LOCATION BEHANIN UT+COEstablished Series
TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive Pachic Haplocryolls
TYPICAL PEDON: Behanin loam--timber (Colors are for air-dry soil unless otherwise stated.)
01--1/2 inch to 0; partially to well decomposed needles, twigs, etc.
A--0 to 2 inches; dark grayish brown (10YR 4/2) loam, very dark grayish brown (10YR 3/2) moist; weak very thin platy structure that parts to weak, moderate fine granular; slightly hard, very friable; few medium and common fine roots; few very fine pores; 5 percent subangular gravel; medium acid (pH 6.0); clear smooth boundary. (2 to 6 inches thick)
A2--2 to 8 inches; grayish brown (10YR 5/2) loam, very dark grayish brown (10YR 3/2) moist; weak medium subangular blocky structure that parts to weak, moderate fine and very fine granular; slightly hard, very friable; few coarse, common medium, many fine and very fine roots; few very fine pores; 5 percent subangular gravel; medium acid (pH 6.0); clear wavy boundary. (3 to 6 inches thick)
A3--8 to 17 inches; grayish brown (10YR 5/2) loam, very dark brown (10YR 3/3) moist; weak medium subangular blocky structure that parts to weak very fine granular; slightly hard, friable, slightly sticky and slightly plastic; few coarse and medium, common fine and very fine roots; common very fine pores; 10 percent subangular gravel; medium acid (pH 6.0); abrupt wavy boundary. (8 to 16 inches thick)
Bw1--17 to 29 inches; dark brown (10YR 4/3) moist; very cobbly loam, moderate medium subangular blocky structure that parts to moderate fine subangular blocky; slightly hard, friable, slightly sticky and slightly plastic; common medium and coarse, few fine and very fine roots; very few thin clay films on faces of peds; few very fine pores; 40 percent subangular cobbles; medium acid (pH 6.0); gradual wavy boundary. (10 to 14 inches thick)
Bw2--29 to 44 inches; dark brown (10YR 4/3) dry and moist; very cobbly loam, moderate fine subangular blocky structure that parts to moderate fine granular; soft, very friable, slightly sticky and slightly plastic; common coarse and medium, few fine and very fine roots; few fine pores; very few thin clay films on faces of peds; 50 percent subangular cobbles; medium acid (pH 6.0); gradual wavy boundary. (14 to 18 inches thick)
C--44 to 60 inches; dark brown (10YR 4/3) dry and moist; very cobbly sandy loam; massive; soft, very friable, slightly sticky and slightly plastic; few medium roots; 50 percent subangular cobbles, 10 percent stones; medium acid (pH 6.0)
TYPE LOCATION: Garfield County, Utah; Cottonwood pass road, SW 1/4 sec. 14, T. 32 S., R 4 W.
RANGE IN CHARACTERISTICS: The mollic epipedon is 16 to 24 inches thick. Rock fragments between depths of 10 to 40 inches average 35 to 60 percent. Mean annual soil temperature is about 34 to 40 degrees F. and the mean summer soil temperature at a depth of 20 inches is about 48 to 54 degrees F. The soils are slightly acid, medium acid, or neutral in the solum. The particle size control section averages gravelly and cobbly loam to very gravelly and very cobbly loam with about 18 to 25 percent clay.
The A horizon has value of 3 to 5 dry, 2 or 3 moist, and chroma of 2 or 3.
The Bw (cambic) horizon has value of 4 to 6 dry and chroma of 2 or 3. It is gravelly loam, very gravelly loam, cobbly loam, or very cobbly loam.
The C horizon has value of 4 to 6 dry, 3 or 4 moist, and chroma of 2 or 3. It is very gravelly and very cobbly sandy loam to very gravelly and very cobbly loam.
COMPETING SERIES: These are the Belsac (NV), Blanca (NM), Busterback T(ID), Caballo (NM), Campone (CA), Croesus (NV), Darland (WA), Dateman (UT), Gateview (CO), Hapgood (NV), Harcany (NV), Hobacker (WY), Lionhead (ID), Lolon (MT), Marcetta (MT), Nagitsy (ID), Namela (CO), Nazaton (ID), Nevtah (NV), Papaspila T(CO), Poleline (UT), Povey (ID), Prong (OR), Snag (CA), Snopoc (NV), Spearhead (WY) and Splitbutte (ID) series. Blanca, Campone, Gateview, Hapgood, Harcany, Hobacker, Nevtah, Snag, and Spearhead soils lack cambic horizons. Croesus, Dateman, Nagitsy, and Prong soils have bedrock at depths of 20 to 40 inches. Darland soils have less than 18 percent clay in the textural control section and have a mean annual soil temperature warmer than 43 degrees F. Caballo soils are calcareous below 28 inches. Lolon soils have loose sand, gravel and cobbles at depths of 20 to 40 inches. Nevtah soils have a paralithic contact at depths of 20 to 40 inches. Marcetta soils have chroma of 1 in the A horizon and do not have cambic horizons. Poleline soils have a mollic epipedon of 30 to 35 inches thick. Nazaton soils have a mean annual soil temperature above 42 degrees F. Belsac, Namela and Splitbutte soils are moderately deep to bedrock. Busterback soils have a lithologocal discontinuity of extremely gravelly sand at 30 inches. Lionhead soils have a calcic horizon. Lolon soils have a lithologocal discontinuity of loose sand at 28 inches. Papaspila soils do not have cambic horizons. Povey and Snopoc soils have less than 18 percent clay in the particle size control section.
GEOGRAPHIC SETTING: Behanin soils are on the steep to very steep north-facing colluvial slopes on hills, mountains, and ridges at elevations of 7,500 to 10,800 feet. Slopes gradients range from 25 to 70 percent. These soils formed in colluvium and residuum from intermediate volcanic and sedimentary rocks. The average annual precipitation is 18 to 30 inches and the freeze-free period ranges from 45 to 70 days. The mean annual temperature is 34 to 40 degrees F. and the average summer temperature is 48 to 54 degrees F.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Callings, Castino, and Echard soils. Callings soils have a mollic epipedon 10 to 15 inches thick and an argillic horizon with over 35 percent clay. Castino soils have a mollic epipedon 7 to 15 inches thick and an argillic horizon with more than 35 percent clay, and have bedrock at depths of 20 to 40 inches. Echard soils have an argillic horizon with over 35 percent clay.
DRAINAGE AND PERMEABILITY: Well drained; medium to rapid runoff; moderate permeabilty.
USE AND VEGETATION: Timber. Native vegetation is Englemann spruce, Douglas-fir, white fir, wild strawberry, peavine, brome grass, and horsetail.
DISTRIBUTION AND EXTENT: South-central Utah. This series is moderately extensive. MLRA 47.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Bozeman, Montana
SERIES ESTABLISHED: Garfield County (Paunsaugunt Area), Utah, 1969.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Pachic epipedon - the zone from the surface of the soil to 17 inches. (A1, A2, A3 horizon)
Cambic horizon - the zone from 17 to 44 inches. (Bw1 and Bw2 horizon)