LOCATION PANGUITCH UT

Established Series
REV: WRM/RLT/SJJ
03/2021

PANGUITCH SERIES

The Panguitch series consists of very deep, well drained, moderately permeable soils on fan terraces. They formed in mixed volcanic alluvium. Slopes range from 2 to 15 percent. The mean annual temperature is 43 degrees F. and the mean annual precipitation is 14 inches.

TAXONOMIC CLASS: Coarse-loamy, mixed, superactive, frigid Typic Argiustolls

TYPICAL PEDON: Panguitch gravelly loam--rangeland. (Colors are for air-dry soil unless otherwise stated.)

A1--0 to 2 inches; grayish brown (10YR 5/2) gravelly loam, dark brown (10YR 3/3) moist; weak thick platy structure parting to weak fine granular; soft, friable, nonsticky and nonplastic; few fine roots; many fine and medium vesicular pores; 25 percent pebbles; neutral (pH 7.0); abrupt smooth boundary. (2 to 5 inches thick)

A2--2 to 5 inches; brown (7.5YR 4/2) gravelly loam, dark brown (7.5YR 3/2) moist; weak medium subangular blocky structure parting to weak fine granular; soft, friable, slightly sticky and slightly plastic; few fine and medium roots; common fine interstitial pores; few thin clay films in pores; 20 percent pebbles; neutral (pH 7.0); clear smooth boundary. (2 to 5 inches thick)

Bw1--5 to 11 inches; brown (7.5YR 4/2) gravelly clay loam, dark brown (7.5YR 3/2) moist; weak fine and medium subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; few very fine and medium roots; common fine interstitial and few fine tubular pores; few thin clay films on faces of peds and in pores; 25 percent pebbles; slightly alkaline (pH 7.5); gradual wavy boundary. (3 to 8 inches thick)

Bw2--11 to 26 inches; brown (7.5YR 5/2) gravelly sandy loam, brown (7.5YR 4/2) moist; weak medium and coarse subangular blocky structure; soft, friable, nonsticky and nonplastic; few very fine and medium roots; few thin clay films in pores; 25 percent pebbles and 5 percent cobbles; slightly calcareous; moderately alkaline (pH 8.0); gradual wavy boundary. (5 to 16 inches thick)

Bk1--26 to 47 inches; pink (7.5YR 7/4) and pinkish white (7.5YR 8/2) gravelly sandy loam, light brown (7.5YR 6/4) and pinkish gray (7.5YR 7/2) moist; massive; slightly hard, firm, nonsticky and nonplastic; few very fine roots; few fine interstitial and tubular pores; 25 percent pebbles and 5 percent cobbles coated with carbonates on the bottom side; very strongly calcareous; moderately alkaline (pH 8.0); gradual wavy boundary. (4 to 24 inches thick)

Bk2--47 to 60 inches; light brown (7.5YR 6/3) and pinkish white (7.5YR 8/2) very gravelly loamy sand, brown (7.5YR 5/3) and pinkish gray (7.5YR 7/2) moist; massive; soft, friable, nonsticky and nonplastic; few fine and common coarse interstitial pores; 30 percent pebbles and 10 percent cobbles coated with carbonates on the bottom side; very strongly calcareous; moderately alkaline (pH 8.2).

TYPE LOCATION: Garfield County, Utah; Lime Kiln Canyon along west side of forest boundary, NW 1/4, NW 1/4 sec. 15, T. 34 S., R. 4 1/2 W.

RANGE IN CHARACTERISTICS: The mollic epipedon is 7 to 12 inches thick and is more than one-third the depth to the calcic horizon. Depth to the Bk horizon ranges from 18 to 30 inches. The particle-size control section averages 13 to 18 percent clay and 20 to 35 percent rock fragments. These soils have a mean annual soil temperature of about 44 to 47 degrees F. and a mean summer soil temperature of about 59 to 64 degrees F. They are noncalcareous in the A horizon and very strongly calcareous in the Bk horizon.

The A horizon has hue of 7.5YR or 10YR, value of 4 or 5 dry, 2 or 3 moist, and chroma of 2 or 3. Dry value of the A horizon is less than 4.5 after the upper 7 inches are mixed.

The Bw horizon has value of 4 to 6 dry, 3 to 5 moist and chroma of 2 to 4. It ranges from gravelly sandy loam to gravelly and cobbly clay loam.

The Bk horizon has hue of 7.5YR or 10YR, value of 6 to 8 dry, 5 to 7 moist and chroma of 2 to 4. It ranges from gravelly and very gravelly loamy sand to gravelly and very gravelly loam.

COMPETING SERIES: These are the Baxendale (T), Belain, Bitterroot, Hopley, Mott, Relan, Tally, Vebar and Victor series. Baxendale (T), Belain, Bitterroot, Mott, Vebar and Victor soils do not have Bk horizons. In addition, Baxendale (T) and Mott soils have less than 15 percent rock fragments in the particle-size control section; Belain, Bitterroot and Vebar soils are moderately deep; and the Victor soils are underlain by sand and gravel at 36 inches. Hopley and Tally soils have less than 20 percent rock fragments in the particle-size control section. Relan soils lack Bw horizons and are 8 to 18 inches deep to the Bk horizon.

GEOGRAPHIC SETTING: Panguitch soils formed in mixed volcanic alluvium. They are on gently to strongly sloping dissected fan terraces at elevations of 7,000 to 7,800 feet. Slopes are 2 to 15 percent. The average annual precipitation is 12 to 16 inches and the freeze-free period ranges from 80 to 90 days. The mean annual temperature is 42 to 45 degrees F. and the average summer temperature is 59 to 64 degrees F.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Circleville, Datino, Mitch and Widtsoe soils. Circleville soils have a Bt horizon and are 20 to 40 inches deep over bedrock. Mitch soils lack a cambic horizon and a Bk horizon. Datino and Widtsoe are loamy-skeletal.

DRAINAGE AND PERMEABILITY: Well drained; medium runoff; moderate permeability.

USE AND VEGETATION: Rangeland and wildlife. Native vegetation is pinyon pine, Utah juniper, big sagebrush, green rabbitbrush, blue grama, Indian ricegrass and needleandthread grass.

DISTRIBUTION AND EXTENT: These soils are in the south-central part of Utah. They are not extensive.

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Bozeman, Montana

SERIES ESTABLISHED: Garfield County (Paunsaugunt Soil Survey Area), Utah, 1969.

REMARKS: These soils are formerly classified as Brown soils. Diagnostic horizons and features recognized in this pedon are:

Mollic epipedon - the zone from the surface of the soil to a depth of 11 inches (A1, A2, Bw1 horizons)
Cambic horizon - the zone from 5 to 26 inches (Bw1, Bw2 horizons).

Should evaluate a possible re-classification to Aridic Argiustolls?

National Cooperative Soil Survey
U.S.A.