LOCATION LILBERT TXEstablished Series
TAXONOMIC CLASS: Loamy, siliceous, semiactive, thermic Arenic Plinthic Paleudults
TYPICAL PEDON: Lilbert loamy fine sand on a 4 percent slope in forest; elevation is 149 m (490 ft) (Colors are for moist soil unless otherwise stated.)
A--0 to 10 cm (0 to 4 in) grayish brown (10YR 5/2) loamy fine sand; weak medium granular structure; very friable, non sticky, non plastic; many fine and medium roots throughout; common fine tubular pores; very strongly acid (pH 4.5); clear smooth boundary. (Thickness is 8 to 25 cm [3 to 10 in].)
E1--10 to 28 cm (4 to 11 in) light yellowish brown (10YR 6/4) loamy fine sand; weak medium subangular blocky structure parting to weak medium granular; very friable, non sticky, non plastic; common fine and medium roots throughout; many fine and medium tubular pores; very strongly acid (pH 4.6); gradual smooth boundary. (Combined thickness of E horizons is 25 to 94 cm [10 to 37 in].)
E2--28 to 61 cm (11 to 24 in) pale brown (10YR 6/3) loamy fine sand; weak medium and coarse subangular blocky structure; very friable, non sticky, non plastic; common fine to coarse roots throughout; common medium tubular pores; strongly acid (pH 5.1); clear wavy boundary.
Bt--61 to 79 cm (24 to 31 in) yellowish brown (10YR 5/6) sandy clay loam; weak coarse prismatic structure parting to moderate medium subangular blocky; friable, slightly sticky, slightly plastic; common fine to coarse roots throughout; common fine and medium tubular pores; few fine worm casts; very few faint yellowish brown (10YR 5/6) patchy clay films (cutans) on faces of peds and in pores, and distinct pale brown (10YR 6/3) discontinuous skeletans (sand or silt) in root channels and/or pores; common fine rounded dark concretions, and common fine rounded ironstone nodules; common fine and medium distinct strong brown (7.5YR 4/6), and common medium and coarse faint brownish yellow (10YR 6/6) lithochromic mottles; very strongly acid (pH 4.6); gradual wavy boundary. (Thickness is 10 to 76 cm [4 to 30 in].)
Btv--79 to 97 cm (31 to 38 in) brownish yellow (10YR 6/6) fine sandy loam; common medium faint light yellowish brown (10YR 6/4) mottles; moderate coarse prismatic structure parting to moderate medium subangular blocky; friable, slightly sticky, slightly plastic; common fine and medium roots between peds; many fine and medium tubular pores; about 5 percent by volume nodular plinthite; very few faint brownish yellow (10YR 6/6) patchy clay films (cutans) on faces of peds and in pores, and very few light brownish gray (10YR 6/2) discontinuous skeletans (sand or silt) in root channels and/or pores; common fine rounded dark concretions, and common fine rounded ironstone nodules; common fine and medium distinct strong brown (7.5YR 4/6) lithochromic mottles; very strongly acid (pH 4.7); clear wavy boundary. (Combined thickness of Btv or Btv/E horizons is 25 to 102 cm [10 to 40 in].)
Btv/E1--97 to 122 cm (38 to 48 in) brownish yellow (10YR 6/6) fine sandy loam; common fine and medium faint yellowish brown (10YR 5/4) mottles; moderate coarse prismatic structure parting to moderate medium subangular blocky; friable, slightly sticky, slightly plastic; common fine and medium roots between peds; many fine and medium tubular pores; about 7 percent by volume nodular plinthite; about 10 to 12 percent by volume of matrix is slightly brittle; very few faint brownish yellow (10YR 6/6) patchy clay films (cutans) on faces of peds and in pores, and few light brownish gray (10YR 6/2) skeletans (sand or silt); common fine and medium rounded dark concretions, and common fine and medium rounded ironstone nodules; common medium and coarse prominent red (2.5YR 4/8) lithochromic mottles; strongly acid (pH 5.2); gradual smooth boundary.
Btv/E2--122 to 150 cm (48 to 59 in) yellowish brown (10YR 5/6) sandy clay loam; moderate coarse prismatic structure parting to moderate medium subangular blocky; friable, slightly sticky, slightly plastic; common fine and medium roots between peds; common fine and medium tubular pores; about 5 percent by volume nodular plinthite; about 12 percent by volume of matrix is slightly brittle; few faint yellowish brown (10YR 5/6) patchy clay films (cutans) on faces of peds and in pores, and few light brownish gray (10YR 6/2) discontinuous skeletans (sand or silt) on vertical faces of peds; many medium prominent red (2.5YR 4/8) lithochromic mottles; very strongly acid (pH 5.0); gradual smooth boundary.
Bt/E--150 to 165 cm (59 to 65 in) yellowish brown (10YR 5/6) sandy clay loam; moderate coarse prismatic structure parting to moderate medium subangular blocky; friable, slightly sticky, slightly plastic; common fine and medium roots between peds; common fine and medium tubular pores; about 2 percent by volume nodular plinthite; about 10 percent by volume of matrix is slightly brittle; few faint yellowish brown (10YR 5/6) patchy clay films (cutans) on faces of peds and in pores, and few distinct light brownish gray (10YR 6/2) skeletans (sand or silt) on vertical faces of peds; many medium prominent red (2.5YR 4/8) lithochromic mottles; very strongly acid (pH 5.0); gradual smooth boundary. (Thickness is 0 to 51 cm [0 to 20 in].)
BtC--165 to 203 cm (65 to 80 in) 55 percent red (10R 4/8), and 45 percent light gray (10YR 7/1) to gray (10YR 6/1) sandy clay loam; weak very coarse prismatic structure parting to weak coarse subangular blocky; firm, moderately sticky, moderately plastic; common fine and medium roots between peds; common fine and medium tubular pores; about 5 to 10 percent by volume of the matrix is slightly brittle; few discontinuous clay films (cutans) on vertical faces of peds; common fine and medium prominent brownish yellow (10YR 6/6) lithochromic mottles; very strongly acid (pH 4.8).
TYPE LOCATION: Smith County, Texas; from the intersection of U.S. Highway 271 and Interstate 20 northeast of Tyler, 0.75 mile east on Interstate 20, exit Farm Road 757, 1.4 miles east on service road to Brooks Lane, 400 feet west on Brooks Lane, 100 feet south in woodland. (Latitude: 32 degrees, 26 minutes, 7.06 seconds N; Longitude: 95 degrees, 5 minutes, 54.89 seconds W. Winona topographic quadrangle; NAD 1927). (Coordinates estimated from location directions and topographic software)
RANGE IN CHARACTERISTICS:
Soil Moisture: An udic soil moisture regime. The soil moisture control section is dry in some or all parts for 75 to 90 days in normal years.
Mean annual soil temperature: 19 to 22 degrees C (66 to 71 degrees F)
Depth to densic materials 152 to more than 203 cm (60 to more than 80 in)
Depth to albic materials: 8 to 25 cm (3 to 10 in)
Depth to albic horizon: 8 to 25 cm (3 to 10 in)
Depth to argillic horizon: 51 to 102 cm (20 to 40 in)
Depth to horizon with 5 to 15 percent plinthite: 76 to 152 cm (30 to 60 in)
Depth to lithochromic mottles: 51 to 102 cm (20 to 40 in)
Thickness of the loamy fine sand epipedon, 51 to 102 cm (20 to 40 in)
Thickness of solum: 150 to more than 200 cm (60 to more than 80 in)
Particle-size control section (weighted average)
Clay content: 20 to 30 percent
Rock fragments: 0 to 5 percent
CEC/clay ratio: 0.24 to 0.40
A or Ap Horizon
Hue: 10YR
Value: 3 to 5
Chroma: 2 or 3
Texture: loamy fine sand
Clay content: 3 to 15 percent
Rock fragments: 0 to 10 percent ironstone
Reaction: very strongly to slightly acid (4.5 to 6.5) unless limed
E Horizon
Hue: 10YR
Value: 5 to 7
Chroma: 3 or 4
Texture: loamy fine sand
Clay content: 3 to 15 percent
Rock fragments: 0 to 10 percent ironstone
Reaction: very strongly to slightly acid (4.5 to 6.5) unless limed
BE Horizon where present
Hue: 10YR
Value: 5 to 7
Chroma: 6 or 6
Texture: loamy fine sand
Clay content: 3 to 15 percent
Rock fragments: 0 to 10 percent ironstone
Reaction: very strongly to slightly acid (4.5 to 6.5) unless limed
Bt Horizon
Hue: 5YR to 10YR
Value: 5 or 6
Chroma: 6 or 8
Texture: sandy clay loam
Clay content: 20 to 34 percent
Clay films: location on faces of peds and in pores, contrast faint to prominent
Lithochromic mottles: amount-none to common, size-fine to coarse, contrast-faint to prominent, boundary-diffuse to clear, location-in matrix, shades-red, gray or brown
Plinthite: 0 to 4 percent, nodular
Rock fragments: 0 to 5 percent ironstone
Reaction: very strongly to moderately acid (4.5 to 6.0)
Btv Horizon
Hue: 2.5YR to 10YR
Value: 4 to 7
Chroma: 1 to 8
Colors: Horizon is often variegated with these colors
Texture: sandy clay loam or fine sandy loam
Clay content: 16 to 34 percent
Clay films: location on faces of peds and in pores, contrast faint to prominent
Lithochromic mottles: amount-none to many, size-fine to coarse, contrast-faint to prominent, boundary-diffuse to clear, location-in matrix, shades-red, gray or brown
Plinthite: 5 to 15 percent nodular
Glossic features: 0 to 4 percent
Rock fragments: 0 to 5 percent ironstone
Brittleness: 0 to 15 percent
Reaction: very strongly to moderately acid (4.5 to 6.0)
Btv/E Horizon
Hue: 10R to 10YR
Value: 4 to 7
Chroma: 1 to 8
Colors: horizon is often variegated with these colors
Texture: sandy clay loam or fine sandy loam
Clay content: 16 to 34 percent
Clay films: location on faces of peds and in pores, contrast faint to prominent
Lithochromic mottles: amount-none to many, size-fine to coarse, contrast-faint to prominent, boundary-diffuse to clear, location-in matrix, shades-red, gray or brown
Plinthite: 5 to 15 percent nodular
Glossic material: 5 to 10 percent
Rock fragments: 0 to 5 percent ironstone
Brittleness: 0 to 15 percent
Reaction: very strongly to moderately (4.5 to 6.0)
Bt/E Horizon
Has same range in characteristics as Btv/E except has 0 to 4 percent plinthite.
B't or BtC Horizon
Has same range in characteristics as Btv/E except has 0 to 4 percent plinthite and less than 5 percent glossic material
BC or C horizon where present
Is typically stratified loamy deposits. Some pedons have stratified sandstone of sandy clay loam or fine sandy loam texture.
COMPETING SERIES: This is the
Doucette series. Similar soils are the
Briley,
Conroe,
Fuquay,
Depcor,
Pocalla,
Rentzel,
Stilson,
Tenaha,
Trep and
Wolfpen series.
Doucette soils: are developed from younger Pleistocene age sediments, receive greater than 30 inches of frost-free rainfall, and have summer moisture deficit of 0 to 10 cm (0 to 4 in).
Briley, Tenaha and Trep soils: have less than 5 percent plinthite.
Conroe soils: have a clayey control section.
Fuquay soils: have a kandic horizon.
Depcor and Wolfpen soils: have base saturations above 35 percent.
Pocalla and Stilson soils: have subactive cation exchange activity class.
Rentzel soils: have aquic conditions and iron depletions in the upper part of the Bt horizon.
GEOGRAPHIC SETTING:
Parent material: sandy and loamy coastal plain sediments derived from Claiborne geologic group
Landscape: coastal plain
Landform: interfluves
Slope: 1 to 8 percent
Mean annual air temperature range: 18 to 21 degrees C (64 to 69 degrees F)
Mean annual precipitation range: 1016 to 1270 mm (40 to 50 in)
Frost-free period: 240 to 275 days
Elevation: 107 to 183 m (350 to 600 ft)
Thornthwaite annual P-E indices: 66 to 80
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Briley (TX),
Darco (TX),
Rentzel (TX),
Bowie (TX) and
Kirvin (TX) series.
Briley soils: lack 5 percent plinthite and are on slightly higher convex interstream divides.
Darco soils: have a sandy epipedon over 100 cm (40 in) thick and are on similar positions.
Rentzel soils: have aquic conditions in the upper Bt horizon and are on lower lying concave slopes.
Bowie soils: lack a thick sandy epipedon and are on similar positions.
Kirvin soils: have a clayey control section and are on convex ridges.
DRAINAGE AND PERMEABILITY: Well drained. Permeability is moderate in the upper part of the B horizon and moderately slow in the lower part. Runoff is very low on slopes less than 5 percent and low on 5 to 8 percent slopes.
USE AND VEGETATION: Used mainly for woodland and pasture. Native vegetation consists of loblolly and shortleaf pine, hickory, sweetgum and red oak.
DISTRIBUTION AND EXTENT: Eastern Texas; Land Resource Region P; MLRA 133B; the series is of large extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Temple, Texas
SERIES ESTABLISHED: Nacogdoches County, Texas, 1976, Nacogdoches county soil survey area, Texas, 1976. The name is from a nearby community.
REMARKS: The series was formerly included in the Fuquay series. The series was separated based on absence of a kandic horizon.
Diagnostic horizons and features recognized in this pedon are:
Particle size control section: 61 to 111 cm (24 to 44 in.) (Bt, Btv, Btv/E1 horizon)
Ochric epipedon: 0 to 61 cm (0 to 24 in). (A and E horizons)
Argillic horizon: 61 to 203 cm (24 to 80 in). (Bt, Btv, Btv/E, Bt/E, and BtC horizons)
Plinthite (5 percent or more): 79 to 147 cm (31 to 58 in). (Btv and Btv/E horizons)
The assignment of the cation-exchange activity class is supported by laboratory data number S86TX-423-005 from Smith County, Texas.
ADDITIONAL DATA: NSSL Data from type location S86TX-423-005. Particle-size analysis were performed at the project office on six pedons. Base saturation analysis were performed at the project office on 69 pedons.
TAXONOMIC VERSION: Keys to Soil Taxonomy, 10th Edition, 2006