LOCATION YENRAB UTEstablished Series
TAXONOMIC CLASS: Mixed, mesic Typic Torripsamments
TYPICAL PEDON: Yenrab loamy sand - rangeland. (Colors are for air dry soil unless otherwise stated.)
A--0 to 12 inches; pale brown (10YR 6/3) loamy sand, brown (10YR 5/3) moist; single grain; loose; few fine and medium roots; strongly calcareous; strongly alkaline (pH 8.6); gradual wavy boundary. (2 to 32 inches thick)
C--12 to 60 inches; light brownish gray (10YR 6/2) sand, grayish brown (10YR 5/2) moist; single grain; loose; few fine roots; strongly calcareous; strongly alkaline (pH 8.8).
TYPE LOCATION: Millard County, Utah; approximately 520 feet south and 200 feet east of the North 1/4 northeast, 1/4, sec. 17, T. 16 S., R. 6 W.; lat. 39 degrees 25 minutes 51.72 seconds N. and long. 112 degrees 33 minutes 17.03 seconds W., NAD 83.
RANGE IN CHARACTERISTICS: The mean annual soil temperature ranges from 47 to 53 degrees F, and the mean summer soil temperature at a depth of 20 inches ranges from 69 to 72 degrees F.
The 10 to 40 inch particle-size control section averages fine sand, loamy fine sand, loamy sand, or sand. Electrical conductivity of the saturation extract is 0 to 8 millimhos/cm in the control section. Calcium carbonate equivalent is 3 to 15 percent throughout.
The A and C horizons have hue of 10YR, value of 6 or 7 dry, 4 to 6 moist and chroma of 2 to 4. Reaction is moderately alkaline to very strongly alkaline. Exchangeable sodium generally increases with depth and is estimated to range from 15 to 30 percent in the upper 12 inches and from 20 to 50 percent from 12 to 60 inches.
COMPETING SERIES: These are the Als (OR), Ecklund (T CO), Hawsley (NV), Isolde (NV), Kawich (NV), Kewake (OR), Razito (NM), Sheppard (UT), Stumble (NV), Sundown (NV), Tipper (WY), Tipperary (WY) and Tricera (T CO) series. Als and Razito soils have less than 15 percent exchangeable sodium. Ecklund soils are 20 to 40 inches to bedrock. Hawsley and Isolde soils have mean annual soil temperatures of 53 to 59 degrees F., and in addition, Isolde soils are noncalcareous throughout. Kewake soils have an exchangeable sodium percentage less than 15 percent in the A horizon and upper part of the C horizon and, in addition, have 5 to 30 percent sand sized pumice. Hawsley, Stumble and Tipperary soils have Bk or Ck horizons. Kawich, Sundown, and Tipperary soils have significant influence from pyroclastic materials. Sheppard soils have hue of 7.5YR to 2.5YR in the particle-size control section. Sundown soils have a mean annual soil temperature of 55 to 59 degrees F. Tipper soils have paralithic contact between depths of 20 and 40 inches. Tricera soils are noncalcareous above a depth of 40 inches.
GEOGRAPHIC SETTING: The Yenrab soils are at elevations of 4,200 to 5,000 feet. Slopes are 0 to 15 percent. These soils occur on gently to strongly sloping fan terraces, lake terraces, basin floors, lake plains, and beach bars, and are usually on stabilized dunes that occur on these landforms. The climate is arid. The mean annual temperature is 45 to 52 degrees F, the mean summer temperature is 70 to 73 degrees F, and the freeze-free period is 115 to 160 days. The average annual precipitation is 6 to 8 inches.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Cliffdown, Izo, Tooele, Saltair, Uffens, and Uvada soils. Cliffdown and Izo soils have more than 35 percent rock fragments. Saltair soils have salic horizons and are on low lying lake plains. Tooele soils have sandy loam textures throughout the profile. Uffens and Uvada soils have natric horizons with more than 35 percent clay.
DRAINAGE AND PERMEABILITY: Somewhat excessively drained; slow runoff; rapid permeability.
USE AND VEGETATION: These soils are used for rangeland. The native vegetation is scurfpea, horsebrush, yellowbrush, rabbitbrush, Russian thistle, greasewood, Indian ricegrass, fourwing saltbush, winterfat, budsage, ephedra and halogeton.
DISTRIBUTION AND EXTENT: West Central Utah, Millard County, Juab County and Tooele County. This series is extensive. MLRA 28A.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Phoenix, Arizona
SERIES ESTABLISHED: Millard County (Delta Area), Utah, 1970.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - The zone from the surface to a depth of 12 inches (A horizon)
Psamment feature - Texture of loamy fine sand or coarser in all subhorizons of the particle-size control section (10 to 40 inches).
The classification is based on the "Keys to Soil Taxonomy, Eighth Edition, 1998".