LOCATION WOODVILLE TXEstablished Series
TAXONOMIC CLASS: Fine, smectitic, thermic Vertic Paleudalfs
TYPICAL PEDON: Woodville fine sandy loam on 2 percent slope, in forest. (Colors are for moist soil unless otherwise stated.)
A--0 to 5 inches; dark grayish brown (10YR 4/2) fine sandy loam; common fine and medium faint grayish brown (10YR 5/2) mottles; weak fine granular structure; soft, friable, slightly sticky and nonplastic; many fine medium and coarse roots; strongly acid; clear smooth boundary. (3 to 7 inches thick)
E--5 to 9 inches; pale brown (10YR 6/3) fine sandy loam; many coarse faint brown (10YR 5/3) mottles; weak fine granular structure; soft, friable, slightly sticky and nonplastic; many fne, medium, and coarse roots; strongly acid, clear wavy boundary. (2 to 9 inches thick)
Bt1--9 to 20 inches; dark red (2.5YR 3/6) and red (2.5YR 4/6) clay; common medium prominent pinkish gray (7.5YR 6/2) and light brownish gray (10YR 6/2) mottles; strong fine and medium angular blocky structure; very hard, very firm, very sticky, and very plastic; common fine medium and coarse roots; few small intersecting slickensides; may pressure faces; very strongly acid; diffuse irregular boundary. (8 to 20 inches thick)
Bt2--20 to 45 inches; mottled red (2.5YR 4/6) and light gray (10YR 7/1) clay; common medium prominent reddish yellow (7.5YR 6/6) mottles; strong fine and medium angular blocky structure; very hard, very firm, very sticky, and very plastic; few medium and coarse roots; few medium intersecting slickensides; many pressure faces; very strongly acid; diffuse irregular boundary. (10 to 30 inches thick)
Bt3--45 to 65 inches; light gray (10YR 7/1) clay; common medium prominent dark red (10YR 3/6) and brownish yellow (10YR 6/8) mottles; strong fine angular blocky structure; very hard, very firm, very sticky, and very plastic; few small slickensides; very strongly acid; diffuse irregular boundary. (10 to 30 inches thick)
BCg--65 to 80 inches; light gray (10YR 7/1) clay; few medium prominent dark red (10R 3/6) and common medium prominent brownish yellow (10YR 6/8) mottles; moderate coarse blocky structure; very hard, very firm, very sticky, and very plastic; medium acid.
TYPE LOCATION: Jasper County, Texas; from the intersection of U. S. Highway 96 and 190 in Jasper, 3.2 miles south of U. S. Highway 96, 0.95 mile east along forest road, and 60 feet south in forest.
RANGE IN CHARACTERISTICS: Solum thickness ranges from 60 to more than 80 inches. Clay content ranges from 40 to 60 percent in the upper 20 inches of the argillic horizon, and has a COLE of 0.09 or more. Potential linear extensibility is more than 6 cm.
The A and E horizons are fine sandy loam, very fine sandy loam, or loam. The combined A and E horizons range from 6 to 15 inches thick. Reaction ranges from very strongly acid to slightly acid. The A horizon has hue of 10YR, value of 3 to 5, and chroma of 2 or 3.
The E horizon has a hue of 10YR, value of 5 to 7, and chroma of 2 to 4. Mottles in shades of brown or red range from none to many. The boundary between the E and Bt horizon is abrupt or clear, and smooth or wavy, with an abrupt textural change.
The Bt1 horizon has hue of 2.5YR to 7.5YR, value of 3 to 7, and chroma of 4 to 8. Mottles range from few to common in shades of gray, brown, yellow, and red, and the amount of gray increases with depth. Reaction is very strongly acid or strongly acid.
The Bt2 and Bt3 horizons are typically mottled in shades of gray, red, and brown or have a matrix of these colors with common to many mottles in shades of red, yellow, and brown. Reaction is very strongly acid or strongly acid.
The lower Bt horizons and BC horizon when encountered have colors in shades of gray, red, yellow, brown, and olive. Reaction is mainly medium acid or slightly acid, but ranges to moderately alkaline. Some pedons contain pitted concretions of calcium carbonate.
COMPETING SERIES: These are the Annona, Bryarly, and Susquehanna series in the same family and the Angie, Boswell, Millwood, Newco, Wilcox, and Woodtell series. Annona and Bryarly soils are more alkaline in the upper Bt horizons. Angie and Newco soils have base saturation of less than 35 percent, in addition, Newco soils have C horizons within 60 inches. Susquehanna soils lack a water table within 6 feet and have lower reaction in the lower horizons. In addition, Bryarly soils lack an abrupt change between the A and Bt horizons. Boswell soils lack low chroma mottles in the upper 10 inches of the Bt and have mixed mineralogy. Millwood soils contain more than 60 percent clay in the control section and lack low chroma mottles in the upper 10 inches of the Bt horizon. Wilcox soils lack an abrupt textural change between the A and Bt horizons and are underlain by soft shale within 60 inches. Woodtell soils have C horizons within 60 inches, and are on Eocene age and older geological formations.
GEOGRAPHIC SETTING: Woodville soils are on slightly convex, gently sloping to strongly sloping uplands of the West Coastal Plains. Slopes range from 1 to 12 percent. The soils formed in thick beds of unconsolidated clayey sediments of Miocene age, mainly of the Fleming formation. Mean annual precipitation ranges from 46 to 58 inches. Summer rainfall ranges from 30 to 40 inches. Summer moisture deficit ranges from 0 to 4 inches. Mean annual temperature ranges from 66 to 70 degrees F., and the Thornthwaite annual P-E indices exceed 72.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Burkeville, Dylan, Redco, Vamont, and Wiergate series. Dylan, Wiergate, and Burkeville soils are on slightly lower side slopes and concave positions and contain calcium concretions. Redco and Vamont soils have clayey surface layers, are on the same positions and on slightly convex positions nearby.
DRAINAGE AND PERMEABILITY: Woodville soils are somewhat poorly drained. Runoff is slow to medium, and permeability is very slow.
USE AND VEGETATION: These soils are used mainly for timber and pasture. Forest vegetation includes loblolly, shortleaf, slash, and longleaf pines, sweetgum, red oak, and hickory trees with an understory of grasses and shrubs. Pastures are mainly bermudagrass and bahiagrass.
DISTRIBUTION AND EXTENT: Southeastern Texas and southwest Louisiana. The series is of moderate extent.
REMARKS: Diagnostic horizons and features of this pedon are:
Ochric epipedon - 0 to 9 inches
Argillic horizon - 9 to 80 inches
The soil has high shrink - swell potential and vertic properties.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Temple, Texas
SERIES ESTABLISHED: Jasper County, Texas; 1980.