LOCATION MUDCREE UTEstablished Series
TAXONOMIC CLASS: Fine-loamy, mixed, superactive, frigid Typic Calciustolls
TYPICAL PEDON: Mudcree very cobbly sandy clay loam - rangeland. (Colors are for dry soil unless otherwise noted.)
The soil surface is covered with 2 percent stones, 15 percent cobbles, and 15 percent gravel.
A1--0 to 2 inches; brown (10YR 5/3) very cobbly sandy clay loam, very dark grayish brown (10YR 3/2) moist; weak moderately thick platy structure parting to strong very fine granular; soft, friable, slightly sticky and slightly plastic; few coarse, medium, fine and very fine roots; common fine and many very fine interstitial pores; 10 percent stones, 10 percent cobbles and 10 percent gravel; slightly effervescent; slightly alkaline (pH 7.6); abrupt smooth boundary. (2 to 5 inches thick)
A2--2 to 5 inches; brown (10YR 5/3) gravelly clay loam, very dark grayish brown (10YR 3/2) moist; weak thick platy structure parting to moderate fine and very fine subangular blocky; slightly hard, firm, sticky and plastic; few coarse, medium and common fine and very fine roots; few medium and common fine tubular pores; 5 percent stones, 5 percent cobbles and 15 percent gravel; slightly alkaline (pH 7.6); abrupt wavy boundary. (3 to 6 inches thick)
A3--5 to 10 inches; brown (10YR 5/3) gravelly clay loam, dark brown (10YR 3/3) moist; weak medium subangular blocky structure parting to strong fine subangular blocky; hard, firm, sticky and plastic; few coarse, medium and common fine and very fine roots; few medium, common fine and many very fine tubular pores; 10 percent cobbles and 20 percent gravel; slightly effervescent, carbonates occur as thin coatings on the undersides of rock fragments; slightly alkaline (pH 7.8); abrupt wavy boundary. (4 to 7 inches thick)
Bk1--10 to 21 inches; light yellowish brown (2.5Y 6/4) gravelly clay loam, olive brown (2.5Y 4/4) moist; moderate medium subangular blocky structure parting to strong fine subangular blocky; very hard, firm, sticky and plastic; few coarse, medium, fine and very fine roots; few medium, common fine and very fine tubular pores; 10 percent cobbles and 15 percent gravel; strongly effervescent, carbonates are disseminated and occur in common thin veins and as coatings on gravel; moderately alkaline (pH 8.2); clear irregular boundary. (9 to 16 inches thick)
Bk2--21 to 32 inches; pale yellow (2.5Y 7/4) gravelly clay loam, light olive brown (2.5Y 5/4) moist; moderate medium, fine and very fine subangular blocky structure; very hard, firm, sticky and plastic; few fine and very fine roots; few medium, common fine and very fine tubular pores; 5 percent cobbles and 10 percent gravel; strongly effervescent, carbonates are disseminated and occur in common thin veins and as coatings on gravel; moderately alkaline (pH 8.4); abrupt wavy boundary. (8 to 15 inches thick)
2Ck--32 to 35 inches; very pale brown (10YR 7/4) sandy loam, yellowish brown (10YR 5/4) moist; massive; slightly hard, very friable, slightly sticky and nonplastic; few fine and very fine roots; few medium, common fine and very fine tubular pores; 5 percent cobbles and 5 percent gravel; strongly effervescent, carbonates are disseminated and occur in common thin veins; moderately alkaline (pH 8.4); abrupt wavy boundary. (0 to 4 inches thick)
2Cr--35 inches; weathered siltstone.
TYPE LOCATION: Kane County, Utah; about 5 miles northeast of Cogswell Point; about 600 feet south and 720 feet east of the northwest corner of section 13, T. 39 S., R. 9 W; Straight Canyon Quadrangle; lat. 37 degrees 25 minutes 33 seconds N. and long. 112 degrees 48 minutes 28 seconds W.
RANGE IN CHARACTERISTICS: Mean annual soil temperature ranges from 41 to 46 degrees F., and mean summer soil temperature ranges from 59 to 62 degrees F. The soil moisture regime is typic ustic.
The mollic epipedon is 7 to 12 inches thick. Depth to the calcic horizon is 7 to 15 inches. The particle-size control section has 27 to 35 percent clay and rock fragments range from 15 to 35 percent. Depth to the paralithic contact ranges from 20 to 40 inches.
The A horizon has value of 3 through 5 dry, 2 or 3 moist, and chroma of 2 or 3. Texture is very cobbly sandy clay loam or gravelly clay loam. This soil is calcareous to surface after mixing the top 7 inches of this soil.
The Bw horizon has a hue of 10YR or 2.5Y and a value of 4 or 5 dry. Texture is gravelly clay loam or cobbly clay loam. Reaction is slightly to moderately alkaline.
The Bk horizon has a hue of 10YR or 2.5Y, value of 6 or 7 dry, 4 or 5 moist, and chroma of 3 or 4. Texture is gravelly clay loam or cobbly clay loam. Reaction is slightly to moderately alkaline.
The 2C horizon has a hue of 10YR or 2.5Y, value of 6 or 7 dry, 4 or 5 moist, and chroma of 3 or 4. Texture is a sandy loam. The horizon is 0 to 10 percent cobbles and 0 to 10 percent gravel. Reaction is moderately alkaline. This horizon may be absent in some pedons.
COMPETING SERIES: These are the Beanlake (MT), Ipano (MT), Kiev (MT), Rabbitex (CO) and Roundor (MT), and Zahl (ND) series. Beanlake, Kiev, and Zahl soils are very deep. Ipano soils have a particle size control section with less than 27 percent clay. Kiev soils have less than 15 percent rock fragments in the particle size control section and lack bedrock within a depth of 70 inches. Rabbitex soils are deep to bedrock. Roundor soils have 0 to 15 percent rock fragments in the particle-size control section.
GEOGRAPHIC SETTING: Mudcree soils are on mountainsides. Slopes range from 40 to 60 percent. The soil formed in colluvium and residuum dominantly from shale, siltstone and sandstone. Elevation ranges from 6,300 to 7,400 feet. The mean annual precipitation ranges from 16 to 22 inches. Mean annual air temperature ranges from 39 to 44 degrees F. The frost-free period is 80 to 100 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Detra and Syrett soils. Detra soils have an argillic horizon and Syrett soils lack a calcic horizon
DRAINAGE AND PERMEABILITY: Well drained; high to very high runoff; moderately slow permeability.
USE AND VEGETATION: These soils are used for grazing and wildlife habitat. Important plants are Gambel oak, Utah serviceberry, bluebunch wheatgrass, muttongrass and slender wheatgrass.
DISTRIBUTION AND EXTENT: Kane County, Utah; Southwestern Utah; MLRA 47. This series is of small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Bozeman, Montana
SERIES ESTABLISHED: Iron-Washington Area Soil Survey; Kane County, Utah, 1997.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Mollic epipedon - the zone from 0 to 10 inches.
Calcic horizon - the zone from 10 to 32 inches
Paralithic contact - the contact at 35 inches.
Keys to Soil Taxonomy: Series classified according to Eighth Edition, 1998.
ADDITIONAL DATA: