LOCATION ANDYS UTEstablished Series
TAXONOMIC CLASS: Coarse-loamy, mixed, superactive, frigid Aridic Calciustolls
TYPICAL PEDON: Andys loam--rangeland. (Colors are for air-dry soil unless otherwise stated.)
A--0 to 8 inches; brown (l0YR 5/3) loam, dark brown (10YR 3/3) moist; weak fine granular structure; slightly hard, friable, slightly sticky and slightly plastic; common fine, medium and few coarse roots; commmon very fine pores; 5 percent cobbles; moderately calcareous; moderately alkaline (pH 8.4); clear smooth boundary. (7 to 8 inches thick).
Bk1--8 to 30 inches; white (10YR 8/2) loam, pale brown (10YR 6/3) moist; massive, friable, slightly sticky and slightly plastic; few fine roots; few fine and medium pores; 10 percent pebbles; strongly calcareous; slight to strong cementation; lime is in veins and filaments; strongly alkaline (pH 8.6); gradual wavy boundary. (4 to 29 inches thick).
Bk2--30 to 47 inches; white (10YR 8/2) gravelly loam, pale brown (10YR 6/3) moist; massive; very hard, friable, slightly sticky and slightly plastic; few fine roots; few fine pores; 10 percent pebbles, 5 percent cobbles; strongly calcareous; lime is in veins and filaments; moderately alkaline (pH 8.2); gradual wavy boundary. (11 to 17 inches thick).
C--47 to 60 inches; light gray (10YR 7/2) gravelly sandy loam, grayish brown (10YR 5/2) moist; single grain; slightly plastic; interstitial pores; 20 percent pebbles and 10 percent cobbles; strongly calcareous; moderately alkaline (pH 8.4).
TYPE LOCATION: Garfield County, Utah; about 3 miles southwest of Panguitch, in the southwest l/4 of sec. 36, T. 34 S., R. 5 W.
RANGE IN CHARACTERISTICS: The mean soil temperature is 42 to 47 degrees F., and the mean summer temperature is 60 to 63 degrees F. 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 a 20 inch depth is more than 41 degrees F. The mollic epipedon is 7 to 8 inches thick. Thickness of the solum is 35 to 50 inches thick. Rock fragment content in the control section ranges from 5 to 30 percent. Depth to the calcic horizon ranges from 7 to 10 inches. Depth of the calcic horizon ranges from 24 to 40 inches.
The A horizon has chroma of 2 or 3. Rock fragment content is 5 to 45 percent. It is slightly calcareous or moderately calcareous.
The Bk horizon has hue of 7.5YR or 10YR, value of 7 or 8 dry and 5 or 6 moist, and chroma of 2 to 4. Texture is loam, gravelly loam and gravelly sandy loam. Clay content is 8 to 18 percent. Rock fragment content is 5 to 30 percent. Reaction is moderately alkaline or strongly alkaline.
The C horizon has value of 7 dry and 4 or 5 moist, and chromas of 2 or 3. It is commonly gravelly sandy loam and loam, and less commonly gravelly sand. The C horizon is moderately calcareous or strongly calcareous. Reaction is moderately alkaline to strongly alkaline.
COMPETING SERIES: This is the Keedlar series in the same family and the Luhon and Bruman (T) series in similar families. The Keeldar soils have a calcic horizon deeper than 10 inches below the surface. Also, the calcic horizon is thicker than 40 inches. Luhon soils are in the fine-loamy family and do not have a mollic epipedon. Bruman (T) soils are in the loamy-skeletal family.
GEOGRAPHIC SETTING: Andys soils are on fan terraces, mountainsides and plateaus. Slopes are 2 to 25 percent. The soils formed in alluvium mainly from basic and intermediate igneous rocks but to a lesser extent from sedimentary rocks. The mean annual temperature is 40 to 45 degrees. F. Average annual precipitation is 9 to 14 inches and is distributed fairly evenly throughout the year with about 55 percent falling between April and September. July, August and September are the wettest months, with December and January being the driest. Elevation is 6,500 to 7,500 feet. The freeze-free period is 70 to 100 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the competing Luhon and Bruman series, and the Notter, Tridell and Zinzer series. Notter and Zinzer soils are on similar landscapes but are in the fine-loamy family. Tridell soils are on higher parts of the fans and are in the loamy-skeletal family.
DRAINAGE AND PERMEABILITY: Well drained. Runoff is slow to medium. Permeability is moderately rapid.
USE AND VEGETATION: The Andys soils are used for rangeland and wildlife habitat. Potential vegetation is black sagebrush, Indian ricegrass, blue grama, needleandthread, winterfat, antelope bitterbrush, and bottlebrush squirreltail.
DISTRIBUTION AND EXTENT: Andys soils are of limited extent. They are mapped in the Panguitch, Johns Valley and Antimony area of Garfield County.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Bozeman, Montana
SERIES ESTABLISHED: Panguitch Soil Survey Area, parts of Garfield, Iron, Kane and Piute Counties, Utah l984.
REMARKS: This series was previously named Antimony. Diagnostic horizons and features recognized in this pedon are:
Mollic epipedon - the zone from the surface of the soil to 8 inches (A horizon.)
Calcic horizon - the zone from 8 to 47 inches (Bk1, Bk2 horizons.)