LOCATION TANEY ID
Established Series
Rev. AEK/SBC/BDG
09/2013
TANEY SERIES
The Taney series consists of moderately deep to fragipan, moderately well drained soils that formed mainly in loess or reworked loess with an influence of volcanic ash in the upper part. Taney soils are on dissected hills and hills on basalt plains, plateaus and structural benches. Saturated hydraulic conductivity is moderately high above the fragipan and low through the fragipan. Slope ranges from 0 to 35 percent. The average annual precipitation is about 51 centimeters and the average annual temperature is about 6.1 degrees C.
TAXONOMIC CLASS: Fine-silty, mixed, superactive, frigid Vitrandic Argixerolls
TYPICAL PEDON: Taney ashy silt loam, forested; on an 8 percent northwest-facing slope at an 874 meter elevation. Pedon initially described on August 13, 1965, and was redescribed on July 18, 2002. When redescribed, the soil was dry to 25 centimeters and slightly moist from 25 to 152 centimeters. (Colors are for moist soil unless otherwise noted.)
Oi -- 0 to 3 centimeters; slightly decomposed needles, twigs, leaves, bark and cones.
Oe -- 3 to 5 centimeters; moderately decomposed organic matter mixed with 1980 Mt. St. Helens volcanic ash
A -- 5 to 10 centimeters; very dark gray (10YR 3/1) ashy silt loam, grayish brown (10YR 5/2) dry; weak fine subangular blocky structure parting to moderate very fine and fine granular; slightly hard, friable, slightly sticky and slightly plastic; many very fine, fine, common medium and few coarse roots; many very fine tubular pores; neutral (pH 7.3); clear wavy boundary. (3 to 23 centimeters thick)
BA -- 10 to 38 centimeters; very dark grayish brown (10YR 3/2) ashy silt loam, brown (10YR 5/3) dry; weak and moderate fine and medium subangular blocky structure; slightly hard, friable; slightly sticky and slightly plastic; many very fine, fine, common medium and few coarse roots; many very fine and few medium tubular pores; slightly acid (pH 6.5); gradual wavy boundary. (0 to 28 centimters thick)
Bw -- 38 to 55 centimeters; dark brown (10YR 3/3) silt loam, brown (10YR 5/3) dry; weak fine and medium subangular blocky structure; moderately hard, friable; slightly sticky and slightly plastic; many very fine, common medium and few coarse roots; many very fine, few fine and medium tubular pores; few very fine manganese masses; neutral (pH 6.6); gradual wavy boundary. (10 to 23 centimeters thick)
Bt -- 55 to 74 centimeters; dark brown (10YR 3/3) silt loam, pale brown (10YR 6/3) dry; weak and moderate medium subangular blocky structure; hard, friable, slightly sticky and slightly plastic; common very fine, medium and few coarse roots; many very fine, fine and few medium tubular pores; common faint continuous clay films on faces of peds; few very fine manganese masses; slightly acid (pH 6.5); abrupt wavy boundary. (0 to 18 centimeters thick)
EBc -- 74 to 79 centimeters; light olive brown (2.5Y 5/3) silt loam, light gray (2.5Y 7/2) dry; weak fine and medium subangular blocky structure; moderately hard, friable, slightly sticky and slightly plastic; common very fine, few medium and coarse roots; many very fine, fine and few medium tubular pores; about 90 percent of horizon is uncoated silt grains (E material) and 10 percent B material; many very fine and few fine iron-manganese concretions; common fine prominent yellowish brown (10YR 5/4) iron masses, light yellowish brown (10YR 6/4)dry; very strongly acid (pH 4.6); abrupt wavy boundary. (0 to 13 centimeters thick)
Btxcb1 -- 79 to 94 centimeters; mixed brown (10YR 4/3) and dark yellowish brown (10YR 4/4) silty clay loam, mixed yellowish brown (10YR 5/4) and light yellowish brown (10YR 6/4) dry; moderate medium prismatic structure; very hard, extremely firm and brittle, moderately sticky and moderately plastic; common very fine, few fine, medium and coarse roots between peds; many very fine, fine and few medium tubular pores; many prominent discontinuous brown (7.5YR 4/3) dry clay films on faces of peds; about 15 percent white (10YR 8/1) dry E material on vertical and top faces of peds; common very fine and few fine iron-manganese concretions; about 60 percent fragic material; very strongly acid (pH 4.7); gradual wavy boundary.
Btxcb2 -- 94 to 135 centimeters; yellowish brown (10YR 5/4) silty clay loam, light yellowish brown (10YR 6/4) dry; weak fine and medium prismatic structure; very hard, extremely firm and brittle, moderately sticky and moderately plastic; few very fine, fine and medium roots between peds; many very fine, fine and few medium tubular pores; many prominent discontinuous brown (7.5YR 4/3) dry clay films on faces of peds and in pores, and few continuous light gray (10YR 7/2) dry silt coats and E material on vertical and top faces of peds; about 75 percent fragic material; strongly acid (pH 5.1); gradual wavy boundary. (combined thickness of Btxcb horizons is 35 to 63 centimeters thick)
Btxb -- 135 to 152 centimeters; yellowish brown (10YR 5/4) silty clay loam, very pale brown (10YR 7/4) dry; weak fine and medium prismatic structure; very hard, extremely firm, moderately sticky and moderately plastic; few very fine, fine and medium roots between peds; many very fine and fine tubular pores; many distinct continuous brown (7.5YR 4/3) dry clay films on faces of peds, and few discontinuous light gray (10YR 7/2) dry silt coats and E material on vertical and top faces of peds; few very fine iron-manganese concretions; about 60 percent fragic material; slightly acid (pH 6.1).
TYPE LOCATION: Benewah County, Idaho; about 5.5 miles west of the town of Plummer, Idaho; about 571 meters north and 76 meters west of the southeast corner of section 18, T.46N., R.5W.; Latitude 47 degrees, 19 minutes, 40 seconds North; Longitude 117 degrees, 00 minutes, 08 seconds West; NAD 83; USGS Tekoa Mountain quadrangle.
RANGE IN CHARACTERISTICS:
Soil moisture - Usually dry for 45 to 60 consecutive days mid-July to mid-September, moist mid-September to mid-July (xeric moisture regime)
Average annual soil temperature - 5.0 to 8.3 degrees C
Average summer soil temperature - 10.6 to 12.8 degrees C with an O horizon (frigid temperature regime)
Thickness of mollic epipedon - 25 to 50 centimeters
Depth to base of argillic - 114 to 152 centimeters or more
Depth to fragipan - 69 to 102 centimeters
Particle-size control section (weighted average): Clay content - 18 to 20 percent
Vitrandic feature thickness - 25 to 51 centimeters
Volcanic glass content in the 0.02 to 2.0 mm fraction - 5 to 20 percent
Acid-oxalate extractable Al plus 1/2 Fe - 0.4 to 1.0 percent
Phosphate retention - 30 to 40 percent
15-bar water retention on air dried samples - 10 to 13 percent
Moist bulk density - 1.00 to 1.45 g/cc
A horizon (Ap horizons when present)
Hue - 10YR or 7.5YR
Value - 3 to 5 dry, 2 or 3 moist
Chroma - 1 to 3, dry or moist
Texture - ashy silt loam
Clay content - 10 to 27 percent
Reaction - strongly acid to neutral
BA horizon
Hue - 10YR or 7.5 YR
Value - 4 or 5 dry, 2 or 3 moist
Chroma - 2 or 3, dry or moist
Texture - ashy silt loam
Clay content - 15 to 23 percent
Reaction - moderately acid to neutral
Bw or Bt horizons
Hue - 10YR
Value - 4 to 6 dry, 3 to 5 moist
Chroma - 2 to 4, dry or moist
Texture - silt loam
Clay content - 12 to 25 percent
Reaction - moderately acid to neutral
EBc
Hue - 10YR
Value - 6 or 7 dry, 4 or 5 moist
Chroma - 2 to 4 dry, 3 moist
Texture - silt loam
Clay content - 10 to 20 percentReaction - very strongly acid to moderately acid
Ec or E horizons (present in some pedons)
Hue - 10YR or 2.5Y
Value - 6 to 8 dry, 3 to 6 moist
Chroma - 1 to 4 dry, 3 or 4 moist
Texture - silt loam, silt
Clay content - 10 to 20 percent
Rock fragments - 0 to 5 percent gravelReaction - strongly acid to slightly acid
Btxcb horizons (Btxb/E in some pedons)
Hue - 7.5YR or 10YR
Value - 5 or 6 dry, 3 to 5 moist
Chroma - 3 to 6 dry, 2 to 6 moist
Texture - silty clay loam, silt loam
Clay content - 23 to 36 percent
Gravel content - 0 to 5 percent
Total rock fragment content - 0 to 5 percent
Reaction - very strongly acid to slightly acid
Bulk density - 1.60 to 1.75 g/cc
Btxb horizons
Hue - 7.5YR or 10YR
Value - 5 to 7 dry, 3 to 5 moist
Chroma - 3 or 4, dry or moist
Texture - silty clay loam, silt loam, silty clay
Clay content - 20 to 42 percent
Gravel content - 0 to 5 percent
Total rock fragment content - 0 to 5 percent
Reaction - moderately acid to neutral
Bulk density - 1.5 to 1.75 g/cc
Btb horizon (beneath the fragipan in some pedons)
Hue - 7.5YR or 10YR
Value - 5 to 7 dry, 3 to 5 moist
Chroma - 3 or 4, dry or moist
Texture - silty clay loam, silty clay
Clay content - 30 to 55 percent
Reaction - moderately acid to neutral
COMPETING SERIES: These are the
Hurwal and
Powwatka series. Hurwal soils have a mollic epipedon 51 to 76 centimeters thick, a lithic contact at 102 to 152 centimeters and do not have an albic horizon. Powwatka soils are 51 to 102 centimeters to a lithic contact.
GEOGRAPHIC SETTING: The Taney soils are on dissected hills and hills on basalt plains, plateaus, and structural benches. The soils formed in deep loess or reworked loess with an influence of volcanic ash in the upper part. Elevation is typically 700 to 1220 meters but may range down to (366 meters) on north-facing slopes. Slopes are 0 to 35 percent. The average annual precipitation is 610 to 940 millimeters, including 1.2 to 1.5 meters of snow. The average annual temperature is 4.4 to 7.7 degrees C. The frost-free period is 80 to 130 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Benewah,
Santa, and
Setters soils. Benewah soils on mountain footslopes, have an ochric epipedon, and do not have a fragipan. Santa soils on loess hills have an ochric epipedon and are less than 18 percent clay in the control section. Setters soils on loess hills, have more than 35 percent clay in the particle-size control section, and do not have a fragipan.
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Moderately well drained; slow to very rapid runoff; saturated hydraulic conductivity is moderately high above the fragipan and low in the fragipan. There is a seasonally perched water table at depths of 40 to 93 centimeters from November through June.
USE AND VEGETATION: These soils are used mainly for dryland small grain, hay, pasture and woodland. Potential natural vegetation is mainly Douglas fir and ponderosa pine, with an understory of common snowberry, white spirea, creambush oceanspray, mallow ninebark, Nootka rose, Woods rose, Columbia brome, sweetscented bedstraw and pinegrass.
DISTRIBUTION AND EXTENT: Northern Idaho; MLRA 9 and 43A. The series is of large extent; about 156,000 acres.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Benewah County, Idaho, 1975.
REMARKS: Diagnostic horizons and features recognized in this pedon:
Mollic epipedon - the zone from 5 to 55 centimeters (the A, BA and Bw horizons). Mollic epipedon may exclude the Bw in some pedons.
Albic horizon - the zone from 74 to 79 centimeters (the E/Bc horizon) with chroma never less than 3 moist.
Argillic horizon - the zone from 79 to 152 centimeters (the Btxcb1, Btxcb2 and Btxb horizons)
Vitrandic feature - the zone from 5 to 38 centimeters.
Oxyaquic feature - the zone beginning at 74 centimeters having saturation with water for 30 or more cumulative days.
Particle-size control section - the zone from 25 to 79 centimeters (part of the BA, the Bw, Bt and E/Bc horizons)
Fragipan - the zone from 79 to 152 centimeters(the Btxcb and Btxb horizons)
This pedon does not meet Albolls suborder criteria based on presence of moist chroma of 3 within the albic horizon and the E horizon (albic) does not lie directly below the mollic epipedon.
This pedon does not meet aquic subgroup criteria based on the absence of redox depletions (zones of chroma less than those in the matrix) within 75 cm of the mineral soil surface.
ADDITIONAL DATA: This soil has been sampled in Nez Perce County, Idaho by NSSL. Laboratory sample numbers 86P881, soil survey sample numbers S86ID-069-002 and S88ID-069-002 (88P23); Lewis County by NSSL S88ID-061-001 (88p924) and S85ID-061-054 (86P0242); Benewah County by NSSL 88ID009002 (88P026)and Clearwater County by NSSL S84ID-035-003 (85P640).
National Cooperative Soil Survey
U.S.A.