LOCATION GUYTON LA+AR MS OK TN TX
Established Series
Rev. JLD-JJD-MJB
08/2018
GUYTON SERIES
The Guyton series consists of very deep, poorly drained and very poorly drained, slowly permeable soils that formed in thick loamy sediments. These soils are on Coastal Plain local stream flood plains and in depressional areas on late Pleistocene age terraces. Slopes range from 0 to 1 percent. Mean annual precipitation is about 1397 mm (55 in) and the mean annual air temperature is about 17.2 degrees C (63 degrees F)
TAXONOMIC CLASS: Fine-silty, siliceous, active, thermic Typic Glossaqualfs
TYPICAL PEDON: Guyton silt loam on a local stream alluvial plain. Less than 0.5 percent slope in hardwood woodland, at an elevation of 39.6 m (130 ft). (Colors are for moist soil unless otherwise stated.)
A--0 to 15 cm (0 to 6 in); grayish brown (10YR 5/2) silt loam; weak medium subangular blocky structure; friable; common medium distinct dark yellowish brown (10YR 4/4) masses of oxidized iron with clear boundaries; strongly acid; clear smooth boundary. (Thickness of the A horizon is 8 to 21 cm [3 to 8 in])
Eg1--15 to 28 cm (6 to 11 in); light brownish gray (10YR 6/2) silt loam; weak medium subangular blocky structure; friable; common medium distinct dark yellowish brown (10YR 4/4) masses of oxidized iron with clear boundaries; few fine soft brown bodies; strongly acid; clear wavy boundary.
Eg2--28 to 58 cm (11 to 23 in); light brownish gray (2.5Y 6/2) silt loam; weak medium subangular blocky structure; compact and brittle; many fine pores which have dark gray (10YR 4/1) stains; common medium distinct dark yellowish brown (10YR 3/4) and brown (10YR 4/3) masses of oxidized iron with clear boundaries in matrix; 10 percent streaks of albic material about 8 cm (3 in) wide extend to a depth of 89 cm (35 in); very strongly acid; clear irregular boundary. (Combined thickness of Eg horizons is 28 to 69 cm [11 to 27 in])
Btg/E--58 to 89 cm (23 to 35 in); gray (10YR 5/1) silty clay loam; weak coarse blocky structure; friable; few distinct clay films on faces of peds and in pores; common medium prominent strong brown (7.5YR 5/6) slightly brittle masses of oxidized iron with clear boundaries in the matrix; 15 percent (E part) interfingering of albic material of light brownish gray (10YR 6/2) silt loam; very strongly acid; clear wavy boundary. (thickness of the Btg/E horizon is 15 to 61 cm [6 to 24 in])
Btg1--89 to 117 cm (35 to 46 in); grayish brown (10YR 5/2) silt loam; weak coarse and medium subangular blocky structure; slightly compact; friable; few distinct clay films on faces of peds; common medium prominent strong brown (7.5YR 5/6) masses of oxidized iron with clear boundaries in matrix; very strongly acid; clear smooth boundary.
Btg2--117 to 178 cm (46 to 70 in); gray (10YR 6/1) clay loam surrounding pockets of brittle strong brown (7.5YR 5/6) clay loam; weak coarse subangular blocky structure; firm; few faint clay films on horizontal faces of peds and few to many distinct clay films on vertical faces of peds; few fine brown (10YR 4/3) iron and manganese concretions; few pockets of clay loam and sandy clay which tend to be vertically oriented; very strongly acid; abrupt smooth boundary. (Combined thickness of the Btg horizons is 38 to 124 cm [15 to 49 in])
Cg--178 to 203 cm (70 to 80 in); light olive gray (5Y 6/2) sandy clay loam; common medium prominent strong brown (7.5YR 5/6) masses of oxidized iron with clear boundaries in matrix; massive; firm; hard and compact; very strongly acid.
TYPE LOCATION: Ouachita Parish, Louisiana; about 16 miles southwest of West Monroe, one mile north of Louisiana Highway 35 junction with Louisiana Highway 146. SE1/4NW1/4 sec. 28, T. 17 N., R. 1 E., 2,540 feet south and 2,590 feet east of northwest section corner, 72 feet east of pipeline.
USGS Topographic Quadrangle: Cadeville, OA
Latitude: 32 degrees, 25 minutes, 48.716 seconds N
Longitude: 92 degrees, 22 minutes, 20.612 seconds W
Decimal Degrees:
Latitude: 32.43019889 degrees
Longitude: -92.37239222 degrees
Datum: WGS84
UTM Easting: 559002.95 m
UTM Northing: 3588294.99 m
UTM Zone: 15N
RANGE IN CHARACTERISTICS:
Solum thickness: 127 to 203 cm (50 to about 80 in)
Depth to redox concentrations: 0 to 203 cm (0 to 80 in)
Depth to argillic: 10 to 91cm (4 to 36 in)
Exchangeable sodium: ranges from less than 5 percent to 40 percent in the lower part of the solum
Particle-size control section (weighted average):
Clay content: 18 to 40 percent
Sand content: 10 to 40 percent, dominantly very fine sand
A or Ap horizon:
Hue: 10YR or 2.5Y
Value: 3 to 6
Chroma: 2 or 3
Other features: horizons with value of less than 3, are less than 15 cm (6 in) thick
Texture: very fine sandy loam, loam, or silt loam
Redox concentrations: amount-0 to 19 percent; size-fine or medium; contrast-faint or distinct; color-shades of brown; boundary-sharp; location-throughout matrix;
Reaction: extremely acid to moderately acid
Eg horizon:
Hue: 10YR or 2.5Y
Value: 5 to 8
Chroma: 1 or 2
Texture: very fine sandy loam, loam, or silt loam
Redox concentrations: amount-0 to 20 percent; size-fine or medium; contrast-faint or distinct; color-shades of brown; boundary-sharp; location-throughout matrix
Other features: the lower boundary of the Eg horizon is clear irregular or abrupt irregular; and streaks of albic material (E) extend into the Btg/ E horizon
Reaction: extremely acid to moderately acid
E/B horizon (where present is 15 to 38 cm [6 to 15 in]):
Hue: 10YR or 2.5Y
Value: 5 to 8
Chroma: 1 or 2
Texture: very fine sandy loam, loam, or silt loam
Redox concentrations: amount-0 to 20 percent; size-fine or medium; contrast-faint or distinct; color-shades of brown; boundary-sharp; location-throughout matrix
Reaction: extremely acid to moderately acid
E/Bg or Bg/E horizon (where present):
B part
Hue: 10YR or 2.5Y
Value: 5 or 6
Chroma: 1 or 2
Texture: silt loam, loam, or silty clay loam
E part:
Hue: 10YR or 2.5Y
Value: 5 or 6
Chroma: 1 or 2
Texture: silt loam or loam
Albic materials: streaks
Redox concentrations: amount-0 to 20 percent; size-fine or medium; contrast-faint or distinct; color-shades of yellow or brown; boundary-sharp; location-throughout matrix
Reaction: extremely acid to moderately acid
Btg/E horizon:
Btg part
Hue: 10YR or 2.5Y
Value: 5 or 6
Chroma: 1 or 2
Texture: silt loam, loam, silty clay loam, or clay loam
E part:
Hue: 10YR or 2.5Y
Value: 5 or 6
Chroma: 1 or 2
Texture: silt loam or loam
Albic materials: amount: 15 to 30 percent; color-shades of gray; size: 5 to 25 mm
Redox concentrations: amount-0 to 20 percent; size-fine or medium; contrast-faint to prominent; color-shades of yellow or brown; boundary-clear to sharp; location- throughout matrix
Reaction: extremely acid to moderately acid
Btg horizon
Hue: 10YR or 2.5Y
Value: 5 or 6
Chroma: 1 or 2
Texture: silt loam, silty clay loam, clay loam, or sandy clay loam
Clay films: location-horizontal and vertical ped faces; distinctness-faint or distinct
Redox concentrations: amount-0 to 20 percent; size-fine or medium; contrast-faint to prominent; color-shades of red, yellow, or brown; boundary-sharp; location- throughout matrix
Iron-manganese concentrations: amount-0 to 15 percent; size-fine or medium
Reaction: extremely acid to moderately alkaline
BCg horizon (where present):
Hue: 10YR or 2.5Y
Value: 5 or 6
Chroma: 1 or 2
Texture: silt loam, silty clay loam, clay loam, or sandy clay loam
Redox concentrations: amount-0 to 20 percent; size-fine or medium; contrast-faint or distinct; color-shades of red, yellow, or brown; boundary-sharp; location- throughout matrix
Iron-manganese concentrations: amount-0 to 15 percent; size-fine or medium
Reaction: extremely acid to moderately acid
Cg layer:
Hue: 10YR to 5Y
Value: 5 or 6
Chroma: 1 or 2
Texture: silt loam, silty clay loam, clay loam, or sandy clay loam
Redox concentrations: amount-0 to 20 percent; size-fine or medium; contrast-faint to prominent; color-shades of red, yellow, or brown; boundary-sharp; location- throughout matrix
Iron-manganese concentrations: amount-0 to 15 percent; size-fine or medium
Effervescence: none to very slight
Reaction: very strongly acid to moderately alkaline
COMPETING SERIES: These are the
Alikchi (OK),
Caddo (LA),
Caneyhead (TX),
Evadale (TX),
Kinder (LA),
Prairieland (LA) series in the same family and the
Amy (AR),
Basile (LA),
Bonn (LA),
Calhoun (LA),
Foley (AR),
Fountain (LA),
Frost (LA),
Henry (TN),
Mashulaville (MS),
Myatt (AL), and
Zachary (LA) series.
Alikchi soils: have bedrock within 100 cm (40 in) of the surface
Amy,
Henry,
Mashulaville,
Myatt, and
Zachary soils: do not have an E horizon that streaks into the Bt horizon; in addition, Henry and Mashulaville soils have a fragipan, Henry soils contain less than 10 percent sand.
Basile soils: have mixed mineralogy and subhorizons that contain carbonate concretions
Bonn and
Foley soils: have natric horizons and are neutral to alkaline in the Bt horizon
Caddo soils: have prominent red mottles and a few plinthite nodules in the Bt horizons
Calhoun and
Fountain soils: have less than 15 percent sand and have calcium to magnesium ratios greater than 1
Caneyhead soils: very poorly drained; glossic horizon that extends throughout the soil profile; do not have a Cg layer
Evadale soils: have an Eg/Btg horizon; do not have a Cg layer
Frost soils: have prominent dark gray to black clay films in the Bt horizon and have mixed mineralogy
Kinder soils: have prominent red mottles in the Bt horizon
Prairieland soils: do hot have a Cg layer
GEOGRAPHIC SETTING:
Parent Material: Pleistocene age loamy sediments from unspecified sedimentary rock
Landscape: coastal plains
Landform: flood plains and stream terraces
Slope: 0 to 1 percent
Mean annual precipitation: 1067 to 1750 mm (42 to 68.9 in)
Mean annual air temperature: 11.0 to 24.0 degrees C (52 to 76 degrees F)
Mean annual soil temperature: 16.7 to 20.6 degrees C
Frost free period: 190 to 301 days
Elevation: 6.0 to 130 m (20 to 430 ft)
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Caddo (LA),
Frizzell (LA),
Iulus (TX),
Lucy (AL),
Ora (MS),
Providence (MS),
Rosebloom (MS),
Ruston (LA),
Savannah (MS), and
Wrightsville (AR) series.
Caddo soils: are on slightly higher positions
Frizzell soils: are in similar to slightly higher positions on the landscape, have more than 15 percent sand coarser than very fine sand and chroma of 3 or more
Iulus soils: are in similar positions and have less than 18 percent clay in the control section
Lucy,
Ora,
Providence,
Rosebloom,
Ruston, and
Savannah soils: are in higher positions and do not have an E horizon that streaks into the Bt horizon
Rosebloom soils: do not have an argillic horizon and are in similar positions
Wrightsville soils: are in similar terrace positions and have a fine-textured argillic horizon
DRAINAGE AND PERMEABILITY:
Drainage: poorly drained, where ponded it is very poorly drained
Permeability: slow
Runoff: high on 0 to 1 percent slopes; negligible in depressional areas
Seasonal high water table: 0 to 46 cm (0 to 1.5 feet) below the surface from December through May, except where ponded. Where ponded, it is from 1 foot above the surface to 0.5 foot below the surface most of the time.
Flooding frequency: rare, occasional, or frequent flooding
USE AND VEGETATION: Most areas are in woodland. Water oak, baldcypress, water tupelo, loblolly pine, and shortleaf pine are dominant in the drainageways. On broad terraces, baldcypress and water tupelo generally are absent and sweetgum dominates. Some areas are used as pastureland or cropland.
DISTRIBUTION AND EXTENT: Arkansas, Louisiana, Mississippi, Oklahoma, and Texas; LRR P and T; MLRA 133B and 152B. The series is extensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Temple, Texas
SERIES ESTABLISHED: Ouachita Parish, Louisiana; 1969.
REMARKS:
Diagnostic horizons and other features recognized are:
Ochric epipedon: 0 to 58 cm (0 to 23 in) (A, Eg horizons)
Albic horizon: 15 to 58 cm (6 to 23 in) (Eg1, Eg2 horizons)
Argillic horizon: 58 to 178 cm (23 to 70 in) (Btg/E, Btg1, Btg2 horizons)
Redoximorphic concentrations: 0 to 203 cm (0 to 80 in) (A, Eg1, Eg2, Btg/E, Btg, Cg horizons)
Albic materials (E part) into the Btg horizon: 58 to 89 cm (23 to 35 in) (Btg/E horizon)
Aquic conditions: 15 to 89 cm (6 to 35 in) (Eg1, Eg2, Btg/E horizons)
Edited 01/2017 (JAD-MJB) Changed to tabular format. Updated pedon description, range in characteristics, and other sections.
ADDITIONAL DATA: NSSL Sample Nos. S68LA-073-004 & S87LA-085-004
Taxonomic Version: Keys to Soil Taxonomy, Twelfth Edition, 2014
National Cooperative Soil Survey
U.S.A.