LOCATION ORDERVILLE              UT

Established Series
Rev. KWC/VLP
09/2018

ORDERVILLE SERIES

The Orderville series consists of very deep, well drained soils that formed in slope alluvium and residuum derived from sandstone and shale. Orderville soils are on structural benches and hillslopes. Slopes range from 15 to 35 percent. Mean annual precipitation is about 16 inches (406 mm) and the mean annual air temperature is about 47 degrees F (8.3 degrees C).

TAXONOMIC CLASS: Fine-silty, mixed, superactive, mesic Aridic Haplustepts

TYPICAL PEDON: Orderville silt loam - rangeland (Colors are for dry soil unless otherwise noted.)

A--0 to 3.5 inches (0 to 9 cm); brown (10YR 5/3) silt loam, dark grayish brown (10YR 4/2), moist; 23 percent clay; moderate very fine granular structure; slightly hard, friable, slightly sticky and slightly plastic; common very fine roots throughout; common very fine irregular and vesicular pores; 3 percent gravels; strongly effervescent; moderately alkaline, pH 8.0; clear smooth boundary (3.5 to 6 inches, 9 to 16 cm thick).

Bw--3.5 to 19 inches (9 to 48 cm); brown (10YR 5/3) silty clay loam, dark grayish brown (10YR 4/2), moist; 29 percent clay; moderate medium subangular blocky structure; moderately hard, friable, moderately sticky and slightly plastic; common very fine, fine, and medium roots throughout; common very fine and fine irregular pores; few faint clay films on surfaces along root channels; 1 percent gravels; strongly effervescent; moderately alkaline, pH 8.0; clear smooth boundary (8 to 15 inches, 20 to 39 cm thick).

Bk1--19 to 46 inches (48 to 117 cm); grayish brown (10YR 5/2) silty clay loam, dark gray (10YR 4/1), moist; 33 percent clay; moderate medium subangular blocky structure; hard, firm, moderately sticky and moderately plastic; common medium roots throughout; common very fine irregular pores; few fine, irregular carbonate masses in the matrix; strongly effervescent; moderately alkaline, pH 8.2; gradual smooth boundary (11 to 27 inches, 28 to 69 cm thick).

Bk2--46 to 63 inches (117 to 160 cm); brown (10YR 5/3) silty clay loam, grayish brown (10YR 5/2), moist; 32 percent clay; massive; hard, firm, moderately sticky and moderately plastic; common coarse roots throughout; few fine, irregular carbonate masses in the matrix; strongly effervescent; strongly alkaline, pH 8.6.

TYPE LOCATION: Kane County, Utah; about 3 miles east of highway 89, just south of Black Mountain in northern Kane County; lat. 37 degrees 21 minutes 47 seconds N. and long. 112 degrees 32 minutes 26 seconds W., NAD 83

RANGE IN CHARACTERISTICS:

Soil moisture: aridic ustic moisture regime

Mean annual soil temperature: 47 to 52 degrees F (8.2 to 11.0 degrees C)

Depth to cambic horizon: 3.5 to 14 inches (9 to 36 cm)

A Horizon
Hue: 7.5 YR, 10YR, 2.5Y
Value: 4 or 6 dry, 2.5 to 5 moist
Chroma: 3 or 4 dry, 2 or 3 moist
Texture: silt loam, loam, fine sandy loam, clay loam, silty clay loam
Clay: 16 to 25 percent
Electrical conductivity: 0 to 2 mmhos/cm
Calcium carbonate equivalent: 0 to 10 percent
Rock fragments: 0 to 10 percent gravels
Reaction: slightly alkaline to moderately alkaline (7.4 to 8.4)

Bw Horizon
Hue: 7.5YR, 10YR,2.5Y
Value: 4 to 6 dry, 3 to 6 moist
Chroma: 2 to 6 dry, 2 to 8 moist
Texture: clay loam, silty clay loam, silt loam, loam
Clay: 26 to 34 percent
Electrical conductivity: 0 to 2 mmhos/cm
Calcium carbonate equivalent: 0 to 10 percent
Rock fragments: 0 to 10 percent gravels
Reaction: neutral to moderately alkaline (6.6 to 8.4)

Bk Horizons
Hue: 7.5YR, 10YR, 2.5Y
Value: 4 to 6 dry, 3 to 6 moist
Chroma: 1 to 8 dry, 1 to 6 moist
Texture: clay loam, silty clay loam, silt loam, loam
Clay: 22 to 33 percent
Electrical conductivity: 0 to 4 mmhos/cm
Calcium carbonate equivalent: 5 to 15 percent
Rock fragments: 0 to 15 percent gravels
Reaction: moderately alkaline to strongly alkaline (7.9 to 9.0)

C Horizons (where present)
Hue: 2.5Y, 7.5YR, 10YR
Value: 4 or 5 dry, 3 to 5 moist
Chroma: 2 to 4, dry or moist
Texture: silty clay loam, silt loam, loam
Clay: 22 to 34 percent
Electrical conductivity: 0 to 2 mmhos/cm
Calcium carbonate equivalent: 5 to 15 percent
Rock fragments: 0 to 20 percent channers or gravels
Reaction: moderately alkaline to strongly alkaline (7.9 to 9.0)

COMPETING SERIES: These are the Buffalo Park(KS) and Minqwet(CO). Buffalo Park soils have a lithologic discontinuity, loess parent material, and the soil forming factors of the Central High Tablelands, LRR H, MLRA 72. Minqwet soils are moderately deep to paralithic contact, calcium carbonate equivalent range of 15 to 40 percent, and the soil forming factors of the Central High Plains, LRR G, MLRA 67.

GEOGRAPHIC SETTING:
Orderville soils are on structural benches, hillslopes, and landslides at elevations of 5,300 to 7,560 feet (1910 to 2290 m). Slopes range from 15 to 35 percent. The soils formed in residuum and slope alluvium derived from sandstone and shale. Mean annual precipitation ranges is 14 to 17 inches (355 to 432 mm) and mean annual air temperature is 45 to 50 degrees F (7.2 to 10 degrees C). Frost-free period is 100 to 119 days. April, May, and June are driest months, with monsoonal pattern rainfall in late summer and light to moderate rainfall and snowfall in winter.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Flugle(NM), Naplene(UT), and Sideshow(CO) series. The Flugle soils are on stable and slightly less sloping portions of structural benches and have an argillic horizon. The Naplene soils are in swales on structural benches and do not have diagnostic subsurface horizons. The Sideshow soils occur on structural benches capped by fine textured alluvium and residuum from shale and are smectitic. These soils also have gypsum masses in the lower horizons.

DRAINAGE AND PERMEABILITY: well drained, medium runoff, moderately high permeability.

USE AND VEGETATION: Orderville soils are used for livestock grazing and wildlife habitat. Vegetation includes Gambel oak, Utah serviceberry, Utah juniper, twoneedle pinyon, Indian ricegrass, big sagebrush, bottlebrush squirreltail, and Sandberg bluegrass.

DISTRIBUTION AND EXTENT: Kane County, Utah; LRR D, MLRA 35; Orderville soils are of limited extent in southern Utah.

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: PHOENIX, ARIZONA

SERIES ESTABLISGED: Kane County, Utah, soil survey area July 2017

REMARKS: Diagnostic horizons and features recognized in this pedon are

Particle-size control section: the zone from 10 to 40 inches (25 to 100 cm)(Bw and Bk1 horizons)

Ochric epipedon: the zone from 0 to 3.5 inches (0 to 9 cm)(A horizons)

Cambic horizon: the zone from 3.5 to 19 inches (9 to 48 cm)(Bw horizons)

The assignment of the cation-exchange activity class is inferred from lab data from similar soils in the surrounding area.

Orderville series are mapped in the vicinity of the town of Orderville, Utah.

Classified according to Soil Taxonomy, Second Edition, 1999; Keys to Soil Taxonomy, Twelfth Edition, 2014

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National Cooperative Soil Survey
U.S.A.