LOCATION DREYFOOS                OK+KS TX

Tentative Series
SLM-CPH
03/2017

DREYFOOS SERIES

The Dreyfoos series consists of very deep, excessively drained, rapidly permeable soils that formed in sandy eolian deposits of Holocene age. These soils are on undulating to hummocky sand dunes emplaced on floodplains, stream terraces, hillslopes, and colluvial aprons of the Southern High Plains, Breaks (MLRA 77E). The slope ranges from 3 to 45 percent. Mean annual precipitation is about 530 mm (21 in), and mean annual air temperature is about 15 degrees C (59 degrees F).

TAXONOMIC CLASS: Mixed, thermic Aridic Ustipsamments

TYPICAL PEDON: Dreyfoos sand - on a convex, 13 percent convex slope in native rangeland at approximately 756 m (2480 ft) elevation. (Colors are for dry soil unless otherwise stated.)

A--0 to 8 cm (0 to 3 in); light yellowish brown (10YR 6/4) sand, yellowish brown (10YR 5/4), moist; weak fine granular structure parting to structureless single grain; loose, loose moist; common fine, common medium, and common coarse roots throughout; noneffervescent; neutral, pH 6.6; gradual smooth boundary. (10 to 28 cm thick [4 to 11 in])

AC--8 to 20 cm (3 to 8 in); yellowish brown (10YR 5/4) sand, dark yellowish brown (10YR 4/4), moist; weak coarse subangular blocky structure parting to structureless single grain; loose, loose; common very fine, common fine, and common medium roots throughout; noneffervescent; neutral, pH 6.9; gradual smooth boundary. (0 to 30 cm thick [0 to 12 in])

C1--20 to 85 cm (8 to 34 in); light yellowish brown (10YR 6/4) sand, yellowish brown (10YR 5/4), moist; structureless single grain; loose, loose; common medium and common coarse roots throughout; noneffervescent; slightly alkaline, pH 7.4; gradual smooth boundary. (Combined thickness of the C horizons: 155 to 188 cm [61 to 74 in])

C2--85 to 203 cm (34 to 80 in); very pale brown (10YR 7/4) sand, light yellowish brown (10YR 6/4), moist; structureless single grain; loose, loose; noneffervescent; moderately alkaline, pH 8.1

TYPE LOCATION: Beaver County, Oklahoma; from the south side of Beaver, 8 miles west, 1 mile south, 2 miles west, and 3 miles north; then 4050 ft (1234 m) east and 1250 ft (381 m) south of the northwest corner of Section 9, Township 4N, Range 22E (Cimarron meridian).

USGS topographic quadrangle: Floris, Oklahoma
Latitude: 36 degrees 49 minutes 49.40 seconds N
Longitude: 100 degrees 41 minutes 21.98 seconds W
Datum WGS84

Decimal Degrees
Latitude: 36.8303871
Longitude: -100.6894379

UTM Northing: 4077389
UTM Easting: 349341
UTM zone 14

RANGE IN CHARACTERISTICS:
Solum thickness: 10 to 89 cm (4 to 35 in)
Thickness of ochric epipedon: 10 to 20 cm (4 to 8 in)

Particle-size control section (weighted average):
Section range: 25 to 100 cm (10 to 39 in)
Silicate Clay: 1 to 8 percent
Coarse fragments: No gravels or other coarse fragments within the profile

A horizon:
Hue: 7.5YR or 10YR
Value: 5 to 7, 4 to 6 most
Chroma: 2 to 4 moist or dry
Texture: loamy fine sand, fine sand, sand
Coarse fragments: none
Identifiable calcium carbonate: none
Calcium carbonate equivalent: 0 percent
Effervescence: none to very slight
Reaction (pH): slightly acid to neutral (6.1-7.3)

AC horizon (where present):
Hue: 7.5YR or 10YR
Value: 5 to 8, 4 to 7 moist
Chroma: 3 to 6 moist or dry
Texture: loamy fine sand, loamy sand, or sand
Coarse fragments: none
Identifiable calcium carbonate: none
Calcium carbonate equivalent: 0 percent
Effervescence: none to slight
Reaction (pH): neutral to slightly alkaline (6.6-7.8)

C horizons and Ck horizons (where present):
Hue: 7.5YR or 10YR
Value: 5 to 8, 4 to 7 moist
Chroma: 3 to 6 moist or dry
Texture: sand, fine sand, loamy sand, or loamy fine sand
Coarse fragments: none
Identifiable calcium carbonate: amount-0 to 1 percent; kind-finely disseminated carbonate
Calcium carbonate equivalent: 0 to 1 percent; finely disseminated carbonate
Effervescence: none to slight
Reaction (pH): neutral to moderately alkaline (6.6-8.4)

COMPETING SERIES: These are the Likes(TX), Milsand(TX), and Nutivoli(TX) soils. Similar series in the geographic area include the Tivoli(OK) and Jester(OK) soils.
Likes soils: formed in sandy colluvium and alluvium, and have coarse fragments throughout the soil profile
Milsand soils: formed in sandy alluvial and eolian sediments, and are dry in the moisture control section for longer periods
Nutivoli soils: are dry in the moisture control section for longer periods
Tivoli and Jester soils: are moist in the control section for longer periods

GEOGRAPHIC SETTING:
Parent Material: Eolian sands
Landscapes: alluvial plain remnant, river valley
Landform: Dunes emplaced on dune fields, alluvial fans, colluvial aprons, stream terraces, and floodplains
Slope: 1 to 45 percent
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. 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 air temperature: 14 to 16 degrees C (57 to 61 degrees F)
Mean annual precipitation: 381 to 660 mm (15 to 26 in)
Frost-free period: 180 to 210 days
Elevation: 600 to 1500 m (1968 to 4921 ft)
Thornthwaite annual P-E Index: 25 to 36

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Alopark(T), Alowood(T), Duckpond(T), Gilhula(T), Guadalupe, Mansic, Oklark, Persimmon(T), Shalowood(T), Sweetwater, Touzalin(T), Wespur(T), and Woods series.

Alopark, Mansic, Oklark, and Woods soils occur on lower landscapes and are formed in Laverne ( Valentine) Member, Ogallala Formation.
Alopark soils: have a coarse-loamy particle-size class, and a calcic horizon within 100 cm (40 in) of the soil surface
Mansic soils: have a mollic epipedon, a fine-loamy particle-size class, and a calcic horizon within 100 cm (40 in) of the soil surface
Oklark soils: have a mollic epipedon, a coarse-loamy particle-size class, and a calcic horizon within 100 cm (40 in) of the soil surface
Woods soils: have a mollic epipedon, a fine particle-size class, and slickensides within 100 cm (40 in) of the soil surface

Duckpond, Gilhula, Guadalupe, Persimmon, Sweetwater, Touzalin, and Wespur soils occur on lower floodplain positions.
Duckpond soils: have a mollic epipedon more than 50 cm (20 in) thick, and a fine-silty particle-size class
Gilhula soils: have a mollic epipedon, and a coarse-loamy particle-size class
Guadalupe soils: have a coarse-loamy particle-size class
Persimmon soils: have a coarse-loamy particle-size class, and seasonal endosaturation within 100 cm (40 in) of the soil surface
Sweetwater soils: have a mollic epipedon, strongly contrasting fine-loamy over sandy particle-size class, and endosaturation within 100 cm (40 in) of the soil surface
Touzalin soils: have seasonal endosaturation within 100 cm (40 in) of the soil surface
Wespur soils: have a mollic epipedon, and a fine-loamy particle-size class

DRAINAGE AND PERMEABILITY:
Drainage: excessively
Permeability: rapid
Runoff: negligible on 1 to 5 percent slopes, very low on 5 to 20 percent slopes, and low on slopes greater than 20 percent.

USE AND VEGETATION: Used mostly for livestock grazing. Climax vegetation on these soils include indiangrass, sand bluestem, giant dropseed, little bluestem, sand lovegrass, sand dropseed, shinoak, yucca, hackberry, littleleaf sumac, sand sagebrush, mentzelia, gauras, primrose, and groundcherries.

DISTRIBUTION AND EXTENT: Southern High Plains, Breaks (MLRA-77E in LRR H) of northwestern Oklahoma, the Texas and Oklahoma Panhandles, and adjacent areas of Southwestern Kansas. This soil is extensive.

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

SERIES PROPOSED: Beaver County, Oklahoma, 2008. The name of the series is from a USGS Quadrangle in Hemphill County, Texas.

REMARKS:
These soils were formerly included in the Tivoli series.

Diagnostic horizons and features in this pedon:
Ochric epipedon: 0 to 10 cm (0 to 4 in) (A horizon).

Additional comments: KSSL lab analysis supports mixed mineralogy.

ADDITIONAL DATA: KSSL data available. S2011OK007001 (TL-Beaver County, Oklahoma)

TAXONOMIC VERSION: Keys to Soil Taxonomy, Twelfth Edition, 2014.

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National Cooperative Soil Survey
U.S.A.