LOCATION ANDER TXEstablished Series
TAXONOMIC CLASS: Fine, smectitic, hyperthermic Udic Paleustolls
TYPICAL PEDON: Ander fine sandy loam,--on a south facing, convex, 1 percent slope in rangeland at an elevation of 83 m (277 ft). (Colors are for dry soil unless otherwise stated.)
A1--0 to 16 cm (0 to 6 in); very dark brown (10YR 2/2) fine sandy loam, very dark grayish brown (10YR 3/2), moist; weak fine subangular blocky structure, and moderate medium granular structure; very friable, soft; common fine roots and many very fine roots; common fine interstitial and common very fine tubular pores; slightly acid; clear smooth boundary.
A2--16 to 30 cm (6 to 12 in); black (10YR 2/1) fine sandy loam, black (10YR 2/1), moist; weak fine subangular blocky structure; very friable, soft; many very fine roots; common fine and medium tubular and and many very fine tubular pores; neutral; abrupt smooth boundary. [combined thickness of the A horizon is 18 to 41 cm (7 to 16 in)]
Bt1--30 to 42 cm (12 to 17 in); very dark brown (10YR 2/2) sandy clay, very dark brown (10YR 2/2), moist; moderate medium prismatic structure parting to moderate medium angular blocky; firm, hard; many very fine roots; many very fine tubular pores; 5 percent faint pressure faces; 10 percent distinct clay films; 1 percent very fine prominent dark reddish brown (5YR 3/4) masses of oxidized iron with sharp boundaries lining pores; 1 percent fine distinct dark grayish brown (2.5Y 4/2) masses of oxidized iron with clear boundaries in matrix; neutral; clear smooth boundary.
Bt2--42 to 71 cm (17 to 28 in); grayish brown (10YR 5/2) sandy clay, dark grayish brown (10YR 4/2), moist; moderate medium prismatic structure parting to moderate medium angular blocky; firm, hard; common very fine and fine roots; common very fine and fine tubular pores; 10 percent faint pressure faces; 20 percent distinct clay films; 3 percent medium and coarse distinct dark grayish brown (2.5Y 4/2) masses of oxidized iron with diffuse boundaries in matrix; slightly alkaline; gradual smooth boundary.
Bt3--71 to 97 cm (28 to 38 in); grayish brown (10YR 5/2) sandy clay, dark grayish brown (10YR 4/2), moist; moderate medium and coarse prismatic structure parting to moderate medium and coarse angular blocky; firm, hard; common very fine roots; common very fine tubular pores; 5 percent faint pressure faces; 20 percent distinct clay films; 1 percent fine distinct dark yellowish brown (10YR 4/6) masses of oxidized iron with sharp boundaries in matrix; moderately alkaline; clear smooth boundary. [combined thickness of the Bt horizon is 41 to 91 cm (16 to 36 in)]
Btk1--97 to 114 cm (38 to 45 in); pale brown (10YR 6/3) sandy clay loam, brown (10YR 5/3), moist; moderate medium and coarse prismatic structure parting to moderate medium and coarse angular blocky; very firm, hard; common very fine and fine roots; common very fine to medium tubular pores; 10 percent faint clay films; 1 percent medium faint brown (10YR 4/3) masses of oxidized iron with clear boundaries in matrix; 3 percent fine white (10YR 8/1) masses of calcium carbonate masses; 2 percent medium white (10YR 8/1) nodules of calcium carbonate; very slight effervescence; moderately alkaline; clear smooth boundary.
Btk2--114 to 151 cm (45 to 59 in); pale yellow (2.5Y 7/3) sandy clay loam, light yellowish brown (2.5Y 6/3), moist; moderate medium and coarse subangular blocky structure; firm, moderately hard; common very fine roots; common medium tubular and common very fine tubular pores; 10 percent distinct clay films; 3 percent fine prominent strong brown (7.5YR 5/6) masses of oxidized iron with clear boundaries in matrix surrounding redox concentrations; 8 percent fine and medium prominent yellowish red (5YR 5/8) masses of oxidized iron with sharp boundaries in matrix; 3 percent fine white (10YR 8/1) masses of calcium carbonate; 2 percent medium white (10YR 8/1) nodules of calcium carbonate; very slight effervescence; slightly alkaline; clear smooth boundary.
Btk3--151 to 183 cm (59 to 72 in); light reddish brown (5YR 6/4) sandy clay loam, reddish brown (5YR 5/4), moist; moderate medium and coarse subangular blocky structure; very firm, moderately hard; common fine tubular and common very fine tubular pores; 10 percent distinct clay films; slight effervescence; moderately alkaline; abrupt wavy boundary. [combined thickness of the Btk horizon is 51 to 91 cm (20 to 36 in)]
Bk--183 to 203 cm (72 to 80 in); light brown (7.5YR 6/4) loam, brown (7.5YR 5/4), moist; weak very coarse subangular blocky structure; very firm, moderately hard; 35 percent coarse white (10YR 8/1) masses of calcium carbonate; strong effervescence; moderately alkaline.
TYPE LOCATION: Goliad County, Texas; from the intersection of Farm Road 1351 and Newton-Powell Road; 100 feet south on Farm Road 1351 to private ranch entrance; 0.3 mile west, .3 mile south, 1.8 mile west and southwest, 0.4 mile west, 0.95 mile north on ranch road; 75 feet east in range land. Charco USGS quad; Latitude: 28 degrees, 38 minutes, 49.9 seconds N; Longitude: 97 degrees, 37 minutes, 10.3 seconds W.; NAD 83.
RANGE IN CHARACTERISTICS:
Soil Moisture: An ustic soil moisture regime bordering on udic. The soil moisture control section remains dry for less than 120 cumulative days in normal years. Precipitation falls mostly during the months of April through June and October and November. The driest months are July through September and January through March.
Mean annual soil temperature: 22.2 to 22.8 degrees C (72 to 73 degrees F)
Depth to argillic horizon: 18 cm to 38 cm (7 to 15 in)
Depth to secondary calcium carbonate: 61 to 122 cm (24 to 48 in)
Particle-size control section (weighted average)
Clay content: 35 to 45 percent
A horizon
Hue: 10YR
Value: 2 or 3
Chroma: 1 to 3
Texture: fine sandy loam
Clay content: 10 to 15 percent
Reaction: slightly acid or neutral
Bt horizon (upper part)
Hue: 10YR
Value: 2 to 4
Chroma: 1 or 2
Texture: clay or sandy clay
Clay content: 35 to 47 percent
Redox concentrations: amount-2 to 12 percent, color-shades of brown, yellow, or red
Redox depletions: amount-0 to 2 percent, color-shades of gray
Coarse fragments: 0 to 2 percent
Reaction: slightly acid to slightly alkaline
Bt horizon (lower part)
Hue: 10YR
Value: 4 to 6
Chroma: 1 to 3
Texture: sandy clay loam, clay loam, or sandy clay
Clay content: 25 to 38 percent
Redox concentrations: amount-5 to 20 percent, color-shades of brown, yellow, or red
Redox depletions: amount-0 to 5 percent, color-shades of gray
Coarse fragments: 0 to 2 percent
Effervescence: none to slightly
Reaction: neutral or slightly alkaline
Btk horizon
Hue: 5YR, 7.5YR, or 10YR
Value: 4 to 7
Chroma: 3 to 6
Texture: sandy clay loam or clay loam
Clay content: 25 to 35 percent
Coarse fragments: 0 to 5 percent
Calcium carbonate equivalent: 1 to 10 percent
Identifiable secondary carbonate: amount-1 to 5 percent, kind-masses or concretions
Effervescence: very slightly to strongly
Reaction: slightly alkaline or moderately alkaline
Bk horizon
Hue: 7.5YR or 10YR
Value: 4 to 7
Chroma: 3 or 4
Texture: loam, sandy clay loam, or clay loam
Clay content: 20 to 35 percent
Coarse fragments: 0 to 5 percent
Calcium carbonate equivalent: 15 to 50 percent
Identifiable secondary carbonate: amount-2 to 10 percent, kind-masses or concretions
Effervescence: slightly to violently
Reaction: moderately alkaline
COMPETING SERIES: There are no other series in the same family. Similar soils are the Charco (TX), Dubina (TX), Papalote (TX), and Weesatche (TX) series.
Charco soils: are in an ustic soil moisture regime bordering on aridic; have vertic soil properties, and have gypsum and other salts in the lower subsoil horizons
Dubina soils: are in a thermic soil temperature regime; A horizon allows loamy fine sand or loamy sand texture and hue of 7.5YR
Papalote soils: have an ochric epipedon
Weesatche soils: have less than 35 percent silicate clay in the particle-size control section
GEOGRAPHIC SETTING:
Parent material: residuum weathered from sandstone in the Goliad Formation
Landform: footslope position on low hills on an inland dissected coastal plain.
Slope: 0 to 3 percent
Mean annual air temperature range: 21 to 23 degrees C (70 to 73 degrees F)
Mean annual precipitation range: 711 to 914 mm (28 to 36 in)
Frost-free period: 248 to 305 days
Elevation: 46 to 122 m (150 to 400 ft)
Thornthwaite annual P-E indices: 38 to 48
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Clareville,
Papalote, and
Weesatche series.
Clareville soils: have a sandy clay loam or clay loam surface and are on stream terraces.
Papalote soils: are on similar landforms
Weesatche soils: are on similar landforms
DRAINAGE AND PERMEABILITY: Moderately well drained. Permeability is slow. Runoff is medium on slopes less than 1 percent slopes and high on 1 to 3 percent slope.
USE AND VEGETATION: Used mostly for livestock grazing and wildlife habitat. Native grasses include little bluestem, feathery bluestem, Nash and hooded windmillgrass, and Texas and plains bristlegrass. Woody species consist of live oak, post oak, mesquite, huisache, spiny hackberry, and pricklypear. Coastal bermudagrass is the dominant improved pasture grass. (Ecological site name: Tight Sandy Loam 25-35" Pz; Ecological site number: R083AY412TX)
DISTRIBUTION AND EXTENT: Northern Rio Grande Plain (MLRA 83A in LRR I) of south-central Texas; minor extent
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Temple, Texas
SERIES ESTABLISHED: Goliad County, Texas, 2009. The name comes from a town in northern Goliad County.
REMARKS: These soils were formerly included with the Papalote series. The Papalote series has an ochric epipedon. The redoximorphic features are considered relict and do not reflect present day moisture conditions.
Diagnostic horizons and features recognized in this pedon are:
Particle size control section: 30 to 80 cm (11.8 to 31.5 in) (Bt1, Bt2, and Bt3 horizons)
Mollic epipedon: 0 to 42 cm (0 to 16.5 in) (A1, A2, and Bt1 horizons)
Argillic horizon: 30 to 183 cm (11.8 to 72 in) (Bt1, Bt2, Bt3, and Btk horizons)
Pale feature: abrupt texture change from the A to Bt horizons.
ADDITIONAL DATA: Characterization data from the series type location by the National Soil Survey Laboratory on sample (S07TX-175-002).
TAXONOMIC VERSION: Keys to Soil Taxonomy, Tenth Edition, 2006