LOCATION BARGEVILLE WY
Tentative Series
Rev. TAG-DMM-RJS
03/2011
BARGEVILLE SERIES
The Bargeville series consists of deep, well drained soils that formed in colluvium over residuum weathered from quartzite. These soils are on dip slopes, mountain slopes, and scarp slopes. Slopes are 30 to 90 percent. Mean annual precipitation is 560 mm and annual air temperature is about 1 degrees C.
TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive Umbric Haplocryalfs
TYPICAL PEDON: Bargeville very gravelly loam, in forest land (colors are for dry soil unless otherwise noted).
Oe--0 to 7 cm; moderately decomposed plant material; strongly acid (pH 5.5); clear smooth boundary. (4 to 8 cm thick)
A--7 to 24 cm; weak red (2.5YR 4/2), very gravelly loam, dusky red (2.5YR 3/2), moist; moderate fine granular structure; soft, very friable, slightly sticky, slightly plastic; many very fine roots; many fine interstitial pores; 35 percent gravel, 5 percent cobbles; slightly alkaline (pH 7.4); clear wavy boundary. (10 to 25 cm thick)
AB--24 to 43 cm; reddish brown (2.5YR 4/3), very gravelly loam, dark reddish brown (2.5YR 3/3), moist; moderate fine subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; many very fine roots; many fine interstitial pores; 25 percent gravel, 15 percent cobbles; neutral (pH 6.6); gradual wavy boundary. (0 to 25 cm thick)
Bt1--43 to 78 cm; reddish brown (2.5YR 4/4), very gravelly loam, dark reddish brown (2.5YR 3/4), moist; moderate fine subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; many fine roots; many fine vesicular pores; 10 percent distinct clay films on all faces of peds; 35 percent gravel, 5 percent cobbles; very strongly acid (pH 4.5); gradual wavy boundary.
Bt2--78 to 100 cm; reddish brown (2.5YR 4/4), very gravelly clay loam, dark reddish brown (2.5YR 3/4), moist; moderate fine subangular blocky structure; moderately hard, firm, slightly sticky, slightly plastic; many fine roots; many fine vesicular pores; 10 percent distinct clay films on all faces of peds; 35 percent gravel, 5 percent cobbles; very strongly acid (pH 4.9); clear wavy boundary. (combined thickness of Bt horizons - 50 to 80 cm)
BC--100 to 115 cm; red (2.5YR 4/6), very gravelly clay loam, dark red (2.5YR 3/6), moist; weak medium subangular blocky structure; hard, very firm, moderately sticky, moderately plastic; few fine vesicular pores; 50 percent gravel; very strongly acid (pH 5.0); abrupt irregular boundary. (10 to 25 cm thick)
R--115 to 200 cm; very strongly cemented red quartzite bedrock.
TYPE LOCATION: Sublette County, Wyoming; located approximately 1,830 feet north and 1,055 feet west from the southeast corner of section 13, T 27N, R 115W; USGS Lake Mountain, Wyoming topographic quadrangle; 42 degrees 19 minutes 41.00 seconds north latitude and 110 degrees 25 minutes 47.00 seconds west longitude.
RANGE IN CHARACTERISTICS:
Soil temperature - 1.5 to 4.0 degrees C.
Umbric epipedon thickness - 25 to 50 cm
Depth to argillic horizon - 25 to 50 cm
Depth to lithic contact - 100 to 150 cm
Particle-size control section - rock fragments average greater than 35 percent
Note: This soil does not meet the base saturation requirement for a mollisol.
Oe horizon
Texture: moderately decomposed plant material
Reaction: pH 4.5 to 6.5
A horizon
Hue: 2.5YR or 5YR; dry or moist
Value: 3 or 4 dry; 2 or 3 moist
Chroma: 2 or 3 dry or moist
Clay content: 16 to 25 percent
Rock fragments: 35 to 55 percent--25 to 45 percent gravel, 0 to 10 percent cobbles
Reaction: pH 6.8 to 7.6
AB horizon
Hue: 2.5YR or 5YR; dry or moist
Value: 3 or 4 dry; 2 or 3 moist
Chroma: 2 or 3 dry or moist
Texture: loam, clay loam
Clay content: 18 to 32 percent
Rock fragments: 35 to 55 percent--20 to 35 percent gravel, 10 to 20 percent cobbles
Reaction: pH 6.6 to 7.3
Bt1, Bt2 horizons
Hue: 2.5YR or 5YR; dry or moist
Value: 4 or 5 dry; 3 or 4 moist
Chroma: 4 or 6; dry or moist
Texture: loam, clay loam
Clay content: 21 to 35 percent
Rock fragments: 35 to 55 percent--25 to 45 percent gravel, 0 to 10 percent cobbles
Reaction: pH 4.5 to 5.5
BC horizon
Hue: 2.5YR or 5YR; dry or moist
Value: 4 or 5 dry; 3 or 4 moist
Chroma: 4 or 6; dry or moist
Texture: loam, clay loam
Clay content: 20 to 32 percent
Rock fragments: 35 to 60 percent--35 to 55 percent gravel, 0 to 10 percent cobbles
Reaction: pH 4.5 to 5.5
COMPETING SERIES:
Wapshilla (ID) - is very deep
GEOGRAPHIC SETTING:
Landform - dip slopes, mountain slopes, scarp slopes
Elevation - 2255 to 2805 meters
Slope - 30 to 90 percent
Parent Material - colluvium over residuum weathered from quartzite
Climate - long, cold winters; cool, moist springs; short, cool summers
Mean annual precipitation - 500 to 610 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 slow permeability.
USE AND VEGETATION: Bargeville soils are primarily used for forest land. The potential native vegetation is mainly subalpine fir, lodgepole pine, elk sedge and pinegrass.
DISTRIBUTION AND EXTENT: Bargeville 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:
Umbric epipedon - from 7 to 43 cm (A, AB horizons)
Argillic horizon - from 43 to 100 cm (Bt1, Bt2 horizons)
Lithic contact - at 115 cm (R horizon)
Particle-size control section - from 43 to 93 cm (Bt1, part of Bt2)
Bargeville soils have a cryic temperature regime and an udic moisture regime that borders on ustic.
Taxonomic version: Eleventh Edition, 2010.
National Cooperative Soil Survey
U.S.A.