LOCATION TEAGARD OKEstablished Series
TAXONOMIC CLASS: Fine, smectitic, thermic Typic Haplusterts
TYPICAL PEDON: Teagard clay loam, rangeland. (Colors are for dry soil unless otherwise stated.)
A--0 to 9 inches; brown (7.5YR 4/2) clay loam, dark brown (7.5YR 3/2) moist; moderate fine subangular blocky structure parting to moderate coarse granular; very hard, very firm; many fine and very fine roots; common medium faint relic redoximorphic accumulations of yellowish brown (10YR 5/4); few very fine concretions of calcium carbonate; slightly effervescent; slightly alkaline; clear smooth boundary. (7 to 14 inches thick)
Bkss--9 to 18 inches; brown (10YR 4/3) clay, dark brown (10YR 3/3) moist; strong medium angular blocky structure; extremely hard, extremely firm; few very fine roots; common medium faint yellowish brown (10YR 5/4) relic redoximorphic accumulations; few fine and common very fine concretions of calcium carbonate; few slickensides; few pressure faces; vertical cracks filled with brown (7.5YR 4/2) material; strongly effervescent; moderately alkaline; clear smooth boundary.(7 to 15 inches thick)
BCkss--18 to 26 inches/ light brownish gray (2.5Y 6/2) clay, grayish brown (2.5Y 5/2) moist; strong medium angular blocky structure; extremely hard, extremely firm; very few very fine roots; few fine distinct yellowish brown (10YR 5/8) relic redoximorphic accumulations; few fine and common very fine concretions of calcium carbonate; few slickensides; vertical cracks filled with brown (7.5YR 4/2) material; strongly effervescent; moderately alkaline; clear wavy boundary.(5 to 11 inches thick)
Cr--26 to 40 inches; gray (5Y 6/1) shale, gray (5Y 5/1) moist; massive; extremely hard, extremely firm; very few very fine roots in some fractures; common strata of interbedded light yellowish brown (2.5Y 6/4) shale and brownish yellow (10YR 6/8) sandstone; fracture faces are lined with coatings of calcium carbonate; strongly effervescent; moderately alkaline.
TYPE LOCATION: Woods County, Oklahoma; about 2 miles south of Kansas state line on state highway 34 and 1 mile east; 2000 feet north and 250 feet west of the southeast corner of sec. 24, T. 29N., R. 20W.
RANGE IN CHARACTERISTICS: The thickness of the solum and depth to shale ranges from 20 to 40 inches. Depth to secondary calcium carbonates ranges from 0 to 10 inches. Cracks more than 1cm wide extend from the surface to depths of greater than 12 inches during some season in most years. Slickensides range from few to common. The 10 to 40 inch control section ranges from 35 to 60 percent clay content. The mollic epipedon ranges from 8 to 20 inches thick.
The A horizon has hue of 7.5YR or 10YR, value of 4, and chroma of 2 or 3. It is clay loam, silty clay loam, or clay. Clay content ranges from 27 to 45 percent. Reaction is slightly alkaline or moderately alkaline. The A horizon is typically calcareous but some pedons may be noncalcareous.
The Bkss horizon has hue of 10YR or 2.5Y, value of 4 or 5, and chroma of 2 to 4. It is clay, silty clay, silty clay loam, and clay loam. Clay content ranges from 35 to 60 percent. COLE exceeds 0.07. Vertical cracks are filled with darker material from the A horizon. Reaction is moderately alkaline and calcareous. Some pedons have relic redoximorphic features in shades of yellowish brown and gray.
The BCkss horizon has hue of 10YR to 5Y, value of 3 to 6, and chroma of 1 to 6. It is clay, silty clay, and shaly clay. Clay content ranges from 40 to 60 percent. COLE exceeds 0.07. Some vertical cracks are filled with darker material from the A horizon. Reaction is moderately alkaline and calcareous. Pockets and discontinuous strata of weathered shale make up 5 to 50 percent of this horizon. Some pedons have relic redoximorphic features in shades of yellowish brown, gray, yellow, or red.
The C horizon, where present, has hue of 10YR to 5Y, value of 2 to 7, and chroma of 1 to 8. It is clay or clayey shale. Reaction is moderately alkaline and calcareous.(5 to 12 inches thick)
The Cr horizon has hue of 10YR to 5Y, value of 2 to 7, and chroma of 1 to 8. This is highly stratified dark gray or gray shale with pockets and interbedded strata of yellow (10YR 5/8), yellowish brown (10YR 5/6), brownish yellow (10YR 6/6, 6/8), light olive brown (2.5Y 5/4), and light yellowish brown (2.5Y 6/4). Reaction is moderately alkaline. The shale matrix ranges from calcareous to noncalcareous, but cracks and strata faces are coated with powdery calcium carbonate. This is non-paralithic material with rock like structure, is root restrictive, and fractures may be less than 10 cm apart or greater than 10 cm apart. This material has low to moderate excavation difficulty. Most of this material will slake in water within 15 hours.
COMPETING SERIES: These are the Campwood, Hollister, Indiahoma and Leeray series in the same family. All these competing series are very deep.
GEOGRAPHIC SETTING: Teagard soils are on gently sloping to moderately steep narrow ridge tops and side slopes. Slopes range from 3 to 20 percent. The soil formed in clayey Kiowa shale of Cretaceous age. Mean Annual Precipitation: 21 to 30 inches. Mean Annual Temperature: 57 to 61 degrees F. Thornthwaite Annual P-E indices: 33 to 44. Frost free days range from 185 to 210. Elevation ranges from 1800 to 2200 feet.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Case, Mansic, Oklark, Quinlan, Woodward, Woods, and Wellsford soils. Case, Mansic, Oklark, and Woods soils are on higher elevations. Case and Mansic soils have fine-loamy textural control sections. Oklark soils have coarse-loamy textural control sections. Woods soils have and argillic horizon and are more than 40 inches deep. Wellsford soils lack a mollic epipedon and are less than 20 inches deep. Quinlan and Woodward soils are on lower positions and have less than 35 percent clay in the textural control sections.
DRAINAGE AND PERMEABILITY: Well drained, runoff is high or very high. Permeability is very slow.
USE AND VEGETATION: The principle use is for rangeland. Native vegetation is mainly short and mid grasses.
DISTRIBUTION AND EXTENT: Central Rolling Red Plains (MLRA-78C) of North-central Oklahoma and south-central Kansas. The series is of small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Temple, Texas.
SERIES ESTABLISHED: Woods County, Oklahoma, 1995.
REMARKS: Soil Interpretation Record: Series OK0398
Diagnostic horizons and features recognized in this pedon are:
Mollic epipedon - the zone from the surface of the soil to a depth of approximately 9 inches (A horizon).
Cambic horizon - the zone from approximately 9 inches to 18 inches (B horizon).
Non-Paralithic contact Cr- Material with low to moderate excavation difficulty begins at 26 inches.
Moisture Regime: Typic-Ustic.
These soils were formerly mapped in the Owens and Wellsford Series.