LOCATION SUEKER WY
Tentative Series
Rev. KCC-DJP-RJS
05/2017
SUEKER SERIES
The Sueker series consists of very deep, somewhat poorly drained soils that formed in alluvium. These soils are on flood plains and meander scrolls. Slopes are 0 to 2 percent. Mean annual precipitation is about 280 mm and annual air temperature is about 4.0 degrees C.
TAXONOMIC CLASS: Fine, mixed, superactive, calcareous, frigid Oxyaquic Xerofluvents
TYPICAL PEDON: Sueker sandy clay loam, in pasture (colors are for dry soil unless otherwise noted).
A--0 to 11 cm; reddish gray (5YR 5/2) sandy clay loam, dark gray (5YR 4/1) moist; weak very fine angular blocky structure; slightly hard, friable; moderately sticky, moderately plastic; many fine and common medium roots; many fine interstitial pores; very slightly effervescent; slightly alkaline (pH 7.8); clear smooth boundary. (5 to 12 cm thick)
C1--11 to 58 cm; light brown (7.5YR 6/3) sandy clay loam, brown (7.5YR 5/2) moist; massive; slightly hard, friable; moderately sticky, moderately plastic; common fine and medium roots; many fine interstitial pores; very slightly effervescent; slightly alkaline (pH 7.8); gradual smooth boundary. (25 to 50 cm thick)
C2--58 to 86 cm; light brown (7.5YR 6/3) silty clay, brown (7.5YR 5/2) moist; 2 percent fine prominent irregular dark yellowish brown (10YR 3/6) masses of oxidized iron in matrix; massive; hard, very firm; very sticky, very plastic; few fine interstitial pores; very slightly effervescent; slightly alkaline (pH 7.8); gradual smooth boundary. (15 to 35 cm thick)
C3--86 to 105 cm; light brown (7.5YR 6/3) sandy clay loam, brown (7.5YR 5/2) moist; 4 percent fine prominent irregular dark yellowish brown (10YR 3/6) masses of oxidized iron in matrix; massive; slightly hard, friable; moderately sticky, moderately plastic; common fine interstitial pores; very slightly effervescent; slightly alkaline (pH 7.8); gradual smooth boundary. (15 to 30 cm thick)
C4--105 to 150 cm; pinkish gray (7.5YR 6/2) silty clay, gray (7.5YR 5/1) moist; 3 percent manganese masses and 10 percent fine prominent irregular dark yellowish brown (10YR 3/6) masses of oxidized iron in matrix; massive; very hard, very firm; very sticky, very plastic; few fine interstitial pores; slightly alkaline (pH 7.8).
TYPE LOCATION: Lincoln County, Wyoming; USGS Beckwith, Wyoming topographic quadrangle; 41 degrees 56 minutes 8.16 seconds north latitude and 110 degrees 59 minutes 23.87 seconds west longitude.
RANGE IN CHARACTERISTICS:
Mean annual soil temperature -- 4.0 to 7.0 degrees C.
Depth to a seasonally high water table and redoximorphic features -- 50 to 90 cm
Particle-size control section - averages 35 percent clay or more
Oi horizon (where present)
Thickness: 0 to 5 cm
A horizon
Hue: 5YR to 10YR; dry or moist
Value: 4 or 5 dry; 3 or 4 moist
Chroma: 2 to 3 dry; 1 to 2.5 moist
Texture (less than 2 mm): sandy clay loam, peaty sandy clay loam
Clay content: 21 to 34 percent
Calcium carbonate equivalent: 0 to 3 percent
Reaction: pH 7.6 to 8.2
C1, C3 horizon
Value: 5 or 6 dry; 4 or 5 moist
Chroma: 2 or 3 dry; 2 or 3 moist
Clay content: 25 to 34 percent
Calcium carbonate equivalent: 1 to 3 percent
Reaction: pH 7.6 to 8.0
C2, C4 horizons
Value: 5 or 6 dry; 4 or 5 moist
Chroma: 2 or 3 dry; 1 or 2 moist
Texture (less than 2 mm): silty clay, clay
Clay content: 40 to 50 percent
Calcium carbonate equivalent: 1 to 3 percent
Reaction: pH 7.6 to 8.4
Cg horizon (where present)
Hue: 7.5YR dry or moist
Value: 5 or 6 dry; 5 moist
Chroma: 2 dry; 1 or 2 moist
Texture (less than 2 mm): sandy loam, sandy clay loam, clay loam
Clay content: 16 to 39 percent
Reaction: pH 7.6 to 8.2
COMPETING SERIES: There are no competing series.
GEOGRAPHIC SETTING:
Landform: flood plains and meander scrolls
Elevation: 1,850 to 1,900 meters
Slope: 0 to 2 percent
Parent Material: alluvium
Climate: long, cold winters; cool, moist springs; short, cool summers.
Mean annual precipitation: 225 to 350 mm with peak periods of precipitation occurring during the winter
Mean annual air temperature: 3.0 to 6.0 degrees C.
Frost-free period: 40 to 90 days
GEOGRAPHICALLY ASSOCIATED SOILS: None listed.
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Somewhat poorly drained; 0.5 to 5.0 um/sec.
USE AND VEGETATION: Sueker soils are primarily used for irrigated hayland and irrigated pasture. The vegetation is mainly Garrison creeping meadow foxtail, timothy, tufted hairgrass, and other sedges, rushes and forbs.
DISTRIBUTION AND EXTENT: Sueker soils are of small extent in southwestern Wyoming. MLRA 13.
SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Bozeman, Montana
SERIES PROPOSED: Lincoln County, Wyoming, 2017. The series name is derived from a local landmark.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Redoximorphic features -- from 58 to 150 cm (C2, C3, C4 horizons)
Particle-size control section -- from 25 to 100 cm (part of C1, C2, part of C3 horizons).
Sueker soils have a frigid temperature regime and a xeric moisture regime and oxyaquic moisture subclass.
Taxonomic version: Keys to Soil Taxonomy, Twelfth Edition, 2014.
National Cooperative Soil Survey
U.S.A.