LOCATION VINITA OK

Established Series
Rev. CRC-CS-RGC
12/2020

VINITA SERIES

The Vinita series consists of moderately deep, somewhat poorly drained soils that formed from shales interbedded with thin layers of sandstone of Pennsylvanian age. These soils are on ridges and side slopes on uplands in the Cherokee Prairies (MLRA 112). Slope ranges from 2 to 30 percent. Mean annual precipitation is 1016 millimeters (40 inches) and mean annual air temperature is 16 degrees C (60 degrees F).

TAXONOMIC CLASS: Fine, mixed, active, thermic Aquic Hapludults

TYPICAL PEDON: Vinita loam--in rangeland on a side slope, at an elevation of 225 meters (738 feet) above mean sea level. (Colors are for moist soil unless otherwise stated.)

A--0 to 20 centimeters (0 to 8 inches); very dark grayish brown (10YR 3/2) loam, grayish brown (10YR 5/2) dry; moderate medium granular structure; hard, friable; sandstone fragments less than 73 millimeters (3 inches) in diameter make up 10 percent by volume, and fragments 75 to 305 millimeters (3 to 12 inches) in diameter make up 5 percent by volume; very strongly acid; gradual smooth boundary. [15 to 25 centimeters (6 to 10 inches) thick]

2Bt--20 to 41 centimeters (8 to 16 inches); variegated pattern of reddish brown (5YR 4/4), yellowish brown (10YR 5/4), and grayish brown (10YR 5/2) clay; moderate medium and fine blocky structure; very hard, very firm; clay films on faces of peds; very strongly acid; gradual smooth boundary. [10 to 38 centimeters (4 to 15 inches) thick]

2BCt--41 to 71 centimeters (16 to 28 inches); brown (10YR 5/3) clay; moderate medium blocky structures; extremely hard, very firm; clay films on faces of peds; many medium and fine distinct gray (10YR 6/1) and light brownish gray (10YR 6/2) redoximorphic depletion masses and prominent yellowish red (5YR 4/6) and red (2.5YR 4/6) redoximorphic concentration masses; few shale fragments; very strongly acid; gradual smooth boundary. [15 to 38 centimeters (6 to 15 inches) thick]

2Cr--71 to 86 centimeters (28 to 34 inches); brown (10YR 5/3) shale with layers of clay that have many medium distinct gray (10YR 5/1) redoximorphic iron depletion masses and yellowish brown (10YR 5/6) redoximorphic iron concentration masses; extremely hard, very firm; very strongly acid.

TYPE LOCATION: Craig County, Oklahoma; about 6 miles west of Vinita; in rangeland on the south side of U.S. Highway 60; 1,320 feet south and 2,500 feet east of the northwest corner of sec. 22, T.25N., R.19E.; Estella topographic quadrangle; latitude 36.6373278 degrees and longitude -95.2612083 decimal degrees; WGS84.

RANGE IN CHARACTERISTICS: Solum thickness ranges from 50 to 100 centimeters (20 to 40 inches). A discontinuity typically occurs between the A and 2Bt horizons or between the BA and 2Bt horizons.

A horizon:
Hue: 10YR
Value: 3
Chroma:2 or 3
Texture: loam, fine sandy loam, silt loam, or silty clay loam
Clay content: 15 to 35 percent
Sand content: 5 to 60 percent
Rock fragment content: Sandstone fragments less than 75 millimeters (3 inches) in diameter make up 0 to 10 percent by volume, and fragments 75 to 305 millimeters (3 to 12 inches) in diameter make up 0 to 10 percent by volume.
Reaction: very strongly acid or strongly acid

BA horizon, where present:
Hue: 5YR to 10YR
Value: 4 to 6
Chroma: 3 or 4
Texture: silty clay loam or clay loam
Clay content: 27 to 35 percent
Reaction: very strongly acid or strongly acid
Thickness of the BA horizon ranges from 0 to 20 centimeters (0 to 8 inches).

2Bt horizon:
Hue: 5YR to 10YR
Value: 4 or 5
Chroma: 2 to 6
Texture: silty clay loam, silty clay, or clay
Clay content: 35 to 55 percent
Sand content: 5 to 45 percent
Reaction: very strongly acid or strongly acid.

Redoximorphic iron concentration masses are in shades of gray, brown, or red, and redoximorphic iron depletion masses with chroma of 1 or 2 are always present.

2BCt or 2BC horizon:
Hue: 5YR to 10YR
Chroma: 2 to 6
Texture: silty clay loam, clay loam, silty clay, or clay
Clay content: 35 to 55 percent
Sand content: 5 to 45 percent
Rock fragment content: few shale fragments
Reaction: very strongly acid or strongly acid

The base saturation is less than 35 percent by the sum of cations.

2Cr horizon has colors in shades of brown or gray. It is shale with thin strata of clay, and some pedons are underlain with sandstone. Reaction is very strongly acid or strongly acid.

COMPETING SERIES: These are Peawick, Sacul, and Stapp series. Peawick, Sacul, and Stapp soils have a solum that is more than 102 cm (40 inches) thick.

GEOGRAPHIC SETTING: Vinita soils are on very gently sloping to steep ridges and side slopes of uplands in the Cherokee Prairies. They formed in shales interbedded with thin layers of sandstone of Pennsylvanian age. Slopes range from 2 to 30 percent. The climate is humid. Mean annual precipitation ranges from 940 to 1092 millimeters (37 to 43 inches). Mean annual temperature ranges from 14 to 17 degrees C (57 to 62 degrees F). Thornthwaite annual P-E indices is 64 to 80. Frost free period is 200 to 220 days. Elevation is 190 to 320 meters (623 to 1050 feet) above mean sea level.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Bates, Collinsville, and Dennis soils. Bates, Collinsville, and Dennis soils usually occur on higher landscapes. Bates, Collinsville, and Dennis soils have more than 50 percent base saturation throughout by the ammonium acetate method. In addition, Bates soils have a fine-loamy control section. Collinsville soils lack argillic horizons, have a lithic contact within 20 inches, and have a loamy control section. Dennis soils have a solum more than 60 inches thick.

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Vinita soils are somewhat poorly drained. Depth to the top of a perched water table is at a depth of 30 to 60 centimeters (12 to 24 inches) from November throught April. Potential for surface runoff is medium to very high. Saturated hydraulic conductivity is moderately high (4 to 14 micrometers per second) in the surface horizon and moderately low (0.4 to 1.4 micrometers per second in the subsoil. Permeability is slow.

USE AND VEGETATION: Used mainly for range. Native vegetation is tall grass prairie. Scattered sumac and hawthorne occur on a minor percent of the area.

DISTRIBUTION AND EXTENT: Cherokee Prairies (MLRA 112) of Oklahoma. The series is of small extent.

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Indianapolis, Indiana

SERIES ESTABLISHED: Craig County, Oklahoma; 1972.

REMARKS: Soil Interpretation Record: Series OK0075
Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - the zone from the surface of the soil to a depth of 20 centimeters (8 inches) (A horizon)
Argillic horizon - the zone from 20 to 70 centimeters (8 to 28 inches) (2Bt, 2BCt horizons)
Udult feature - the occurrence of base saturation less than 35 percent in horizon just above the paralithic contact (2BCt horizon).
Aquic condition: the argillic horizon has redoximorphic iron depletion masses with chromas of 2 or less and redoximorphic iron concentration masses with chromas of 4 or more (2Bt, 2BCt horizons)

Taxonomic classification updated with 03/2014 revision. Particle-size class changed from clayey to fine. Competing series updated.

National Cooperative Soil Survey
U.S.A.