LOCATION ANTBED TX
Established Series
JJP, CJV, JAC
07/2012
ANTBED SERIES
The Antbed series consists of very deep well drained soils that formed in alluvium. Antbed soils are on alluvial flats. Slopes range from 0 to 3 percent. Mean annual air temperature is about 65 degrees F. (18 degrees C) and the mean annual precipitation is about 13 inches (330 mm).
TAXONOMIC CLASS: Fine, mixed, superactive, thermic Ustic Haplargids
TYPICAL PEDON: Antbed loam - cropland. (Colors are for dry soils unless otherwise noted.)
Ap--0 to 4 inches (0 to 10 cm); brown (7.5YR 5/4) loam, dark brown (7.5YR 3/3) moist; 23 percent clay; moderate medium subangular blocky parting to moderate fine subangular blocky structure; moderately hard, friable, moderately sticky and moderately plastic; common very fine and fine roots; common very fine pores; strongly effervescent; neutral (pH 7.2); clear smooth boundary. (2 to 8 inches [5 to 20 cm] thick)
Bt--4 to 17 inches, [10 to 44 cm]; strong brown (7.5YR 4/6) clay loam, brown (7.5YR 4/4) moist; 32 percent clay; moderate medium subangular blocky parting to moderate fine subangular blocky structure; moderately hard, friable, moderately sticky and very plastic; common very fine and fine roots; common very fine pores; 25 percent distinct clay films on all faces of peds; slightly effervescent; slightly alkaline (pH 7.8); clear smooth boundary. (4 to 24 inches [10 to 60 cm] thick)
Btk1--17 to 41 inches, (44 to 104 cm); light brown (7.5YR 6/4) clay, brown (7.5YR 5/4) moist; 44 percent clay; moderate medium subangular blocky parting to moderate fine subangular blocky structure; hard, firm, very sticky and very plastic; few very fine roots; few very fine and fine pores; 25 percent distinct clay films on all faces of peds; 4 percent medium distinct calcium carbonate masses; strongly effervescent; moderately alkaline (pH 8.2); clear smooth boundary.
Btk2--41 to 63 inches, (104 to 160 cm); light brown (7.5YR 6/4) clay loam, brown (7.5YR 5/4) moist; 39 percent clay; moderate medium subangular blocky parting to moderate fine subangular blocky structure; hard, firm, very sticky and very plastic; few very fine roots; few very fine and fine pores; 20 percent distinct clay films on all faces of peds; 2 percent medium distinct carbonate masses; strongly effervescent; moderately alkaline (pH 8.2).
TYPE LOCATION: Culberson County, Texas; from the intersection of U.S. Highway 90 and Interstate Highway 10 in Van Horn Texas; 13.4 miles east on Interstate Highway 10 to Michigan Flat exit; 1.47 miles south on dirt road; 1.5 miles east into field on dirt road; 0.33 mile south on field road; 0.4 mile east on field road; and 415 feet north in field. (Plateau, TX USGS 7.5 minute topographic quadrangle; Latitude: 31 degrees, 1 minute, 40 seconds North; Longitude: 104 degrees, 34 minutes, 34 seconds West, NAD83; UTM Easting: 540447 m, UTM Northing 3432771 m, UTM Zone 13, NAD83.)
RANGE IN CHARACTERISTICS:
Soil moisture: Precipitation falls during afternoon thunderstorms mostly from July to September. The driest month is March. Ustic aridic soil moisture regime.
Soil temperature: 62 to 65 degrees F. (17 to 18 degrees C)
Depth to argillic horizon: 4 to 10 inches (10 to 25 cm)
Particle size control section (weighted average)
Clay content: 35 to 55 percent
Sand content: less than 30 percent
A or Ap horizons
Hue: 5YR, 7.5YR, 10YR
Value: 4 to 6 dry, 3 or 4 moist
Chroma: 3 or 4 dry, 3 to 6 moist
Texture class: loam, sandy clay loam, silty clay loam, clay loam, silty clay, clay
Clay content: 20 to 42 percent
Effervescence class: slight to strong
Reaction: neutral to slightly alkaline
Bt horizon
Hue: 2.5YR, 5YR, 7.5YR
Value: 4 or 5, dry or moist
Chroma: 3 to 6, dry or moist
Texture: silty clay loam, clay loam, silty clay, clay
Clay content: 27 to 50 percent
Effervescence class: slight to strong
Reaction: slightly alkaline to moderately alkaline
Btk horizon
Hue: 5YR, 7.5YR
Value: 5 or 6 dry, 4 or 5 moist
Chroma: 4 to 6, dry or moist
Texture: silty clay loam, clay loam, silty clay, clay
Clay content: 28 to 55 percent
Rock fragments: 0 to 5 percent
Effervescence class: slight to strong
Reaction: moderately alkaline
Bk horizon (where present)
Hue: 5YR, 7.5YR
Value: 5 or 6 dry, 4 or 5 moist
Chroma: 4 to 6 dry, 4 moist
Texture class: silty clay, clay
Clay content: 40 to 56 percent
Rock fragments: 0 to 5 percent
Effervescence class: slight to violent
Reaction: moderately alkaline
COMPETING SERIES: This is the White House (AZ) series. Whitehouse soils are on fan terraces, have greater than 30 percent sand and gravelly textures in the Bk horizons.
GEOGRAPHIC SETTING: The Antbed soils are on alluvial flats in bolsons at elevations of 4,000 to 5,500 feet (1,219 to 1,676 m). Slopes range from 0 to 3 percent. These soils formed in alluvium. The mean annual precipitation is 12 to 16 inches (305 to 406 mm). The mean annual air temperature is 62 to 67 degrees F. (17 to 19 degrees C). The frost-free period is 210 to 250 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Dalby (TX), McAllister (AZ),
Michigan (T) (TX), and
Verhalen (TX) series. Dalby and Verhalen soils have slickensides and are located on basin floors. McAllister soils have a calcic horizon and are located on alluvial fans. Michigan soils lack an argillic horizon and are located on alluvial flats.
DRAINAGE AND PERMEABILITY: Well drained. Runoff is low on slopes less than 1 percent and medium on slopes greater than 1 percent. Permeability is moderate over moderately slow.
USE AND VEGETATION: This soil is used for cropland and livestock grazing. Vegetation consists of tobosa, blue grama, burrograss, sideoats grama, tarbush, and western honey mesquite.
DISTRIBUTION AND EXTENT: Trans-Pecos Texas, LRR D, MLRA 42, Southern Desertic Basins, Plains, and Mountains. The series is of minor extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Phoenix, Arizona
SERIES ESTABLISHED: Hudspeth County, Texas; Soil Survey of Hudspeth County, Texas (Main Part), 2012.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Particle size control section - the zone from 4 to 24 inches (10 to 60 cm) (Bt and Btk1 horizons)
Ochric epipedon - the zone from 0 to 4 inches (0 to 10 cm) (A horizon)
Argillic horizon - the zone from 4 to 65 inches (10 to 165 cm) (Bt, Btk1, and Btk2 horizons)
Soil classified according to Soil Taxonomy, Second Edition, 1999; Keys to Soil Taxonomy, Eleventh Edition, 2010
Revised for the correlation of Hudspeth County, Texas (Main Part) and Culberson County, Texas (Main Part); July, 2012, NMS
ADDITIONAL DATA: None
National Cooperative Soil Survey
U.S.A.