, Sevier County, Utah, 1961, now part of the Sevier Co. Soil Survey, Utah, Sevier County.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Particle-size control section: The zone from 25 to 100 cm.
Ochric epipedon: The zone from 0 to 18 cm. (Ap horizon)