LOCATION HEATLY TXEstablished Series
TAXONOMIC CLASS: Loamy, mixed, active, thermic Arenic Paleustalfs
TYPICAL PEDON: Heatly fine sand--idle cropland. (Colors are for dry soil unless otherwise stated.)
Ap--0 to 28 inches; light brown (7.5YR 6/4) fine sand, brown (7.5YR 5/4) moist; single grain; loose; slightly acid; abrupt smooth boundary. (20 to 40 inches thick)
AB--28 to 34 inches; reddish brown (5YR 5/4) sandy loam, reddish brown (5YR 4/4) moist; weak coarse subangular blocky structure; hard, friable; neutral; gradual smooth boundary. (0 to 12 inches thick)
Bt1--34 to 52 inches; red (2.5YR 5/6) sandy clay loam, red (2.5YR 4/6) moist; moderate coarse blocky structure; very hard, friable; few distinct clay films on vertical ped surfaces; neutral; diffuse smooth boundary. (5 to 21 inches thick)
Bt2--52 to 64 inches; red (2.5YR 5/6) sandy clay loam, red (2.5YR 4/6) moist; weak coarse subangular blocky structure; hard, friable; few distinct clay films on vertical ped surfaces; neutral; diffuse smooth boundary. (7 to 20 inches thick)
Bt3--64 to 74 inches; reddish brown (5YR 5/4) sandy clay loam, reddish brown (5YR 4/4) moist; weak coarse subangular blocky structure; hard, friable; few distinct clay films on vertical ped surfaces; neutral; gradual smooth boundary. (6 to 24 inches thick)
Bt4--74 to 80 inches; yellowish red (5YR 5/6) sandy clay loam, reddish brown (5YR 5/4) moist; moderate coarse subangular blocky structure; very hard, firm; few distinct clay films on vertical ped surfaces; neutral.
TYPE LOCATION: Cottle County, Texas; 7.1 miles north of courthouse in Paducah on U.S. Highway 83 and 62, 0.45 mile west on Farm Road 3256, 790 feet north in idle cropland. (Latitude: 34N, 07, 13; Longitude: 100W, 18, 20) USGS Paducah Quad. 1929 Datum.
RANGE IN CHARACTERISTICS: Thickness of solum is more than 80 inches.
The A horizon has hue of 5YR to 10YR, value of 5 to 6, and chroma of 3 to 6. The texture is fine sand or sand. Reaction is slightly acid or neutral.
The AB horizon, where present, has hue of 5YR or 7.5YR, value 4 or 5, and chroma 4. Texture is sandy loam, fine sandy loam, or sandy clay loam.
The Bt horizons have hue of 2.5YR to 7.5YR, value of 4 to 6, and chroma of 4 to 8. Texture is dominantly sandy clay loam with clay content of 19 to 35 percent. Reaction ranges from slightly acid to slightly alkaline.
COMPETING SERIES: This is the Nobscot series of the same family. Similar soils are Brownfield, Delwin, Devol, Grandfield, Heaton, Miles, Silstid, and Springer series. Nobscot soils have Bt horizons with less than 18 percent clay. Delwin, Devol, Grandfield, Miles, and Springer soils have sandy surface layers less than 20 inches thick. Brownfield soils are dry in some part of the moisture control section more than half the time. Heaton and Silstid soils have siliceous mineralogy.
GEOGRAPHIC SETTING: The Heatly soils are on nearly level to undulating plains. Slopes are mostly 0 to 2 percent, but range to 5 percent. The soils formed in loamy to sandy materials apparently of eolian origin of Pleistocene age. Mean annual precipitation is about 20 to 26 inches. Mean annual air temperature ia about 59 to 68 degrees F. Thornthwaite annual P-E index is about 31 to 40. Frost free days range from 180 to 230 and the elevation ranges from 1,400 to 2,200 feet.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the competing Delwin, Devol, Grandfield, and Nobscot soils. Devol and Nobscot soils are on the same to slightly higher landscape positions. Delwin and Grandfield soil are lower in the landscape.
DRAINAGE AND PERMEABILITY: Well drained; most rainfall is absorbed and surface runoff is negligible on slopes of 0 to 1 percent and low on 1 to 5 percent slopes. Permeability is moderate.
USE AND VEGETATION: Mainly used for rangeland. Grasses are tall and midgrasses, mainly bluestem and giant dropseed; woody plants are Havard Oak and some widely separated yucca and sandsage. Some areas are cropped to cotton, grain sorghum, and peanuts.
DISTRIBUTION AND EXTENT: Central Rolling Red Plains of northwestern Texas and western Oklahoma (MLRA 78B, 78C). The series is of moderate extent.
MLRA OFFICE RESPONSIBLE: Temple, Texas
SERIES ESTABLISHED: Cottle County, Texas; 1970.
REMARKS: These soils were formerly included in the Brownfield series.
Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - the A horizon from 0 to 28 inches.
Arenic feature - thickness of fine sand surface layer is 28 inches.
Argillic horizon - the Bt horizons from 28 to 80 inches.
Paleustalf feature - the clay content of the Bt horizon does not decrease more than 20 percent and the chroma is 5 at 60 inches.
Other- the solum contains no secondary carbonates.
Range Site: Deep Sand Savannah - 078CY017OK
ADDITIONAL DATA: none
TAXONOMIC VERSION: Soil Taxonomy, Second Edition, 1999.