LOCATION WIMMER UT
Established Series
Rev. LDS/RJL/JWB
03/2011
WIMMER SERIES
The Wimmer series consists of very deep, well drained soils that formed in alluvium derived from mixed sedimentary rocks mainly sandstone and shale. Wimmer soils are on fan remnants and structural benches. Slopes range from 1 to 6 percent. Mean annual precipitation is about 36 cm and the mean annual temperature is about 8.0 degrees C.
TAXONOMIC CLASS: Fine-loamy, mixed, superactive, mesic Aridic Calciustepts
TYPICAL PEDON: Wimmer fine sandy loam, on a north west facing, structural bench, 3 percent slope in rangeland at an elevation of 2,132 meters. (Colors are for dry soil unless otherwise noted.) When described on July 2, 1993 the soil was dry. The surface is covered by 10 percent gravel and few cobbles.
A--0 to 10 cm; brown (7.5YR 5/4) fine sandy loam, dark brown (7.5YR 3/4) moist; weak fine granular structure; soft, very friable, slightly sticky and slightly plastic; many very fine, common fine medium and coarse roots; many very fine interstitial pores; 10 percent gravel and 1 percent cobbles; very slightly effervescent, (2 percent calcium carbonate equivalent); slightly alkaline (pH 7.8); clear smooth boundary. (6 to 15 cm thick)
Bw--10 to 28 cm; strong brown (7.5YR 5/6) fine sandy loam, brown (7.5YR 4/4) moist; moderate medium subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; common very fine, fine, medium and coarse roots; common very fine and fine tubular pores; 5 percent gravel; slightly effervescent, carbonates are disseminated (3 percent calcium carbonate equivalent); moderately alkaline (pH 8.0); clear wavy boundary. (15 to 30 cm thick)
Bk1--28 to 58 cm; light brown (7.5YR 6/4) gravelly loam, brown (7.5YR 5/4) moist; weak medium subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; common very fine and fine, few medium and coarse roots; common very fine tubular pores; 15 percent gravel and 1 percent cobbles; violently effervescent, common coats of calcium carbonate on bottom of rock fragments (20 percent calcium carbonate equivalent); moderately alkaline (pH 8.2); gradual wavy boundary. (15 to 50 cm thick)
Bk2--58 to 120 cm; pink (7.5YR 8/4) loam, light brown (7.5YR 6/4) moist; weak fine subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; common very fine, few fine and medium roots, common very fine tubular pores; 5 percent gravel; violently effervescent, many moderately thick coats of calcium carbonate around rock fragments (30 percent calcium carbonate equivalent); moderately alkaline (pH 8.4); clear wavy boundary. (15 to 65 cm thick)
Bk3--120 to 137 cm; pink (7.5YR 7/4) loam, brown (7.5YR 5/4) moist; weak fine subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; few very fine and fine roots; common very fine tubular pores; 10 percent gravel; violently effervescent, many coats of calcium carbonate around rock fragments (22 percent calcium carbonate equivalent); moderately alkaline (pH 8.4); gradual wavy boundary. (0 to 65 cm thick)
BCk--137 to 184 cm; light brown (7.5YR 6/4) gravelly loam, brown (7.5YR 5/4) moist; weak fine subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; few very fine and fine roots; common very fine tubular pores; 20 percent gravel and 1 percent cobbles; strongly effervescent, common thin coats of calcium carbonate around rock fragments (18 percent calcium carbonate equivalent); strongly alkaline (pH 8.5). (0 to 50 cm thick)
TYPE LOCATION: Emery County, Utah; about 1 kilometer (.6 miles) northwest of Bob Hill Knoll; located about 1,800 feet east and 1,050 feet south of the NW corner of sec. 32, T. 18 S., R. 11 E.; Bob Hill Knoll USGS quad; UTM 524654 meters E, 4341032 meters N, zone 12; lat. 39 degrees 13 minutes 06 seconds N. and long. 110 degrees 42 minutes 52 seconds W., NAD 83
RANGE IN CHARACTERISTICS:
Soil moisture: The soil moisture control section is affected by precipitation that peaks from July to October and falls evenly throughout the remainder of the year; aridic (torric) moisture regime bordering on ustic.
Mean annual soil temperature: 8.3 to 10 degrees C
Mean summer soil temperature: 17 to 20 degrees C
Depth to calcic horizon: 25 to 64 cm
Depth to cambic horizon: 6 to 15 cm
Thickness of the cambic horizon: 15 to 58 cm
Particle-size control section (weighted averages):
Clay content: 18 to 27 percent
Rock fragment content: 5 to 35 percent gravel and cobbles
A horizon:
Hue: 7.5YR or 10YR
Value: 5 or 6 dry, 3 or 4 moist
Chroma: 2 to 4
Texture: fine sandy loam, very fine sandy loam
Clay content: 10 to 20 percent
Rock fragments: 0 to 15 percent gravel and cobbles
Calcium carbonate equivalent: 1 to 10 percent
EC (mmhos/cm): 0 to 2
SAR: 0 to 2
Reaction: slightly or moderately alkaline
Bw horizon:
Hue: 7.5YR or 10YR
Value: 5 or 6 dry, 4 or 5 moist
Chroma: 3 to 6 dry or moist
Texture: fine sandy loam
Clay content: 10 to 20 percent
Rock fragments: 0 to 15 percent gravel and cobbles
Calcium carbonate equivalent: 1 to 10 percent
EC (mmhos/cm): 0 to 4
SAR: 0 to 4
Reaction: slightly or moderately alkaline
Bk horizon:
Hue: 7.5YR to 2.5Y
Value: 5 to 8 dry, 4 to 7 moist
Chroma: 3 to 6 dry or moist
Texture: loam, gravelly loam, cobbly loam, cobbly fine sandy loam
Clay content: 10 to 27 percent
Rock fragments: 0 to 35 percent gravel and cobbles
Calcium carbonate equivalent: 15 to 40 percent
EC (mmhos/cm): 0 to 4
SAR: 0 to 5
Reaction: moderately alkaline or strongly alkaline
BCk horizon (when present):
Hue: 7.5YR to 2.5Y
Value: 5 to 8 dry, 4 to 7 moist
Chroma: 3 to 6 dry or moist
Texture: gravelly loam
Clay content: 15 to 27 percent
Rock fragments: 15 to 35 percent gravels or cobbles
Calcium carbonate equivalent: 10 to 25 percent
EC (mmhos/cm): 0 to 4
Gypsum: 0 to 2 percent
SAR: 0 to 2
Reaction: moderately alkaline or strongly alkaline
COMPETING SERIES: These are the
Cibeque (AZ),
Coconino (AZ),
Kandrix (CO) and
Quartermaster (AZ) series. All these soils have a mean annual soil temperature of greater than 10 degrees C. Coconino and Quartermaster soils are moderately deep. Kandix soils have 5 percent or less rock fragments in the control section. Cibeque soils do not have cambic horizons.
GEOGRAPHIC SETTING:
Parent material: alluvium derived from sedimentary rock
Landform: fan remnants and structural benches
Slopes: 1 to 6 percent
Elevation: 1951 to 2286 meters
Mean annual temperature: 7.2 to 8.9 degrees C.
Mean annual precipitation: 30 to 41 cm
Precipitation pattern: peak periods between July to October and evenly distributed throughout the remainder of the year
Frost-free period: 110 to 135 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Bobknoll,
Colskel,
Stephouse and
Yatne series. The Bobknoll soils are moderately deep and are on slightly higher landscape positions. The Colskel and Stephouse soils are shallow to bedrock and are on ridges. The Yatne soils have more than 35 percent rock fragments and are on more convex positions.
DRAINAGE AND PERMEABILITY: Well drained, low runoff, moderate permeability.
USE AND VEGETATION: Grazing, Native vegetation is Wyoming big sagebrush, western wheat, blue grama and Indian rice grasses and fourwing saltbush.
DISTRIBUTION AND EXTENT: Eastern, Utah; LRR D, MLRA 34B; small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Bozeman, Montana
SERIES ESTABLISHED: Emery County, Utah, Emery area soil survey area, 2011. The name Wimmer comes from Wimmer Knoll located on Cedar Mountain in Emery County.
REMARKS:
Diagnostic horizons and features recognized in this pedon are:
Series control section: The zone from 0 to 200 cm.
Particle-size control section: The zone from 25 to 100 cm. (Bw, Bk1 and Bk2 horizons)
Ochric epipedon: The zone from 0 to 10 cm. (A horizon)
Cambic horizon: The zone from 10 to 28 cm. (Bw horizon)
Calcic horizon: The zone from 28 to 184 cm. (Bk1, Bk2, Bk3 and BCk horizons)
The assignment of the cation-exchange activity class is inferred from lab data from similar soils in the surrounding area.
Taxonomic Version: Classified according to Keys to Soil Taxonomy, Eleventh Edition, 2010.
National Cooperative Soil Survey
U.S.A.