LOCATION DEEPWOOD OKEstablished Series
TAXONOMIC CLASS: Coarse-silty, mixed, superactive, thermic Typic Haplustepts
TYPICAL PEDON: Deepwood loam, on a 4 percent slope in rangeland. (Colors are for dry soil unless otherwise stated.)
A--0 to 11 inches; reddish brown (5YR 4/4) loam, dark reddish brown (5YR 3/4) moist; weak fine granular structure; soft, very friable; many very fine and fine roots; common worm casts; very slightly effervescent; moderately alkaline; clear smooth boundary. (4 to 12 inches thick)
Bk1--11 to 21 inches; reddish brown (5YR 5/4) loam, reddish brown (5YR 4/4) moist; weak coarse prismatic structure parting to weak fine and medium subangular blocky; slightly hard, friable; common very fine and fine roots; common worm casts; common fine concretions of calcium carbonate; strongly effervescent; moderately alkaline; clear smooth boundary. (4 to 17 inches thick)
Bk2--21 to 47 inches; yellowish red (5YR 5/6) loam, yellowish red (5YR 4/6) moist; weak medium prismatic structure parting to weak fine subangular blocky; slightly hard, friable; few very fine and fine roots; common worm casts; common fine concretions of calcium carbonate; common fine threads of calcium carbonate; strongly effervescent; moderately alkaline; clear smooth boundary. (11 to 26 inches thick)
C--47 to 80 inches; yellowish red (5YR 5/6) loam, yellowish red (5YR 4/6) moist; massive; slightly hard, friable; few very fine roots; slightly effervescent; moderately alkaline.
TYPE LOCATION: Woods County, Oklahoma; about 8 miles north and 4 miles west of Freedom, Oklahoma; about 200 feet north and 650 feet east of the southwest corner of sec. 24, T. 28 N., R. 19 W.
RANGE IN CHARACTERISTICS: Solum thickness ranges from 30 to 60 inches. Depth to soft powdery secondary lime ranges from 0 to 36 inches of the soil surface. Typically the soil is calcareous throughout.
The A horizon has hue of 2.5YR to 7.5YR, value of 4 to 6, and chroma of 3 to 6. The epipedon is less than 18 cm thick when the moist value and chroma is less than 3.5. The A horizon is loam, silt loam, or very fine sandy loam. Reaction is neutral through moderately alkaline. Calcium carbonate equivalent ranges from 0 to 5 percent.
The Bk or Bw horizons have hue of 2.5YR to 7.5YR, value of 4 to 6, and chroma of 3 to 8. Texture is loam, silt loam, or very fine sandy loam and reaction is slightly or moderately alkaline. Content of calcium carbonate as nodules, masses, and threads ranges from 0 to 10 percent by volume and Calcium Carbonate Equivalent ranges from 1 to 15 percent.
The BCk horizon, where present, has hue of 2.5YR to 7.5YR, value of 4 to 6, and chroma of 3 to 8. Texture is loam, silt loam, or very fine sandy loam and reaction is slightly or moderately alkaline.
The C horizon has hue of 2.5YR or 5YR, value of 4 to 6, and chroma of 4 to 8. Texture is loam, silt loam, or very fine sandy loam. Reaction is slightly or moderately alkaline and Calcium Carbonate Equivalent ranges from 1 to 10 percent. Some pedons have soft sandstone below 70 inches.
COMPETING SERIES: These are the Enterprise, Gotebo, and Woodward series in the same family. Enterprise soils are formed from eolian material along major streams. Gotebo soils have hues of 10YR or yellower throughout the B and C horizons. Woodward soils have soft sandstone within 40 inches of the surface.
GEOGRAPHIC SETTING: Deepwood soils are on very gently sloping to steep upland ridgecrests and side slopes of the Central Rolling Red Plains (MLRA 78C). Slopes are 1 to 30 percent. The soil formed in local alluvial colluvial valley fill that weathered from sandstone of Permian age. Mean Annual Precipitation: 20 to 28 inches. Mean Annual Temperature: 57 to 65 degrees F. Thornthwaite Annual P-E indices: 28 to 44. Frost free days: 190 to 220. Elevation: 1200 to 2300 feet.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the competing Gotebo and Woodward series, and Aspermont, Carey, Dill, Enterprise, Hardeman, Obaro, Selman, and Quinlan series.
Aspermont and Obaro soils are on nearby slopes and have a fine-silty textural control section. Carey and Selman soils are on nearby slopes and have an argillic horizon, a mollic epipedon, and a fine-silty textural control section. Dill soils are on higher elevations and have a coarse- loamy textural control section. Hardeman and Enterprise soils are on similar positions but formed in eolian material along streams and in addition Hardeman soils have a coarse-loamy textural control section. Gotebo soils are on similar positions but have hue of 10YR or yellower throughout the B and C horizons. Quinlan soils are on nearby ridgecrests and back slopes and are less than 20 inches to sandstone. Woodward soils are on similar positions but are less than 40 inches to sandstone.
DRAINAGE AND PERMEABILITY: Deepwood soils are well drained. Runoff is very low to medium and permeability is moderate.
USE AND VEGETATION: More than one half is native range used for grazing beef cattle. Considerable acreage of Deepwood on lesser slopes is used for growing small grains and sorghums. The native grasses are mainly little bluestem and gramas.
DISTRIBUTION AND EXTENT: Central Rolling Red Plains (MLRA-78C) of Oklahoma, Kansas, and Texas. The series is extensive.
MLRA OFFICE RESPONSIBLE: Temple, Texas
SERIES ESTABLISHED: Woods County, Oklahoma; 1995.
REMARKS: Soil Interpretation Record: Series OK0425
These soils were formerly included with the Woodward series.
Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - the zone from the surface of the soil to a depth of approximately 11 inches (A horizon).
Cambic horizon - the zone from approximately 11 inches to 47 inches (B horizons).