LOCATION KLICKSON ID+OR+WAEstablished Series
TAXONOMIC CLASS: Loamy-skeletal, isotic, frigid Vitrandic Argixerolls
TYPICAL PEDON: Klickson ashy silt loam - on a 61 percent northeast-facing slope at 3,200 feet elevation in forest. Described on July 26, 1973. (Colors are for dry soil unless otherwise noted.)
Oi--0 to 0.5 inches; decomposed litter under moss.
A1--0.5 to 6 inches; dark grayish brown (10YR 4/2) ashy silt loam, very dark brown (10YR 2/2) moist; strong medium and coarse granular structure; slightly hard, very friable, slightly sticky and slightly plastic; many very fine, medium, and coarse roots; many fine irregular pores; 5 percent cobbles and 5 percent gravel; slightly acid (pH 6.4); clear wavy boundary. (4 to 8 inches thick)
A2--6 to 15 inches; brown (10YR 4/3) cobbly ashy silt loam, dark brown (7.5YR 3/2) moist; weak medium and coarse subangular blocky structure; slightly hard, very friable, slightly sticky and slightly plastic; few very fine and many coarse roots; many very fine tubular pores; large piece of charcoal; 5 percent gravel and 10 percent cobbles; slightly acid (pH 6.4); gradual wavy boundary. (0 to 12 inches thick)
BA--15 to 21 inches; brown (10YR 5/3) cobbly ashy silt loam, dark yellowish brown (10YR 3/4) moist; weak fine and medium subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; few very fine and medium roots; many very fine tubular pores; 10 percent gravel and 15 percent cobbles; slightly acid (pH 6.4); gradual wavy boundary. (0 to 25 inches thick)
Bt1--21 to 51 inches; brown (7.5YR 5/4) very cobbly loam, dark brown (7.5YR 3/4) moist; moderate fine and medium subangular blocky structure; hard, friable, moderately sticky and moderately plastic; few very fine, fine and coarse roots; many very fine and fine tubular pores; few faint clay films on faces of peds; several clayey bands 5 to 10 millimeters thick; few clean silt grains; 20 percent gravel and 20 percent cobbles; slightly acid (pH 6.2); clear wavy boundary. (3 to 48 inches thick)
Bt2--51 to 60 inches; brown (7.5YR 5/3) very cobbly clay, brown (7.5YR 4/3) moist; moderate medium angular blocky structure; very hard, firm, moderately sticky and moderately plastic; few very fine roots; common very fine tubular pores; many faint nearly continuous clay films on all faces; few pressure faces; 20 percent gravel and 30 percent cobbles; slightly acid (pH 6.4).
TYPE LOCATION: Idaho County, Idaho; about 4 miles south of Cottonwood; about 350 feet south and 800 feet west of the northwest corner of the NE1/4 SE1/4 sec. 30, T.31N., R.1E. Latitude - 46 degrees, minutes, seconds North; Longitude - 116 degrees, minutes, seconds West; USGS Fenn Quadrangle.
RANGE IN CHARACTERISTICS:
Thickness of mollic epipedon - 10 to 20 inches
Base saturation - less than 75 percent by sum of cations in one or more horizons between 10 and 30 inches (estimated)
Depth to bedrock - greater than 40 inches
Days dry in soil moisture control section - 45 to 60
Average annual soil temperature - 41 to 46 degrees F
Average summer soil temperature without an O horizon - 59 to 62 degrees
Particle-size control section
Clay content - 18 to 35 percent
Rock fragments - 35 to 80 percent
Vitrandic feature thickness - 10 to 30 inches
Estimated properties of the volcanic ash influenced layers:
Volcanic glass content in the 0.02 to 2.0 mm fraction - 5 to 20 percent
Acid-oxalate extractable Al plus 1/2 Fe - 0.5 to 0.9 percent
Moist bulk density - 1.15 to 1.35 g/cc
15 bar water retention - 5 to 10 percent for air dried samples
A horizon
Hue - 7.5YR or 10YR
Value - 3 to 6 dry, 2 or 3 moist
Chroma - 2 or 3 dry, 1 to 3 moist
Texture - GR-ASHY-SIL, GR-ASHY-L, ASHY-L, CB-ASHY-L, ASHY-SIL, GRV-ASHY- L
Clay content - 12 to 25 percent
Rock fragment content - 0 to 40 percent
Reaction - strongly acid to neutral
AB or BA horizons (when present)
Hue - 10YR or 7.5YR
Value - 4 to 7 dry
Chroma - 2 to 6 dry, 2 to 4 moist
Textures - GR-ASHY-SIL, GR-ASHY-L, ASHY-SIL, CB-ASHY-L, CB-ASHY-SIL, GRV-ASHY-L, GR-L, GR-SIL, SIL, CB-L, CB-SIL, CBV-ASHY-L
Clay content - 18 to 27 percent
Rock fragment content - 0 to 25 percent gravel, 0 to 25 percent cobbles, 0 to 50 percent total
Reaction - moderately acid to neutral
Bt horizon
Hue - 7.5YR or 10YR
Value - 4 to 6 dry, 3 to 5 moist
Chroma - 2 to 4 dry or moist
Reaction - moderately acid to neutral
Upper part
Textures - CBV-L, CBV-CL, GRV-L, CBV-SIL, CBV-SICL, GRV-SIL, GRV-SICL, GRV-CL, GRX-SICL, CBX-CL, or CBX-SICL
Clay content - 18 to 35 percent
Rock fragments - 10 to 70 percent gravel, 0 to 35 percent cobbles, 0 to 10 percent stones, 35 to 80 percent total
Lower part
Textures - STV-SIL, STV-L, STX-L, CBV-L, GRV-L, CBV-SIL, CBV-CL, CBV-SICL, GRV-SIL, GRX-SICL, GRV-SICL, GRX-SIL, CBX-SICL, or CBX-CL
Clay content - 18 to 40 percent
Rock fragments - 20 to 65 percent gravel, 10 to 65 percent cobbles, 0 to 25 percent stones, 40 to 90 percent total
BC or 2C horizons (when present)
Value - 3 to 5 moist and 4 to 6 dry
Chroma - 3 or 4 moist
Texture - STX-L, CBX-L
Clay content - 12 to 23 percent
Rock fragment - 20 to 35 percent gravel, 40 to 55 percent cobbles, 10 to 50 percent stones, 70 to 90 percent total
Reaction - moderately acid to neutral
2Bt horizon (when present)
Textures - CBV-C, CBV-SIC, GRX-SIC, CB-C
COMPETING SERIES: These are the Getaway, Klicker, Larabee, Millerflat, Stemilt, and Sycreek series. Getaway soils have a mollic epipedon 20 to 35 inches thick. Klicker and Larabee soils are 20 to 40 inches to bedrock. Millerflat soils have a mollic epipedon 20 to 30 inches thick and redoximorphic features with chroma of 2 or less at 20 to 30 inches. Stemilt soils are dry for 60 to 75 days in late summer and fall. Sycreek soils are dry for 60 to 75 days in late summer and fall and have a 2CBd horizon at 35 to 45 inches.
The Conwayridge, Ginserly (T), Imnaha, Loganvalley (T), Masonic, Needhill, Roundbarn, Saturday, and Wilt series have similar classification except for mixed mineralogy and superactive CEC activity class. Conwayridge soils have 10 to 18 percent clay in the pscs. Ginserly soils have a mollic epipedon 20 to 40 inches thick and are dry for 70 to 90 days. Imnaha, Masonic and Wilt soils are moderately deep to bedrock. Needhill soils have mollic epipedons 20 to 30 inches thick and are dry for 60 to 75 days in late summer and fall. Roundbarn soils have mollic epipedons 30 to 50 inches thick, are dry 90 to 100 days in late summer and fall, and have a paralithic contact at 40 to 60 inches. Saturday soils are dry for more than 60 consecutive days.
GEOGRAPHIC SETTING: Klickson soils are on north-facing side slopes of canyons, structural benches, escarpments on hills and the lower slopes of mountains. Slopes are 7 to 90 percent. They formed in mixed loess and ash and material weathered from residuum and colluvium from Columbia River basalt. Elevations range from 1,000 to 5,300 feet in Idaho and up to 6,000 feet in Oregon. The average annual precipitation is typically 20 to 35 inches but ranges to 17 inches in Oregon. The average annual temperature is 40 to 45 degrees F. The frost-free period is 70 to 125 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Suloaf, Bluesprin, Wapshilla Speigle and Keuterville soils. Suloaf soils are fine-loamy and are on canyon sides and mountain side slopes. Bluesprin and Keuterville soils have a mesic soil temperature regime and are on canyon side slopes. Wapshilla soils have a cryic soil temperature regime ,have an ochric epipedon and are on mountain side slopes and canyon sides. Speigle soils are mesic and are on canyon sides.
DRAINAGE AND PERMEABILITY: Well drained, rapid and very rapid runoff; permeability is moderately slow.
USE AND VEGETATION: Most is used for timber production. Potential natural vegetation is mainly Douglas-fir, ponderosa pine, mallow ninebark, creambush oceanspray, and common snowberry.
DISTRIBUTION AND EXTENT: North central Idaho and northeastern Oregon and Washington. MLRA 43c; The series is moderately extensive.
MLRA OFFICE RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Idaho County, Idaho, 1976.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Mollic epipedon - the zone from 0.5 to 15 inches (A and A2 horizons)
Argillic horizon - the zone from 21 to 60 inches (the Bt1 and Bt2 horizons)
Particle-size control section - the zone from 21 to 41 inches (part of the Bt1 horizon)
Vitrandic feature - the zone from .5 to 21 inches (the A1, A2, and BA horizons)
Depths to diagnostic horizons and features are measured from the top of the first mineral layer.
Series revision 02/04 to remove discontinuity in Bt1 horizon based on the highly mixed ash influence and lack of an ash mantle.
ADDITIONAL DATA: There is partial laboratory data for this pedon. The NSSL laboratory number is 93P-583 and the soil survey sample number is S93ID-049-004.