LOCATION VICKTON                 ID

Established Series
Rev. RG/HBM/RGK
05/2018

VICKTON SERIES

Landscape--lava fields, plains
Landform--lava flows, depressions
Slope--0 to 12 percent
Parent material--loess or loess-influenced alluvium over basalt
Mean annual precipitation--about 350 mm
Mean annual air temperature--about 5 degrees C
Depth class--deep
Drainage class--well drained
Soil moisture regime--xeric
Soil temperature regime--frigid

TAXONOMIC CLASS: Fine-loamy, mixed, superactive, frigid Calcic Argixerolls

TYPICAL PEDON: Vickton loam in an area of rangeland (Colors are for dry soil unless otherwise noted.)

A--0 to 10 cm; brown (10YR 5/3) loam, very dark grayish brown (10YR 3/2) moist; moderate medium and thick platy structure parting to moderate medium granular; slightly hard, very friable, slightly sticky and slightly plastic; many very fine and fine and few medium roots; many fine tubular pores; neutral (pH 7.2); clear smooth boundary

Bt--10 to 25 cm; brown (10YR 5/3) loam, dark brown (10YR 3/3) moist; moderate medium prismatic structure parting to moderate medium and coarse subangular blocky; slightly hard, friable, slightly sticky and slightly plastic; many very fine and fine and few medium roots; many fine tubular pores; many thin clay films on ped faces and in pores; slightly alkaline (pH 7.6); clear smooth boundary

Bk1--25 to 61 cm; pale brown (10YR 6/3) loam, brown (10YR 5/3) moist; moderate fine and medium subangular blocky structure; hard, firm, slightly sticky and slightly plastic; many very fine and few medium roots; many fine tubular pores; 5 percent insect casts weakly cemented with calcium carbonate; violently effervescent (13 percent calcium carbonate equivalent); slightly alkaline (pH 7.8); clear smooth boundary

Bk2--61 to 99 cm; light gray (10YR 7/2) loam, brown (10YR 5/3) moist; massive; hard, friable, slightly sticky and slightly plastic; common very fine and fine roots; many very fine tubular pores; 5 percent insect casts weakly cemented with calcium carbonate; violently effervescent (21 percent calcium carbonate equivalent); moderately alkaline (pH 8.0); clear smooth boundary

Bk3--99 to 119 cm; white (10YR 8/1) cobbly fine sandy loam, very pale brown (10YR 7/3) moist; massive; slightly hard, very friable, slightly sticky and slightly plastic; common very fine roots; common fine tubular pores; 5 percent gravel and 15 percent cobbles; calcium carbonate coatings on bottom of rock fragments; violently effervescent (30 percent calcium carbonate equivalent); strongly alkaline (pH 8.6); smooth abrupt boundary

2R--119 cm; unweathered vesicular basalt

TYPE LOCATION: Clark County, Idaho; latitude 44.21320 degrees north, longitude 112.10350 degrees west, datum WGS 84

RANGE IN CHARACTERISTICS:
Mean annual soil temperature--3.9 to 6.7 degrees C
Depth to bedrock--100 to 150 cm
Thickness of mollic epipedon--25 to 50 cm
Depth to secondary calcium carbonates--25 to 56 cm

Particle-size control section (weighted averages)
Clay content--23 to 34 percent
Total rock fragment content--0 to 14 percent

A horizon
Value--4 or 5 dry, 2 or 3 moist
Chroma--1 to 3 dry, 2 or 3 moist
Texture (less than 2-mm fraction)--silt loam, loam
Clay content--16 to 26 percent
Gravel content--0 to 14 percent
Reaction--pH 6.6 to 7.8
Thickness--8 to 30 cm

Bt horizon
Value--4 or 5 dry, 2 or 3 moist
Chroma--2 or 3 dry or moist
Texture (less than 2-mm fraction)--silt loam, loam, silty clay loam
Clay content--23 to 35 percent
Gravel content--0 to 14 percent
Reaction--pH 7.4 to 7.8
Thickness--8 to 25 cm

Bk horizon
Value--6 to 8 dry, 5 to 7 moist
Chroma--1 to 3 dry or moist
Texture (less than 2-mm fraction)--silt loam, loam, silty clay loam, fine sandy loam
Clay content--16 to 30 percent
Total rock fragment content--0 to 30 percent
Gravel content--0 to 30 percent
Cobble content--0 to 30 percent
Calcium carbonate equivalent--10 to 35 percent
Reaction--pH 7.4 to 8.4

COMPETING SERIES:
Bess, Cedarpoint, Chesnimnus, Fewkes, Jestesen, Pegram, Swisbob, Vicking--very deep to lithic contact
McCarey, Pinehollow, Redpine--moderately deep to paralithic contact

GEOGRAPHIC SETTING:
Elevation--1430 to 1980 m
Mean annual precipitation--300 to 525 mm
Mean annual air temperature--2.8 to 7.2 degrees C
Frost-free period--70 to 100 days

GEOGRAPHICALLY ASSOCIATED SOILS: None listed

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class--well drained
Saturated hydraulic conductivity (Ksat)--1 to 50 um/sec

USE AND VEGETATION:
Major use--rangeland
Potential natural vegetation--mountain big sagebrush, antelope bitterbrush, bluebunch wheatgrass, Idaho fescue, arrowleaf balsamroot, prairie Junegrass, thickspike wheatgrass, western wheatgrass, Nevada bluegrass, Letterman's needlegrass

DISTRIBUTION AND EXTENT: Small extent in southeastern Idaho; MLRAs 11 and 13

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

SERIES ESTABLISHED: Butte County, Idaho; 1997

REMARKS:
Diagnostic horizons and other features recognized in this pedon
Mollic epipedon--zone from the surface to a depth of 25 cm (A and Bt horizons)
Argillic horizon--zone from 10 to 25 cm (Bt horizon)
Calcic horizon--zone from 25 to 119 cm (Bk horizon)
Depth to lithic contact--119 cm
Particle-size control section--zone from 10 to 25 cm (Bt horizon)

Taxonomic version--Twelfth Edition, 2014

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National Cooperative Soil Survey
U.S.A.