LOCATION GUY NMEstablished Series
TAXONOMIC CLASS: Coarse-loamy, mixed, superactive, mesic Aridic Calciustolls
TYPICAL PEDON: Guy gravelly loam-rangeland. (Colors are for dry soil unless otherwise noted)
A1--0 to 7 inches; dark grayish brown (10YR 4/2) gravelly loam, very dark grayish brown (10YR 3/2) moist; weak and moderate medium subangular blocky structure; hard, friable, slightly sticky and slightly plastic; many fine roots; 15 percent pebbles with 30 percent of the surface covered with pebbles; strongly effervescent; moderately alkaline; clear wavy boundary. (5 to 12 inches thick)
A2--7 to 15 inches; grayish brown (10YR 5/2) very gravelly loam, very dark grayish brown (10YR 3/2) moist; weak and moderate medium subangular blocky structure; hard, friable, slightly sticky and slightly plastic; common fine roots; 40 percent pebbles; strongly effervescent; common hard lime nodules; moderately alkaline; clear wavy boundary. (5 to 10 inches thick)
Bk1--15 to 24 inches; white (10YR 8/2) very gravelly sandy loam, very pale brown (10YR 7/3) moist; massive; hard, friable, slightly sticky and slightly plastic; few fine roots; 50 percent pebbles; violently effervescent; moderately alkaline; abrupt wavy boundary. (8 to 24 inches thick)
Bk2--24 to 40 inches; pale brown (10YR 6/3) heavy sandy loam, brown (10YR 5/3) moist; massive; slightly hard, friable, slightly sticky and slightly plastic; few fine roots; 10 percent pebbles; violently effervescent; moderately alkaline; clear wavy boundary. (0 to 20 inches thick)
2C--40 to 60 inches; very pale brown (10YR 7/3) gravelly loamy sand, pale brown (10YR 6/3) moist; massive; soft, very friable, nonsticky and nonplastic; 35 percent pebbles; violently effervescent; moderately alkaline.
TYPE LOCATION: Union County, New Mexico; 0.05 miles north and 0.05 miles west of the SE corner, sec. 34, T.28N., R.33E.
RANGE IN CHARACTERISTICS: Depth to the calcic horizon range from 10 to 20 inches. Some horizons have up to 50 percent rock fragments, but the average for the particle-size control section is less than 35 percent. Less than 40 percent of the rock fragments is larger than gravel. Annual soil temperature ranges from 49 to 57 degrees F.
The A horizon has hue of 7.5YR or 10YR, value of 4 or 5 dry, 2 or 3 moist; and chroma of 2 or 3. It is loamy fine sand, sandy loam or loam with gravelly, cobbly or very cobbly phases.
The Bk horizon has hue of 7.5YR or 10YR, value of 4 through 8 dry and 3 through 7 moist, and chroma of 2 through 4. The fine earth fraction is sandy loam in which strata of loamy sand are common. The calcic horizon has 15 to 40 percent calcium carbonate equivalent.
COMPETING SERIES: This is the Laird series. Laird soils have less than 15 percent rock fragments and usually less than 5 percent.
GEOGRAPHIC SETTING: Guy soils are on gravelly hills of the Ogallala formation at elevations of 4,300 to 7,600 feet. Slopes are 0 to 35 percent. The average annual temperature is 47 to 56 degrees F., and the average annual precipitation is 12 to 17 inches, 75 percent of which falls during the frost-free period. The frost-free period is 115 to 180 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Dioxice, Spurlock and Texline soils. Dioxice soils have a fine-loamy particle-size control section. Spurlock soils have carbonatic mineralogy. Texline soils have a fine-loamy particle-size control section.
DRAINAGE AND PERMEABILITY: Well-drained; medium runoff; moderately rapid.
USE AND VEGETATION: Used for livestock grazing and wildlife habitat. Principal native plants are blue grama, hairy grama, sideoats grama, sand dropseed and some yucca.
DISTRIBUTION AND EXTENT: Northeastern New Mexico and possibly parts of Texas and Oklahoma. The series is of moderate extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Phoenix, Arizona
SERIES ESTABLISHED: Union County, New Mexico; 1972.
OSED scanned by SSQA. Last revised by state on 3/83.