LOCATION RAISIN TXTentative Series
TAXONOMIC CLASS: Fine-loamy, mixed, superactive, hyperthermic Typic Haplustalfs
TYPICAL PEDON: Raisin fine sandy loam--rangeland.
(Colors are for moist soil unless otherwise stated.)
A--0 to 6 inches; grayish brown (10YR 5/2) fine sandy loam, dark grayish brown (10YR 4/2) moist; weak fine and medium subangular blocky structure; soft, very friable; many fine and medium and few coarse roots; few fine interstitial and tubular pores; few siliceous pebbles; slightly acid; clear wavy boundary. (4 to 9 inches thick)
Btl--6 to 18 inches; 50 percent yellowish red (5YR 5/6), 35 percent red (2.5YR 4/6) sandy clay loam, yellowish red (5YR 4/6), dark red (2.5YR 3/6) moist; moderate fine and medium subangular blocky structure; hard, firm; common fine and few medium roots; few tubular pores; few distinct clay films on surfaces of peds; common siliceous pebbles; 15 percent fine and medium prominent light brownish gray (10YR 6/2) iron depletions with sharp boundaries; slightly acid; gradual wavy boundary.
Bt2--18 to 40 inches; brown (7.5YR 5/4) sandy clay loam, brown (7.5YR 4/4) moist; moderate fine and medium subangular blocky structure; hard, firm; few distinct clay films on surfaces of peds; very few very fine roots; few very fine tubular pores; 1 percent fine prominent red (2.5YR 5/6) iron concentrations with sharp boundaries on surfaces of peds; common siliceous pebbles; neutral; clear smooth boundary. (The combined thickness of the Bt horizons is 20 to 35 inches)
Bk--40 to 57 inches; 75 percent pale yellow (2.5Y 7/4) and 25 percent yellow (2.5Y 7/6) sandy clay loam, light yellowish brown (2.5Y 6/4) and olive yellow (2.5Y 6/6) moist; common fine and medium yellowish brown (10YR 5/4) mottles; weak fine subangular blocky structure; slightly hard, friable; very few very fine roots; few very fine tubular pores; common fine to coarse masses of calcium carbonate; few siliceous pebbles; moderately alkaline; clear smooth boundary. (10 to 25 inches thick)
BCk--57 to 80 inches; light yellowish brown (2.5Y 6/4) fine sandy loam, pale yellow (2.5Y 7/4) moist; weak coarse subangular blocky structure; slightly hard, very friable; very few very fine roots; very few very fine tubular pores; common fine and medium masses of calcium carbonate; few siliceous pebbles; moderately alkaline.
TYPE LOCATION: Goliad County, Texas; from the intersection of U.S. Highway 59 and U.S. Highway 183 in Goliad; about 10 miles south on U.S. Highway 183; 0.5 mile west on ranch road; located about half-way down sideslope into Buzzard Creek in rangeland; Lott Lake USGS Quadsheet; Latitude: 28N, 26, 27.0; Longitude: 97W, 12, 10.0 )
RANGE IN CHARACTERISTICS:
Solum thickness is more than 80 inches.
Soil Moisture: An ustic soil moisture regime. The soil moisture control section, 4 to 12 inches, is dry in some or all parts for more than 90 but less than 180 cumulative days in normal years. July through September, December, and March are the driest months.
Mean annual soil temperature: 70 to 74 degrees F.
Depth to argillic horizon: 4 to 9 inches
Depth to secondary calcium carbonate: 30 to 45 inches
Depth to calcic horizon: 35 to 45 inches
Depth to redox concentrations: 6 to 15 inches
Particle-size control section (weighted average)
Clay content: 27 to 35 percent
CEC to clay: 0.6 to 1.5
A Horizon
Hue: 10YR
Value: 4 or 5 moist or dry
Chroma: 2 or 3 moist or dry
Texture: fine sandy loam, loamy fine sand
Clay content: 4 to 10 percent
Reaction: slightly acid or neutral
Bt Horizon
Part: Upper
Hue: 2.5YR or 5YR
Value: 4 to 6 moist or dry
Chroma: 4 to 8 moist or dry
Texture: sandy clay loam, clay loam, clay
Clay content: 30 to 40 percent
Iron concentrations: amount-0 to 5, size-fine, contrast-faint or distinct, shades-brown or red, boundary-sharp; location-surfaces of peds
Iron depletions: amount-5 to 15, size-fine or medium, contrast-prominent, shades-gray, boundary-sharp
Reaction: slightly acid or neutral
Bt Horizon
Part: Lower
Hue: 5YR or 7.5YR
Value: 4 to 6 moist or dry
Chroma: 4 to 8 moist or dry
Texture: sandy clay loam, clay loam
Clay content: 20 to 30 percent
Iron concentrations: amount-1 to 5 percent, size-fine or medium, contrast-faint to prominent, shades-brown or red, boundary-sharp; location-surfaces of peds
Reaction: neutral to slightly alkaline
Bk or Btk Horizon
Hue: 10YR or 2.5Y
Value: 5 to 8 moist or dry
Chroma: 3 to 6 moist or dry
Texture: fine sandy loam or sandy clay loam
Clay content: 15 to 25 percent
Calcium carbonate equivalent: 15 to 30 percent
Reaction: slightly alkaline or moderately alkaline
BCk Horizon
Hue: 10YR or 2.5Y
Value: 5 to 8 moist or dry
Chroma: 3 to 6 moist or dry
Texture: loamy fine sand or fine sandy loam
Clay content: 5 to 15 percent
Calcium carbonate equivalent: 20 to 40 percent
Reaction: slightly alkaline or moderately alkaline
COMPETING SERIES: There are no series in the same family. Similar soils are the
Papalote and
Runge series.
Papalote soils: These soils have a fine particle-size argillic horizon.
Runge soils: These soils have a mollic epipedon.
GEOGRAPHIC SETTING:
Parent material: Loamy and sandy sediments derived from early-Pleistocene or late-Pliocene age mainly of the Goliad Formation.
Landform: Uplands
Slope: 1 to 5 percent
Mean annual temperature: 71 to 74 degrees F.
Mean annual precipitation: 30 to 38 inches
Precipitation Pattern: The majority of the yearly amount occurs during the fall and spring months. The summer months are normally dry with infrequent coastal showers. The late summer months are subject to periods of high intense rainfall as a result of tropical disturbances.
Frost-free period: 260 to 300 days
Elevation: 100 to 250 feet
Thornthwaite annual P-E indices: 40 to 46
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Orelia,
Papalote and
Weesatche series.
Orelia soils: These soils have a hue of 10YR in the subsoil and are on a lower landscape position.
Papalote soils: These soils have a fine particle-size argillic horizon and are on a similar landscape position.
Weesatche soils: These soils have a mollic epipedon and are on a similar to higher landscape position.
DRAINAGE AND PERMEABILITY: Well drained. Moderate permeability. Runoff is low.
USE AND VEGETATION: Used mainly as rangeland and wildlife habitat. The vegetation is live oak, post oak, bluestems, gramas, and threeawns. Mesquite and huisache have encroached in some areas.
DISTRIBUTION AND EXTENT: San Antonio River to the Nueces River in the transition area between MLRA 83A and MLRA 150A; LRR T; Small extent.
MLRA OFFICE RESPONSIBLE: Temple, Texas
SERIES PROPOSED: Goliad County, Texas. The name is for a community in Victoria County.
REMARKS: These soils were formerly included in the Delfina series. The Delfina series has aquic conditions and the series province is confined to MLRA 83D in the lower Rio Grande valley. The redoximorphic features in the argillic horizon are not contemporary. Mineralogy of the series may change pending lab data. These soils are in association with other soils that have borderline siliceous/mixed mineralogy.
Diagnostic horizons and features recognized in this pedon are:
Particle size control section: 6 to 26 inches. (Bt horizons)
Ochric epipedon: 0 to 6 inches. (A horizon)
Argillic horizon: 6 to 40 inches. (Bt horizons)
Calcic horizon: 40 to 80 inches. (Bk and BCk horizons)
Redoximorphic concentrations: 12 to 40 inches. (Bt horizons)
The assignment of the cation-exchange activity class is inferred from lab data from Goliad and Refugio Counties.
Ecological Site: Sandy Loam (083AY 407TX).
ADDITIONAL DATA: Lab data from type location by MLRA 150 Soil Survey Office.
TAXONOMIC VERSION: Soil Taxonomy, Second Edition, 199.