LOCATION CABINET ID+MTEstablished Series
TAXONOMIC CLASS: Clayey over loamy, mixed, active, frigid Andic Hapludalfs
TYPICAL PEDON: Cabinet ashy silt loam, cut over forested area (Colors are for dry soil unless otherwise noted)
Oi--0 to 0.5 inches; undecomposed and decomposed forest litter. (0.5 to 2 inches thick)
A--0.5 to 3 inches; grayish brown (10YR 5/2) ashy silt loam, very dark grayish brown (10YR 3/2) moist; moderate fine and medium granular structure; soft, very friable, nonsticky and slightly plastic; many very fine and fine and few medium roots; many very fine and common fine tubular pores; slightly acid (pH 6.1); clear wavy boundary. (0 to 4 inches thick)
Bw--3 to 11 inches; light yellowish brown (10YR 6/4) ashy silt loam, dark yellowish brown (10YR 4/4) moist; weak fine and medium subangular blocky structure; soft, friable, slightly sticky and slightly plastic; common very fine and few fine and medium roots; common very fine and few fine tubular pores; slightly acid (pH 6.1); abrupt wavy boundary. (7 to 10 inches thick)
2E/Bt--11 to 19 inches; E part (80 percent) is very pale brown (10YR 8/2) silty clay loam, brown (10YR 5/3) moist, Bt part (20 percent) is pink (7.5YR 7/4) clay, brown (7.5YR 5/4) moist; moderate coarse prismatic structure parting to moderate medium and coarse angular blocky; very hard, very firm, slightly sticky and moderately plastic; common very fine and few fine roots matted on exterior of peds; common very fine and few fine tubular pores; many distinct clay films in pores and on faces of peds; few fine manganese concretions; strongly acid (pH 5.4); clear wavy boundary. (5 to 10 inches thick)
2Bt1--19 to 27 inches; pink (7.5YR 7/4) clay, brown (7.5YR 5/4) moist; moderate very coarse prismatic structure parting to moderate coarse angular blocky; extremely hard, extremely firm, very sticky and very plastic; few very fine and fine roots matted on exterior of peds; few very fine and fine tubular pores; many distinct clay films in pores and on faces of peds; few fine manganese concretions and stains; reddish gray (5YR 5/2) coats on faces of peds; very strongly acid (pH 5.1); gradual wavy boundary. (5 to 13 inches thick)
2Bt2--27 to 35 inches; pink (7.5YR 7/4) clay, reddish brown (5YR 5/3) moist; weak very coarse prismatic structure parting to moderate coarse angular blocky; extremely hard, extremely firm, very sticky and very plastic; few very fine and fine roots matted on exterior of peds; few very fine and fine tubular pores; many distinct clay films in pores and on faces of peds; common medium manganese stains; pinkish gray (5YR 6/2) and brown (7.5YR 5/4) coats on faces of peds; very strongly acid (pH 4.7); abrupt wavy boundary. (5 to 13 inches thick)
3Bt3--35 to 43 inches; pink (7.5YR 7/4) very fine sandy loam, light reddish brown (5YR 6/3) moist; weak coarse subangular blocky structure; soft, very friable, slightly sticky and slightly plastic; few very fine and fine roots; few very fine and fine tubular and irregular pores; few thin clay bridges between mineral grains; few fine manganese stains; 1/4 inch thick discontinuous band of iron stain across horizon; brown (7.5YR 5/4) and pinkish gray (7.5YR 6/2) coats on faces of peds; very strongly acid (pH 5.0); abrupt wavy boundary. (6 to 12 inches thick)
3Bt4--43 to 49 inches; pink (7.5YR 7/4) clay, light reddish brown (5YR 6/3) moist; weak coarse subangular blocky structure; very hard, very firm, very sticky and very plastic; few very fine and fine roots; very few fine vesicular pores; common distinct clay films in pores and on faces of peds; common medium and large distinct light gray (5YR 7/1) and pinkish gray (5YR 6/2) moist iron depletions; many medium manganese stains; many medium silt coats on faces of peds; strongly acid (pH 5.3); abrupt wavy boundary. (4 to 6 inches thick)
3Bt5--49 to 54 inches; pink (7.5YR 7/4) loam, brown (7.5YR 5/4) moist; weak coarse subangular blocky structure; hard, firm, slightly sticky and slightly plastic; few very fine irregular pores; few thin clay bridges between mineral grains; common medium manganese stains; strongly acid (pH 5.4); abrupt wavy boundary. (0 to 5 inches thick)
3Bt6--54 to 60 inches; light brown (7.5YR 6/4) clay, brown (7.5YR 5/4) dry; weak coarse subangular blocky structure; very hard, very firm, very sticky and very plastic; few very fine vesicular pores; common distinct clay films in pores and on faces of peds; many large manganese stains; strongly acid (pH 5.4).
TYPE LOCATION: Bonner County, Idaho; Cabinet Gorge area; 1/4 mile west of the Montana state line along a paved road about 20 feet south of road; 800 feet west and 1,150 feet north of the southeast corner, sec. 34, T. 55 N., R. 3 E.
RANGE IN CHARACTERISTICS:
Average annual soil temperature - 43 to 45 degrees F.
Depth to seasonal perched water table - 10 to 24 inches February through April
Moisture control section - dry for 30 to 45 consecutive days in late summer and early fall
Some pedons have a 1/8 to 1/2 inch layer of light gray volcanic ash on the surface.
A horizon
Chroma - 2 or 3 moist
Clay content - 6 to 12 percent
Bulk density - 0.85 to 1.0 g/cc
Acid oxalate extractable A1 + 1/2 Fe - 1.0 to 2.0 percent Reaction - moderately acid to neutral
Bw horizon
Hue - 10YR or 7.5YR
Value - 4 or 5 moist
Chroma - 3 to 6 dry or moist
Clay content - 6 to 12 percent
Bulk density - 0.85 to 1.0 g/cc
Acid oxalate extractable A1 + 1/2 Fe - 1.0 to 2.0 percent Reaction - moderately acid to neutral
2E/Bt horizon
Chroma - 2 or 3 dry or moist
Texture - SIL, SICL, C
Clay content - 27 to 35 percent
Reaction - strongly acid or moderately acid
Base saturation by sum of cations - 45 to 60 percent
2Bt horizons
Hue - 10YR, 7.5YR, or 5YR
Value - 4 through 7 moist
Chroma - 2 through 4 dry
Coatings on faces of peds Hue - 5YR or 7.5YR
Value - 5 to 7 dry, 4 to 7 moist
Chroma - 2 through 6 moist
Texture - C, SIC
Clay content - 50 to 70 percent
Reaction - very strongly acid to moderately acid
Base saturation by sum of cations - 50 to 60 percent
3Bt horizons
Hue - 5YR or 7.5YR
Value - 6 or 7 dry, 5 or 6 moist
Chroma - 3 or 4 dry or moist
Coatings on faces of peds and redoximorphic features
Hue - 5YR or 7.5YR
Value - 5 to 7 dry, 4 to 6 moist
Chroma - 2 to 4 dry or moist
Texture - stratified VFSL to C
Clay content - 10 to 70 percent
Reaction - very strongly acid to moderately acid
COMPETING SERIES: There are no competing series.
GEOGRAPHIC SETTING: Cabinet soils are on stream terraces, lake plains and lake terraces. Slopes range from 0 to 30 percent. They formed in stratified glaciolacustrine sediments with a thin mantle of volcanic ash. Elevations are 2,100 to 2,800 feet. Average annual precipitation is 28 to 38 inches, average annual temperature is 42 to 45 degrees F., and the frost free period is 90 to 120 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Dewberry (T), Fernline (T), Hoodoo, Wrencoe, and Pywell. Dewberry soils are ashy over loamy-skeletal. Fernline soils are in a fine family. Hoodoo soils have a thick mantle of volcanic ash and have an ashy particle-size class. Wrencoe soils lack an argillic horizon. Pywell soils are organic soils.
DRAINAGE AND PERMEABILITY: Moderately well drained; slow runoff on gentle slopes and rapid on steeper slopes; very slow permeability.
USE AND VEGETATION: Cabinet soils are used mainly for timber production, grazing, hay and pasture, recreation, and wildlife habitat. Native vegetation is mainly western red cedar, western white pine, western larch, western hemlock, grand fir, Douglas fir, ponderosa pine, lodgepole pine, quaking aspen, and paper birch. Understory vegetation is mainly spirea, serviceberry, creambush oceanspray, willow, Columbia hawthorn, myrtle pachystima, woods rose, and common princes pine.
DISTRIBUTION AND EXTENT: Northern Idaho and Western Montana. This soil is of small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Bozeman, Montana
SERIES ESTABLISHED: Bonner County, Idaho, 1935.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - the zone from the mineral soil surface to 7 inches (A, Bw horizons)
Cambic horizon - the zone form 3 to 11 inches (Bw horizon)
Andic feature - the zone from the mineral soil surface to 11 inches (A, Bw horizons)
Argillic horizon - the zone from 19 to 60 inches (2Bt1, 2Bt2, 3Bt3, 3Bt4, 3Bt5, and 3Bt6 horizons)
Particle-size control section - the zone from 19 to 39 inches (2Bt1, 2Bt2, and part of the 3Bt3 horizons)
ADDITIONAL DATA: Laboratory data S78ID-017-010
NSSL pedon number 78P555.