LOCATION CRANBERRY               ID

Established Series
Rev. ELR-BDG-EMM
06/2013

CRANBERRY SERIES

The Cranberry series consists of very deep, well drained soils formed in loess over basalt residuum with a thick mantle of volcanic ash. They are on hills on lava plateaus. Saturated hydraulic conductivity is moderately high and slopes range from 5 to 55 percent. The average annual precipitation is about 40 inches and the average annual air temperature is about 42 degrees F.

TAXONOMIC CLASS: Ashy over loamy, amorphic over mixed, superactive, frigid Alfic Udivitrands

TYPICAL PEDON: Cranberry ashy silt loam, forested on a 25 percent slope at 2720 feet elevation. Aspect is west. When described on October 23, 1997, the soil was moist throughout. (colors are for dry soil unless otherwise noted)

Oi--0 to 1 inch; partially decomposed needles, twigs and leaves.

Oe--1 to 2 inches; decomposed needles, leaves and twigs.

A--2 to 5 inches; brown (7.5YR 5/4) ashy silt loam, dark brown (7.5YR 3/4) moist; weak fine and medium granular structure; soft, very friable, nonsticky and nonplastic; many very fine roots throughout, common fine and medium roots throughout; many fine and very fine irregular pores; 1 percent fine rounded iron-manganese concretions; moderately acid (pH 6.0); clear wavy boundary. (1 to 4 inches thick)

Bw1--5 to 11 inches; light yellowish brown (10YR 6/4) ashy silt loam, brown (7.5YR 4/4) moist; weak fine and medium subangular blocky structure; soft, very friable, nonsticky and nonplastic; many very fine and common fine and medium roots throughout; many very fine and fine irregular pores; 1 percent fine rounded iron-manganese concretions; slightly acid (pH 6.2); clear wavy boundary. (6 to 12 inches thick)

Bw2--11 to 16 inches; light yellowish brown (10YR 6/4) ashy silt loam, brown (7.5YR 4/4) moist; weak fine and medium subangular blocky structure; soft, very friable, nonsticky and nonplastic; common very fine and fine roots throughout, few medium roots throughout; many very fine and fine irregular pores; 1 percent fine rounded iron-manganese concretions; slightly acid (pH 6.5); clear irregular boundary. (0 to 8 inches thick)

2Bt1--16 to 22 inches; light yellowish brown (10YR 6/4) silt loam, brown (7.5YR 4/3), moist; moderate fine and medium subangular blocky structure; slightly hard, friable, moderately sticky and moderately plastic; common very fine and fine roots throughout; many very fine and fine irregular pores, common medium irregular and tubular pores; common prominent dark yellowish brown (10YR 3/4) moist clay films on faces of peds; slightly acid (pH 6.5); clear wavy boundary. (4 to 12 inches thick)

2Bt2--22 to 32 inches; light brown (7.5YR 6/3) silt loam, brown (7.5YR 5/4) moist; moderate fine and medium subangular blocky structure; slightly hard, firm, moderately sticky and moderately plastic; common very fine and fine roots throughout; common very fine, fine and medium irregular and tubular pores; common distinct clay films on faces of peds; slightly acid (pH 6.5); clear wavy boundary. (5 to 14 inches thick)

2Bt3--32 to 40 inches; light yellowish brown (10YR 6/4) silty clay loam, brown (7.5YR 4/4) moist; moderate fine and medium subangular blocky structure; hard, very firm, very sticky and very plastic; common very fine and fine roots throughout; common very fine and fine and few medium irregular and tubular pores; common distinct clay films on faces of peds; slightly acid (pH 6.4); clear wavy boundary. (5 to 9 inches thick)

2Bt4--40 to 50 inches; very pale brown (10YR 7/4) silty clay loam, yellowish brown (10YR 5/4) moist; moderate medium subangular blocky structure; hard, very firm, moderately sticky and moderately plastic; common fine and very fine roots throughout; common fine and very fine irregular pores; common faint clay films on faces of peds; slightly acid (pH 6.2); clear wavy boundary. (0 to 15 inches thick)

3Btb1--50 to 57 inches; very pale brown (10YR 7/4) clay loam, yellowish brown (10YR 5/4) moist; moderate medium subangular blocky structure; hard, very firm, moderately sticky and moderately plastic; common fine and very fine roots throughout; common fine and very fine irregular pores; few faint clay films on faces of peds; moderately acid (pH 6.0); clear wavy boundary. (7 to 13 inches thick)

3Btb2--57 to 62 inches; very pale brown (10YR 7/4) clay loam, yellowish brown (10YR 5/4) moist; moderate medium subangular blocky structure; hard, very firm, moderately sticky and moderately plastic; common fine and very fine irregular pores; few faint clay films on faces of peds; 2 percent angular basalt gravel; moderately acid (pH 5.8).

TYPE LOCATION: Clearwater County, Idaho; about 7 miles northwest of Headquarters, Idaho; about 1400 feet north and 2650 feet west of the southeast corner of section 9, T 38N., R 4E.; Latitude - 46 degrees, 38 minutes, 53 seconds North; Longitude - 115 degrees, 57 minutes, 32 seconds West; USGS John Lewis Quadrangle.

RANGE IN CHARACTERISTICS:

Average annual soil temperature - 43 to 46 degrees F (frigid temperature regime.)
Soil moisture control section - usually moist year round and not dry for 45 consecutive days during June to October (Udic moisture regime).

Thickness of volcanic ash mantle - 14 to 18 inches
Volcanic glass content - 15 to 50 percent
Acid-Oxalate Al plus 1/2 Fe - 1.3 to 2.7 percent
Phosphate retention - 55 to 95 percent
15-bar water retention on air dried samples - 8.0 to 14.9 percent

A horizon
Hue - 10YR or 7.5YR
Value - 4 to 6 dry, 3 or 4 moist
Chroma - 3 to 6 dry; 2 to 4 moist
Clay content - 8 to 10 percent
Reaction - 5.6 to 6.5
Bulk density - 0.60 to 0.90 g/cc

Bw horizons
Hue - 10YR or 7.5YR
Value - 4 to 6 dry; 3 or 4 moist
Chroma - 4 to 6 dry; 3 or 4 moist
Clay content - 8 to 10 percent
Reaction - 5.6 to 6.5
Bulk density - 0.65 to 0.90 g/cc
Rock fragments - 0 to 1 percent gravel

2B/E horizon present in some profiles.

2Bt horizons (upper part)
Hue - 10YR, 7.5YR or 5YR
Value - 4 to 6 dry; 3 to 5 moist
Chroma - 3 or 4 dry or moist
Reaction - strongly acid to slightly acid
Rock fragments - 0 to 2 percent gravel
Texture - silt loam or silty clay loam
Clay content - 15 to 28 percent

2Bt horizons (lower part)
Hue - 10YR, 7.5YR, or 5YR
Value - 4 to 7 dry; 3 to 5 moist
Chroma - 3 to 6 dry; 3 or 4 moist
Reaction - 5.1 to 6.5
Rock fragments - 0 to 15 percent gravel
Texture - silt loam or silty clay loam
Clay content - 18 to 32 percent

3Btb horizons
Hue - 10YR, 7.5YR or 5YR
Value - 4 to 7 dry; 3 to 5 moist
Chroma - 3 to 8 dry; 4 to 6 moist
Reaction - 5.5 to 7.0
Rock fragments - 0 to 10 percent gravel; 0 to 40 percent paragravel
Texture - loam, silt loam, clay loam or silty clay loam
Clay content - 16 to 38 percent

3BC or 3C horizons present in some profiles.

COMPETING SERIES:

Brodeer soils: have 16 to 24 percent clay in the lower part of the argillic horizon

Chesley soils: are deep to a paralithic contact

Disalto soils: have textures of very fine sandy loam or fine sandy loam

Dworshak soils: have 15 to 45 percent coarse fragments in the lower part of the argillic horizon

Helmer soils: are shallow to a fragipan

Scand soils: have more than 30 perent mica flakes in the 3Bt horizon.

GEOGRAPHIC SETTING: Cranberry soils are on hills on lava plateaus at elevations of 2,500 to 3,400 feet (762 to 1036 meters). Slopes are 5 to 55 percent. The soil formed in loess over basalt residuum with a thick volcanic ash mantle. The average annual temperature is 38 to 44 degrees F. and the average annual precipitation is 30 to 50 inches (762 to 1270 mm). The frost free season is 50 to 110 days.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Elkridge, Grangemont, Bandmill and Riswold soils. Elkridge soils are on hills and canyon slopes and are loamy skeletal. Grangemont soils are on hills, have fragic characteristics and an andic surface. Bandmill soils are on low hills and structural benches on lava plateaus and have an andic surface. Riswold soils are on low hills and structural benches and have more than 25 percent rock fragments in the lower part of the argillic horizon.

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Well drained; moderately high saturated hydraulic conductivity.

USE AND VEGETATION: These soils are used for timber production, wildlife habitat, recreation and watershed. Potential natural vegetation is western redcedar, grand fir, Douglas-fir, and western larch with an understory of queencup beadlilly, goldthread, common snowberry, wild ginger, longtube twinflower, bunchberry dogwood, Hooker fairybells, trailing blackberry, starry false Solomons-seal, sweetscented bedstraw, American trailplant, common prince's pine, Saskatoon serviceberry, oceanspray, ninebark, Rocky Mountain maple, pacific yew, rattlesnake plantain, white trillium, wild rose, Columbia brome and windflower.

DISTRIBUTION AND EXTENT: North central Idaho. Cranberry soils are not extensive. MLRA 43A.

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Bozeman, Montana

SERIES PROPOSED: Clearwater County, Idaho, 1999.

REMARKS: Diagnostic horizons and features recognized in this pedon are:

Volcanic ash mantle - The zone from 2 to 16 inches (A, Bw1, Bw2 horizons).

Ochric epipedon - The zone from 2 to 5 inches (A horizon).

Cambic horizon - The zone from 5 to 16 inches (Bw1, Bw2 horizons).

Argillic horizon - The zone from 16 to 62 inches (2Bt1, 2Bt2, 2Bt3, 2Bt4, 3Btb1, 3Btb2 horizons).

Particle size control section - The zone from 2 to 42 inches (A, Bw1, Bw2, 2Bt1, 2Bt2, 2Bt3 and a portion of the 2Bt4 horizons).

The range of values listed under the Range in Characteristics for Volcanic glass etc. are estimates only.

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National Cooperative Soil Survey
U.S.A.