LOCATION POLELINE UT
Established Series
REV: MEO/TAD/RLT
05/2012
POLELINE SERIES
The Poleline series consists of deep, well drained, moderately permeable soils that formed in colluvium from sandstone. Poleline soils occur on mountainsides. Slopes are 15 to 70 percent. The average annual precipitation is about 30 inches and mean annual temperature is about 39 degrees F.
TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive Pachic Haplocryolls
TYPICAL PEDON: Poleline gravelly loam, woodland. (Colors are for dry soil unless otherwise noted.)
A1--0 to 8 inches; very dark grayish brown (10YR 3/2) gravelly loam, very dark brown (10YR 2/2) moist; moderate medium and fine granular structure; soft, very friable, slightly sticky; many fine roots; 30 percent gravel; slightly acid (pH 6.5); clear wavy boundary. (4 to 9 inches thick)
A2--8 to 20 inches; brown (10YR 4/3) gravelly loam, very dark grayish brown (10YR 3/2) moist; weak medium and coarse granular structure; slightly hard, friable, slightly sticky and slightly plastic; many fine and very fine, common medium and few large roots; 30 percent gravel; slightly acid (pH 6.2); clear wavy boundary. (7 to 12 inches thick)
A3--20 to 32 inches; dark grayish brown (10YR 4/2) very gravelly loam, dark brown (10YR 3/3) moist; weak medium granular structure; slightly hard, very friable, slightly sticky and slightly plastic; common fine and very fine roots; 50 percent gravel; slightly acid (pH 6.1); clear wavy boundary. (10 to 12 inches thick)
Bw--32 to 44 inches; light brown (7.5YR 6/3) very gravelly sandy loam, brown (7.5YR 4/3) moist; very weak subangular blocky structure; slightly hard, very friable; few fine and common medium roots; 50 percent gravel; slightly acid (pH 6.1); abrupt irregular boundary. (12 to 18 inches thick)
R--44 inches; sandstone.
TYPE LOCATION: Wasatch County, Utah; near junction of road to Mill Canyon Peak and Mill Canyon Spring; NE 1/4, SE 1/4, NE 1/4 of sec. 15, T. 4 S., R. 3 E.
RANGE IN CHARACTERISTICS: The mollic epipedon ranges from 16 to 35 inches thick. The combined thickness of the A and B horizons ranges from 40 to more than 60 inches over bedrock. Rock fragments are cobble and gravel size, angular or rounded sandstone, and quartzite rock fragments, and range from 35 to 75 percent in the solum. The particle-size control section averages 12 to 18 percent clay. The mean annual soil temperature ranges from 36 to 42 degrees F. and the mean summer soil temperature at a depth of 20 inches ranges from 52 to 58 degrees F. The soil is usually moist, but is dry in parts of the A horizon for 40 to 60 days during the late summer and early fall months.
The A horizon has hue of 10YR or 7.5YR, value of 3 to 5 dry, 2 or 3 moist, and chroma of 1 to 3. Reaction is slightly acid to neutral.
The B horizon has hue of 10YR or 7.5YR, value of 4 to 7 dry, 3 to 5 moist, and chromas of 2 or 3. It ranges from very gravelly sandy loam to very cobbly very fine sandy loam. Reaction ranges from slightly acid to medium acid.
COMPETING SERIES: These are the
Behanin,
Belsac (T),
Caballo,
Campone,
Croesus,
Darland,
Dateman,
Gateview,
Hapgood,
Harcany,
Hobacker,
Lolon, Lorta (T),
Marcetta,
Nagitsy,
Namela,
Nazaton,
Nevtah,
Povey,
Prong,
Raynoldson (T), Snopac (T) and
Spearhead series. Gateview, Harcany, Lolon,
Snag, Povey, and Spearhead soils lack cambic horizons. Behanin, Caballo, Campone, and Hapgood soils have more than 18 percent clay in the 10 to 40 inch particle size control section. Belsac (T) soils have paralithic contact between 20 and 40 inches. Marcetta soils have albic horizons. Snopac (T) lacks a cambic horizon. Lorta (T) has more than 60 percent rock fragments in the particle size control section. Croesus, Dateman, Nagitsy, Namela, Nevtah and Prong soils have bedrock at depths of 20 to 40 inches. Darland and Raynoldson (T) soils have C horizons within 60 inches. Hobacker soils lack a cambic horizon and have visible carbonates in the series control section. Nazaton soils have 0 horizons and are more than 60 inches to bedrock. Povey soils have A and B horizons less than 40 inches thick.
GEOGRAPHIC SETTING: Poleline soils are on steep to very steep mountainsides adjacent to or at the head of drainageways. Elevations range from about 6,500 to 9,000 feet. Slopes range from 15 to 70 percent, but are most commonly about 25 to 60 percent with north and east aspects. The climate is humid; the average annual precipitation is about 25 to 35 inches, mostly in the form of snow from October to April. The mean annual temperature is 36 to 42 degrees F., mean summer temperature is about 58 degrees F. The freeze-free period is about 50 to 80 days.
GEOGRAPHICALLY ASSOCIATED SOILS: This is the
Agassiz soils. Agassiz soils are less than 20 inches deep over limestone.
DRAINAGE AND PERMEABILITY: Well drained; slow to medium runoff; moderate to rapid permeability.
USE AND VEGETATION: These soils are used primarily as watershed. The potential vegetation is aspen with widely spaced Douglas-fir, white fir, willows, snowberry, chokecherry and mountainash.
DISTRIBUTION AND EXTENT: North and central Utah. This series is not extensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Bozeman, Montana
SERIES ESTABLISHED: Heber Valley Area, Utah, 1972.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Mollic epipedon -the zone from the surface of the soil to 32 inches. (A1, A2, A3 horizons)
Cambic horizon - (Bw horizon)
Pachic feature - the mollic epipedon is more than 17 inches thick.
Cryic feature -a mean annual soil temperature of 36 to 42 degrees F.
National Cooperative Soil Survey
U.S.A.