LOCATION WESTON AR+AL NC VAEstablished Series
TAXONOMIC CLASS: Coarse-loamy, siliceous, active, thermic Typic Endoaquults
TYPICAL PEDON: Weston fine sandy loam - forested.
(Colors are for moist soil unless otherwise
stated.)
01-- 1-0 inches, pine needles, leaves, and twigs.
A1-- 0-4 inches, grayish brown (10YR 5/2) fine sandy
loam; weak fine granular structure; very friable; many fine and
medium roots; few fine soft dark bodies; medium acid; clear smooth
boundary. (3 to 6 inches thick)
A2-- 4-9 inches, light brownish gray (10YR 6/2) fine
sandy loam, few fine faint brownish yellow (10YR 6/8) mottles;
weak medium subangular blocky structure; friable; many fine and
medium roots; few fine pores; few fine dark concretions; strongly
acid; gradual smooth boundary. (3 to 7 inches thick)
B2tg-- 9-24 inches, gray (10YR 6/1) sandy loam, common fine
and medium distinct brownish yellow (10YR 6/8) mottles; weak
medium subangular blocky structure; friable, nonplastic; common
fine and medium roots; many fine pores; sand grains coated and
bridged with clay; few fine dark concretions; very strongly acid;
gradual wavy boundary. (12 to 24 inches thick)
B3g-- 24-44 inches, mottled light gray (10YR 7/1),
yellowish brown (10YR 5/6), and brownish yellow (10YR 6/6) fine
sandy loam; weak medium subangular blocky structure; friable; few
roots; many fine pores; few fine dark concretions; very strongly
acid; gradual smooth boundary. (16 to 24 inches thick)
Cg-- 44-54 inches, mottled gray (10YR 6/1) and yellowish
brown (10YR 5/8) stratified layers of sand, silt, and clay;
massive; firm; very strongly acid.
TYPE LOCATION: Cleveland County, Arkansas; 4 miles south of
Dallas County line on highway 167, then east 1 1/2 miles on dirt
road to Croak school, then north 1.1 miles, 75 feet west of road;
NW1/4NE1/4NE1/4sec. 25, T. 8 S., R. 13 W.
RANGE IN CHARACTERISTICS: Thickness of solum ranges from about 36
to 56 inches thick.
The A horizon is fine sandy loam, sandy loam, or loamy fine sand.
The A1 or Ap horizon is light brownish gray (10YR 6/2), grayish
brown (10YR 5/2), dark grayish brown (10YR 4/2), or very dark gray
(10YR 3/1). The A2 horizon is light brownish gray (10YR 6/2) or
pale brown (10YR 6/3); some pedons have values of 5 or chromas of
1, and mottles of brownish yellow (10YR 6/8) or yellowish brown
(10YR 5/8).
The B2tg horizon is gray (10YR 5/1, 6/1) or light gray 10YR 7/1)
mottled with shades of yellow and brown; textures include sandy
loam or loam. Clay content of the B2tg horizon ranges from 5 to
18 percent, silt content is 20 to 50 percent, and the horizon
contains more than 15 percent of material coarser than very fine
sand. Reaction of the B horizons ranges from very strongly acid
to extremely acid.
Average texture of the stratified C horizon ranges from sandy loam
to loam.
Competing Series: These are the Caddo,
Leaf, Myatt, Rains, and Smithton series. All except Smithton
soils are finer textured and contain more than 18 percent clay in
the B horizons. Smithton soils have sola thicker than 60 inches.
GEOGRAPHIC SETTING: The Weston soils occur on nearly level to gently rolling uplands, coastal flatwoods, and stream terraces. Some of the
stream terraces have undulating relief consisting of a succession
of shallow depressions and low ridges. Slope gradient seldom
exceeds 3 percent. The soil formed in coarse to moderately fine
textured, stratified marine and fluvatile deposits.
GEOGRAPHICALLY ASSOCIATED SOILS: These include the competing Caddo and Myatt series. Also associated are the Pheba and Stough soils,
both of which have fragipans.
Drainage and Permeability: Poorly drained; very slow runoff;
moderately slow permeability. Many depressions as well as level
areas are ponded for several days during wet season.
USE AND VEGETATION: Most of the soil is in forests of gum,
cypress, southern yellow pines, maple, and water oak; undergrowth
of shrubs and vines is heavy in most places. Cleared areas are
used for small grains, corn, soybeans, and pasture.
DISTRIBUTION AND EXTENT: Gulf Coastal Plain, western Alabama,
Mississippi, Arkansas, Louisiana, and Texas. The series is of
moderate extent
SERIES ESTABLISHED: Hancock County, Mississippi; 1930.
REMARKS: The Weston series was formerly classified in the
Low-Humic Gley great soil group.