LOCATION HONOBIA OKEstablished Series
TAXONOMIC CLASS: Clayey-skeletal, mixed, semiactive, thermic Typic Hapludults
TYPICAL PEDON: Honobia stony fine sandy loam, in forest. (Colors are for moist soil unless otherwise stated.)
A--0 to 4 inches; dark grayish brown (10YR 4/2) stony fine sandy loam; weak fine and medium granular structure; very friable; many roots of all sizes; flat fragments of sandstone and shale less than 3 inches in diameter make up 25 percent by volume; 10 percent stones by volume; slightly acid; clear smooth boundary. (3 to 8 inches thick)
BE--4 to 8 inches; strong brown (7.5YR 5/6) stony fine sandy loam; weak fine and medium granular structure; very friable; many roots of all sizes; flat fragments of sandstone and shale less than 3 inches in diameter makes up 25 percent by volume; 10 percent stones by volume; medium acid; clear wavy boundary. (3 to 8 inches thick)
Bt1--8 to 16 inches; yellowish red (5YR 5/6) very shaly clay loam; moderate fine and medium subangular blocky structure; firm; common roots of all sizes; clay films on faces of peds; flat fragments of shale and sandstone less than 3 inches in diameter make up 40 percent by volume; strongly acid; gradual smooth boundary. (8 to 14 inches thick)
Bt2--16 to 26 inches; yellowish red (5YR 5/6) very shaly clay; strong medium subangular blocky structure; very firm; common roots of all sizes; clay films on faces of peds; flat fragments of sandstone and shale less than 3 inches in diameter make up 40 percent by volume; common coarse distinct strong brown (7.5YR 5/6), yellowish brown (10YR 5/6), and red (2.5YR 4/6) iron accumulations; very strongly acid; gradual smooth boundary. (4 to 16 inches thick)
Bt3--26 to 36 inches; yellowish red (5YR 5/6) very shaly clay; moderate medium subangular blocky structure; very firm; few roots of all sizes; patchy clay films on faces of peds; flat fragments of sandstone and shale less than 3 inches in diameter make up 50 percent by volume; common coarse distinct strong brown (7.5YR 5/6), yellowish brown (10YR 5/6), and red (2.5YR 4/6) iron accumulations; very strongly acid; gradual irregular boundary. (4 to 12 inches thick)
Cr--36 to 40 inches; olive shale, tilted 40 degrees from horizontal.
TYPE LOCATION: Pushmataha County, Oklahoma; about 5 miles west of Honobia; 700 feet west and 900 feet south of the northeast corner of sec. 32, T. 1 N., R. 22 E.
RANGE IN CHARACTERISTICS: Solum thickness and depth to bedrock ranges from 20 to 40 inches. Reaction ranges from slightly to strongly acid in the A horizons and from medium to very strongly acid in the B2t horizons. Stony and gravelly phases are recognized.
The A horizon has hue of 10YR, values ranging from 3 to 5, and chromas from 1 to 3. The fine-earth fraction of the soil is fine sandy loam or loam. Flat fragments of sandstone or shale from 2 mm to 3 inches in diameter make up 20 to 40 percent by volume and from 3 inches to 24 inches in diameter make up 0 to 20 percent by volume.
The E horizon has hue 10YR, values 5 or 6 and chromas from 3 or 4. The fine-earth fraction of the soil is loam or fine sandy loam. Flat fragments of sandstone or shale from 2 mm to 3 inches in diameter make up 20 to 40 percent by volume and from 3 inches to 24 inches diameter make up 0 to 20 percent by volume.
The BE horizon has hue of 7.5YR, and 10YR, values ranging from 4 or 5 and chromas from 4 to 6. The fine-earth fraction of the soil is loam or fine sandy loam. Flat fragments of sandstone or shale from 2 mm to 3 inches in diameter make up 20 to 40 percent by volume and from 3 inches to 24 inches diameter make up 0 to 20 percent by volume.
The Bt1 horizon has hues of 5YR, 7.5YR, and 10YR; values of 4 or 5, and chromas ranging from 4 to 8. The fine-earth fraction of the soil is clay loam or clay with clay content of 35 to 45 percent. Flat fragments of sandstone and shale from 2 mm to 3 inches in diameter make up 35 to 50 percent by volume.
The Bt2 and Bt3 horizons have hues of 2.5YR to 10YR, values ranging from 4 to 6, and chromas from 4 to 8. These horizons have iron accumulations in shades of red and brown. The fine-earth fraction of the soil is clay. Flat fragments of sandstone and shale from 2 mm to 3 inches in diameter make up 35 to 70 percent by volume.
The Cr horizon is olive or gray fractured shale that is tilted 20 degrees to 90 degrees from horizontal.
COMPETING SERIES: These are the
Carnasaw,
Enders,
Hartsells,
Kirvin,
Lillington,
Linker,
Lockhart,
Pirum,
Saffell,
Shermore,
Sherwood,
Subligna, and
Zafra series. Carnasaw, Enders, and Kirvin soils have less than 35 percent by volume of fragments coarser than 2 mm in diameter. Hartsells, Linker, Pirum, Shermore, and Sherwood soils have less than 35 percent by volume of fragments coarser than 2 mm in diameter and have siliceous mineralogy. Lillington, Saffell, Subligna, and Zafra soils have less than 35 percent clay content in the control section and have siliceous mineralogy. Lockhart soils have less than 35 percent
clay content in the control section.
GEOGRAPHIC SETTING: Honobia soils are on strongly sloping to moderately steep forested valleys of the Ouachita Mountains. Slopes range from 8 to 20 percent. Mean annual precipitation ranges from 40 to 46 inches. Mean annual temperature ranges from 60 degrees to 64 degrees F. Thornthwaite annual P-E indices are greater than 64.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Clebit, Nashoba, Pickens, Sobol, and Tuskahoma series. Clebit, Pickens, and Tuskohoma soils usually occur on ridges and have sola less than 20 inches thick. In addition, Clebit and Pickens soils have less than 35 percent clay content in the control section, and Clebit soils lack argillic horizons. Tuskahoma soils have less than 35 percent fragments in the control section. Nashoba soils occur on similar areas but have less than 35 percent clay. Sobol soils occur on similar areas but have less than 35 percent coarse fragments in the control section, have base saturation greater than 35 percent in the lower argillic horizon, and have wetness mottles in the upper argillic horizon.
DRAINAGE AND PERMEABILITY: Honobia soils are well drained. Runoff is medium to rapid and permeability is slow
USE AND VEGETATION: Used mainly as forest. Native vegetation is pine and oak.
DISTRIBUTION AND EXTENT: Ouachita Mountains of Oklahoma and possibly Arkansas. The series is moderately extensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Temple, Texas
SERIES ESTABLISHED: Pushmataha County, Oklahoma; 1977.
REMARKS: These soils were previously classified in the Lithosol great soil group and included in the Pickens series.