LOCATION MILES                   TX+OK

Established Series
Rev. HHB:EHT:RED:DDR
10/2014

MILES SERIES


The Miles series consists of very deep, well drained, moderately permeable soils that formed in loamy alluvial materials. These soils are on nearly level to moderately sloping terrace pediments on dissected plains. Slopes range from 0 to 8 percent. Mean annual precipitation is about 584 mm (23 in), and mean annual air temperature is about 62 degrees C (16.7 degrees F).

TAXONOMIC CLASS: Fine-loamy, mixed, superactive, thermic Typic Paleustalfs

TYPICAL PEDON: Miles fine sandy loam--pasture.
(Colors are for dry soil unless otherwise stated.)

A--0 to 25 cm (0 to 10 in); brown (7.5YR 4/2) fine sandy loam, dark brown (7.5YR 3/2) moist; weak fine granular structure; soft, friable; common fine roots; neutral; gradual smooth boundary. Thickness is 18 to 51 cm (7 to 20 inches thick)

BA--25 to 41 cm (10 to 16 in); reddish brown (5YR 4/4) sandy clay loam, dark reddish brown (5YR 3/4) moist; weak coarse prismatic structure parting to weak fine subangular blocky; hard, friable; few fine roots; few fine pores; neutral; gradual smooth boundary. Thickness is 0 to 20 cm (0 to 8 inches thick)

Bt--41 to 94 cm (16 to 37 in); yellowish red (5YR 5/6) sandy clay loam, yellowish red (5YR 4/6) moist; weak coarse prismatic structure parting to moderate medium subangular blocky; very hard, friable; few medium pores; few distinct clay films on peds; neutral in upper part, slightly alkaline in lower part; gradual smooth boundary. Thickness is 25 to 61 cm (10 to 24 inches thick)

Btk1--94 to 140 cm (37 to 55 in); yellowish red (5YR 5/6) sandy clay loam, yellowish red (5YR 4/6) moist; weak coarse prismatic structure parting to moderate medium subangular blocky; very hard, friable; few very fine pores; few distinct clay films; few masses and threads of calcium carbonate in lower part; slightly effervescent; moderately alkaline; gradual smooth boundary. Thickness is 20 to 76 cm (8 to 30 inches thick)

Btk2--140 to 178 cm (55 to 70 in); yellowish red (5YR 5/6) sandy clay loam, yellowish red (5YR 4/6) moist; weak coarse prismatic structure parting to weak medium subangular blocky; hard, friable; upper part has pockets of clean sand grains 2 to 5 mm in diameter in a matrix of bridged and coated sand grains; few films, threads, and masses of calcium carbonate; strongly effervescent; moderately alkaline; gradual smooth boundary. Thickness is 0 to 56 cm (0 to 22 inches thick)

Bk--178 to 203 cm (70 to 80 in); pink (5YR 7/4) sandy clay loam, light reddish brown (5YR 6/4) moist; weak coarse prismatic structure; friable; 5 to 10 percent by volume of , friable and slightly cemented masses of calcium carbonate; strongly effervescent; moderately alkaline; diffuse lower boundary. Thickness is 20 to 38 cm (8 to 15 inches thick)

C--203 to 229 cm (80 to 90 in); reddish yellow (5YR 7/6) fine sandy loam, reddish yellow (5YR 6/6) moist; structureless, massive; friable; porous; few masses and concretions of calcium carbonate; strongly effervescent; moderately alkaline.

TYPE LOCATION: Kent County, Texas; 1 mile north of Jayton on Texas Highway 70; in pasture 100 yards northwest of intersection of Texas Highway 70 and Farm Market Road 1228.
USGS topographic quadrangle: Jayton North, Texas;
Latitude: 33 degrees, 15 minutes, 31.35 seconds N;
Longitude: 100 degrees, 34 minutes, 35.32 seconds W;
Datum: WGS84.
UTM Zone 14, UTM Easting 353156 m, UTM Northing 3681076 m.

RANGE IN CHARACTERISTICS:
Thickness of the solum ranges from 60 inches to more than 80 inches.
Depth to secondary calcium carbonate: 94 to 152 cm (37 to 60 in)
Depth to calcic horizon (where present): 152 to 203 cm (60 to 80 in)

A Horizon
Hue: 5YR to 10YR
Value: 4 to 6
Chroma: 3 to 6
Texture: fine sandy loam or loamy fine sand
Clay content: 3 to 18 percent
Sand content: 60 to 90 percent
Organic matter content: less than 1 percent
Effervescence: none
Reaction(pH): slightly acid to slightly alkaline (6.1 to 7.8)

BA Horizon (where present)
Texture: loam to sandy clay loam

Bt Horizon
Hue: 2.5YR to 5YR
Value: 4 to 5
Chroma: 4 to 6
Texture: sandy clay loam, clay loam, loam
Clay content: 20 to 35 percent; A few pedons have a slight decrease in clay content from the maximum within a depth of 60 inches. These pedons have skeletans and stripped sand grains in the zone of clay decrease.
Sand content: 30 to 65 percent
Rock fragments: 0 to 3 percent; fine or medium mixed gravel that are mostly siliceous.
Calcium carbonate equivalent: 0 to 3 percent
Effervescence: none to slight
Reaction(pH): neutral to slightly alkaline (6.6 to 7.8)

Btk Horizon
Hue: 2.5YR to 5YR
Value: 4 to 5
Chroma: 4 to 6
Texture: sandy clay loam, clay loam, loam
Clay content: 20 to 35 percent
Sand content: 30 to 65 percent
Rock fragments: 0 to 10 percent; fine or medium gravel that are mixed siliceous or carbonate
Identifiable secondary carbonate: few to common; films, masses, nodules, or concretions
Calcium carbonate equivalent: 1 to 10 percent
Effervescence: slight to strong
Reaction(pH): neutral to moderately alkaline (6.6 to 8.4)

Bk Horizon (where present)
Hue: 2.5YR to 5YR
Value: 5 to 7
Chroma: 4 to 6
Texture: sandy clay loam, clay loam, loam
Clay content: 20 to 35 percent
Sand content: 30 to 65 percent
Rock fragments: 0 to 15 percent; fine or medium gravel that are mixed siliceous or carbonate
Identifiable secondary carbonate: common to many; films, masses, nodules, or concretions
Calcium carbonate equivalent: 10 to 25 percent
Effervescence: strong to violent
Reaction(pH): slightly alkaline to moderately alkaline (7.4 to 8.4)

BC or C Horizons
Hue: 2.5YR to 7.5YR
Value: 5 to 7
Chroma: 4 to 6
Texture: loamy sand to sandy clay loam
Clay content: 5 to 35 percent
Sand content: 40 to 85 percent
Rock fragments: 0 to 15 percent; fine or medium gravel that are mixed siliceous or carbonate
Identifiable secondary carbonate: none to common; films, masses, nodules, or concretions
Calcium carbonate equivalent: 5 to 15 percent
Effervescence: slight to violent
Reaction(pH): slightly alkaline to moderately alkaline (7.4 to 8.4)

COMPETING SERIES: There are no series in the same family. Similar soils are the Ady, Arnett, Cobb, Decobb, Delwin, Grandfield, Grandmore, Hamby, McKnight, Menard, and Rochelle series.
Ady and Grandfield: These soils have a decrease in clay content from the maximum by more than 20 percent within a depth of 152 cm (60 in).
Arnett: These soils have more than 15 percent coarse fragments in the lower part of the solum.
Cobb: These soils are moderately deep to a paralithic contact with sandstone bedrock of the San Angelo formation.
Decobb: These soils are 152 to 203 cm (60 to 80 in)deep to soft sandstone bedrock of the San Angelo formation and have a decrease in clay content from the maximum by more than 20 percent within a depth of 152 cm (60 in).
Delwin: These soils do not have carbonates within a depth of 152 cm (60 in).
Grandmore: These soils have a lithologic discontinuity with a clay increase and a perched water table within a depth of 152 cm (60 in).
Hamby: These soils average more than 35 percent clay in the partile-size control section.
McKnight: These soils are moderately deep to a lithological discontinuity of weathered Permian claystone and sandstone.
Menard: These soils have a decrease in clay content from the maximum by more than 20 percent within a depth of 152 cm (60 in).
Rochelle: These soils are less than 152 cm (60 in) deep to a gravelly substratum with more than 35 percent fragments.

GEOGRAPHIC SETTING:
Parent material: alluvium of Pleistocene or Pliocene age
Landscape: dissected plains
Landform: terraces
Slope: 0 to 8 percent
Mean annual precipitation: 457 to 711 mm (18 to 28 in)
Thornthwaite P-E Index: 30 to 40
Mean annual air temperature: 13.9 to 18.3 degrees C (57 to 65 degrees F)
Frost-free period: 200 to 240 days
Elevation: 320 to 945 m (1,050 to 3,100 ft)

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Abilene, Bukreek, Delwin, Devol, Frankirk, Grandfield, Hamby, Heatly, Sagerton, Springer, and Wichita series.
Abilene, Bukreek, Frankirk, and Sagerton: These soils have a mollic epipedon.
Devol and Springer: These soils have less than 18 percent clay in the particle-size control section.
Heatly: These soils have a sandy surface more than 51 cm (20 in) thick).
Wichita: These soils average more than 35 percent clay in the particle-size control section.

DRAINAGE AND PERMEABILITY: Well drained. Permeability is moderate. Runoff is negligible on 0 to 1 percent slopes, low on 1 to 5 percent slopes and medium on 5 to 8 percent slopes.

USE AND VEGETATION: Mainly cultivated; cotton, wheat, and grain sorghum are the principle crops. Native vegetation on the loamy fine sands is little bluestem and switchgrass; fine sandy loam surfaces include sideoats and blue grama. Mesquite, lotebush, catclaw, and sand sagebrush invade some areas.

DISTRIBUTION AND EXTENT: The Central Rolling Red Plains (MLRA 78B, 78C) and Rolling Limestone Prairies (MLRA 78D) of Texas and Oklahoma. The series is extensive.

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

SERIES ESTABLISHED: Reconnaissance Soil Survey of South Central Texas; 1913

REMARKS:
Edited 10/2014 (RFG-ROG): Changed to tabular format. Added metric measurements. Updated competing series, geographic setting, and associated soils sections.

Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - 0 to 16 inches. (A and BA horizons)
Argillic horizon - 16 to 70 inches. (Bt and Btk horizons.)
Pale feature - clay does not decrease significantly within 60 inches.

ADDITIONAL DATA: NSSL data; 57TX263090 Kent Co. TX; 57TX275090 Knox Co. TX; 57TX415090 Scurry Co. TX; 76TX275001 Knox Co. TX; S05TX-169-003 Garza Co. TX

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


National Cooperative Soil Survey
U.S.A.