LOCATION WALTERSHOW UTEstablished Series
TAXONOMIC CLASS: Clayey-skeletal, smectitic, frigid Calcidic Argiustolls
TYPICAL PEDON: Waltershow extremely cobbly loam--woodland. (Colors are for air-dry soil unless otherwise stated.)
A--0 to 3 inches; brown (7.5YR 4/2) extremely cobbly loam, dark brown (7.5YR 3/2) moist; weak fine granular structure; slightly hard, friable, slightly sticky and slightly plastic; few fine, medium and coarse roots; common very fine pores; 30 percent gravel, 25 percent cobbles and 10 percent stones; slightly alkaline (pH 7.4); clear smooth boundary. (2 to 4 inches thick)
Bt1--3 to 10 inches; brown (7.5YR 5/2) very cobbly clay, dark brown (7.5YR 3/2) moist; moderate medium subangular blocky structure; very hard, firm, sticky and plastic; common fine, medium and coarse roots; few fine and medium pores common distinct films on faces of peds; 25 percent pebbles and 30 percent cobbles; slightly alkaline (pH 7.5) clear wavy boundary. (7 to 10 inches thick)
Bt2--10 to 20 inches; light brownish gray (10YR 6/2) very cobbly clay loam, brown (10YR 4/3) moist; moderate medium subangular blocky structure; very hard, firm, sticky and plastic; common fine, medium and coarse roots; common very fine pores; common faint clay films on faces of peds; 25 percent gravel, 25 percent cobbles and 5 percent stones; slightly alkaline (pH 7.4); gradual wavy boundary. (0 to 10 inches thick)
Bk1--20 to 31 inches; light gray (10YR 7/2) extremely gravelly sandy loam, dark grayish brown (10YR 4/2) moist; massive; hard, very friable; few fine medium and coarse roots; common interstitial pores; 50 percent gravel, 15 percent cobbles and 5 percent stones; strongly effervescent; carbonates are in veins; strongly alkaline (pH 8.6); gradual wavy boundary. (9 to 16 inches thick)
Bk2--31 to 39 inches; white (10YR 8/2) extremely gravelly sandy loam, grayish brown (10YR 5/2) moist; massive; moderately to strongly cemented; few fine roots; few fine pores; 50 percent gravel, 15 percent cobbles and 5 percent stones; strongly effervescent; carbonates are in soft masses; strongly alkaline (pH 8.6); gradual wavy boundary. (4 to 15 inches thick)
C--39 to 60 inches, light brownish gray (10YR 6/2) extremely gravelly sand, dark grayish brown (10YR 4/2) moist; single grain; loose; common interstitial pores; 60 percent gravel, 15 percent cobbles and 5 percent stones; strongly effervescent; carbonates are disseminated; moderately alkaline (pH 8.4)
TYPE LOCATION: Garfield County Utah; 3 miles north of Bear Valley Junction; SW 1/4 of sec. 22, T. 32 S., R. 5 W.
RANGE IN CHARACTERISTICS: The thickness of the solum is 30 to 50 inches. The mollic epipedon is 10 to 14 inches thick and includes the upper part of argillic horizon. The soils are dry in parts of the moisture control section for 75 to 90 days during the winter months, and are dry in all parts of the moisture control section 40 to 50 percent of the time when the soil temperature at 20 inches depth is more than 41 degrees F. The soil moisture regime is ustic bordering on aridic.
The A horizon has hue of 7.5YR or 10YR, value of 4 or 5 dry, 3 or 4 moist, chroma 2 or 3.
The Bt horizon has hue of 7.5YR or 10YR, value of 4 to 6 dry and 3 or 4 moist, and chroma of 2 or 3; the dark colors are in the upper part. It is very cobbly clay or very cobbly clay loam. The Bt horizon has 35 to 45 percent clay and contains 35 to 60 percent rock fragments. The rock fragments are dominantly larger than 3 inches.
The Bk horizon has value of 6 to 8 dry and 4 or 5 moist, and chroma of 2 or 3. It is very gravelly sandy loam, very gravelly loam or extremely gravelly sandy loam. The Bk horizon has 5 to 18 percent clay and contains 25 to 70 percent rock fragments. It is moderately alkaline to strongly alkaline.
The C horizon has hue of 7.5YR or 10YR and chroma of 2 to 4. It is extremely gravelly sand or extremely gravelly sandy loam. The C horizon has 2 to 20 percent clay and contains 60 to 80 percent rock fragments.
COMPETING SERIES: There are no competing series.
GEOGRAPHIC SETTING: Waltershow soils are on mountain slopes and rolling uplands. Slopes range from 4 to 60 percent. The Waltershow soils formed in alluvium and colluvium from basic and intermediate igneous rocks. The mean annual temperature is 40 to 45 degrees F. The average annual precipitation is 12 to 14 inches ana is distributed fairly even throughout the year with 55 to 65 percent falling between April and September with December and January being the driest. Elevation is 6,800 to 7,500 feet. The freeze-free period is about 70 to 100 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Comodore, Dalcan, Notter Showalter and Venture soils. Comodore soils are 10 to 20 inches deep over bedrock. Dalcan soils are 20 to 40 inches deep over bedrock. Notter soils have 18 to 30 percent clay in the particle-size control section. Venture soils are 13 to 20 inches deep over a petrocalcic horizon.
DRAINAGE AND PERMEABILITY: Well drained; medium to rapid runoff; slow permeability.
USE AND VEGETATION: Pinyon, Utah juniper, mountain big sagebrush and blue grama. Waltershow soils are used for rangeland, woodland and wildlife habitat.
DISTRIBUTION AND EXTENT: Waltershow soils are of moderate extent. MLRA 47.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Bozeman, Montana
SERIES ESTABLISHED: Garfield County (Panguitch Soil Survey Area), Utah, 1984.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Mollic epipedon - the zone from the surface to 10 inches (A & Btl horizons)
Argillic horizon - the zone of clay accumulation from 3 to 20 inches.
Calcic horizon - the zone of calcium carbonate accumulation from 20 to 39 inches.