LOCATION WESTCOTT TX

Tentative Series
JKW-RM
07/2014

WESTCOTT SERIES

The Westcott series consists of very deep, moderately well drained soils. These nearly level soils formed in fluviomarine deposits derived from the Lissie Formation of early Pleistocene age. Slope ranges from 0 to 1 percent. Mean annual temperature is about 20 degrees C (68 degrees F), and mean annual precipitation is about 1321 mm (52 in).

TAXONOMIC CLASS: Coarse-loamy, siliceous, semiactive, thermic Oxyaquic Glossudalfs

TYPICAL PEDON: Westcott very fine sandy loam, in an area of Westcott-Plumgrove complex, 0 to 1 percent slopes. (Colors are for moist soil unless otherwise stated.)

A--0 to 13 cm, (0 to 5 in); dark grayish brown (10YR 4/2) very fine sandy loam; weak fine subangular blocky; very friable; many very fine and fine roots; common fine tubular and many very fine tubular pores; very strongly acid; clear smooth boundary. (7 to 24 cm [3 to 10 in] thick)

E--13 to 30 cm, (5 to 12 in); pale brown (10YR 6/3) very fine sandy loam; weak fine subangular blocky; very friable; many fine roots and many very fine roots; many very fine and fine and tubular pores; 2 percent fine distinct brownish yellow (10YR 6/6) masses of oxidized iron in matrix; strongly acid; clear wavy boundary. (15 to 69 cm [6 to 27 in] thick)

B/Et1--30 to 54 cm, (12 to 21 in); pale brown (10YR 6/3) (Bt) and 20 percent yellowish brown (10YR 5/4)(E) loam; weak fine subangular blocky structure; friable; common very fine roots; common very fine tubular pores; 10 percent faint grayish brown (10YR 5/2), moist, clay films on all faces of peds; 5 percent medium prominent light yellowish brown (10YR 6/4) masses of oxidized iron in matrix surrounding redox concentrations; strongly acid; gradual smooth boundary. (combined thickness of the Bt/E horizons is 51 to 152 cm [20 to 60 in])

B/Et2--54 to 82 cm, (21 to 32 in); very pale brown (10YR 7/3) (Bt) and 15 percent pale brown (10YR 6/3) (E) loam; weak fine subangular blocky structure; friable; few very fine roots; few fine and few very fine pores; 10 percent faint light brownish gray (10YR 6/2), moist, clay films on all faces of peds; 10 percent coarse prominent yellowish red (5YR 5/8) masses of oxidized iron in matrix surrounding redox concentrations and 10 percent medium prominent yellowish red (5YR 5/8) masses of oxidized iron in matrix surrounding redox concentrations and 15 percent medium prominent brownish yellow (10YR 6/6) masses of oxidized iron in matrix; strongly acid; gradual smooth boundary.

B/Et3--82 to 113 cm, (32 to 45 in); pale brown (10YR 6/3) (Bt) and 15 percent very pale brown (10YR 7/3) (E) loam; moderate medium subangular blocky structure; firm; few fine and very fine roots; few fine tubular pors15 percent faint light brownish gray (10YR 6/2), moist, clay films on all faces of peds; 5 percent medium prominent yellowish red (5YR 5/8) masses of oxidized iron in matrix surrounding redox concentrations and 10 percent medium prominent brownish yellow (10YR 6/6) masses of oxidized iron in matrix; strongly acid; gradual wavy boundary.

B/Et4--113 to 154 cm, (45 to 61 in); pale brown (10YR 6/3) loam; moderate medium subangular blocky structure; firm; few very fine roots; few fine tubular pores; 15 percent faint grayish brown (10YR 5/2), moist, clay films on all faces of peds; 5 percent medium prominent brownish yellow (10YR 6/6) masses of oxidized iron in matrix and 15 percent medium prominent yellowish red (5YR 5/8) masses of oxidized iron in matrix; strongly acid; clear smooth boundary.

Btg/E--154 to 203 cm, (61 to 80 in); light brownish gray (10YR 6/2) loam; moderate medium subangular blocky structure; firm; 4 percent faint grayish brown (10YR 5/2), moist, clay films on all faces of peds; 5 percent medium prominent brownish yellow (10YR 6/6) masses of oxidized iron in matrix and 10 percent medium prominent yellowish red (5YR 5/8) masses of oxidized iron in matrix; strongly acid.

TYPE LOCATION: Liberty County, Texas; from the intersection of Texas Highway 105 and Fenner Street in Cleveland; 0.3 mile north on Fenner Street to the intersection with FM 787; 5.0 miles east on FM 787 to Firetower Road; 0.6 mile south on Firetower Road to pipeline; 0.2 mile southeast on pipeline; 100 feet south of right-of-way. Latitude: 30 degrees 21 minutes 20.30 seconds N; Longitude: 94 degrees 59 minutes 58.90 seconds W. Cleveland topographic quadrangle; WGS 84.

RANGE IN CHARACTERISTICS:
Soil Moisture: An udic soil moisture regime. The soil moisture control section is 20 to 60 cm (8 to 24 in) below the soil surface, which is not dry in any part for more than 90 cumulative days in normal years.
Mean annual soil temperature: 20.6 to 21.7 (69 to 71 degrees F)
Particle-size control section (weighted average)
Clay content: 7.7 to 16.2 percent.

Base saturation at taxonomic depth: 37 to 74 percent.

A horizon
Hue: 10YR
Value: 4 or 5
Chroma: 2 or 3
Texture: very fine sandy loam, fine sandy loam, or silt loam
Reaction: very strongly acid to moderately acid

E horizon
Hue: 7.5YR or 10YR
Value: 5 to 7
Chroma: 3 to 4
Texture: very fine sandy loam, fine sandy loam, silt loam
Iron concentrations: amount-0 to 15 percent, color-shades of brown, yellow, or red
Iron depletions: amount-0 to 1 percent, color-shades of gray
Reaction: very strongly acid to moderately acid

Bt/E horizon
Part: Bt
Hue: 7.5YR or 10YR
Value: 5 to 7
Chroma: 3 to 6
Part: E
Hue: 7.5YR or 10YR
Value: 6 or 7
Chroma: 3 or 4
Texture: very fine sandy loam, fine sandy loam, silt loam, loam, sandy clay loam or clay loam
Iron concentrations: amount-5 to 25 percent; color-shades of brown, red, or yellow; located mostly in the Bt.
Iron depletions: amount-0 to 2 percent; color- shades of gray,
Reaction: very strongly acid to moderately acid

Btg/E horizon (where present)
Part: Bt
Hue: 7.5YR or 10YR
Value: 5 to 7
Chroma: 2
Part: E
Hue: 7.5YR or 10YR
Value: 6 or 7
Chroma: 3
Texture: loam, sandy clay loam, clay loam
Iron concentrations: amount-5 to 25 percent; color-shades of brown, red, or yellow; located mostly in the Bt
Iron depletions: amount-0 to 2 percent; color- shades of gray, blue or green
Reaction: very strongly acid to moderately acid

COMPETING SERIES: These include the Keltys (TX) and Laska (TX) series in the same family. Similar soils include the Dallardsville (TX), Gist (TX), Kountze (TX), Tarkington (T)(TX)series
Keltys soils: have a 2C horizon starting at 135 cm (53 in).
Laska soils: have a 2Cr horizon starting at 160 cm (64 in).
Dallardsville soils: have less than 35 percent base saturation in the lower part of the argillic horizon.
Gist soils: are in a coarse-silty particle-size family
Kountze soils: are in an active CEC to clay class; have less than 35 percent base saturation in the lower part of the argillic horizon
Tarkington soils: do not have a Btg/E horizon

GEOGRAPHIC SETTING:
Parent material: Loamy fluvioumarine deposits derived from mixed origin of the Lissie Formation of early to mid-Pleistocene age.
Landscape: inland dissected coastal plains
Landform: interfluves
Slope: 0 to 1 percent
Mean annual air temperature: 19.5 to 20.6 degrees C (67 to 69 degrees F).
Mean annual precipitation: 1219 to 1473 mm (48 to 58 in)
Precipitation pattern: uniform throughout the year with slight peaks in the spring and summer
Frost-free period: 240 to 300 days
Elevation: 22.9 to 46 m (75 to 150 ft)

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Segno (TX), Sorter (TX), Splendora (TX), Tarkington (T) (TX), and Waller (TX) series.
Segno, Splendora, and Waller soils: fine-loamy particle-size control section. Segno and Splendora soils are on a higher landform. Waller soils are poorly drained and are on flats.
Sorter soils: are poorly drained; on flats
Tarkingon soils: are on pimple mounds

DRAINAGE AND PERMEABILITY: Moderately well drained. Runoff is low. A perched water table is at a depth of 30 to 82 cm (12 to 32 in) and lasts from December to March in normal years. An apparent water table starts at a depth of 154 cm (61 in) and lasts from January to April in normal years.

USE AND VEGETATION: Used primarily for timber production and wildlife habitat. The main trees are loblolly pine, shortleaf pine, longleaf pine, water oak, willow oak, southern red oak, and sweetgum. Understory includes yaupon, southern bayberry, pinehill bluestem, longleaf uniola, and sedges.

DISTRIBUTION AND EXTENT: In the Western Gulf Coast Flatwoods (MLRA 152B) of southeast Texas and possibly Louisiana. The series is of moderate extent.

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Temple, Texas.

SERIES PROPOSED: Liberty County, Texas; 2012.

REMARKS: These soils were previously correlated as the Kountze series. During the update of MLRA 152B, soil survey office lab data indicate these areas are alfisols.

Diagnostic horizons and features in this pedons are:
Ochric epipedon--0 to 30 cm (0 to 12 in) (A horizon)
Argillic horizon--97 to 203 cm (38 to 80 in) (Bt/E, Bt/Eg, and Btx/Eg horizons)
Glossic horizon--53 to 203 cm (21 to 80 in) (E/Bt, Bt/Eg, Btx/Eg. The glossic horizon is series criteria but not diagnostic for classification.)

ADDITIONAL DATA: Kellogg Soil Survey Lab data on pedon S12TX3391040 from the type location. Additonal KSSL data from pedon S12TX3391037 (lab pedon number 12N8329.

Taxonomic Version: Keys to Soil Taxonomy, Eleventh Edition, 2010.

National Cooperative Soil Survey
U.S.A.