LOCATION SLAPOUT OK+KS TX
Established Series
SLM-TGM-JTB
10/2018
SLAPOUT SERIES
The Slapout series consists of very deep, well drained, moderately permeable soils that formed in loamy calcareous colluvial sediments from the Ash Hollow or Kimball Members, Ogallala Formation of Miocene-Pliocene age. These soils occur on very gently sloping to moderately steep hillslopes and colluvial aprons in the Southern High Plains, Breaks (MLRA 77E). Slope ranges from 1 to 20 percent. Mean annual precipitation is about 533 mm (21 in) and mean annual air temperature is about 15.0 degrees C (59 degrees F).
TAXONOMIC CLASS: Coarse-loamy, mixed, superactive, thermic Aridic Calciustepts
TYPICAL PEDON: Slapout loam - on a 6 percent convex backslope of side slope in native rangeland at an elevation of 811 m (2660 ft).
(Colors are for dry soil unless otherwise stated.)
Ak--0 to 16 cm (0 to 6 in); grayish brown (10YR 5/2) loam, dark grayish brown (10YR 4/2), moist; moderate fine and medium granular structure; hard, friable; common fine, few medium and many very fine roots; many fine and few medium pores; carbonate, finely disseminated throughout; common fine and common medium carbonate masses in matrix; 1 percent 2 to 5 mm and 1 percent 5 to 20 mm strongly cemented caliche fragments; strongly effervescent (21 percent calcium carbonate equivalent); slightly alkaline (pH 7.8); clear smooth boundary. Thickness is 10 to 30 cm (4 to 12 in)
Bk1--16 to 37 cm (6 to 14.5 in); light gray (10YR 7/2) loam, pale brown (10YR 6/3), moist; weak coarse prismatic parting to weak medium subangular blocky parting to weak fine subangular blocky structure; slightly hard, very friable; common fine and few medium roots; common fine and few coarse pores; finely disseminated carbonates throughout; common fine and many medium carbonate masses, and few medium very strongly cemented carbonate nodules in matrix; 3 percent 2 to 5 mm and 1 percent 5 to 20 mm strongly cemented caliche fragments; violently effervescent (39 percent calcium carbonate equivalent); moderately alkaline (pH 8.0); diffuse smooth boundary.
Bk2--37 to 67 cm (14.5 to 26.5 in); pinkish gray (7.5YR 7/2) loam, light brown (7.5YR 6/3), moist; weak coarse prismatic parting to moderate medium subangular blocky structure; soft, very friable; common fine and few medium roots; few fine and few medium pores; few worm casts; finely disseminated carbonates throughout; common fine and many medium carbonate masses, and few medium very strongly cemented carbonate nodules in matrix; 1 percent 2 to 5 mm and 1 percent 5 to 20 mm strongly cemented caliche fragments; violently effervescent (37 percent calcium carbonate equivalent); moderately alkaline (pH 8.2); clear smooth boundary. Combined thickness of Bk horizons is 33 to 140 cm (13 to 55 in)
BCk1--67 to 109 cm (26.5 to 43 in); pinkish white (7.5YR 8/2) gravelly fine sandy loam, light brown (7.5YR 6/4), moist; weak medium subangular blocky structure; soft, very friable; few fine and few medium roots; few fine pores; few worm casts; finely disseminated carbonates throughout; few fine threadlike carbonate masses on surfaces along root channels; many medium and few coarse carbonate masses, and few medium very strongly cemented carbonate nodules in matrix; 2 percent 2 to 5 mm, 12 percent 5 to 20 mm, and 1 percent 75 to 250 mm strongly cemented caliche fragments; violently effervescent (28 percent calcium carbonate equivalent); moderately alkaline (pH 8.3); clear wavy boundary.
BCk2--109 to 170 cm (43 to 67 in); pink (7.5YR 8/3) gravelly very fine sandy loam, light brown (7.5YR 6/4), moist; weak coarse subangular blocky structure; soft, very friable; few fine and few medium roots; few fine pores; finely disseminated carbonates throughout; common fine and few medium threadlike carbonate masses on surfaces along root channels; few fine and few medium carbonate masses, and few fine strongly cemented carbonate nodules in matrix; 1 percent 2 to 20 mm and 12 percent 20 to 75 mm strongly cemented caliche fragments, and 12 percent 75 to 250 mm moderately cemented caliche parafragments; 3 percent 2 to 5 mm well rounded indurated quartzite fragments; violently effervescent (16 percent calcium carbonate equivalent); moderately alkaline (pH 8.3); diffuse wavy boundary. Combined thickness of the BCk horizons is 40 to 116 cm thick (16 to 46 in)
Ck--170 to 220 cm (67 to 86.5 in); pink (7.5YR 8/3) very paracobbly loamy sand, pink (7.5YR 7/4), moist; massive; soft, very friable; few coarse roots; few fine pores; many distinct carbonate coats on surface of paracobbles; finely disseminated carbonates throughout; few medium carbonate masses in matrix; 1 percent 2 to 5 mm, 1 percent 5 to 20 mm, and 12 percent 20 to 75 mm strongly cemented caliche fragments, and 20 percent 75 to 250 mm moderately cemented caliche parafragments; 3 percent 2 to 5 mm well rounded indurated quartzite fragments; violently effervescent (15 percent calcium carbonate equivalent); moderately alkaline (pH 8.3).
TYPE LOCATION:
Beaver County, Oklahoma; From the intersection of Highway 412 and Highway 23 at Elmwood, 6 miles south and 9 miles east, then 1600 ft (487 m) south and 1480 ft (452 m) east of the northwest corner of Section 22, Township 1N, Range 25E (Cimarron meridian).
USGS topographic quadrangle: Clear Lake SE, Oklahoma
Latitude: 36 degrees 32 minutes 20.20 seconds N
Longitude: 100 degrees 21 minutes 21.30 seconds W
Datum: WGS84
Decimal Degrees
Std Latitude: 36.5389442
Std Longitude: -100.3559189
UTM Northing: 4044583
UTM Easting: 378628
UTM zone: 14S
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 220 days, cumulative, in normal years.
Solum thickness: 102 to 203 cm (40 to 80 in)
Depth to identifiable secondary carbonates: 0 to 15 cm (0 to 6 in)
Depth to calcic horizon: 10 to 61 cm (4 to 24 in)
Surface Fragments: 0 to 5 percent; fine to coarse gravel; carbonate nodules and concretions, calcrete (caliche) fragments
Particle-size control section (weighted average):
Total clay content: 7 to 30 percent
Carbonate clay content: 4 to 15 percent
Silicate clay content: less than 18 percent
Calcium carbonate equivalent: 15 to 40 percent
Coarse fragments: 2 to 20 percent; fine to coarse gravel; calcrete (caliche) fragments
A horizons:
Hue: 7.5YR or 10YR
Value: 4 to 6, 3 to 5 moist
Chroma: 2 to 6
Texture: sandy loam, fine sandy loam, or loam
Total clay content: 7 to 18 percent
Carbonate clay content: 1 to 7 percent
Coarse fragments: 0 to 10 percent; fine to coarse gravel; calcrete (caliche) fragments, carbonate nodules and concretions
Identifiable calcium carbonate: 1 to 5 percent; fine to medium; masses, nodules
Calcium carbonate equivalent: 5 to 25 percent
Effervescence: slight to strong
Reaction (pH): slightly alkaline to moderately alkaline (7.4-8.4)
Bk horizons:
Hue: 7.5YR or 10YR
Value: 5 to 8, 4 to 7 moist
Chroma: 2 to 6
Texture: sandy loam, fine sandy loam, sandy clay loam, loam, silt loam
Total clay content: 7 to 30 percent
Carbonate clay content: 4 to 15 percent
Coarse fragments: 1 to 10 percent; fine to coarse gravel; calcrete (caliche) fragments, carbonate nodules and concretions
Identifiable calcium carbonate: 5 to 50 percent; fine to coarse; masses, nodules, concretions, coatings, and finely disseminated carbonate
Calcium carbonate equivalent: 15 to 40 percent
Effervescence: strong to violent
Reaction (pH): slightly alkaline to moderately alkaline (7.4-8.4)
BCk and Ck horizons (where present):
Hue: 7.5YR or 10YR
Value: 5 to 8, 4 to 7 moist
Chroma: 2 to 6
Texture: loamy sand, sandy loam, fine sandy loam, very fine sandy loam, loam, and their gravelly and paracobbly counterparts
Total clay content: 3 to 18 percent
Carbonate clay content: 2 to 12 percent
Coarse fragments: 5 to 55 percent; fine to coarse gravel, paracobbles; calcrete (caliche) fragments, carbonate nodules and concretions
Identifiable calcium carbonate: 5 to 50 percent; fine to extremely coarse; masses, nodules, concretions, coatings, and finely disseminated carbonate
Calcium carbonate equivalent: 10 to 40 percent
Effervescence: strong to violent
Reaction (pH): slightly alkaline to moderately alkaline (7.4-8.4)
COMPETING SERIES:
These are the
Alopark and
Gomez series in the same family. Similar soils are the
Veal series.
Alopark soils: have fragments consisting mainly of quartzite and formed in the
Laverne member of the Ogallala Formation
Gomez soils: formed in eolian and fluvial sediments of the
Blackwater Draw
Formation of Pleistocene age and occur in the Southern High plains, Southern part (77C)
Veal soils: have carbonatic mineralogy
GEOGRAPHIC SETTING:
Parent Material: Calcareous, loamy colluvial sediments derived from the Ash Hollow and Kimball Members of the Ogallala Formation of Mio-Pliocene age.
Landscape: Dissected high plains
Landform: Hillslopes and colluvial aprons
Slope: 1 to 20 percent
Precipitation Pattern: These soils are intermittently moist in September through November and March through June. July through August and December through February are the driest months.
Mean annual precipitation: 457 to 635 mm (18 to 25 in)
Thornthwaite annual P-E Index: 25 to 36
Mean annual air temperature: 13.9 to 16.7 degrees C (57 to 62 degrees F)
Frost-free period: 180 to 215 days
Elevation: 640.1 to 1219.2 m (2,100 to 4,000 ft)
GEOGRAPHICALLY ASSOCIATED SOILS:
These are the
Alopark,
Catesby,
Laverne,
Mansic,
Mocane,
Ochiltree,
Oklark, and
Paloduro series.
Alopark soils: occur on lower positions associated with the
Laverne Member of Ogallala
Formation, have lower calcium carbonate equivalents in the calcic horizons, and grade to loamy or sandy subsoils with mainly siliceous gravel
Catesby soils: have a mollic epipedon and occur on similar positions and parent materials
Laverne and
Ochiltree soils: have a loamy-skeletal particle-size class, a petrocalcic horizon within 50 cm (20 in) of the soil surface, and occur on similar positions and parent materials
Mansic soils: occur on lower positions associated with the
Laverne Member of Ogallala
Formation, have a mollic epipedon, and a fine-loamy particle-size class
Mocane soils: occur on lower positions associated with the
Laverne Member of Ogallala
Formation, have a sandy particle-size class, and solum thickness of less than 102 cm (40 in)
Oklark soils: occur on lower positions associated with the
Laverne Member of Ogallala
Formation, have a mollic epipedon, lower calcium carbonate equivalents in the calcic horizons, and grade to loamy or sandy subsoils with mainly siliceous gravel
Paloduro soils: have a mollic epipedon, a fine-loamy particle-size class, do not have a calcic horizon within 100 cm (40 in) of the soil surface, and occur on similar positions and parent materials
DRAINAGE AND PERMEABILITY:
Drainage class: well drained
Permeability class: moderate
Runoff class: low on 1 to 5 percent slopes and medium on 5 to 20 percent slopes
USE AND VEGETATION:
Major uses: mainly livestock grazing and limited crop production
Native vegetation: predominantly little bluestem, sideoats grama, blue grama, buffalograss, sand bluestem, purple threeawn, silver bluestem, and broom snakeweed. Yucca is the major woody species along with small amounts of sand sagebrush.
Ecological sites assigned to phases and components of this series are listed below. Current ecological site assignments are in Web Soil Survey. Components of this series include the following ecological sites: Limy Upland
DISTRIBUTION AND EXTENT:
General area: Oklahoma and Texas Panhandles, a few counties in Northwestern Oklahoma and Southwestern Kansas
Land Resource Region: H - Central Great Plains Winter Wheat and Range Region
MLRA 77E - Southern High Plains, Breaks
Extent: Moderate
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Temple, Texas
SERIES ESTABLISHED: 2018 - Lipscomb County, TX during the "MLRA 77E - Quanah (Paloduro, Veal, and Portales) soils and Paloduro loam and clay loam, 3 to 5 percent slopes" project. Proposed in 2007 during the extensive revision update of Beaver County, OK. The name of the series comes from a community in Beaver County, OK.
REMARKS:
These soils were formerly included in the Veal series.
Diagnostic horizons and features in this pedon are:
Particle-size control section: 25 to 100 cm (10 to 39.4_in)
Ochric epipedon: 0 to 16 cm (0 to 6 in) (A horizon)
Calcic horizon: 16 to 170 cm (6 to 67 in) (Bk and BCk horizons)
Identifiable secondary carbonates: 0 to 220 cm (0 to 86.5 in) (all horizons)
ADDITIONAL DATA:
KSSL data available: S2004OK007002 (TL-Beaver County, OK)
TAXONOMIC VERSION: Keys to Soil Taxonomy, Twelfth Edition, 2014
National Cooperative Soil Survey
U.S.A.