LOCATION CALROY UT

Inactive Series
Rev. JEB/RLM/MJD
01/2023

CALROY SERIES

The Calroy series consists of very deep, well drained soils that formed in alluvium derived dominantly from sedimentary rocks. Permeability is moderate in the upper part of the soil and very rapid in the lower part. Calroy soils are on alluvial fans and have slopes of O to 5 percent. The average annual precipitation is about 11 inches and the mean annual air temperature is about 46 F.

TAXONOMIC CLASS: Fine-loamy over sandy or sandy-skeletal, mixed, superactive, mesic Xeric Haplocalcids

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

A1--0 to 5 inches; yellowish brown (10YR 5/4) loam, dark brown (10YR 3/3) moist; moderate thin platy structure; soft, very friable, slightly sticky, slightly plastic; common very fine, fine and a few medium roots; many very fine, common fine and a few medium vesicular pores; 10 percent pebbles; slightly calcareous; moderately alkaline (pH 8.4); abrupt smooth boundary. (5 to 11 inches thick)

Bw--5 to 16 inches; yellowish brown (10YR 5/6) cobbly loam, dark yellowish brown (10YR 4/4) moist; moderate medium and fine subangular blocky structure; slightly hard, very friable, slightly sticky, slightly plastic; common very fine, fine and few medium roots; common very fine and fine random tubular pores; 20 percent pebbles, 10 percent cobbles; slightly calcareous; moderately alkaline (pH 8.4); clear smooth boundary. (6 to 11 inches thick)

Bk1--16 to 33 inches; pale brown (10YR 6/3) very gravelly loamy sand, brown (10YR 5/3) moist; massive; loose; few very fine and fine roots; 45 percent pebbles, 10 percent cobbles; moderately calcareous, carbonates are disseminated and thinly coat undersides of rock fragments; strongly alkaline (pH 8.6); clear smooth boundary. (7 to 17 inches thick)

Bk2--33 to 60 inches; very pale brown (10YR 7/3) very cobbly loamy coarse sand, brown (10YR 5/3) moist; massive; loose; few very fine and fine roots; 35 percent pebbles, 20 percent cobbles; moderately calcareous; carbonates are disseminated and thinly coat undersides of rock fragments; strongly alkaline (pH 8.6).

TYPE LOCATION: Tooele County, Utah; about 9 miles south of Ibapah; 2,000 feet south, 300 feet east of the NW corner of Sec. 33, T. 10 S., R. 19 W.

RANGE IN CHARACTERISTICS: Depth to underlying sand, pebbles and cobbles is 15 to 20 inches. Depth to calcium carbonate accumulation is 16 to 25 inches. The mean annual soil temperature is 47 to 50 degrees F. The A horizon has value of 5 or 6 dry, 3 or 4 moist and chroma of 3 or 4. Horizons having mollic colors lack the thickness for a mollic epipedon.

The B horizon has value of 5 or 6 dry, 3 through 5 moist and chroma of 3 through 6. It is cobbly loam and gravelly loam. Rock fragments range from 5 to 30 percent with 0 to 10 percent cobbles and 5 to 20 percent pebbles.

The C horizon has value of 6 or 7 dry, 4 through 6 moist and chroma of 3 or 4. It is extremely gravelly loamy sand, very gravelly loamy sand, or very cobbly loamy coarse sand. Rock fragments range from 50 to 70 percent, 5 to 25 percent cobbles and 35 to 65 percent pebble. The C horizon is moderately or strongly calcareous and moderately or strongly alkaline.

COMPETING SERIES: There are no competing series.

GEOGRAPHIC SETTING: The Calroy soils are on nearly level and gently sloping alluvial fans. Slopes range from 0 to 5 percent. Elevations range from 5,100 to 6,000 feet. The soils formed in alluvium derived dominantly from sedimentary rocks. The average annual precipitation is 10 to 12 inches and the mean annual air temperature is 45 to 48 degrees F. The freeze-free season is 100 to 120 days.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Declo and Taunton soils. The Declo soils are coarse-loamy. The Taunton soils have a duripan.

DRAINAGE AND PERMEABILITY: Well drained; medium runoff, moderate permeability to a depth of about 16 inches and very rapid permeability below 16 inches.

USE AND VEGETATION: These soils are used mainly for rangeland, but small areas used for irrigated hayland. The native vegetation is Wyoming big sagebrush, rabbitbrush and squirreltail. Some areas have been seeded with crested wheatgrass.

DISTRIBUTION AND EXTENT: Calroy soils are located in northwest Utah and are not extensive. MLRA 28A.

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Davis, California

SERIES PROPOSED: Tooele County, Utah, 1980. The name is coined.

REMARKS: Diagnostic horizons and features recognized in this pedon are:

Ochric epipedon - the zone from the surface of the soil to 5 inches (A1 horizon).

Cambic horizon - the zone from 5 to 16 inches (Bw horizon).

Calcic horizon - the zone of calcium carbonate accumulation from 16 to 60 inches (Bk1 and Bk2 horizons).

Xeric feature - soil moisture regime is aridic bordering on xeric.

These soils have been correlated with Semidesert range sites.

Classification changed from Xerollic Calciorthids to Xeric Haplocalcids in September 1994.

National Cooperative Soil Survey
U.S.A.