LOCATION ALLANTON FL+GA
Established Series
EMD-TEC/Rev. JAK
03/2019
ALLANTON SERIES
The Allanton series consists of very deep, poorly drained and very poorly drained soils that formed in sandy marine deposits. These soils occur on broad flats, slight depressions, and along poorly defined drainageways on the Lower Coastal Plain. Slopes range from 0 to 2 percent.
TAXONOMIC CLASS: Sandy, siliceous, thermic Arenic Umbric Alaquods
TYPICAL PEDON: Allanton sand on a nearly level, 0.5 percent slope in cut-over woodlands. (Colors are for moist soil.)
A1--0 to 10 inches; black (10YR 2/1) sand; weak fine granular structure; very friable; many fine and medium roots; many uncoated sand grains; very strongly acid; clear smooth boundary. (10 to 22 inches thick)
A2--10 to 18 inches; very dark gray (10YR 3/1) sand; single grain; loose; common uncoated sand grains; common fine and medium roots; very strongly acid; clear wavy boundary. (6 to 12 inches thick)
E1--18 to 27 inches; dark gray (10YR 4/1) sand with streaks and splotches of gray (10YR 5/1); single grain; loose; few medium roots; common uncoated sand grains; very strongly acid; gradual wavy boundary. (6 to 12 inches thick)
E2--27 to 52 inches; light gray (10YR 7/1) sand; single grain; loose; few fine roots; very strongly acid; clear smooth boundary. (5 to 33 inches thick)
Bh1--52 to 56 inches; very dark gray (10YR 3/1) sand; single grain; loose; about 50 percent of sand grains coated with organic matter; very strongly acid; clear wavy boundary. (0 to 10 inches thick)
Bh2--56 to 80 inches; black (N 2/0) sand; massive, crushing to weak fine granular structure; very friable; sand grains coated with organic matter; extremely acid.
TYPE LOCATION: Bay County, Florida. Cut-over woodlands in the flatwoods about 2.8 miles west of Fountain, Florida, west of U.S. Highway 231; NW1/4SW1/4,Sec. 20, T. 1. N., R. 12 W.; lat. 30 degrees 28 minutes 22.39 seconds N. long. 85 degrees 27 minutes 59.1 seconds W., NAD83.
RANGE IN CHARACTERISTICS: Solum thickness exceeds 80 inches. Reaction is extremely acid to strongly acid throughout the profile. Depth to the spodic horizon is 50 to 80 inches. Thickness of the umbric epipedon is 16 to 30 inches.
The A horizon has hue of 10YR or 2.5Y, value of 2 or 3, and chroma of 2 or less or it is neutral. Texture is sand, fine sand, loamy sand, or loamy fine sand. Some pedons have mucky texture modifiers.
The E or Eg horizon has hue of 10YR or 2.5Y, value of 4 to 7 and chroma of 2 or less or it is neutral. Texture is sand or fine sand. Redoximorphic features, where present, consists of masses of oxidized iron in shades of red, brown, or yellow and iron depletions in shades of white, gray or olive.
The upper Bh horizon has hue of 7.5YR or 10YR, value of 2 to 5, and chroma of 2 or less. Texture is sand, fine sand, loamy sand, or loamy fine sand. Redoximorphic features, where present, consists of masses of oxidized iron in shades of red, brown, or yellow and iron depletions in shades of white, gray or olive.
The lower Bh horizon has hue of 5YR to l0YR, value of 2 or 3, and chroma 2 or less or it is neutral. Texture is sand, fine sand, loamy sand, or loamy fine sand. Most sand grains are coated with organic matter. Redoximorphic features, where present, consists of masses of oxidized iron in shades of red, brown, or yellow and iron depletions in shades of white, gray or olive.
COMPETING SERIES: This is the
Pottsburg series in the same family and
Centenary,
Hurricane,
Leon, and
Mandarin series in similar families. None of these soils have an umbric epipedon. In addition, Centenary and Hurricane soils are better drained. Leon and Mandarin soils have a spodic horizon that occurs within 30 inches of the surface.
GEOGRAPHIC SETTING: Allanton soils are on broad flats, slight depressional areas, and along poorly defined drainageways of the flatwoods of the lower Coastal Plain in northwest Florida. Slopes are 0 to 2 percent. Annual precipitation is about 50 to 60 inches and mean annual temperature is about 65 to 70 degrees F.
GEOGRAPHICALLY ASSOCIATED SOILS: These are
Chipley,
Dorovan,
Foxworth,
Osier,
Pamlico,
Pickney,
Plummer, and
Rutlege series. None of these associated soils have spodic horizons within 80 inches of the surface. Chipley and Foxworth soils are on upland and side slopes and are better drained. Dorovan and Pamlico soils have organic surfaces. Osier soils have an ochric or albic surface horizon. Pickney soils have an umbric epipedon more than 24 inches thick. Plummer soils have an argillic horizon at depths of 40 to 60 inches.
DRAINAGE AND PERMEABILITY: Allanton soils are poorly or very poorly drained. Runoff is very slow. Permeability is moderately rapid throughout but is impeded by a high water table. A water table is within 6 inches of the surface for 3 to 5 months during most years. It is at or on the surface for periods of 1 to 3 months in some years. It is within depths of 24 inches for 6 to 9 months in most years. In the lower lying areas water may stand for 2 to 4 months in most years.
USE AND VEGETATION: Most of the areas of these soils remain in native vegetation or cut over areas of woodland. Natural vegetation consists of sweet bay, blackgum, sweetgum, red maple and some slash pine. The understory consists of buckwheattree (titi), waxmyrtle, hammock sweet azalea, gallberry, and similar species and pineland threeawn. A few areas are drained, cleared, and in tame pastures.
DISTRIBUTION AND EXTENT: Lower Coastal Plain flatwoods in northwest Florida. The series is of moderate extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Auburn, Alabama
SERIES ESTABLISHED: Bay County, Florida; 1982.
REMARKS: This revision changes the series classification to recognize the 1992 amendments to Soil Taxonomy that introduces changes in classification of Spodosols.
09/2008. The OSD was reclassified from Grossarenic Alaquods to Arenic Umbric Alaquods. These soils have both the Grossarenic and Umbric soil features; however, classify as Arenic Umbric Alaquods by virtue of the order of the Alaquod subgroups in the 10th edition of the Keys to Soil Taxonomy. These soils would classify as Grossarenic Umbric Alaquods if such existed in the Soil Taxonomy.
Diagnostic horizons and features recognized in this pedon are:
Umbric epipedon-zone from the surface to a depth of 18 inches (A1, A2).
Albic horizon-zone from 18 to 52 inches (E1, E2).
Spodic horizon-zone from 52 to 80 inches (Bh).
Aquic condition-endosaturation throughout soil.
ADDITIONAL DATA: Soil Characterization Lab., IFAS, UOF
S3-14-(1-8), S4-5-(1-7)
TABULAR SERIES DATA:
SOI-5 Soil Name Slope Airtemp FrFr/Seas Precip Elevation
FL0295 ALLANTON 0- 2 65- 70 230-310 50- 60 20- 150
FL0397 ALLANTON 0- 2 65- 70 230-310 50- 60 20- 150
FL0489 ALLANTON 0- 2 65- 70 230-310 50- 60 20- 150
SOI-5 FloodL FloodH Watertable Kind Months Bedrock Hardness
FL0295 NONE 0-0.5 APPARENT FEB-SEP 60-60
FL0397 COMMON 0-0.5 APPARENT DEC-MAY 60-60
FL0489 NONE - APPARENT - 60-60
SOI-5 Depth Texture 3-Inch No-10 Clay% -CEC-
FL0295 0-18 LS LFS 0- 0 100-100 8-12 10- 25
FL0295 0-18 S FS 0- 0 100-100 3- 8 4- 8
FL0295 18-56 S FS LS 0- 0 100-100 3-12 1- 8
FL0295 56-80 S FS LS 0- 0 100-100 3-12 10- 30
FL0397 0-18 S FS 0- 0 100-100 3- 8 4- 8
FL0397 0-18 LS LFS 0- 0 100-100 8-12 10- 25
FL0397 18-52 S FS LS 0- 0 100-100 3-12 1- 8
FL0397 52-80 S FS LS 0- 0 100-100 3-12 10- 30
FL0489 0-18 MK-S MK-FS MK-LFS 0- 0 100-100 3-12 15- 30
FL0489 18-56 S FS 0- 0 100-100 1- 8 1- 8
FL0489 56-80 S FS LS 0- 0 100-100 3-12 10- 30
SOI-5 Depth -pH- O.M. Salin Permeab Shnk-Swll
FL0295 0-18 3.5- 5.5 2.-7. 0- 2 2.0- 6.0 LOW
FL0295 0-18 3.5- 5.5 2.-5. 0- 2 2.0- 6.0 LOW
FL0295 18-56 3.5- 5.5 0.-.5 0- 2 6.0- 20 LOW
FL0295 56-80 3.5- 5.5 2.-4. 0- 2 0.6- 6.0 LOW
FL0397 0-18 3.5- 5.5 2.-5. 0- 0 2.0- 6.0 LOW
FL0397 0-18 3.5- 5.5 2.-7. 0- 2 2.0- 6.0 LOW
FL0397 18-52 3.5- 5.5 0.-.5 0- 0 6.0- 20 LOW
FL0397 52-80 3.5- 5.5 2.-4. 0- 0 0.6- 6.0 LOW
FL0489 0-18 3.5- 5.5 10-20 0- 2 2.0- 6.0 LOW
FL0489 18-56 3.5- 5.5 0.-1. 0- 2 2.0- 6.0 LOW
FL0489 56-80 3.5- 5.5 2.-4. 0- 2 0.6- 6.0 LOW
National Cooperative Soil Survey
U.S.A.