LOCATION FURY ID+OREstablished Series
TAXONOMIC CLASS: Fine-silty, mixed, superactive, frigid Cumulic Endoaquolls
TYPICAL PEDON: Fury silt loam - meadow. (Colors are for dry soil unless otherwise noted.)
A1--0 to 3 inches; dark gray (10YR 4/1) silt loam, black (10YR 2/1) moist; common fine distinct brown (10YR 5/3) stains around root channels; weak thin platy structure that parts to strong fine and medium granular; slightly hard, very friable, slightly sticky and slightly plastic; many very fine and fine roots; many very fine interstitial pores; neutral (pH 6.8); clear smooth boundary. (0 to 4 inches thick)
A2--3 to 10 inches; very dark gray (10YR 3/1), dark gray (10YR 4/1) crushed silty clay loam, black (10YR 2/1) crushed moist; common fine distinct brown (10YR 5/3) and pale brown (10YR 6/3) iron accumulations, mostly stains around root channels, brown (10YR 4/3) moist; very weak thin platy structure that parts to moderate fine and medium granular; hard, friable, moderately sticky and moderately plastic; common very fine and fine roots; many very fine tubular pores; neutral (pH 7.0); gradual wavy boundary. (5 to 15 inches thick)
Ag1--10 to 15 inches; very dark gray (10YR 3/1) silty clay loam, black (10YR 2/1) moist; few fine distinct brown (7.5YR 5/4) and pale yellow (2.5Y 7/4) iron accumulations, brown (7.5YR 4/4) and yellowish brown (10YR 5/4) moist; weak medium prismatic structure that parts to moderate very fine subangular blocky and medium granular structure; hard, friable, moderately sticky and moderately plastic; few roots; many very fine and fine tubular pores; neutral (pH 6.6); gradual wavy boundary. (0 to 10 inches thick)
Ag2--15 to 25 inches; dark gray (10YR 4/1), gray (10YR 5/1) crushed silty clay loam, very dark gray (10YR 3/1) moist; common fine distinct brown (10YR 4/3) and dark grayish brown (10YR 4/2) iron accumulations, very dark brown (10YR 2/2) moist; few fine distinct light yellowish brown (10YR 6/4) iron accumulations, brown (10YR 4/3) moist; weak medium prismatic structure that parts to moderate very fine and fine subangular blocky structure; hard, friable, moderately sticky and moderately plastic; few roots; many very fine and fine and few medium tubular pores; few uncoated silt particles on vertical surfaces of prisms; neutral (pH 6.8); gradual wavy boundary. (5 to 15 inches thick)
Ag3--25 to 43 inches; gray (10YR 5/1) silty clay loam, very dark gray (10YR 3/1) moist; many fine distinct brown (7.5YR 5/4), brown (7.5YR 4/2) and dark grayish brown (10YR 4/2) iron accumulations, dark brown (7.5YR 3/2), very dark brown (7.5YR 2/2) and very dark brown (10YR 2/2) moist; weak medium prismatic structure that parts to moderate medium and fine subangular blocky; very hard, friable, moderately sticky and moderately plastic; few roots; many very fine and fine tubular pores; moderate uncoated silt particles on vertical surfaces of prisms; neutral (pH 6.8); gradual wavy boundary. (10 to 25 inches thick)
Ag4--43 to 60 inches; gray (10YR 5/1) silty clay loam, very dark gray (10YR 3/1) moist; common fine distinct brown (7.5YR 4/3) and dark grayish brown (10YR 4/2) iron accumulations, very dark brown (7.5YR 2/2) and very dark brown (10YR 2/2) moist; weak medium prismatic structure that parts to weak medium and coarse subangular blocky structure; very hard, firm, moderately sticky and moderately plastic; few roots; many very fine and fine tubular pores; moderate uncoated silt particles on vertical surfaces of prisms; neutral (pH 6.9). (0 to 20 inches thick)
TYPE LOCATION: Bannock County, Idaho; southwest 1/4, northeast 1/4, northeast 1/4 of section 28, T. 5 S., R. 36 E.; 1 percent slope at 5,250 feet elevation.
RANGE IN CHARACTERISTICS: The mean annual soil temperature is 40 to 47 degrees F. and the mean summer temperature is 59 to 65 degrees F. The soils are usually moist and are saturated for 2 months or more unless artificially drained. The 10- to 40-inch control section is dominantly silty clay loam with thin layers of silt loam it has a weighted average of 27 to 35 percent clay and less than 15 percent particles coarser than very fine sand. The profile is noncalcareous, except that the surface 1 to 5 inches in some pedons is slightly calcareous. The mollic epipedon is 24 to 60 inches thick and has 1 to 8 percent organic matter It is slightly acid to slightly alkaline. Some pedons range to moderately alkaline in the upper of the A horizon. Depth to seasonal high water table ranges from +6 to 20 inches, January through June. Depth to redoximorphic features ranges from the lower part of the A horizon to 20 inches.
The A horizon has hue of 10YR or 2.5Y, value of 3 to 5 dry, 1 to 3 moist and chroma of 1 or 2 moist and dry. Chroma of 2 only occurs in the lower part of the mollic epipedon. It is silt loam, but some pedons have a 1 to 3 inch thick mucky surface. Structure is granular, platy or subangular blocky in the upper part and prismatic, subangular or granular in the lower part. The lower part has distinct or prominent redox iron accumulations.
Below a depth of 24 inches buried soils and deposits of volcanic ash layers can be present. When present, buried A horizons have color and texture similar to the surface A horizons. Volcanic ash layer have silt loam texture with hue of 10YR value of 7 or 8 dry, 4 to 6 moist and chroma of 2 or 3 moist, 1 dry.
COMPETING SERIES: These are the Housefield and Quam series. Housefield soils have 10 to 20 percent organic matter throughout the particle-size control section. Quam soils formed in calcareous glacial landscapes and have 19 to 24 inches of precipitation, with a udic climate.
GEOGRAPHIC SETTING: Fury soils are on level bottomlands or gently sloping alluvial fans or drainageways or floodplains/floodplain steps. Slopes are 0 to 4 percent. Elevations range from 4,000 to 6,600 feet. The soils formed in alluvium from mixed materials. The mean annual temperature is 41 to 45 degrees F. The mean annual precipitation is 10 to 20 inches. The freeze-free period is 50 to 120 days. The climate is xeric bordering aridic.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Housefield, Newdale, Opie, Rexburg and Skidoosprings soils. Newdale and Rexburg soils lack aquic conditions. Opie soils are calcareous. Skidoosprings soils are coarse-loamy and lack a mollic epipedon.
DRAINAGE AND PERMEABILITY: Poorly and very poorly drained; ponded to slow runoff; moderately slow permeability. frequent, occasional, or rare flooding and/or ponding for brief periods January through June.
USE AND VEGETATION: Used mainly for grazing and hay. The natural vegetation is chiefly sedges, tufted hairgrass, rushes, quackgrass, alkali bluegrass, Sandberg bluegrass, saltgrass, yarrow, lupine, three-tip sagebrush, silver sagebrush, shrubby cinquefoil, willow, wildrye, and wild rose.
DISTRIBUTION AND EXTENT: Valleys of southeastern Idaho and lake basins of southeastern Oregon. The series is of moderate extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Bozeman, Montana
SERIES ESTABLISHED: Bannock County, Idaho, 1973.
REMARKS: Diagnostic horizons and features recognized in this pedon are
Mollic epipedon from 0 to 60 inches.
Aquic conditions: moist chroma of 1 throughout profile with distinct redox accumulations throughout the profile.