LOCATION TEXLINE TX+NM OK

Established Series
Rev. TCB-RM
03/2016

TEXLINE SERIES

The Texline series consists of very deep, well drained, moderately permeable soils that formed in calcareous, loamy eolian sediments of Pleistocene age. These soils are on nearly level to gently sloping eolian plains. Slopes range from 0 to 5 percent. The mean annual precipitation is 496 mm (19.5 in) and the mean annual temperature is 13 degrees C (55 degree F).

TAXONOMIC CLASS: Fine-loamy, mixed, superactive, mesic Calcidic Paleustolls

TYPICAL PEDON: Texline loam, on a nearly level plain, 0.5 percent slope in cropland. (Colors are for dry soil unless otherwise stated.)

Ap--0 to 25 cm (0 to 10 in); brown (10YR 4/3) loam, dark brown (10YR 3/3) moist; weak fine subangular blocky and granular structure; slightly hard, friable; many fine roots and pores; strongly effervescent; moderately alkaline; clear smooth boundary. (20 to 46 cm [8 to 18 in] thick)

Bt--25 to 66 cm (10 to 26 in); yellowish brown (10YR 5/4) clay loam, dark yellowish brown (10YR 4/4) moist; weak coarse prismatic structure parting to weak fine subangular blocky; slightly hard, friable; common fine roots, many fine pores; common distinct clay films on ped surfaces; strongly effervescent; moderately alkaline; gradual wavy boundary. (15 to 46 cm [6 to 18 in] thick)

Btk--66 to 97 cm (26 to 38 in); reddish yellow (7.5YR 6/6) clay loam, strong brown (7.5YR 5/6) moist; weak coarse prismatic structure parting to weak fine subangular blocky; hard, friable; few fine roots and pores; few faint clay films on ped surfaces; about 25 percent calcium carbonate by volume as masses and nodules; violently effervescent; moderately alkaline; gradual smooth boundary. (25 to 76 cm [10 to 30 in] thick)

2Bt2--97 to 132 cm (38 to 52 in); brown (7.5YR 5/4) sandy clay loam, brown (7.5YR 4/4) moist; weak coarse prismatic structure parting to weak medium subangular blocky; hard, friable; few fine roots and pores; common distinct clay films on ped surfaces; strongly effervescent; moderately alkaline; gradual smooth boundary. (20 to 41 cm [8 to 16 in] thick)

2Bt3--132 to 152 cm (52 to 60 in); brown (7.5YR 5/4) sandy clay loam, brown (7.5YR 4/4) moist; weak coarse prismatic structure parting to weak medium subangular blocky; hard, friable; few fine roots and pores; common distinct clay films on ped surfaces; strongly effervescent; moderately alkaline; clear smooth boundary. (0 to 38 cm [0 to 15 in] thick)

2Bt4--152 to 163 cm (60 to 64 in); reddish yellow (7.5YR 6/6) sandy clay loam, strong brown (7.5YR 5/6) moist; weak coarse prismatic structure parting to weak medium subangular blocky; slightly hard, friable; strongly effervescent; moderately alkaline; clear smooth boundary. (0 to 20 cm [0 to 8 in] thick)

2Bt5--163 to 216 cm (64 to 85 in); brown (7.5YR 5/4) sandy clay loam, brown (7.5YR 4/4) moist; weak coarse prismatic structure parting to weak medium subangular blocky and granular; slightly hard, firm; strongly effervescent; moderately alkaline.

TYPE LOCATION: Dallam County, Texas; in a cultivated field 30 m (100 ft.) east of highway right-of-way, 12 kilometers (7.5 miles) south of Conlen, Texas via Farm Road 807. Latitude: 36 degrees, 07 minutes, 29.6 seconds N; 102 degrees, 14 minutes, 21.6 seconds W; Exum, Texas USGS quad; NAD 83.

RANGE IN CHARACTERISTICS:
Soil moisture: An ustic moisture regime bordering on aridic. The soil moisture control section is dry in some or all parts for more than 180 but less than 205 days, cumulative, in normal years. July through August and December through February are the driest months. These soils are intermittently moist in September through November and March through June.
Mean annual soil temperature: 13 to 15 degrees C
Depth to secondary carbonates: 13 to 50 cm (5 to 20 in).
Depth to calcic horizon: 40 to 76 cm (16 to 30 in).
Thickness of the mollic epipedon: 20 to 50 cm (8 to 20 in).
Solum thickness: More than 203 cm (203 in).
Particle-size control section: 18 to 35 percent silicate clay.

Ap horizon:
Hue: 7.5YR or 10YR
Value: 3 or 4 dry, 2 or 3 moist
Chroma: 2 or 3
Texture: loam, clay loam, or fine sandy loam
Effervescence: very slight to violent
Reaction: moderately alkaline
Note: A few pedons are noneffervescent in the upper 15 cm (6 in).

Bt horizon:
Hue: 7.5YR or 10YR
Value: 4 to 6 dry, 3 to 5 moist
Chroma: 3 or 4
Texture: clay loam or loam
Visible secondary calcium carbonate: 2 percent or less by volume as films, filaments, and finely disseminated carbonates.
Effervescence: slight or strong
Reaction: moderately alkaline

Btk horizons:
Hue: 7.5YR or 10YR
Value: 5 to 7 dry, 4 to 6 moist
Chroma: 4 to 6
Texture: clay loam, silty clay loam, or loam
Visible secondary calcium carbonate: 15 to 35 percent by volume as films, filaments, masses, nodules, and finely disseminated carbonates.
Effervescence: strong or violent
Reaction: moderately alkaline

2Bt horizons:
Hue: 5YR or 7.5YR
Value: 4 to 6 dry, 3 to 5 moist
Chroma: 4 to 8
Texture: sandy clay loam, clay loam, silty clay loam, or loam
Visible secondary calcium carbonate: 5 to 40 percent by volume as films, filaments, masses, nodules, and finely disseminated carbonates.
Effervescence: strong or violent
Reaction: moderately or strongly alkaline

Btkk horizon (where present):
Hue: 7.5YR or 10YR
Value: 6 to 8 dry, 5 to 7 moist
Chroma: 2 to 4
Texture: sandy clay loam, clay loam, silty clay loam, or clay
Visible secondary calcium carbonate: 50 to 70 percent by volume as masses, nodules, and finely disseminated carbonates.
Effervescence: violent
Reaction: moderately or strongly alkaline

COMPETING SERIES: There are no other series in this family. Similar soils include the Canina, Conlen, Hugoton, Oslo, Spurlock, Sunray, and Vorhees series.
Canina soils: have an ochric epipedon and fine-silty particle size class.
Conlen soils: have carbonatic mineralogy and coarse-loamy particle size class.
Hugoton soils: have fine-silty particle size class and do not have a calcic horizon.
Oslo soils: have fine-silty particle size class; in addition the calcic horizon is deeper than 60 cm.
Spurlock and Vorhees soils: have coarse-loamy particle size class.
Sunray soils: have fine-silty particle size class.

GEOGRAPHIC SETTING:
Parent material: Loamy, calcareous eolian sediments of Pleistocene age.
Landform: eolian plain
Slopes: 0 to 5 percent
Elevation: 1,128 to 1,707 m (3,700 to 5,600 ft)
Mean annual air temperature: 11 to 14 degrees C (52 to 57 degrees F)
Mean annual precipitation: 381 to 432 mm (15 to 17 in)
Frost-free period: 165 to 185 days
Thornthwaite annual P-E Index Values: 25 to 36

GEOGRAPHICALLY ASSOCIATED SOILS:
These are the similar Conlen, Oslo, Spurlock, and Sunray soils and the Capps, Dallam, Darrouzett, Dumas, Gruver, Kerrick, Plack, and Sherm soils.
Conlen, Spurlock, and Sunray soils: are on slightly lower landscape positions.

Capps soils: are on lower landscape positions and do not have argillic horizons.
Dallam soils: are on higher landscape positions and have an ochric epipedon.
Darrouzett, Gruver, and Sherm soils are on similar landscape positions and have fine particle size class.
Dumas soils: are on similar landscape positions and a calcic horizon below 60 cm.
Kerrick and Plack soils: are on slightly lower landscape positions and have a petrocalcic horizon.
Oslo soils: are on similar landscape positions.

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

USE AND VEGETATION: Mainly used for cropland. Principal crops are corn, grain sorghum, and winter wheat. A considerable amount of acreage is irrigated. Climax vegetation is dominantly short grasses with a few mid grasses and includes blue grama and buffalograss, with lesser amounts of vine-mesquite, western wheatgrass, sideoats grama, galleta, or tobosa, silver bluestem, wild alfalfa, and prairie clover. This soil has been correlated to the Limey Upland (R-077AY006TX) ecological site in MLRA-77A.

DISTRIBUTION AND EXTENT: The High Plains of Texas north of the Canadian River, and possibly in adjoining areas of Oklahoma and New Mexico. MLRA 77A. The series is of moderate extent.

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

SERIES ESTABLISHED: Dallam County, Texas; 1970.

REMARKS: These soils were formerly included in the Mansker and Portales series. Series revised during the MLRA-77 Update Soil Survey; 2007.

Diagnostic horizons and features recognized in this pedon are:
Mollic epipedon: 0 to 25 cm (0 to 10 in). (Ap horizon)
Argillic horizon: 25 to 216 cm (10 to 85 in). (Bt, Btk, 2Bt horizons)
Calcic horizon: 66 to 97 cm (26 to 38 in). (Btk horizon)

ADDITIONAL DATA: None

Taxonomic Version: Keys to Soil Taxonomy, Twelfth Edition, 2014.

National Cooperative Soil Survey
U.S.A.