LOCATION WINEGAR IDEstablished Series
TAXONOMIC CLASS: Ashy, amorphic Typic Vitricryands
TYPICAL PEDON: Winegar gravelly silt loam, supporting a Douglas-fir/blue huckleberry community, woodland; on a 7 percent rolling slope with an east aspect; about 6,250 feet elevation. (Colors are for dry soil unless otherwise noted.)
Oi--1 to 0 inches; forest litter; abrupt smooth boundary.
A--0 to 4 inches; dark yellowish brown (10YR 4/4) gravelly silt loam, dark brown (10YR 3/3) moist; weak very fine granular structure; soft, very friable, nonsticky and slightly plastic; many very fine, common medium and few fine roots; many very fine irregular pores; 15 percent pebbles, trace cobbles, stones and boulders; moderately acid (pH 5.6); abrupt smooth boundary. (2 to 8 inches thick)
Bw1--4 to 14 inches; dark yellowish brown (10YR 4/4) silt loam, dark yellowish brown (10YR 3/4) moist; weak coarse subangular blocky structure; soft, very friable, nonsticky and slightly plastic; common very fine and few fine roots; common very fine tubular pores; 10 percent pebbles, trace cobbles, stones and boulders; moderately acid (pH 5.8); gradual smooth boundary. (6 to 16 inches thick)
Bw2--14 to 26 inches; yellowish brown (10YR 5/4) loam, dark yellowish brown (10YR 3/4) moist; weak coarse subangular blocky structure; soft, very friable, nonsticky and slightly plastic; common very fine and few fine roots; common very fine tubular pores; 10 percent pebbles, trace cobbles, stones and boulders; moderately acid (pH 6.0); abrupt irregular boundary. (5 to 30 inches thick)
BC--26 to 38 inches; light olive brown (2.5Y 5/4) very gravelly sandy loam, olive brown (2.5Y 4/4) moist; massive; soft, very friable; nonsticky and slightly plastic; many very fine and few fine roots; few very fine tubular pores; 50 percent, gray (10YR 5/1) cobble-size fragments of dense basal till; 25 percent pebbles, 10 percent cobbles and trace stones and boulders; slightly acid (pH 6.4); clear irregular boundary. (0 to 15 inches thick)
Cd--38 to 65 inches; gray (10YR 5/1) dense basal till that crushes to a very gravelly sandy loam, dark grayish brown (10YR 4/2) moist; massive; hard, firm and brittle, nonsticky and nonplastic; few very fine roots following the weathering rind; many very fine and few fine irregular pores; common fine (less than 5 mm thick) distinct (10YR 3/4 moist) weathering rind around coarse pebbles, cobbles, stones and boulders; 25 percent pebbles, 10 percent cobbles, trace stones and boulders; slightly acid (pH 6.5).
TYPE LOCATION: Fremont County, Idaho; about 18 miles east of Ashton, Idaho: about 2800 feet north and 1200 feet east of the southwest corner section 12., T. 9 N., R. 46 E. Latitude - 44 degrees North, 7 minutes, 18 seconds. Longitude - 111 degrees West, 5 minutes, 21 seconds.
RANGE IN CHARACTERISTICS:
Thickness of andic soil properties - 20 to 40 inches
Depth to dense basal till - 20 to 40 inches
Rock fragments in particle size control section, weighted average - 15 to 35 percent
Base saturation by ammonium acetate - 10 to 40 percent
Reaction - strongly acid to slightly acid
Mean annual soil temperature - 37 to 41 degrees F.
Mean summer soil temperature - 42 to 46 degrees F.
Moisture control section - between 4 and 12 inches; dry throughout the moisture control section for less than 30 consecutive days during the four months following the summer solstice
A horizon
Hue - 10YR or 7.5YR
Value - 4 or 5 dry, 3 or 4 moist
Chroma - 2 through 4 dry or moist
Rock fragment content - 15 to 25 percent
Pebbles - 15 to 20 percent
Cobbles - 0 to 5 percent
Stones - 0 to 5 percent
Volcanic glass content - 5 to 20 percent in the 0.02 2.0 mm size fraction
Bulk density - 0.9 to 1.10 grams per cubic centimeter
Acid oxalate extractable Al plus 1/2 Fe - 2.0 to 4.0 percent
15 bar water retention - 4 to 10 percent on air dried samples
Phosphate retention - 50 to 85 percent
Bw horizons
Hue - 10YR or 7.5YR
Value - 5 or 6 dry, 3 or 4 moist
Chroma - 4 or 6 dry or moist
Texture, less than 2 mm fraction - loam, silt loam, or sandy loam
Rock fragment content - 5 to 30 percent
Pebbles - 5 to 25 percent
Cobbles - 0 to 10 percent
Stones - 0 to 5 percent
Volcanic glass content - 5 to 20 percent in the 0.02 2.0 mm size fraction
Bulk density - 1.0 to 1.3 grams per cubic centimeter
Acid oxalate extractable Al plus 1/2 Fe - 2.0 to 4.0 percent
15 bar water retention - 4 to 10 percent on air dried samples
Phosphate retention - 50 to 85 percent
BC horizon
Hue - 2.5Y through 7.5YR
Value - 5 or 6 dry, 3 or 4 moist
Chroma - 4 or 6 dry or moist
Texture, less than 2 mm fraction - loam or sandy loam
Rock fragment content - 35 to 60 percent
Pebbles - 25 to 45 percent
Cobbles - 0 to 20 percent
Stones - 0 to 5 percent
Dense basal till fragments - 15 to 85 percent
Volcanic glass content - less than 10 percent in the 0.02 2.0 mm size fraction
Bulk density - 1.3 to 1.5 grams per cubic centimeter
Acid oxalate extractable Al plus 1/2 Fe - 1.0 to 3.0 percent 15 bar water retention - 4 to 10 percent on air dried samples
Phosphate retention - 25 to 60 percent
Other: Horizon is discontinuous in some pedons.
Cd horizon
Hue - 2.5Y or 10YR
Value - 5 or 6 dry, 3 or 4 moist
Chroma - 1 or 2 dry or moist
Texture, less than 2 mm fraction, crushed - sandy loam or loamy sand
Rock fragment content - 25 to 60 percent
Pebbles - 25 to 45 percent
Cobbles - 0 to 10 percent
Stones - 0 to 5 percent
Bulk density - 1.8 to 2.1 grams per cubic centimeter
Ammonium oxalate extractable Al plus 1/2 Fe - less than 0.4 percent
COMPETING SERIES: These are the Belrick, and Linksterly series. Belrick soils have 75 to 85 percent volcanic glass and glass coated aggregates in the minerology control section. Lindsterly soils hae umbric epipedons.
GEOGRAPHIC SETTING: Winegar soils are on undulating to rolling ground moraines. Slopes range from 4 to 15 percent. The soil formed in glacial till derived from mixed volcanic rock. There is some loess and volcanic ash influence in the upper part. Surface and subsoil layers of these soils are lightly reworked by colluvial or alluvial action. Substratums are dense basal till. Elevations range from 6200 to 9900 feet. Average annual precipitation is 30 to 45 inches being well-distributed throughout the year. Average annual temperature is 32 to 39 degrees F. The frost free period is 5 to 70 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the tentative Bradco soils. Bradco soils are found intermixed with Winegar soils. They have umbric epipedons and are well drained.
DRAINAGE AND PERMEABILITY: Moderately well drained; slow to rapid runoff; moderately slow permeability.
USE AND VEGETATION: Winegar soils are used for wildlife habitat, recreation and woodland. These soils commonly support lodgepole pine/grouse whortleberry, lodgepole pine/pinegrass, and lodgepole pine/blue huckleberry community types. The potential native vegetation is a subalpine fir/grouse whortleberry plant association, pinegrass phase or subalpine fir/blue huckleberry plant association, grouse whortleberry phase.
DISTRIBUTION AND EXTENT: Northwestern Wyoming and southeastern Idaho. The soil of this series are of moderate extent.
MLRA OFFICE RESPONSIBLE: Bozeman, Montana.
SERIES ESTABLISHED: Targhee National Forest, Fremont County, Idaho, 1997.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - The zone from the mineral soil surface to 4 inches (A horizon).
Cambic horizon - The zone from 4 to 38 inches (Bw1, Bw2 and BC horizons).
Andic soil properties - The zone from the mineral soil surface to 26 inches (A, Bw1, and Bw2 horizons).
Dense basal till - The zone from 38 to 60 inches (the Cd horizon).
Particle size control section - The zone from 10 to 38 inches (part of the Bw1, the Bw2 and BC horizons).
Moisture regime - udic.
ADDITIONAL DATA: Full characterization data (8/26/96), National Soil Survey Laboratory, Lincoln, NE. Client assigned lab number: S94ID-043-001. Project file number: 95P-27; Lab assigned number: peon 95P 148; samples: 95P 1020-1024.