LOCATION LUND ID
Tentative Series
Proposed AR-KP-RJS
07/2017
LUND SERIES
Landform--mountain slopes
Slope--12 to 55 percent
Parent material--colluvium from limestone and dolomite
Mean annual precipitation--about 550 mm
Mean annual air temperature--about 3.0 degrees C
Depth class--very deep
Drainage class--well drained
Soil moisture regime--udic
Soil temperature regime--cryic
TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive Pachic Haplocryolls
TYPICAL PEDON: Lund very cobbly loam on a north-facing, forested mountain slope of 36 percent and an elevation of 2,058 meters (The soil was moist throughout when described on July 28, 2009.)
Oi--0 to 12 cm; slightly decomposed plant material; abrupt wavy boundary
A1--12 to 24 cm; very cobbly loam, dark gray (10YR 4/1) dry, black (10YR 2/1) moist; weak fine granular structure; soft, very friable, slightly sticky and slightly plastic; many very fine and common fine roots; common very fine, and fine tubular and irregular pores; 15 percent gravel, 15 percent cobbles, and 5 percent stones; neutral (pH 6.6); clear wavy boundary.
A2--24 to 53 cm; very cobbly loam, dark grayish brown (10YR 4/2) dry, black (10YR 2/1) moist; weak medium granular structure; soft, very friable, slightly sticky, and slightly plastic; many very fine and fine, and common medium roots; common very fine, many fine, and common medium tubular and irregular pores; 15 percent gravel, 20 percent cobbles, 10 percent stones; neutral (pH 6.9); clear wavy boundary.
Bw--53 to 115 cm; extremely stony loam, light brown (7.5YR 6/3) dry, brown (7.5YR 4/3) moist; weak medium subangular blocky structure; slightly hard, friable, slightly sticky, and slightly plastic; common very fine to medium roots; common very fine to medium tubular and irregular pores; 20 percent gravel, 15 percent cobbles, and 30 percent stones; neutral (pH 7.0); clear wavy boundary.
Bk--115 to 150 cm; extremely stony loam, pinkish gray (7.5YR 7/2) dry, light brown (7.5YR 6/3) moist; moderate medium subangular blocky structure; slightly hard, friable, moderately sticky, and moderately plastic; common very fine and fine roots; common very fine and fine tubular and irregular pores; 20 percent gravel, 15 percent cobbles, and 35 percent stones; 5 percent fine patchy soft masses of calcium carbonate, 15 percent calcium carbonate coats on the underside of rock fragments, and finely disseminated calcium carbonate; strongly effervescent; moderately alkaline (pH 7.9).
TYPE LOCATION: Caribou County, Idaho; about 8 kilometers northwest of Soda Springs, ID; located about 300 meters north and 720 meters east of the southwest corner of sec. 28, T. 8 S., R 41 W.; Alexander U.S. Geological Survey quadrangle; latitude 42.6951 degrees north, longitude 111.6729 degrees west, WGS 84.
RANGE IN CHARACTERISTICS:
Mean annual soil temperature--2.0 to 5.0 degrees C
Thickness of mollic epipedon--40 to 80 cm
Depth to secondary carbonates--100 to 150 cm
Particle-size control section
Clay content--averages 18 to 27 percent
Rock fragments--averages 35 to 60 percent
Oi horizon
Thickness: 2 to 12 cm
A1, A2 horizons
Value: 3 or 4 dry, 2 or 3 moist
Chroma: 1 to 3 dry, 1 or 2 moist
Texture (less than 2mm fraction): loam, silt loam
Clay content: 16 to 24 percent
Rock fragments: 20 to 50 percent--10 to 35 percent gravel, 10 to 20 percent cobbles, 2 to 10 percent stones
Reaction: pH 6.1 to 7.3
Thickness (combined thickness of A1, A2): 40 to 80 cm
Bw horizon
Hue: 7.5YR or 10YR dry or moist
Value: 4 to 6 dry, 3 to 4 moist
Chroma: 2 or 3 dry, 3 to 4 moist
Texture (less than 2mm fraction): loam, silt loam
Clay content: 18 to 27 percent
Rock fragments: 40 to 65 percent--20 to 40 percent gravel, 10 to 25 percent cobbles, 5 to 30 percent stones
Reaction: pH 6.6 to 7.5
Thickness: 25 to 65 cm
Bk horizon
Hue: 7.5YR or 10YR dry or moist
Value: 6 to 8 dry, 5 or 6 moist
Chroma: 2 or 3 dry, 2 to 4 moist
Texture (less than 2mm fraction): loam, silt loam
Clay content: 15 to 25 percent
Rock fragments: 50 to 70 percent--20 to 40 percent gravel, 10 to 25 percent cobbles, 10 to 40 percent stones
Calcium carbonate equivalent: 15 to 30
Reaction: pH 7.9 to 8.4
COMPETING SERIES:
Baconcamp: moderately deep to a lithic contact
Badgerton: xeric moisture regime
Badhap: xeric moisture regime
Behanco: deep to a lithic contact
Behanin: no secondary calcium carbonate
Belsac: moderately deep to a paralithic contact
Boatman: no secondary calcium carbonate
Boydhollow: xeric moisture regime
Bullrey: ustic moisture regime
Busterback: xeric moisture regime
Croesus: moderately deep to a lithic contact
Dressel: no secondary calcium carbonate
Gateview: no secondary calcium carbonate
Goodski: moderately deep to a lithic contact
Hapgood: xeric moisture regime
Harcany: xeric moisture regime
Hobacker: ustic moisture regime
Lionhead: xeric moisture regime
Lolon: ustic moisture regime
Marcetta: ustic moisture regime
Mundos: ustic moisture regime
Nagitsy: moderately deep to a lithic contact
Namela: moderately deep to a lithic contact
Nazaton: no secondary calcium carbonate
Papaspila: no secondary calcium carbonate
Parkcity: no secondary calcium carbonate
Poleline: deep to a lithic contact
Povey: xeric moisture regime
Snacreek: xeric moisture regime
Snopoc: xeric moisture regime
Splitbutte: moderately deep to a lithic contact
Sweethollow: no secondary calcium carbonate
Tonigut: deep to a lithic contact
GEOGRAPHIC SETTING:
Elevation--1,700 to 2,200 meters
Climate--warm summers, cold winters
Mean annual precipitation--400 mm to 600 mm
Mean annual air temperature--1.0 to 3.5 degrees C
Frost-free period--50 to 70 days
GEOGRAPHICALLY ASSOCIATED SOILS: None listed.
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class--well drained
Saturated hydraulic conductivity (Ksat)--high
USE AND VEGETATION:
Use--timber production, recreation, wildlife habitat
Native vegetation--Douglas-fir, western sweetroot, heartleaf arnica, Oregon grape, chokecherry
DISTRIBUTION AND EXTENT: Eastern Idaho Plateaus, Idaho; MLRA 13; limited extent
SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Bozeman, Montana
SERIES PROPOSED: Caribou County, Idaho, Caribou County Area, Idaho Soil Survey, 2017
REMARKS: Diagnostic horizons and other features in this pedon are --
Mollic epipedon (pachic)--12 to 53 cm (A1, A2 horizons);
Cambic horizon--53 to 115 cm (Bw horizon);
Calcic horizon--115 to greater than 150 cm (Bk horizon); and
Particle-size control section--37 to 112 cm (part of A2, part of Bw horizons).
Taxonomic version: Twelfth Edition, 2014.
National Cooperative Soil Survey
U.S.A.