LOCATION BEAVERIDGE WY
Tentative Series
Rev. TAG-DMM-RJS
04/2011
BEAVERIDGE SERIES
The Beaveridge series consists of very deep, well drained soils that formed in slope alluvium derived from metamorphic and sedimentary rock over residuum weathered from sandstone and shale. These soils are on eroded fan remnants and hills. Slopes are 2 to 12 percent. Mean annual precipitation is 430 mm and annual air temperature is about 1 degree C.
TAXONOMIC CLASS: Fine-loamy, mixed, superactive Ustic Argicryolls
TYPICAL PEDON: Beaveridge loam, in rangeland (colors are for dry soil unless otherwise noted).
A--0 to 13 cm; dark grayish brown (10YR 4/2) loam, very dark grayish brown (10YR 3/2) moist; weak fine and medium subangular blocky structure; moderately hard, firm, slightly sticky, slightly plastic; many very fine and fine, and common medium and coarse roots; many fine interstitial pores; 7 percent gravel, 3 percent cobbles; slightly acid (pH 6.2); clear smooth boundary. (10 to 25 cm thick)
AB--13 to 30 cm; brown (10YR 4/3) loam, dark brown (10YR 3/3) moist; moderate fine and medium subangular blocky structure; moderately hard, firm, slightly sticky, slightly plastic; many very fine and fine, and common medium and coarse roots; many fine tubular pores; 7 percent gravel, 3 percent cobbles; slightly acid (pH 6.4); clear wavy boundary. (0 to 25 cm thick)
Bt--30 to 71 cm; yellowish brown (10YR 5/4) clay loam, dark yellowish brown (10YR 4/4) moist; moderate medium and coarse subangular blocky structure; very hard, extremely firm, moderately sticky, moderately plastic; many very fine and fine, and common medium and coarse roots; many fine tubular pores; 20 percent distinct clay films on all faces of peds; 7 percent gravel, 3 percent cobbles; neutral (pH 6.7); gradual wavy boundary. (20 to 50 cm thick)
C1--71 to 99 cm; yellowish brown (10YR 5/6) sandy loam, dark yellowish brown (10YR 4/4) moist; massive; slightly hard, friable, nonsticky, nonplastic; common very fine, fine and medium, and few coarse roots; many fine tubular pores; neutral (pH 6.8); gradual wavy boundary. (15 to 50 cm thick)
2C2--99 to 130 cm; light yellowish brown (2.5Y 6/4) clay, light olive brown (2.5Y 5/4) moist; 15 percent coarse distinct yellowish brown (10YR 5/6) mottles; massive; very hard, extremely firm, very sticky, very plastic; common very fine and fine, and few medium and coarse roots; many fine tubular pores; 5 percent parachanners; slightly acid (pH 6.4); clear smooth boundary. (20 to 50 cm thick)
2C3--130 to 200 cm; olive yellow (2.5Y 6/6) sandy clay loam, light olive brown (2.5Y 5/6) moist; massive; moderately hard, firm, slightly sticky, slightly plastic; common very fine and fine, and few medium and coarse roots; many fine tubular pores; neutral (pH 7.1).
TYPE LOCATION: Sublette County, Wyoming; located approximately 1,895 feet North and 95 feet West of the SE corner of section 26, T 35N, R 113W; USGS Merna, Wyoming topographic quadrangle; 42 degrees 58 minutes 21.00 seconds north latitude and 110 degrees 17 minutes 36.00 seconds west longitude.
RANGE IN CHARACTERISTICS:
Soil temperature - 1.5 to 4.0 degrees C.
Mollic epipedon thickness - 25 to 40 cm
Depth to argillic horizon - 25 to 40 cm
Depth to lithologic discontinuity - 60 to 100 cm
A horizon
Hue: 7.5YR or 10YR; dry or moist
Value: 3 or 4 dry; 2 or 3 moist
Chroma: 2 or 3; dry or moist
Clay content: 18 to 25 percent
Rock fragments content: 0 to 15 percent--0 to 10 percent gravel, 0 to 5 percent cobbles
Reaction: pH 6.1 to 6.8
AB horizon
Hue: 7.5YR or 10YR; dry or moist
Value: 3 or 4 dry; 2 or 3 moist
Chroma: 2 or 3; dry or moist
Texture: loam, sandy loam
Clay content: 18 to 27 percent
Rock fragments content: 0 to 20 percent--0 to 15 percent gravel, 0 to 5 percent cobbles
Reaction: pH 6.1 to 6.8
Bt horizon
Hue: 7.5YR or 10YR; dry or moist
Value: 5 or 6 dry; 3 or 4 moist
Chroma: 3 or 4; dry or moist
Texture: sandy clay loam, clay loam
Clay content: 21 to 35 percent
Rock fragments: 0 to 20 percent--0 to 15 percent gravel, 0 to 5 percent cobbles
Reaction: pH 6.6 to 7.3
C1 horizon
Hue: 7.5YR or 10YR; dry or moist
Value: 4 to 6; dry or moist
Chroma: 4 or 6; dry or moist
Texture: loam, sandy loam
Clay content: 5 to 15 percent
Rock fragments: 0 to 10 percent--0 to 10 percent gravel; 0 to 5 percent cobbles
Reaction: pH 6.6 to 7.3
2C2 horizon
Hue: 2.5Y or 5Y; dry or moist
Value: 4 to 6; dry or moist
Chroma: 3 or 4; dry or moist
Texture: clay, clay loam
Clay content: 30 to 46 percent
Rock fragments: 0 to 10 percent parachanners
Reaction: pH 6.1 to 6.8
2C3 horizon
Hue: 2.5Y or 5Y; dry or moist
Value: 5 or 6; dry or moist
Chroma: 4 or 6; dry or moist
Texture: loam, sandy clay loam
Clay content: 20 to 35 percent
Rock fragments content: 0 to 10 percent parachanners
Reaction: pH 6.6 to 7.3
COMPETING SERIES:
Amsden (WY) - have secondary calcium carbonate accumulation
Barbarela (MT) - is moderately deep to a lithic contact
Cific (WY) - is moderately deep to a paralithic contact
Coldspring (CO) - is deep to a lithic contact
Croftshaw (NM) - have hues of 10YR in the 2C horizon
Dewville (CO) - have secondary calcium carbonate accumulation
Gelkie (CO) - have secondary calcium carbonate accumulation
Highrye (MT) - is deep to a paralithic contact
Hooligan (MT) - is moderately deep to a paralithic contact
Inchau (WY) - is moderately deep to a paralithic contact
Kezar (CO) - is moderately deep to a lithic contact
Leavitt (WY) - have secondary calcium carbonate accumulation
Lucky (CO) - is moderately deep to a lithic contact
Lymanson (WY) - is moderately deep to a paralithic contact
Miracle (CO) - is moderately deep to a lithic contact
Monaberg (MT) - does not have a lithologic discontinuity
Passcreek (WY) - is moderately deep to a lithic contact
Rainbolt (WY) - is moderately deep to a paralithic contact
Tripit (WY) - is moderately deep to a paralithic contact
Wellsville (CO) - have secondary calcium carbonate accumulation
Woosley (WY) - is moderately deep to a lithic contact
Youga (CO) - does not have a lithologic discontinuity
Zade (MT) - is moderately deep to a paralithic contact
GEOGRAPHIC SETTING:
Landform - eroded fan remnants, hills
Elevation - 2250 to 2470 meters
Slope - 2 to 12 percent
Parent Material - slope alluvium derived from metamorphic and sedimentary rock over residuum weathered from sandstone and shale
Climate - long, cold winters; cool, moist springs; short, cool summers
Mean annual precipitation - 380 to 480 mm with peak periods of precipitation occurring during the spring
Mean annual air temperature - 0.5 to 3.0 degrees C.
Frost-free period - 25 to 45 days
GEOGRAPHICALLY ASSOCIATED SOILS: None listed.
DRAINAGE AND PERMEABILITY: Well drained; moderate permeability.
USE AND VEGETATION: Beaveridge soils are primarily used for rangeland. The potential native vegetation is mainly mountain big sagebrush, Letterman's needlegrass, Columbia needlegrass, snowberry, and Idaho fescue.
DISTRIBUTION AND EXTENT: Beaveridge soils are of small extent in southwestern Wyoming. MLRA - 43B.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Bozeman, Montana.
SERIES PROPOSED: Sublette County, Wyoming, 2011. The series name is derived from a local landmark.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Mollic epipedon - from 0 to 30 cm (A, AB horizons)
Argillic horizon - from 30 to 71 cm (Bt horizon)
Lithologic discontinuity - at 99 cm (2C2 horizon)
Particle-size control section - from 30 to 71 cm (Bt horizon).
Beaveridge soils have a cryic temperature regime and an ustic moisture regime.
Taxonomic version: Eleventh Edition, 2010.
National Cooperative Soil Survey
U.S.A.