LOCATION CARLINTON ID
Established Series
Rev. PNP/RL/RJS
06/2016
CARLINTON SERIES
The Carlinton series consists of moderately deep to a fragipan, moderately well drained soils on hills and ridges on basalt plateaus or on mountain slopes and canyon benches. They formed in material weathered from loess and reworked loess with an influence of volcanic ash. Saturated hydraulic conductivity is moderately high above the fragipan and moderately low through the fragipan. Slope ranges from 2 to 40 percent. The average annual air temperature is about 43 degrees F and the average annual precipitation is about 27 inches.
TAXONOMIC CLASS: Fine-silty, mixed, superactive, frigid Vitrandic Fragixeralfs
TYPICAL PEDON: Carlinton ashy silt loam - grazed forest - on a northeast-facing slope of 5 percent at 3,200 feet elevation. (Colors are for dry soil unless otherwise stated). When described on September 1979, the soil was nearly dry.
Oi--0 to 1.5 inches; undecomposed moss, twigs and leaves.
A--1.5 to 8 inches; dark grayish brown (10YR 4/2) ashy silt loam, very dark brown (10YR 2/2) moist; weak fine and medium subangular blocky structure parting to weak fine granular; slightly hard, friable, slightly sticky and slightly plastic; many very fine, fine, medium and coarse roots; many very fine irregular pores; neutral (pH 7.0); clear wavy boundary. (2 to 6 inches thick)
AB--8 to 11 inches; brown (10YR 5/3) ashy silt loam, very dark grayish brown (10YR 3/2) moist; moderate fine and medium subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; many very fine, fine, medium and coarse roots; many very fine and common fine tubular pores; neutral (pH 6.8); gradual wavy boundary. (0 to 5 inches thick)
Bw--11 to 22 inches; pale brown (10YR 6/3) silt loam, dark yellowish brown (10YR 4/4) moist; moderate fine and medium subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; common very fine and many fine, medium and coarse roots; many very fine and fine tubular pores; slightly acid (pH 6.4); clear wavy boundary. (4 to 13 inches thick)
B/E--22 to 35 inches; B- light yellowish brown (10YR 6/4) silt loam, strong brown (7.5YR 4/6) moist, E- light gray (10YR 7/2), silt loam, brown (10YR 5/3) moist; weak fine prismatic structure parting to moderate fine subangular blocky; hard, firm, slightly sticky and slightly plastic; many very fine, fine and medium roots; many very fine and fine tubular pores; few distinct clay films lining pores and on faces of peds of B material; about 60 percent of horizon is B material and 40 percent is uncoated silt grains (E material); few fine distinct strong brown (7.5YR 5/8) masses of iron accumulation in E material; few rounded iron and manganese concretions less than 2 mm in size; moderately acid (pH 5.8); abrupt wavy boundary. (7 to 16 inches thick)
Btxb1--35 to 55 inches; light yellowish brown (10YR 6/4) silty clay loam, strong brown (7.5YR 5/6) moist; strong medium and coarse prismatic structure; very hard, very firm and brittle, moderately sticky and moderately plastic; few very fine, fine and medium flattened roots on faces of the peds; many very fine and fine tubular pores; many distinct and common prominent clay films lining pores and on faces of peds; dark organic stains are on faces of peds; common iron-manganese concretions 2 to 3 mm in size; much speckling of uncoated silt grains within matrix of peds; moderately acid (pH 5.8); gradual wavy boundary.
Btxb2--55 to 62 inches; light yellowish brown (10YR 6/4) silty clay loam, dark yellowish brown (10YR 4/6) moist; moderate coarse and very coarse prismatic structure; very hard, very firm and brittle, moderately sticky and moderately plastic; few very fine and fine flattened roots on faces of the peds; many very fine and fine tubular pores: many distinct and common prominent clay films lining pores and on faces of peds; some organic stains on faces of peds; much speckling of uncoated silt grains within matrix of peds; few iron-manganese concretions 2 to 3 mm in size; moderately acid (pH 6.0). (combined thickness of Btxb horizons is 18 to 27 inches)
TYPE LOCATION: Clearwater County, Idaho; about 3 miles northwest of Ahsahka, Idaho; about 2,250 feet north and 300 feet west of the southeast corner of section 20, T. 37 N., R. 1 E.; Latitude - 46 degrees, 32 minutes, 0916 seconds North and Longitude - 116 degrees, 20 minutes, 523 seconds West; USGS Ahsahka Quadrangle.
RANGE IN CHARACTERISTICS:
Depth to fragipan - 22 to 40 inches
Depth to bedrock - greater than 60 inches
Solum thickness - greater than 60 inches
Moisture control section - dry 45 to 60 days following the summer solstice, moist - rest of the year
Average annual soil temperature - 41 to 46 degrees F.
Average summer soil temperature - 59 to 63 degrees F. without an O horizon
Depth to seasonally perched water table - 14 to 36 inches from February to May
Vitrandic feature thickness - 7 to 23 inches
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 - 19 to 35 percent
15-bar water retention on air dried samples - 7 to 10 percent
Moist bulk density - 1.20 to 1.35 g/cc
A and AB horizons (Ap horizon in some pedons)
Hue - 5YR to 10YR
Value - 3 to 6 dry, 2 to 4 moist
Chroma - 1 to 4, dry and moist
Clay content - 10 to 27 percent
Rock fragment content - 0 to 2 percent gravel
Reaction - strongly acid to neutral
Bw horizon (this may be a Bt horizon in some pedons)
Hue - 5YR to 10YR
Value - 4 to 7 dry, 3 to 6 moist
Chroma - 3 to 6 dry or moist
Clay content - 11 to 30 percent
Texture - silt loam, silty clay loam, ashy silt loam
Rock fragment content - 0 to 5 percent gravel
Reaction - strongly acid to neutral
E horizons are present in some pedons.
B/E or E/B horizons (this may be an EBt in some pedons)
Color (B part)
Hue - 7.5YR or 10YR
Value - 4 to 6 dry, 3 to 6 moist
Chroma - 3 to 6, dry or moist
Color (E part)
Value - 6 to 8 dry, 4 to 7 moist
Chroma - 2 to 4, dry or moist
Clay content - 21 to 30 percent
Texture - silt loam, silty clay loam
Rock fragment content - 0 to 3 percent gravel
Reaction - strongly acid to neutral
BtxbE horizons are present in some pedons
Btxb horizons
Hue - 7.5YR or 10YR
Value - 5 to 7 dry, 3 to 5 moist
Chroma - 3 to 6, dry and moist
Clay content - 20 to 38 percent
Texture - silt loam, silty clay loam
Rock fragment content - 0 to 5 percent gravel
Bulk density - 1.5 to 1.8 g/cc
Reaction - very strongly acid to neutral
Btb horizons are present in some pedons.
COMPETING SERIES: There are no competing series.
GEOGRAPHIC SETTING: The Carlinton soils are on loess-covered hills, mountains, basalt plateaus and benches. Slopes range from 2 to 40 percent. These soils formed in loess and reworked loess with an influence of volcanic ash at elevations of 1,100 to 4,500 feet (335 to 1372 meters). The average annual air temperature ranges from 40 to 46 degrees F, with an average annual precipitation of 22 to 45 inches (559 to 1143 mm). The average frost-free period is from 80 to 125 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Cavendish,
Kauder,
Kruse, and
Taney soils. Cavendish and Kruse soils do not have a fragipan, are fine-loamy and are on convex areas. Kauder soils have a udic moisture regime and are on flat or concave areas. Taney soils have a mollic epipedon and are on concave slopes and northwest exposures.
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Moderately well drained; moderately high saturated hydraulic conductivity above the fragipan and moderately low saturated hydraulic conductivity through the fragipan. There is a seasonally perched water table at depths of 14 to 36 inches from February to May.
USE AND VEGETATION: Used mainly for timber production, hay, pasture, livestock grazing, and some areas of dry cropland production. Potential natural vegetation is mainly grand fir, Douglas-fir, ponderosa pine, western larch, Pacific yew, with an understory of creambrush oceanspray, common snowberry, myrtle pachystima, mallow ninebark and American trailplant.
DISTRIBUTION AND EXTENT: The series is moderately extensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Bozeman, Montana
SERIES ESTABLISHED: Lewis and Nez Perce Counties, Idaho, 1995.
REMARKS: Diagnostic horizons and other features recognized in this pedon are:
Ochric epipedon - The zone from 0 to 11 inches (Oi, A and AB horizons).
Argillic horizon - The zone from 22 to 62 inches (B/E, Btxb1 and Btxb2 horizons).
Fragipan- The zone from 35 to 62 inches (Btxb1 and Btxb2 horizons).
Oxyaquic feature - the zone beginning at 22 inches having saturation with water for 30 or more cumulative days.
Particle-size control section - The zone from 22 to 35 inches (B/E horizon).
Depths to diagnostic horizons and features are measured from the top of the first mineral layer.
ADDITIONAL DATA: This series has been sampled at the following sites:
Laboratory sample number - 86P882 and soil survey sample number - S86ID-061-005
Laboratory sample number - 95P130 and soil survey sample number - S94ID-035-003
Laboratory sample number - 85P63A and soil survey sample number - S85ID-035-001
National Cooperative Soil Survey
U.S.A.