LOCATION AKBASH                  ID

Established Series
IRD RGK/CBK/EED
09/2018

AKBASH SERIES

Landscape--lava fields
Landform--lava flows
Slope--0 to 12 percent
Parent material--alluvium over basalt residuum
Mean annual precipitation--about 400 mm
Mean annual air temperature--about 4 degrees C
Depth class--moderately deep
Drainage class--well drained
Soil moisture regime--xeric
Soil temperature regime--frigid
TAXONOMIC CLASS: Fine-loamy, mixed, superactive, frigid Calcic Pachic Haploxerolls

TYPICAL PEDON: Akbash loam on a 3-percent slope in an area of rangeland at an elevation of 1838 m

A1--0 to 4 cm; loam, dark brown (10YR 3/3) dry, very dark brown (10YR 2/2) moist; weak fine granular structure; slightly hard, very friable, slightly sticky and slightly plastic; many very fine and fine and few medium and coarse roots; many very fine irregular pores; 1 percent gravel; moderately acid (pH 5.8); clear smooth boundary

A2--4 to 20 cm; loam, dark brown (10YR 3/3) dry, very dark brown (10YR 2/2) moist; moderate weak subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; many very fine and fine and few medium and coarse roots; many very fine tubular pores; 2 percent gravel; slightly acid (pH 6.5); clear wavy boundary

Bw1--20 to 40 cm; loam, brown (10YR 5/3) dry, dark brown (10YR 3/3) moist; strong medium subangular blocky structure; very hard, friable, slightly sticky and slightly plastic; common very fine and fine roots and few medium roots; many very fine tubular pores; 10 percent noncemented cicada nodules; 5 percent gravel; neutral (pH 7.0); gradual wavy boundary

Bw2--40 to 59 cm; loam, brown (10YR 5/3) dry, dark brown (10YR 3/3) moist; strong medium subangular blocky structure; hard, friable, slightly sticky and slightly plastic; common very fine and fine and few medium roots; many very fine tubular pores; 15 percent noncemented cicada nodules; 5 percent gravel and 1 percent cobbles; neutral (pH 7.3); clear wavy boundary

Bkq1--59 to 84 cm; loam, light brownish gray (10YR 6/2) dry, brown (10YR 5/3) moist; moderate fine subangular blocky structure; hard, friable, slightly sticky and slightly plastic; few very fine and fine roots; many very fine tubular pores; 25 percent moderately cemented cicada nodules; 5 percent gravel and 5 percent cobbles; disseminated calcium carbonates and many veins of calcium carbonates; many coatings of calcium carbonates on all sides of rock fragments; violently effervescent; moderately alkaline (pH 8.1); clear wavy boundary

Bkq2--84 to 97 cm; loam, light gray (10YR 7/2) dry, pale brown (10YR 6/3) moist; moderate medium platy structure; hard, firm, slightly sticky and slightly plastic; few very fine roots; many very fine tubular pores; 10 percent moderately cemented cicada nodules; 5 percent gravel and 5 percent cobbles; disseminated calcium carbonates and common veins of calcium carbonates; many coatings of calcium carbonates on all sides of rock fragments; violently effervescent; moderately alkaline (pH 8.0); abrupt wavy boundary

2R--97 cm; lime-coated basalt

TYPE LOCATION: Clark County, Idaho, about 20.1 km northeast of Dubois, Idaho; about 256 m south and 20 m east of the northwest corner of section 11, T. 11 N., R. 37 E.; Gardner Lake U.S. Geological Survey quadrangle; latitude 44.30113 degrees north, longitude 112.07388 west, datum WGS 84 (coordinates determined with a GPS)

RANGE IN CHARACTERISTICS:
Mean annual soil temperature--4 to 7 degrees C
Depth to bedrock--50 to 100 cm
Thickness of mollic epipedon--50 to 89 cm
Depth to calcic horizon--50 to 89 cm

Particle-size control section
Clay content--16 to 27 percent
Total rock fragment content--0 to 10 percent

A horizon
Value--2 or 3 dry or moist
Chroma--2 or 3 dry or moist
Texture--loam, gravelly loam
Gravel content--1 to 20 percent
Reaction--5.1 to 6.5 (moderately acid to slightly acid)
Thickness--13 to 30 cm

Bw horizon
Value--4 or 5 dry, 2 or 3 moist
Chroma--2 or 3 dry or moist
Gravel content--1 to 15 percent
Pararock fragment content--10 to 15 percent
Reaction--6.6 to 7.3 (neutral)
Combined thickness--33 to 81 cm

Bkq horizon
Value--6 or 7 dry, 5 or 6 moist
Chroma--2 or 3 dry or moist
Texture--loam, very fine sandy loam
Total rock fragment content--0 to 20 percent
Gravel content--0 to 5 percent
Cobble content--0 to 15 percent
Pararock fragment content--10 to 25 percent
Calcium carbonate equivalent--10 to 35 percent
Reaction--7.9 to 8.4 9 (moderately alkaline)
Combined thickness--30 to 51 cm

COMPETING SERIES:
Maremma, Ricrest--lithic contact at a depth of more than 150 cm (very deep)

GEOGRAPHIC SETTING:
Elevation--1670 to 1980 m
Climate--warm summers, cold winters
Mean annual air temperature--3 to 6 degrees C
Mean annual precipitation--305 to 510 mm
Frost free season--70 to 95 days

GEOGRAPHICALLY ASSOCIATED SOILS: None

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class--well drained
Saturated hydraulic conductivity (Ksat)--high throughout

USE AND VEGETATION:
Use--livestock grazing
Potential natural vegetation--mountain big sagebrush, antelope bitterbrush, Idaho fescue, bluebunch wheatgrass, arrowleaf balsamroot, Columbia needlegrass

DISTRIBUTION AND EXTENT: Eastern Idaho Plateaus, Idaho; MLRA 13; small extent

SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Portland, Oregon

SERIES ESTABLISHED: Clark County, Idaho; 2018

REMARKS:
Diagnostic horizons and other features recognized in this pedon
*Mollic epipedon (pachic)--zone from the surface to a depth of 59 cm
*Calcic horizon--zone from 59 to 97 cm
*Particle-size control section--zone from 25 to 97 cm

ADDITIONAL DATA:
Laboratory data--pedon number S07ID033001; Kellogg Soil Survey Laboratory, Lincoln, NE

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National Cooperative Soil Survey
U.S.A.