LOCATION DATINO UTEstablished Series
TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive, frigid Entic Haplustolls
TYPICAL PEDON: Datino extremely stony fine sandy loam, on a northeast facing, convex, 70 percent slope in Douglas-fir at an elevation of 2,195 meters. (Colors are for dry soil unless otherwise noted.) The surface is covered by about 33 percent stones and boulders.
A--0 to 25 cm; brown (10YR 4/3) extremely stony fine sandy loam, dark brown (10YR 3/3) moist; weak fine granular structure; soft, friable, slightly sticky and slightly plastic; few coarse and medium and common fine and very fine roots; few very fine pores; 25 percent stones, 25 percent cobbles and 15 percent gravel; noneffervescent; moderately alkaline (pH 7.9); clear smooth boundary. (18 to 30 cm thick)
Bw--25 to 41 cm; brown (10YR 5/3) very stony loam, brown (10YR 4/3) moist; moderate medium subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; few coarse, medium, fine and very fine roots; few medium and common fine and very fine pores; 10 percent stones, 15 percent cobbles and 15 percent gravel; very slightly effervescent (2 percent calcium carbonate equivalent); moderately alkaline (pH 7.9); gradual wavy boundary. (15 to 20 cm thick)
Bk--41 to 104 cm; pale brown (10YR 6/3) extremely stony fine sandy loam, brown (10YR 5/3) moist; massive; hard, friable, slightly sticky and slightly plastic; few coarse, medium, fine and very fine roots; common fine and very fine pores; 25 percent stones, 20 percent cobbles and 15 percent gravel; violently effervescent (22 percent calcium carbonate equivalent), common soft powdery carbonate segregations, carbonate coats on bottom of rock fragments; moderately alkaline (pH 8.0); gradual smooth boundary. (63 to 127 cm thick)
C--104 to 152 cm; pale brown (10YR 6/3) extremely stony fine sandy loam, brown (10YR 5/3) moist; massive; slightly hard, friable, slightly sticky and slightly plastic; few coarse, medium, fine and very fine roots; few very fine pores; 25 percent stones, 20 percent cobbles and 15 percent gravel; strongly effervescent (16 percent calcium carbonate equivalent), carbonates are finely disseminated; moderately alkaline (pH 7.9).
TYPE LOCATION: Carbon County, Utah; [TWCI1]about 0.16 kilometers (0.1 mile) west of the Soldier Creek Mine; located about 2,500 feet west and 900 feet south of the NE corner section 18, T 13 S., R 12 E.; Pine Canyon USGS quad; lat. 39 degrees 42 minutes 00 seconds north and 110 degrees 36 minutes 58 seconds west., NAD 83
RANGE IN CHARACTERISTICS:
Soil moisture: Soil moisture control section is usually moist in some part during late spring to early fall, and intermittently dry in late fall. Ustic moisture regime.
Mean annual soil temperature: 4.4 to 6.7 degrees C.
Mean summer soil temperature: 16 to 19 degrees C.
Depth to the cambic horizon: 18 to 30 cm
Depth to the calcic horizon: 38 to 56 cm
Thickness of the mollic epipedon: 18 to 38 cm
Thickness of the cambic horizon: 15 to 20 cm
Thickness of the calcic horizon: 63 to 127 cm
Particle-size control section (weighted average):
Clay content: 16 to 27 percent
Fine sand and coarser sand content: greater than 15 percent
Rock fragment content: 35 to 70 percent
A horizon:
Hue: 10YR or 7.5YR
Value: 5 or 6 dry; 4 or 5 moist
Chroma: 2 to 4 dry or moist
Texture: loam, gravelly loam, very cobbly loam, extremely stony fine sandy loam
Clay content: 15 to 25 percent
Rock fragments: 2 to 80 percent total; 0 to 35 percent stones, 0 to 30 percent cobbles, 0 to 35 percent gravel
Calcium carbonate equivalent: 0 percent in the upper 18 cm; 0 to 5 percent below that depth
Reaction: neutral or slightly alkaline
AB horizon (present in some pedons):
Hue: 10YR or 7.5YR
Value: 5 or 6 dry; 4 or 5 moist
Chroma: 2 to 4 dry or moist
Texture: very cobbly loam
Clay content: 18 to 25 percent
Rock fragments: 35 to 60 percent total; 0 to 15 percent stones, 15 to 35 percent cobbles, 15 to 35 percent gravel
Calcium carbonate equivalent: 0 percent above a depth of 18 cm
Reaction: neutral or slightly alkaline
Bw horizon:
Hue: 10YR or 7.5YR
Value: 5 or 6 dry; 4 or 5 moist
Chroma: 2 to 4 dry or moist
Texture: gravelly loam, cobbly loam, very stony loam
Clay content: 18 to 27 percent
Rock fragments: 15 to 60 percent total; 0 to 30 percent stones, 0 to 20 percent cobbles, 5 to 30 percent gravel
Calcium carbonate equivalent: 1 to 10 percent
EC (mmhos/cm): 0 to 2
Reaction: neutral to moderately alkaline
Bk horizons, (BCk horizons present in some pedons):
Hue: 10YR or 7.5YR
Value: 5 to 7 dry; 4 to 6 moist
Chroma: 2 to 4 dry or moist
Texture: gravelly loam, gravelly clay loam, very gravelly loam, very cobbly loam, very stony loam, extremely stony fine sandy loam
Clay content: 16 to 30 percent
Rock fragments: 15 to 80 percent total; 0 to 35 percent stones, 0 to 35 percent cobbles, 10 to 50 percent gravel
Calcium carbonate equivalent: 5 to 30 percent
EC (mmhos/cm): 0 to 4
Reaction: slightly alkaline to strongly alkaline
C or BC horizon:
Hue: 2.5Y to 7.5YR
Value: 5 to 7 dry; 4 to 6 moist
Chroma: 2 to 6 dry or moist
Texture: very cobbly fine sandy loam, extremely stony fine sandy loam
Clay content: 3 to 20 percent
Rock fragments: 35 to 80 percent total; 0 to 30 percent stones, 15 to 35 percent cobbles, 15 to 35 percent gravel
Calcium carbonate equivalent: 5 to 20 percent
EC (mmhos/cm): 0 to 2
Reaction: slightly alkaline or moderately alkaline
COMPETING SERIES: These are the Anceney, Baahish, Bitton, Debeque and Syrett series. Anceney, Baahish, Debeque and Syrett soils do not have a cambic horizon. Baahish soils also have a lithologic discontinuity over very gravelly outwash. Bitton, Debeque and Syrett soils do not have a calcic horizon. Syrett soils have a lithic contact between a depth of 51 and 102 cm.
GEOGRAPHIC SETTING:
Parent material: colluvium and slope alluvium over residuum from calcareous sandstone and shale
Landform: mountain slopes
Slopes: 30 to 80 percent
Elevation: 2,042 to 2,865 meters
Mean annual temperature: 3.3 to 5.6 degrees C
Average summer temperature: 15 to 17.8 degrees C
Mean annual precipitation: 40 to 56 cm
Precipitation pattern: Wettest months are May to October and driest months are February to April.
Frost-free period: 60 to 90 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Comodore, Minnimaud and Tosca series. Comodore soils are shallow to bedrock and are on mountain ridgetops. Minnimaud and Tosca soils are calcareous to the soil surface, deep to bedrock and are intermixed with the Datino soils.
DRAINAGE AND PERMEABILITY: Well drained; high runoff; moderate permeability.
USE AND VEGETATION: Used for rangeland, wildlife habitat and watershed. Native vegetation is Douglas-fir, pinyon pine, Rocky Mountain juniper, Gambel oak, snowberry, mountain big sagebrush, birchleaf mountainmahogany, serviceberry, salina wildrye, Indian ricegrass, needleandthread, wheatgrass, and bluegrass.
DISTRIBUTION AND EXTENT: Eastern Utah, Southern Rocky Mountains, Carbon and Emery Counties; LRR E, MLRA 48A; small extent.
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:
Series control section: The zone from 0 to 200 cm.
Particle-size control section: The zone from 25 to 100 cm. (Bw and part of Bk horizons)
Mollic epipedon: The zone from 0 to 25 cm. (A horizon)
Cambic horizon: The zone from 25 to 41 cm. (Bw horizon)
Calcic horizon: The zone from 41 to 104 cm. (Bk horizon)
Entic feature: These soils are noneffervescent in the upper 18 to 25 cm and increase to strongly or violently effervescent in the calcic horizon. They have free carbonates throughout the cambic horizon or in all parts of the mollic epipedon below a depth of 25 cm from the mineral soil surface.
The assignment of the cation-exchange activity class is inferred from lab data from similar soils in the surrounding area.
Taxonomic Version: Classified according to Keys to Soil Taxonomy, Tenth Edition, 2006.
In October 2000, taxonomic classification was converted to the closest match found in Soil Taxonomy, Second Edition 1999. Some update was made to horizon nomenclature, competing series section, etc. Other placements may be more appropriate after a complete update.
In May 2008, the type location was moved to Carbon County, Utah, and the series concept was extensively revised.
These soils were formerly classified as Calcisols.