LOCATION CUNDICK WY
Tentative Series
Rev. JGM-RJS
10/2013
CUNDICK SERIES
The Cundick series consists of moderately deep, well drained soils that formed in slope alluvium or colluvium derived from limestone. These soils occur on mesas, ridges and buttes. Slopes are 1 to 20 percent. Mean annual precipitation is about 430 mm and mean annual air temperature is about 3.0 degrees C.
TAXONOMIC CLASS: Fine-loamy, mixed, superactive Ustic Haplocryalfs
TYPICAL PEDON: Cundick gravelly loam, in rangeland (colors are for dry soil unless otherwise stated).
A--0 to 15 cm; pale brown (10YR 6/3) gravelly loam, brown (10YR 4/3) moist; weak fine subangular blocky structure; soft, very friable, slightly sticky and slightly plastic; many very fine, common fine, and few medium roots; few fine and common very fine irregular pores; 15 percent subangular limestone gravel; finely disseminated calcium carbonate; strongly effervescent; moderately alkaline (pH 8.2); clear smooth boundary. (10 to 20 cm thick)
Btk--15 to 42 cm; brown (10YR 5/3) gravelly loam, brown (10YR 4/3) moist; weak medium prismatic structure parting to moderate medium subangular blocky; slightly hard, friable, slightly sticky and slightly plastic; common very fine and few fine roots; common very fine and few fine dendritic tubular pores; 20 percent faint clay films on vertical faces of peds; 20 percent subangular limestone gravel; 1 percent fine faint irregular carbonate masses in the matrix, and finely disseminated calcium carbonate; violently effervescent; strongly alkaline (pH 8.5); clear smooth boundary. (20 to 40 cm thick)
Bk--42 to 68 cm; pale brown (10YR 6/3) gravelly loam, brown (10YR 4/3) moist; weak medium subangular blocky structure; slightly hard, friable, moderately sticky and slightly plastic; common very fine and few fine roots; few very fine and fine dendritic tubular pores; 25 percent subangular limestone gravel and 5 percent limestone flagstones; 3 percent fine faint irregular carbonate masses in the matrix, and finely disseminated calcium carbonate; violently effervescent; strongly alkaline (pH 8.5); gradual smooth boundary. (15 to 45 cm thick)
BCk--68 to 84 cm; very pale brown (10YR 7/3) very gravelly loam, brown (10YR 5/3) moist; weak coarse subangular blocky structure; slightly hard, friable, moderately sticky and slightly plastic; few very fine roots; few very fine dendritic tubular pores; 25 percent subangular limestone gravel and 10 percent subangular limestone flagstones; 2 percent fine faint irregular carbonate masses in the matrix, and finely disseminated calcium carbonate; violently effervescent; strongly alkaline (pH 8.6); abrupt smooth boundary. (0 to 25 cm thick)
R--84 cm; strongly cemented limestone bedrock
TYPE LOCATION: Lincoln County, Wyoming; 41 degrees 52 minutes 42.80 seconds north latitude and 110 degrees 46 minutes 24.80 seconds west longitude; NAD83, UTM 518789e, 4636315n, zone 12.
RANGE IN CHARACTERISTICS:
Mean annual soil temperature - 2.0 to 4.5 degrees C.
Depth to an argillic horizon - 10 to 20 cm
Thickness of argillic horizon - 20 to 40 cm
Depth to secondary calcium carbonate accumulation - 10 to 20 cm
Depth to a calcic horizon - 30 to 60 cm
Depth to a lithic contact - 50 to 100 cm
A horizon
Hue: 7.5YR or 10YR; dry or moist
Value: 4 to 6 dry; 3 or 4 moist
Chroma: 2 or 3; dry or moist
Clay content: 16 to 20 percent
Rock fragments: 15 to 30 percent gravel
Calcium carbonate equivalent: 3 to 10 percent
Reaction: pH 7.9 to 8.4
Btk horizon
Hue: 7.5YR or 10YR; dry or moist
Value: 4 to 6 dry; 3 to 5 moist
Chroma: 3 or 4; dry or moist
Texture: loam, clay loam
Clay content: 20 to 35 percent
Rock fragments: 15 to 35 percent gravel
Calcium carbonate equivalent: 5 to 15 percent
Sodium adsorption ration: 0 to 8 percent
Reaction: pH 8.0 to 8.8
Bk, BCk horizons
Hue: 7.5YR or 10YR; dry or moist
Value: 5 to 7 dry; 4 to 6 moist
Chroma: 2 or 3; dry or moist
Clay content: 18 to 27 percent
Rock fragments: 20 to 40 percent--20 to 35 percent gravel, 0 to 15 percent limestone flagstones
Calcium carbonate equivalent: 15 to 25 percent
Sodium adsorption ration: 0 to 8 percent
Reaction: pH 8.0 to 8.8
COMPETING SERIES:
Ansel (WY) - are very deep
Calpet (WY) - are very deep
Howlett (CO) - are very deep
Weminuche (CO) - are very deep
Wix (CO) - does not have secondary calcium carbonate accumulation
GEOGRAPHIC SETTING:
Landform - mesas, ridges and buttes
Elevation - 2,280 to 2,450 meters
Slope - 1 to 20 percent
Parent material - slope alluvium or colluvium derived from limestone
Climate - long, cold winters; short, cool summers; peak precipitation occurs from March to June
Mean annual precipitation - 380 to 480 mm
Mean annual air temperature - 2.5 to 5.0 degrees C
Frost-free period - 30 to 60 days
GEOGRAPHICALLY ASSOCIATED SOILS: None listed.
DRAINAGE AND PERMEABILITY: Well drained; moderate permeability.
USE AND VEGETATION: Cundick soils are primarily used for rangeland and wildlife habitat. The potential native vegetation may include mountain big sagebrush, snowberry, antelope bitterbrush, and bluebunch wheatgrass.
DISTRIBUTION AND EXTENT: Cundick soils are of small extent in southwestern Wyoming. MLRA - 46.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Bozeman, Montana
SERIES PROPOSED: Lincoln County, Wyoming in 1974.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - 0 to 15 cm (A horizon)
Argillic horizon - 15 to 42 cm (Btk horizon)
Secondary calcium carbonate accumulation - 15 to 84 cm (Btk, Bk, BCk horizons)
Calcic horizon - 42 to 84 cm (Bk, BCk horizons)
Lithic contact - 84 cm (R horizon)
Particle size control section - 15 to 42 cm (Btk horizon)
Cundick soils have a cryic temperature regime and an ustic moisture regime.
National Cooperative Soil Survey
U.S.A.