LOCATION CRESTLINE UT+NVEstablished Series
The Crestline series consists of very deep, well drained, moderately rapidly permeable soils. These soils formed in alluvium derived from mixed rocks including sandstone, welded tuff, rhyolite, andesite and basalt. Crestline soils are on alluvial fans, fan remnants, relict longshore bars, inset fans, fan skirts, and alluvial flats. Slope ranges from 0 to 5 percent. The average annual precipitation is about 10 inches and mean annual temperature is about 47 degrees F.
TAXONOMIC CLASS: Coarse-loamy, mixed, superactive, mesic Xeric Haplocalcids
TYPICAL PEDON: Crestline sandy loam--rangeland. (Colors are for air-dry soil unless otherwise stated.)
A--0 to 6 inches; light brown (7.5YR 6/4) sandy loam, brown (7.5YR 4/4) moist; weak very fine granular structure; slightly hard, friable, slightly sticky and nonplastic; few fine roots; slightly alkaline (pH 7.4); gradual smooth boundary. (4 to 11 inches thick)
Bw--6 to 12 inches; light brown (7.5YR 6/4) sandy loam, brown (7.5YR 4/4) moist; weak fine and medium subangular blocky structure; slightly hard, friable, slightly sticky and nonplastic; few fine roots; slightly alkaline (pH 7.4); abrupt wavy boundary. (5 to 15 inches thick)
Bk1--12 to 36 inches; pink (7.5YR 7/4) gravelly sandy loam, brown (7.5YR 5/4) moist; massive; hard to very weakly discontinuously carbonate cemented; firm, slightly sticky and nonplastic; few fine roots; strongly effervescent; moderately alkaline (pH 8.0); gradual wavy boundary. (7 to 30 inches thick)
Bk2--36 to 60 inches; pink (7.5YR 7/4) gravelly sandy loam, brown (7.5YR 5/4) moist; massive; slightly hard, friable; slightly sticky and nonplastic; strongly effervescent; moderately alkaline (pH 8.1).
TYPE LOCATION: Iron County Utah; 0.2 miles north of the east 1/4 corner, sec. 16, T. 35 S., R. 17 W.; Yale Crossing USGS Quad; latitude 37 degrees 45 minutes 42 seconds N. and longitude 113 degrees 44 minutes 55 seconds W., NAD 83.
RANGE IN CHARACTERISTICS:
Soil moisture: Usually dry. In more than 7 out of 10 years they are continually moist in all parts of the moisture control section for 60 to 75 days out of the 120 days following the winter solstice and are dry for 60 to 80 consecutive days in all parts of the moisture control section during the summer; aridic bordering on xeric moisture regime.
Soil temperature: 47 to 52 degrees F.
Mean summer soil temperature: 60 to 70 degrees F.
Depth to calcic horizon: 10 to 20 inches
Particle size control section (weighted average):
Clay content: 8 to 18 percent.
Rock fragments: 15 to 35 percent, mainly gravel.
A horizon:
Hue: 10YR or 7.5YR
Value: 5 to 7 dry, 3 to 6 moist
Chroma: 2 to 4, dry or moist
Calcium carbonate equivalent: 0 to 10 percent
Reaction: Slightly alkaline to strongly alkaline
Bw horizon:
Hue: 10YR to 7.5YR
Value: 5 to 7 dry, and 4 or 5 moist
Chroma: 3 or 4, dry or moist
Texture: Fine sandy loam, sandy loam, or loam
Clay content: 8 to 18 percent.
Calcium carbonate equivalent: 0 to 10 percent
Reaction: Slightly alkaline to strongly alkaline
Bk horizons:
Hue: 10YR or 7.5YR
Value: 6 to 8 dry, 4 to 7 moist
Chroma: 2 to 4, dry or moist
Texture: Stratified, averages sandy loamy or fine sandy loam; individual strata include gravelly sandy loam, loamy sand and fine sandy loam.
Clay content: 8 to 18 percent.
Rock fragments: Averages 5 to 35 percent, mainly gravel.
Structure: Subangular blocky or massive.
Consistence: Soft to hard dry, very friable to firm moist, nonsticky to slightly sticky and nonplastic to slightly plastic wet.
Calcium carbonate equivalent: 10 to 30 percent.
Secondary calcium carbonate: Some pedons have coatings on rock fragments.
Reaction: Moderately alkaline to very strongly alkaline.
Cementation: Discontinuous weakly cemented lenses or masses are in some pedons.
C horizon: (when present)
Hue: 10YR or 7.5YR
Value: 5 or 6 dry
Chroma: 3 to 6, dry or moist.
Texture: Loamy coarse sand or loamy sand.
Rock fragments: 15 to 55 percent, mainly gravel.
Calcium carbonate equivalent: 5 to 20 percent.
Reaction: Moderately alkaline or strongly alkaline.
COMPETING SERIES: These are the Adkins(WA), Atlanta(NV), Bertelson(UT), Briabbit(ID), Declo(ID), Eoyote(ID), Escalante(UT), Kecko(ID), Sagehill(WA), Somsen(ID), and Strevell(ID) series. Adkins soils have carbonates and the calcic horizon at 24 to 40 inches. Atlanta soils have very gravelly or extremely gravelly horizons within the control section. The Bertelson, Declo, Escalante, and Strevell soils are calcareous to the surface. Briabbit soils are moderately deep to soft bedrock. Eoyote soils lack gravel in the control section. Kecko soils are 20 to 40 inches deep to secondary calcium carbonate and have 0 to 10 percent gravel in the control section. Sagehill soils are 10 to 30 inches deep to secondary calcium carbonate and have 0 to 15 percent rock fragments in the control section. Somsen soils are moderately deep over hard bedrock. Strevell soils are 4 to 10 inches deep to secondary calcium carbonate and have Bk horizons with silt loam or loam textures of the fine earth.
GEOGRAPHIC SETTING: Crestline soils are on alluvial fans, relict longshore bars, inset fans, fan skirts, fan remnants and alluvial flats at elevations of 4,900 to 6,400 feet. Slope ranges form 0 to 8 percent. These soils formed in alluvium derived from mixed rocks including sandstone, welded tuff, rhyolite, andesite, and basalt. The climate is semiarid, and the average annual precipitation is 8 to 12 inches. The mean annual temperature is 45 to 50 degrees F. The mean summer temperature is 62 to 66 degrees F, and the freeze-free period ranges from 100 to 140 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Antelope Springs, Biblesprings, Escalante and Sevy soils. Antelope Springs soils have natric horizons and occur in lower positions on alluvial plains. Biblesprings soils are calcareous throughout and have a calcic horizon that contains appreciable secondary silica. Escalante soils are calcareous throughout and do not have a cambic horizon. Sevy soils have an argillic horizon. These soils are intermixed on the landscape with the Crestline soils.
DRAINAGE AND PERMEABILITY: Well drained; medium to very slow runoff; moderately rapid permeability.
USE AND VEGETATION: Crestline soils are used for livestock grazing. Vegetation is Wyoming big sagebrush, cheatgrass, galleta, and Indian ricegrass. Some small areas used for irrigated potatoes, small grains, and alfalfa.
DISTRIBUTION AND EXTENT: Southwestern and central Utah, southern Idaho and eastern Nevada. This series is moderately extensive. MLRA 28A and 47.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Phoenix, Arizona
SERIES ESTABLISHED: Beryl-Enterprise Area, Utah, 1942.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon: The zone from the soil surface to 6 inches. (A horizon)
Cambic horizon: The zone of slight soil structural development which is leached of carbonates, from a depth of 6 to 12 inches. (Bw horizon)
Calcic horizon: The zone of secondary carbonate accumulation from a depth of 12 to 60 inches. (Bk1 and Bk2 horizons)
Particle-size control section: The zone from 10 to 40 inches. (lower part of the Bw, Bk1 and upper part of the Bk2 horizons)
This soil was reclassified from a Xerollic Camborthids to a Xeric Haplocalcids on 9/94.