LOCATION SCHRUTE WY
Tentative Series
TIK-DPG-DEW
02/2025
SCHRUTE SERIES
Depth class: Very deep
Drainage class: Well drained
Saturated hydraulic conductivity: High
Parent material: Alluvium derived from interbedded sedimentary rock
Geomorphic location: Drainageways, flood-plain steps, or stream terraces
Slope range: 0 to 15 percent
Mean annual temperature:4.5 degrees C (40 degrees F)
Mean annual precipitation: 205 millimeters (8.0 inches)
Taxonomic Class:
Fine-loamy, mixed, superactive, frigid Ustic Haplargids
Typical Pedon:
Schrute silt loam in rangeland. (Colors are for dry soil unless otherwise noted.)
A--0 to 7 centimeters; light yellowish brown (2.5Y 6/3) silt loam, brown (10YR 4/3) moist; moderate medium platy structure; soft, very friable, slightly sticky, slightly plastic; common very fine and many fine roots throughout; many very fine and fine irregular pores; very slightly effervescent; strongly alkaline (pH 8.6); clear smooth boundary.
Bt1--7 to 14 centimeters; light olive brown (2.5Y 5/3) silt loam, dark yellowish brown (10YR 3/4) moist; weak medium subangular blocky structure; soft, very friable, slightly sticky, slightly plastic; many very fine and fine roots throughout; many very fine and fine irregular pores; 10 percent distinct clay films on all faces of peds; slightly effervescent; strongly alkaline (pH 8.6); clear smooth boundary.
Bt2--14 to 43 centimeters; brown (10YR 5/3) silty clay loam, dark yellowish brown (10YR 3/4) moist; weak fine subangular blocky structure; soft, very friable, moderately sticky, moderately plastic; many very fine and fine roots throughout; common very fine and fine irregular pores; 15 percent distinct clay films on all faces of peds; slightly effervescent; strongly alkaline (pH 8.6); clear smooth boundary.
Bt3--43 to 90 centimeters; pale brown (10YR 6/3) clay loam, olive brown (2.5Y 4/3) moist; weak fine subangular blocky structure; soft, very friable, moderately sticky, moderately plastic; many very fine and fine roots throughout; common fine and medium irregular pores; 5 percent distinct clay films on all faces of peds; slightly effervescent; moderately alkaline (pH 8.4); clear smooth boundary.
Bt4--90 to 200 centimeters; pale brown (10YR 6/3) clay loam, brown (10YR 4/3) moist; weak fine subangular blocky structure; soft, very friable, moderately sticky, moderately plastic; common fine roots throughout; common medium irregular pores; 5 percent distinct clay films on all faces of peds; slightly effervescent; moderately alkaline (pH 8.2).
Type Location:
Sweetwater County, WY
USGS Quadrangle: Clay Buttes SE
Latitude: 41.810
Longitude: -109.406
Datum: WGS84
Coordinates source: Hand-held GPS
Range in Characteristics:
Depth to argillic horizon: 5 to 28 centimeters
Particle Size Control Section (weighted average):
Clay content: 25 to 29 percent
Sand content: 15 to 35 percent
Silt content: 40 to 80 percent
Total rock fragments: 0 to 10 percent
A horizon:
Hue--10YR or 2.5Y
Value--5 to 7 dry; 4 or 5 moist
Chroma--2 or 3
Texture (less than 2 mm fraction)--Loam or silt loam
Clay content--10 to 25 percent
Rock fragments--0 to 10 percent gravels
Calcium carbonate equivalent--0 to 14
Sodium absorption ratio--0 to 12
Reaction--pH 8.4 to 9.0
Thickness--5 to 10 centimeters
Bt/Btn horizons:
Hue--10YR or 2.5Y
Value--3 to 6 dry; 3 to 6 moist
Chroma--2 to 4 dry; 3 or 4 moist
Texture (less than 2 mm fraction)--Silt loam, silty clay loam, loam, or clay loam
Clay content--18 to 32 percent
Rock fragments--0 to 20 percent gravels
Sodium absorption ratio--0 to 25
Reaction--pH 8.0 to 9.4
Thickness--36 to 193 centimeters
Btk/Btkn horizons (when present):
Hue--10YR or 2.5Y
Value--5 or 6 dry; 4 or 5 moist
Chroma-4 or 6 dry; 4 moist
Texture (less than 2 mm fraction)--Silt loam, silty clay loam, loam, or clay loam
Clay content--22 to 30 percent
Rock fragments--0 to 15 percent gravels
Calcium carbonate equivalent--1 to 14
Sodium absorption ratio--0 to 25
Reaction--pH 8.6 to 9.4
Thickness--0 to 107 centimeters
C horizons (when present):
Hue--10YR
Value--4 to 6 dry; 3 to 5 moist
Chroma--3 or 4 dry; 2 to 4 moist
Texture (less than 2 mm fraction)--Silt loam, fine sandy loam, loam, or sandy clay loam
Clay content--8 to 28 percent
Rock fragments--0 to 25 percent gravels
Sodium absorption ratio--6 to 25
Reaction--pH 8.2 to 9.4
Thickness--0 to 130 centimeters
Competing Series:
Alcova (WY) - has greater than 35 percent rock fragments in the subsoil
Almy (WY) - have hue redder than 10YR
Bateson (WY) - have a lithologic discontinuity with greater than 35 percent rock fragments
Bluerim (WY) - moderately deep to paralithic contact
Diamondville (WY) - moderately deep to paralithic contact
Forelle (WY) - has less than 50 percent silt in the particle-size control section and does not allow very strongly alkaline reations
Jensenwell (WY) - moderately deep to lithic contact
Juel (WY) - deep to paralithic contact
Maysprings (WY) - greater than 40 percent fine sand or coarser in the particle-size control section
Satanka (WY) - moderately deep to paralithic contact
Simanni (WY) - greater than 35 percent fine sand or coarser in the particle-size control section
Sweetlette (WY) - deep to paralithic contact
Taffom (WY) - greater than 35 percent fine sand or coarser in the particle-size control section
Geographic Settings:
Parent material: Alluvium derived from interbedded sedimentary rock
Landform: Drainageways, flood-plain steps, or stream terraces
Slope ranges: 0 to 15 percent
Mean annual temperature range: 2.5 to 7.0 degrees C (36.5 to 44.6 degrees F)
Mean annual precipitation range: 180 to 230 millimeters (7 to 9 inches)
Frost-free period: 50 to 100 days
Elevation: 1890 to 2350 meters (6,200 to 7,710 feet)
Climate: Long, cold winters; cool, moist springs, short, warm summers
Geographically Associated Soils:
None listed.
Drainage and Saturated Hydraulic Conductivity:
Drainage class: Well drained
Saturated hydraulic conductivity: 0.5 to 5 m/sec
Use and Vegetation:
Schrute soils are primarily used for rangeland. The potential native vegetation is Indian ricegrass, western wheatgrass, greasewood, Gardner's saltbush, and basin wildrye.
Distribution and Extent:
Schrute soils are of small extent in southwestern Wyoming; MLRA 34A.
Soil Survey Region (SSR) Responsible:
Bozeman, Montana
Series Proposed:
Sweetwater County, WY 2021. Schrute is a coined phrase.
Remarks:
Typical Pedon Taxonomic Features:
Ochric epipedon--0 to 7 centimeters (A horizon)
Argillic horizon--7 to 43 centimeters (Bt1 and Bt2 horizons)
Particle size control section--7 to 43 centimeters
Taxonomic Version: Keys to Soil Taxonomy, 13th edition, (2022)
National Cooperative Soil Survey
U.S.A.