LOCATION LEBARON IDEstablished Series
TAXONOMIC CLASS: Fine-silty, mixed, superactive, frigid Aquandic Palexeralfs
TYPICAL PEDON: Lebaron ashy silt loam, in pasture at 2,960 feet elevation. When described on July 10, 1984, the profile was moist to 17 inches (Colors are for dry soil unless otherwise noted).
Oe--0 to 1 inch; partially decomposed grass and organic matter.
A1--1 to 5 inches; grayish brown (10YR 5/2) ashy silt loam, very dark grayish brown (10YR 3/2) moist; few fine faint light brown (7.5YR 6/4) redox concentrations, strong brown (7.5YR 4/6) moist; moderate fine platy structure parting to weak fine granular; hard, friable, slightly sticky and slightly plastic; many very fine and fine roots; many very fine tubular pores; slightly acid (pH 6.5); clear wavy boundary.
A2--5 to 9 inches; light brownish gray (10YR 6/2) ashy silt loam, dark grayish brown (10YR 4/2) moist; few fine faint yellowish brown (10YR 5/6) redox concentrations, dark yellowish brown (10YR 4/6) moist; moderate fine platy structure parting to moderate fine subangular blocky; hard, friable, slightly sticky and slightly plastic; many very fine and fine roots; many very fine and fine tubular pores; few faint clay films located on faces of peds and in pores; slightly acid (pH 6.4); clear wavy boundary. (Combined thickness of A horizons is 4 to 8 inches)
E1--9 to 12 inches; light gray (10YR 7/2) silt loam, grayish brown (10YR 5/2) moist; common medium faint and prominent strong brown (7.5YR 5/6) redox concentrations, strong brown (7.5YR 4/6) moist; weak medium subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; many very fine and fine roots; many very fine and common fine tubular, and common very fine irregular pores; few fine rounded iron-manganese concretions; slightly acid (pH 6.4); clear smooth boundary.
E2--12 to 17 inches; light gray (10YR 7/2) silt loam, grayish brown (2.5Y 5/2) moist; many coarse faint and prominent brownish yellow (10YR 6/6) redox concentrations, strong brown (7.5YR 4/6) moist; massive; slightly hard, friable, slightly sticky and nonplastic; many very fine and fine roots; many very fine and few fine tubular, and few very fine irregular pores; few fine rounded iron-manganese concretions; slightly acid (pH 6.2); abrupt smooth boundary. (Combined thickness of E horizons is 5 to 21 inches)
Btb1--17 to 25 inches; yellowish brown (10YR 5/4) silty clay loam, brown (10YR 4/3) moist; many fine faint strong brown (7.5YR 5/6) redox concentrations, strong brown (7.5YR 4/6) moist; moderate fine and medium prismatic structure; very hard, firm, very sticky and moderately plastic; many very fine and few fine roots located along prism faces; many very fine and fine, and few medium tubular pores; many prominent clay films on faces of peds and in pores; common faint silt coatings on faces of peds; slightly acid (pH 6.1); clear wavy boundary. (5 to 8 inches thick)
Btb2--25 to 47 inches; light yellowish brown (10YR 6/4) silty clay loam, brown (10YR 4/3) moist; many fine faint and few fine prominent brownish yellow (10YR 6/6) redox concentrations, strong brown (7.5YR 4/6) moist; strong fine and medium prismatic structure; very hard, somewhat brittle, moderately sticky and moderately plastic; few very fine roots along prism faces; many very fine and fine, and few medium tubular pores; common prominent and many distinct clay films on faces of peds and in pores; common faint silt coatings and dark organic stains on faces of peds; slightly acid (pH 6.3); gradual wavy boundary. (6 to 22 inches thick)
Btb3--47 to 56 inches; brown (10YR 5/3) silty clay loam, dark brown (10YR 3/3) moist; common fine faint yellowish brown (10YR 5/6) redox concentrations, brown (7.5YR 4/4) moist; strong fine prismatic structure; very hard, very firm, very sticky and moderately plastic; few very fine roots; common very fine and fine tubular pores; many prominent and common distinct clay films on faces of peds and in pores; common faint silt coatings and dark organic manganese stains on faces of peds; many fine rounded iron-manganese concretions; neutral (pH 6.6); clear wavy boundary. (8 to 12 inches thick)
Btb4--56 to 62 inches; pale brown (10YR 6/3) silty clay loam, brown (10YR 5/3) moist; many medium distinct yellowish brown (10YR 5/6) redox concentrations, strong brown (7.5YR 4/6) moist; moderate medium prismatic structure; hard, firm, moderately sticky and moderately plastic; few very fine roots; common prominent and few distinct clay films on faces of peds and in pores; many faint silt coatings on faces of peds; many fine rounded iron-manganese concretions; slightly acid (pH 6.5).
TYPE LOCATION: Clearwater County, Idaho; about 4.5 miles east and 0.5 miles south of Greer, Idaho; about 2,450 feet west and 1,500 feet north of the southeast corner of section 9, T. 35 N., R. 3 E.; Latitude - 46 degrees, 23 minutes, 15 seconds West; Longitude - 116 degrees, 05 minutes, 21 seconds North; USGS Rudo Quadrangle.
RANGE IN CHARACTERISTICS:
Soil temperature - 41 to 46 degrees F. (Frigid temperature regime)
Soil moisture - dry in all parts of the moisture control section for 45 to 90 consecutive days during the 4 months following the summer solstice. (Xeric moisture regime).
Depth to perched seasonal water table - typically 4 to 18 inches from late October to early July; an apparent water table also exists in some pedons and typically occurs at 4 to 24 inches from mid-December to early August.
Thickness of Aquandic feature - 7 to 13 inches
Volcanic glass content - 5 to 15 percent
Acid-oxalate extractable Al + 1/2 Fe - .40 to 1.10
A horizons
Value - 2 to 6 dry, 2 to 4 moist
Chroma - 1 or 2 dry
Clay content - 18 to 23 percent
Reaction - slightly acid to neutral
E horizons
Hue - 10YR or 2.5Y dry or moist
Value - 5 to 7 dry, 3 to 5 moist
Chroma - 1 or 2 dry, 2 or 3 moist
Clay content - 12 to 20 percent
Reaction - strongly acid to slightly acid
Bt horizons
Hue - 10YR or 2.5Y dry
Value - 5 to 7 dry, 3 to 5 moist
Chroma - 1 to 4 dry, 3 or 4 moist
Texture - SICL, SIC
Clay content - 27 to 44 percent (weighted average of clay in the particle size control section is less than 35 percent)
Reaction - strongly acid to neutral
COMPETING SERIES: There are no competing series.
GEOGRAPHIC SETTING: Lebaron soils are on floodplains and drainageways on loess covered basalt plateaus and benches in canyons at elevations of 2,000 to 3,300 feet. The soils formed in mixed alluvium with an admixture of volcanic ash. The slope range is 0 to 3 percent. The average annual temperature is 40 to 45 degrees F. The average annual precipitation is 24 to 35 inches and the frost free season is 80 to 125 days (9 years in 10 to 1 year in 10 respectively).
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Latahco, Reggear(T) and Agatha series. Latahco soils are on floodplains and in drainageways and have a mollic epipedon. Reggear(T) soils are on hills and moderately deep to a fragipan. Agatha soils are on canyon sides and escarpments and are loamy-skeletal.
DRAINAGE AND PERMEABILITY: Poorly drained; runoff is slow; permeability is moderately slow. The soil is subject to rare, brief flooding from December through April. A perched water table is present and typically occurs at depth of 4 to 18 inches from late October to early July; an apparent water table also exists in some pedons and typically occurs at 4 to 24 inches from mid-December to early August.
USE AND VEGETATION: Used mainly for livestock grazing, hay production, watershed and some forestry. Potential native vegetation is Ponderosa pine, quaking aspen, black cottonwood and hawthorn with an understory of snowberry, bracken fern, mixed grasses, sedges and rushes.
DISTRIBUTION AND EXTENT: North Central Idaho; Lebaron soils are not extensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Bozeman, Montana
SERIES ESTABLISHED: Clearwater County, 2003.
REMARKS: Diagnostic horizons and other features recognized in this pedon are:
Ochric epipedon - The zone from 1 to 9 inches (A1 and A2 horizons).
Aquandic feature - The zone from 1 to 9 inches (A1 and A2 horizons).
Albic horizon - The zone from 9 to 17 inches (E1 and E2 horizons).
Abrupt textural change - The contact at 17 inches (between the E2 and Btb1 horizons).
Argillic horizon - The zone from 17 to 62 inches (Btb1, Btb2, Btb3 and Btb4 horizons).
Particle size control section - The zone from 17 to 37 inches (Btb1 and a portion of the Btb2 horizons).
The ranges in values listed for volcanic glass content and acid-oxalate extractable Al+1/2Fe are estimates only.