LOCATION PALUXY TXEstablished Series
TAXONOMIC CLASS: Coarse-loamy, mixed, active, thermic Udic Haplustepts
TYPICAL PEDON: Paluxy fine sandy loam--cropland. (Colors are for dry soil unless otherwise stated.
Ap--0 to 10 inches; brown (7.5YR 5/4) very fine sandy loam, dark brown (7.5YR 4/4) moist; weak coarse prismatic parting to weak medium subangular blocky structure; slightly hard, very friable; few fine roots; slightly acid; clear smooth boundary. (4 to 19 inches thick)
B21--10 to 34 inches; reddish brown (5YR 5/4) very fine sandy loam, reddish brown (5YR 4/4) moist; weak coarse prismatic parting to weak medium subangular blocky structure; slightly hard, friable; few fine roots; few wormcasts, few fine pores; slightly acid; gradual smooth boundary. (9 to 24 inches thick)
B22--34 to 46 inches; yellowish red (5YR 5/6) very fine sandy loam, yellowish red (5YR 4/6) moist; weak coarse prismatic structure; slightly hard, friable; few insect burrows of darker color; neutral; gradual smooth boundary. (9 to 32 inches thick)
C--46 to 62 inches; reddish yellow (5YR 6/8) very fine sandy loam, yellowish red (5YR 5/8) moist; massive; slightly hard, friable; calcareous, moderately alkaline.
TYPE LOCATION: Somervell County, Texas; about 5 miles east of Glen Rose. From intersection of Texas Highway 144 and U. S. Highway 67 in Glen Rose, east 2.6 miles on U. S. Highway 67 to Farm Road 200, south on Farm Road 200 for 1.1 miles, west on paved county road 1.1 mile to gate, west on farm lane .2 mile and 30 yards south in cultivated field.
RANGE IN CHARACTERISTICS: Depth to carbonates ranges from 36 to 80 inches. Texture is very fine sandy loam or loam throughout and fine sand or coarser ranges from 15 to 35 percent.
The A horizon is brown (7.5YR 5/4, 5/2; 10YR 5/3), yellowish brown (10YR 5/4), reddish brown (5YR 5/4), light brown (7.5YR 6/4), pale brown (10YR 6/3), or light yellowish brown (10YR 6/4). It is slightly acid or neutral.
The B horizons are reddish brown (5YR 5/4, 4/4), yellowish red (5YR 5/6, 4/6, 5/8, 4/8), or reddish yellow (5YR 6/6, 6/8; 7.5YR 6/6, 6/8). They are slightly acid, neutral, or mildly alkaline.
The C horizon is reddish yellow (5YR 6/8, 6/6; 7.5YR 6/8, 6/6), yellowish red (5YR 5/6, 4/6, 5/8, 4/8), strong brown (7.5YR 5/8, 5/6), light reddish brown (5YR 6/4), or pink (5YR 7/4). Visible carbonates in the C horizons range from lacking to visible films, threads, and soft bodies.
COMPETING SERIES: These are the Amber, Dill, Enterprise, Hardeman, Noble, Reinach, Spade, and Woodward series. Amber, Enterprise, and Reinach soils have fine-silty control sections. In addition, Reinach soils have mollic epipedons. Dill, Spade, and Woodward soils are underlain by weakly to strongly cemented sandstone within a depth of 40 inches and occur in drier areas. Hardeman soils have secondary lime within a depth of 36 inches. Noble soils have siliceous mineralogy. Spade and Woodward soils are also calcareous throughout.
GEOGRAPHIC SETTING: Paluxy soils are on nearly level to sloping uplands with mainly convex to plane surfaces. Slopes gradients are generally less than 3 percent, but range from 0 to 8 percent. The soil formed in medium textured eolian or alluvial material in close proximity to the channel of the Brazos River and its tributaries. The climate is dry subhumid. The average annual rainfall ranges from 28 to 38 inches. The mean annual temperature ranges from 59 degrees to 69 degrees F., and Thornthwaite P-E indices from 44 to 64.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Bastrop, Pedernales, and Yahola series. Bastrop and Pedernales soils have Bt horizons. Yahola soils are calcareous throughout the solum, and have bedding planes in the control section.
DRAINAGE AND PERMEABILITY: Well drained; slow runoff; moderately rapid permeability.
USE AND VEGETATION: sed mostly for cropland. Peanuts, cotton, and grain sorghums are the principal crops. Native vegetation is mainly bluestems, indiangrass, sideoats grama, and woody species of elm, hackberry, cottonwood, and pecan.
DISTRIBUTION AND EXTENT: Central Texas, mainly along the Brazos River. These soils are inextensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Temple, Texas
SERIES ESTABLISHED: Somervell County, Texas; l975; Hood and Somervell Counties, Texas Survey Area.
REMARKS: These soils were formerly classified in the Regosol great soil group and included in the Hardeman series.