LOCATION CADEVILLE LA+AL MS OKEstablished Series
TAXONOMIC CLASS: Fine, mixed, active, thermic Albaquic Hapludalfs
TYPICAL PEDON: Cadeville very fine sandy loam--forest.
(Colors are for moist soil unless otherwise stated.)
A--0 to 1 inch; dark grayish brown (10YR 4/2) very fine
sandy loam; common fine faint pale brown and yellowish brown
mottles; weak fine granular structure; friable; many wormholes; strongly acid; abrupt wavy boundary. (1 to 5 inches thick)
E--1 to 7 inches; brown (10YR 5/3) very fine sandy loam;
weak medium subangular blocky structure; very friable; medium
acid; abrupt smooth boundary. (0 to 8 inches thick)
Bt1--7 to 12 inches; brown (7.5YR 5/4) clay; common medium distinct light brownish gray (10YR 6/2) mottles; moderate fine and medium subangular blocky structure; firm; patchy yellowish red
areas on faces of peds; thin clay films in pores; strongly acid; clear smooth boundary. (0 to 5 inches thick)
Bt2--12 to 23 inches; yellowish red (5YR 4/6) clay; common medium prominent grayish brown (10YR 5/2) mottles and few fine distinct red mottles; moderate medium subangular blocky structure; firm; many fine pores; few thin clay films on faces of peds and in pores; few yellowish brown concretions; very strongly acid; clear smooth boundary. (5 to 24 inches thick)
Btg1--23 to 34 inches; light brownish gray (10YR 6/2) clay;
few fine faint yellowish brown mottles; weak coarse angular blocky structure; very firm; few thin clay films on larger peds; few yellowish brown concretions; very strongly acid; abrupt smooth boundary. (5 to 15 inches thick)
Btg2--34 to 46 inches; light brownish gray (2.5Y 6/2) clay;
many medium distinct dark brown (10YR 3/3) and strong brown (7.5YR 5/6) mottles; weak coarse subangular blocky structure; firm; few
thin clay films on vertical cracks and faces of peds; a few horizontal bands 1 to 2 inches wide of yellowish brown light clay
to sandy clay; very strongly acid; abrupt smooth boundary. (0 to
15 inches thick)
BC--46 to 54 inches; grayish brown (2.5Y 5/2) silty clay;
common fine faint yellowish brown mottles; weak coarse subangular blocky structure; firm; very strongly acid; clear smooth boundary. (0 to 20 inches thick)
C--54 to 64 inches; light brownish gray (2.5Y 6/2) silty clay; common medium distinct strong brown (7.5YR 5/6) and a few fine prominent yellowish red mottles; weak thick platy structure; firm; few leaf imprints between plates; very strongly acid; clear smooth boundary.
TYPE LOCATION: Ouachita Parish, Louisiana; about 14 miles
southwest of West Monroe, 2 1/2 miles southwest of Luna Lookout Tower. NW1/4SW1/4 sec. 28, T. 16 N., R. 2 E., 2120 feet east and
1560 feet north of southwest section corner, 30 feet west of
pipeline right-of-way.
RANGE IN CHARACTERISTICS: Solum thickness ranges from 30 to 60 inches.
The A1 or Ap horizons are very dark grayish brown (10YR 3/2), dark grayish brown (10YR 4/2), dark brown (10YR 3/3), brown (10YR 4/3, 5/3), dark yellowish brown (10YR 4/4), yellowish brown (10YR 5/4),
or light yellowish brown (10YR 6/4). It ranges from extremely acid to medium acid.
The E horizon is grayish brown (10YR 5/2), brown (10YR 5/3), yellowish brown (10YR 5/4), light brownish gray (10YR 6/2), pale brown (10YR 6/3), or light yellowish brown (10YR 6/4). The A horizons are fine sandy loam, very fine sandy loam, or silt loam.
It ranges from extremely acid to medium acid.
The Bt1 horizon ranges from brown to red and are sandy clay loam, clay loam, or silty clay loam, clay or silty clay. This horizon
is not present in all pedons.
The Bt2 horizon is reddish brown (5YR 4/3, 4/4, 5/3, 5/4; 2.5YR
4/4, 5/4), yellowish red (5YR 4/6, 4/8, 5/6, 5/8), red (2.5YR 4/6, 4/8, 5/6, 5/8), or light brownish gray (2.5Y 6/2; 10YR 6/2). Few through many mottles of light brownish gray (10YR 6/2; 2.5Y 6/2), grayish brown (10YR 5/2), gray (10YR 5/1, 6/1; N 5/0, 6/0), or
light gray (10YR 7/1, 7/2; N 7/0; 2.5Y 7/2), or red (2.5YR 4/6,
5/6), occur within the upper 10 inches of the B horizons. The
lower Bt and BC horizons are mottled with shades of gray, brown,
red, or yellow. The B2 and B3 horizons are silty clay loam, silty clay, or clay. They are strongly acid, very strongly acid, or extremely acid.
COMPETING SERIES: These are the Boswell, Counts, Gore, Homa, Luverne, Susquehanna, and Wister series. Boswell soils have solum thickness exceeding 60 inches and clayey Bt horizons which crack during dry seasons. Counts soils have hues of 2.5Y through 7.5YR in the Bt horizon with sola thicker than 60 inches. Gore soils have hues of 5YR or 2.5YR in the B3 horizons and reddish clay C horizons which are medium acid through mildly alkaline. Homa soils have very-fine textures. Luverne soils lack mottles in the B2 horizons. Susquehanna soils have sola thickness exceeding 60 inches and montmorillonitic mineralogy. Wister soils have upper Bt horizons in color hue of 10YR.
GEOGRAPHIC SETTING: Cadeville soils are on nearly level through steeply sloping surfaces of the Coastal Plains. Slope gradients range from 1 to 20 percent. The soil is formed in marine or stream deposits of clay and silty clay. The climate is warm and humid. The mean annual temperature near the type location is 65.5 degrees F., and the mean annual precipitation is 50.5 inches.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the competing
Boswell series, and the
Bowie,
Lucy,
Ora,
Ruston,
Savannah, and
Shubuta series. Bowie, Ora, Ruston, and Savannah soils are better drained and have 18 to 35 percent clay in the B horizons. In addition,
Ora and Savannah soils have fragipans. Lucy soils have sandy A horizons 20 to 40 inches thick and red loamy Bt horizons. Shubuta soils have thicker sola and lack mottles with chroma of 2 or less
in the upper 10 inches of the B horizon.
DRAINAGE AND PERMEABILITY: Moderately well drained; moderate to very rapid runoff; very slow permeability.
USE AND VEGETATION: Pine and mixed hardwood forests.
DISTRIBUTION AND EXTENT: Southern Coastal Plain in Alabama, Arkansas, Mississippi, Louisiana, and possibly Texas and Georgia. The series is probably extensive, exceeding 15,000 acres in the county where proposed.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Temple, Texas
SERIES ESTABLISHED: McCurtain County, Oklahoma; 1970.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - the zone from the surface to 7 inches
(the A and E horizons)
Argillic horizon - the zone from 7 to 46 inches (the Bt1, Bt2,
Btg1, Btg2 horizons)
Abrupt textural change at 7 inches (the contact between the E and Bt1 horizon)