LOCATION YEATON TXEstablished Series
TAXONOMIC CLASS: Fine, smectitic, thermic Aquic Hapludalfs
TYPICAL PEDON: Yeaton loam, on a 0.2 percent slope in a cultivated field. (Colors are for moist soil unless otherwise stated.)
Ap--0 to 8 inches; dark gray (10YR 4/1) loam, weak fine subangular blocky structure; slightly hard, friable; many fine, medium, and few coarse roots; few fine and medium pores; neutral; clear smooth boundary. (3 to 10 inches)
E--8 to 13 inches; dark grayish brown (2.5Y 4/2) loam; common fine and medium distinct light olive brown (2.5Y 5/4) and few fine distinct light olive brown (2.5Y 5/6) mottles; weak coarse subangular blocky structure; slightly hard, friable; few fine roots; few fine pores; common fine dark concretions; mildly alkaline; clear smooth boundary. (4 to 9 inches)
Bt1--13 to 22 inches; olive yellow (2.5Y 6/6) clay loam; few fine faint light olive brown and common fine and medium distinct light brownish gray (2.5Y 6/2) mottles; moderate fine angular blocky structure; extremely hard, very firm; few fine roots; few fine pores; common pressure faces; common light brownish gray and grayish brown clay films on faces of peds; few fine and coarse calcium carbonate concretions; slightly effervescence; neutral; gradual wavy boundary. (6 to 12 inches)
Bt2--22 to 33 inches; light olive brown (2.5Y 5/6) clay loam; common fine and medium distinct light brownish gray (2.5Y 6/2) and few fine distinct yellowish brown (10YR 5/6) mottles; moderate medium angular blocky structure; extremely hard, very firm; few fine roots; few fine pores; common light brownish gray clay films on faces of some peds; few slickensides; few fine and coarse calcium carbonate concretions; slight effervescence; mildly alkaline; clear wavy boundary. (0 to 12 inches)
Btk1--33 to 45 inches; light brownish gray (10YR 6/2) loam; common medium distinct brown (10YR 5/3) and yellowish brown (10YR 5/4), common fine and medium prominent olive yellow (2.5Y 6/6), and common fine prominent light olive brown (2.5Y 5/6) mottles; moderate coarse prismatic structure parting to weak medium subangular blocky; very hard, firm; few fine roots; few fine pores; common gray clay films on faces of peds; few fine dark concretions; about 25 percent calcium carbonate concretions and soft masses by volume; strong effervescence; moderately alkaline; gradual wavy boundary. (6 to 18 inches)
Btk2--45 to 61 inches; light brownish gray (10YR 6/2) loam; many coarse distinct brown (10YR 5/3) and yellowish brown (10YR 5/4, 5/6), and many medium and coarse prominent olive yellow (2.5Y 6/6); also few fine faint very pale brown mottles; moderate coarse prismatic structure parting to weak medium subangular blocky; very hard, very firm; few fine roots; few fine pores; common gray clay films on faces of peds; few fine dark concretions; about 20 percent calcium carbonate concretions and soft masses by volume; strong effervescence; moderately alkaline; gradual wavy boundary. (0 to 18 inches)
Btk3--61 to 80 inches; light yellowish brown (10YR 6/4) silt loam; common medium and coarse distinct brownish yellow (10YR 6/6), common fine and medium distinct light gray (10YR 7/1), common medium distinct yellowish brown (10YR 5/8), and few fine and medium faint very pale brown (10YR 7/4) mottles; moderate coarse prismatic structure parting to weak medium angular blocky; very hard, very firm; few fine roots; few fine pores; few dark concretions and soft masses; about 16 percent calcium carbonate concretions and soft masses by volume; strong effervescence; moderately alkaline.
TYPE LOCATION: Liberty County, Texas; from the intersection of U.S. Highway 90 and Texas Highway 146 at Dayton, Texas; 5.5 miles south on Texas Highway 146; site is 300 feet west in field.
RANGE IN CHARACTERISTICS: Solum thickness ranges from 60 to more than 80 inches. Depth to secondary carbonates ranges from 13 to 28 inches. However, depth to a horizon with 5 percent or more secondary carbonates is typically 30 to 48 inches. Depth to mottles with chroma of 2 or less ranges from about 12 to 30 inches. Clay content of the control section ranges from 35 to 40 percent.
The A horizon has hue of 10YR, value of 3 through 5, and chroma of 1 or 2. When values are 3, the layer is less than 7 inches thick. It is very fine sandy loam, silt loam, or loam. Reaction ranges from slightly acid through mildly alkaline.
The E horizon has hue of 10YR or 2.5Y, value of 4 through 6, and chroma of 2 through 4. Some pedons have an EB horizon with chroma of 5 or 6. Mottles range from none to common in shades of brown, yellow, and olive. It is very fine sandy loam, silt loam, or loam. Reaction ranges from slightly acid through mildly alkaline.
The Bt horizon has matrix colors in hue of 7.5YR through 2.5Y, value of 4 through 7, and chroma of 4 through 8. Mottles range from few to many in shades of red, brown, yellow, gray, or olive. It is clay loam, silty clay loam, or silty clay. Reaction ranges from neutral through moderately alkaline. Concretions and soft masses of calcium carbonate range from none to less than 2 percent by volume.
The Btk horizon has hue of 10YR or 2.5Y, value of 5 through 7, and chroma of 2 through 8. Mottles range from few to many in shades of brown, yellow, and gray. It is silt loam, loam, or silty clay loam. It is mildly alkaline or moderately alkaline. Concretions and soft masses of calcium carbonate range from 15 to 35 percent by volume.
COMPETING SERIES: There are not competing series in the same family. Series in similar families include Annona, Atasco, Bryarly, Fetzer, Jeanerette, Katy, and Woodville series. Annona, Bryarly, and Woodville soils do not have free carbonates in the upper part of the solum. Atasco soils have tonguing of the E horizon into the Bt horizon and are more acid throughout. Fetzer and Katy soils are in a fine-loamy family and are more acid throughout. Jeanerette soils have mollic epipedons and are in a fine-silty family.
GEOGRAPHIC SETTING: Yeaton soils are on nearly level to very gently sloping, mounded landscapes of the Gulf Coast Prairie. These soils are on the mound part of the landscape and are typically mapped in a complex with other soils. Slopes range from 0 to 2 percent. The soil formed in calcium carbonate-enriched clayey and loamy marine sediments of the Pleistocene age. Mean annual temperature is 67 to 70 degrees F. Mean annual precipitation ranges from 48 to 58 inches and is fairly evely distributed throughout the year. The Thornthwaite annual P-E indices range from 70 to 80.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Aris, Bernard, Crowley, Midland, Mocarey, and Morey soils. All of these soils are dominated by gray colors and in addition Mocarey soils do not have an argillic horizon. Aris and Crowley soils are on higher landscape positions. Bernard and Midland when mapped in complex with Yeaton soils are in lower intermound positions. Mocarey and Morey when mapped in complex with Yeaton soils are in similar positions or in lower intermound positions. In other areas the Bernard and Midland soils are in slightly lower positions while Mocarey and Morey soils are generally in similar positions.
DRAINAGE AND PERMEABILITY: Somewhat poorly drained. Runoff is slow. Permeability is slow. A perched water table periodically occurs at a depth of about 12 to 18 inches during the winter months.
USE AND VEGETATION: Used mainly for rice and soybean production. A few areas are in improved bahia and bermudagrass pastures.
DISTRIBUTION AND EXTENT: Gulf Coast Prairie of Southeast Texas. The series is moderately extensive.
MLRA OFFICE RESPONSIBLE: Temple, Texas
SERIES ESTABLISHED: Liberty County, Texas; 1986. The name is coined.
REMARKS: These soils were formerly mapped with Bernard and Morey soils.
Diagnostic horizon and features recognized in this pedon are:
Ochric epipedon - Typically includes the A and E horizon.
Argillic horizon - The zone from 13 to 80 inches.
Calcic horizon - The zone from 33 to 80 inches.
Gray mottles due to wetness - 13 to 33 inches; below is dominately gray.
This soil is located in the udic moisture regime, it is not marginal to the ustic moisture regime.
ADDITIONAL DATA: TAES S83TX-291-03