LOCATION ESTES TXEstablished Series
TAXONOMIC CLASS: Fine, smectitic, thermic Aeric Dystraquerts
TYPICAL PEDON: Estes clay, in floodplain, elevation is 64 m (210 ft) (Elevation estimated from topographic software, following location directions below). (Colors are for moist soil unless otherwise stated.)
A--0 to 10 cm (0 to 4 in); brown (10YR 4/3) clay; moderate fine and medium subangular blocky structure; very hard, firm; many fine, medium and coarse roots; extremely acid; clear wavy boundary.? (Thickness is 8 to 23 cm [3 to 9 in].)
Bw--10 to 30 cm (in); pale brown (10YR 6/3) clay; moderate fine and medium subangular blocky structure; very hard, firm; common fine and medium roots; few fine and medium pores; few pressure surfaces; many fine and medium prominent yellowish red (5YR 5/6) masses of iron accumulation; extremely acid; clear smooth boundary. (Thickness is 0 to 38 cm [0 to 15 in].)
Bg--30 to 97 cm (in); light brownish gray (10YR 6/2) clay; weak medium and coarse subangular blocky structure; very hard, very firm; few fine and medium roots; few fine pores; few pressure surfaces and slickensides; few lenses of light gray sand on vertical surfaces of peds; common fine and medium prominent yellowish red (5YR 5/8) masses of iron accumulation; extremely acid; gradual smooth boundary. (Thickness is 20 to 89 cm [8 to 35 in].)
Bssg--97 to 165 cm (in); light brownish gray (10YR 6/2) clay; weak coarse angular blocky structure; very hard, very firm; few fine roots; common fine pores; few pressure surfaces and common prominent slickensides; many medium distinct strong brown (7.5YR 5/8) and yellowish brown (10YR 5/8) and common coarse prominent red (2.5YR 4/6) masses of iron accumulation; extremely acid; gradual smooth boundary. (Thickness is 51 to 102 cm [20 to 60 in].)
BCg--165 to 203 cm (in); light brownish gray (10YR 6/2) clay loam; weak coarse subangular blocky structure; very hard, firm; few fine roots; few pressure surfaces; common medium distinct brownish yellow (10YR 6/6) and many coarse prominent red (2.5YR 4/6) masses of iron accumulation; extremely acid.
TYPE LOCATION: Harrison County, Texas; from U.S. Highway 80 in Marshall, 15.7 miles south on U.S. Highway 59; 100 feet east of fence in woodland (Site is also 0.4 mile north of Sabine River bridge). (Latitude: 32 degrees, 20 minutes, 6.18 seconds N; Longitude: 94 degrees, 21 minutes, 9.55 seconds W. (Coordinates estimated from location directions and topographic software) Grand Bluff, TX TOPOGRAPHIC QUADRANGLE; NAD 83).
RANGE IN CHARACTERISTICS:
Soil Moisture: An udic soil moisture regime. The soil moisture control section is moist in some or all parts for more than 210 days in normal years.
Mean annual soil temperature: 19 to 21 degrees C (66 to 70 degrees F)
Depth to cambic horizon: 8 to 23 cm (3 to 9 in), where present
Depth to redox concentrations: 8 to 23 cm (3 to 9 in)
Depth to episaturation: 0 to 46 cm (0 to 18 in)
Vertic features: 46 to 200 cm (18 to 80 in)
Particle-size control section (weighted average):
Clay content: 40 to 50 percent
A Horizon
Hue: 10YR
Value: 3 to 5
Chroma: 2 or 3
Texture: clay, clay loam, or silty clay loam
Clay content: 28 to 59 percent
Redox concentrations: none to common, shades of brown
Redox depletions: none to common, shades of gray
Iron-manganese concentrations: none to common, soft masses
EC (dS/m): ranges from 0 to 4, typically less than 1
SAR: 1 to 5
Reaction: extremely acid to moderately acid (3.6 to 6.0)
Bw Horizon (where present)
Hue: 10YR
Value: 4 to 6
Chroma: 3 or 4
Texture: clay or silty clay
Clay content: 40 to 60 percent
Redox concentrations: few to many, shades of brown
Redox depletions: few to many, shades of gray
Iron-manganese concentrations: none to common, soft masses
EC (dS/m): ranges from 0 to 4, typically less than 1
SAR: 1 to 5
Reaction: extremely acid to strongly acid (3.6 to 5.5)
Bg Horizon
Hue: 10YR
Value: 4 to 6
Chroma: 1 or 2
Texture: clay or silty clay
Clay content: 40 to 60 percent
Redox concentrations: few to many, shades of brown, red and yellow
Redox depletions: few to many, shades of gray
Iron-manganese concentrations: none to many, soft masses
EC (dS/m): ranges from 0 to 4, typically less than 1
SAR: 1 to 5
Reaction: extremely acid to strongly acid (3.6 to 5.5)
Bssg Horizon
Hue: 10YR or 2.5Y
Value: 4 to 7
Chroma: 1 or 2
Texture: clay or silty clay
Clay content: 40 to 60 percent
Redox concentrations: few to many, shades of brown, red and yellow
Redox depletions: few to many, shades of gray
Iron-manganese concentrations: none to many, soft masses
EC (dS/m): ranges from 0 to 4, typically less than 1
SAR: 1 to 5
Reaction: extremely acid or very strongly acid (3.6 to 5.0)
BCg Horizon (where present)
Hue: 10YR or 2.5Y
Value: 6 or 7
Chroma: 1 or 2
Texture: sandy clay loam, silty clay loam or clay loam
Clay content: 25 to 39 percent
Redox concentrations: few to many, shades of brown, red and yellow
EC (dS/m): ranges from 0 to 4, typically less than 1
SAR: 1 to 5
Reaction: extremely acid to moderately acid (3.6 to 6.0)
COMPETING SERIES: This is the
Ozias series. Similar soils are the
Gladewater,
Kobel,
Leeper,
Litro,
Overton,
Tamba,
Tuscumbia,
Una and
Urbo series.
Ozias soils: have electrical conductivity of more than 4 dS/m within a depth of 102 cm (40 inches)
Gladewater soils: have a pH value of more than 5.0 throughout the upper 20 inches
Kobel soils: are members of a Vertic subgroup
Leeper soils: are members of a Vertic subgroup
Litro soils: have mixed mineralogy
Overton soils: are calcareous
Tamba soils: have mixed mineralogy
Tuscumbia soils: are members of a Vertic subgroup
Una soils: have mixed mineralogy
Urbo soils: have mixed mineralogy
GEOGRAPHIC SETTING:
Parent material: clayey and loamy alluvium derived from the Coastal Plains
Landscape: Coastal Plain
Landform: floodplain
Slope: 0 to 1 percent
Mean annual air temperature range: 18 to 20 degrees C (64 to 68 degrees F)
Mean annual precipitation range: 1145 to 1400 mm (45 to 55 in)
Frost-free period: 235 to 250 days
Elevation: 61 to 137 m (200 to 450 ft)
Thornthwaite annual P-E indices: exceeds 64
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Alaga(TX),
Bienville(TX),
Bleakwood(TX),
Bruno(TX),
Hainesville(TX)
Iulus(TX,
Laneville(TX),
Mantachie(TX),
Mathiston(TX),
Mooreville(TX),
Sardis(TX) and
Thenas(TX) series.
Alaga soils: are sandy soils on stream terraces
Bienville soils: are sandy soils on stream terraces
Bleakwood soils: have a fine-loamy particle size control section
Bruno soils: are sandy and are located on point bars and natural levees along major streams
Hainesville soils: are sandy soils on stream terraces
Iulus soils: are coarse-loamy soils on slightly higher positions
Laneville soils: are fine-loamy soils in lateral flood plains
Mantachie soils: are fine-loamy soils in lateral flood plains
Mathiston soils: are fine-silty soils in lateral flood plains
Mooreville soils: are fine-loamy soils in lateral flood plains
Sardis soils: are coarse-loamy soils on slightly higher positions
Thenas soils: are coarse-loamy soils on slightly higher positions
DRAINAGE AND PERMEABILITY: somewhat poorly drained. Runoff is high. Commonly flooded for 2 to 60 days per year. Flooding occurs mainly from November to May and ranges from a few up to about 900 mm (a few up to about 36 inches) in depth.
USE AND VEGETATION: Used primarily for woodland and/or wildlife. A few areas are used for improved pastures of bahiagrass, fescue or dallisgrass. Native vegetation consists of a mixed hardwood forest. The major commercial trees are water oak, willow oak and sweetgum. Other vegetation includes a few scattered green ash, elm, hackberry, mulberry, hickory, pecan and widely scattered native pine with an understory of grasses and shrubs.
DISTRIBUTION AND EXTENT: Eastern Texas and western Louisiana,; Land Resource Region (P); MLRA 133B and some MLRA 150; the series is of large extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Temple, Texas
SERIES ESTABLISHED: Harrison County, Texas, 1984, Harrison County soil survey area, Texas, 1989.
REMARKS: The soil was formerly included with the Urbo series.
DIAGNOSTIC HORIZONS AND FEATURES recognized in this pedon are:
Particle size control section: 25 to 100 cm (10 to 40 in). (Bw, Bg and Bssg horizons)
Ochric epipedon: 0 to 10 cm (0 to 4 in) (A horizon)
Aeric feature: 10 to 30 cm (4 to 12 in) (Bw horizon)
Aquic conditions: 30 to 203 cm (12 to 80 in) (Bg, Bssg and BCg horizons)
Redoximorphic concentrations: 10 to 203 cm (4 to 80 in). (Bw, Bg, Bssg and BCg horizons)
Vertic features: The presence of slickensides at 97 to 165 cm (38 to 65 in). (Bssg horizon)
Episaturation: The zone of saturation at 30 to 203 cm (12 to 80 in). (Bg, Bssg and BCg horizons)
Aquic conditions: 30 to 203 cm (12 to 80 in)
ADDITIONAL DATA: NSSL data from 5 pedons:
Gregg Co 81TX183001; Harrison Co 82TX203001; Newton Co 82TX351001; Panola Co 82TX365001; Titus Co 81TX449001
SOIL INTERPRETATION RECORD NUMBER: TX1063 and TX1265
TAXONOMIC VERSION: Keys to Soil Taxonomy, Tenth Edition, 2006