LOCATION FURNISS ID+WYEstablished Series
TAXONOMIC CLASS: Fine-loamy, mixed, superactive Typic Cryaquolls
TYPICAL PEDON: Furniss mucky peat on 0 percent slope in pasture at an elevation of 1828 meters. (Colors are for moist soil unless otherwise noted.)
Oe--0 to 5 cm; very dark brown (10YR 2/2) mucky peat, very dark grayish brown (10YR 3/2) dry; slightly alkaline (pH 7.8); clear wavy boundary. (0 to 15 cm thick)
A1--5 to 20 cm; black (10YR 2/1) silty clay loam, very dark gray (10YR 3/1) dry; moderate very fine and fine subangular and angular blocky structure parting to weak fine granular; very hard, firm, moderately sticky and moderately plastic; many fine and very fine, common medium, and few coarse roots; common very fine tubular pores; few fine prominent reddish brown (5YR 4/4) iron masses, strong brown (7.5YR 5/6) dry; slightly alkaline (pH 7.8); clear wavy boundary.
A2--20 to 33 cm; black (10YR 2/1) silty clay loam, dark gray (10YR 4/1) dry; moderate very fine and fine subangular and angular blocky structure parting to weak fine granular; very hard, firm, moderately sticky and moderately plastic; common fine and very fine and few medium roots; few uncoated silt grains; few fine prominent reddish brown (5YR 4/4) iron masses, strong brown (7.5YR 5/6) dry; slightly alkaline (pH 7.8); clear wavy boundary. (The combined thickness of the A horizon is 25 to 50 cm thick.)
Cg1--33 to 46 cm; gray (5Y 5/1) silty clay loam, light gray (5Y 7/1) dry; massive; very hard, firm, moderately sticky and moderately plastic; common fine and very fine and few medium roots; common very fine and fine tubular pores; many medium and coarse faint or distinct light olive brown (2.5Y 5/4) iron masses, pale olive (5Y 6/3) dry and few fine prominent dark yellowish brown (10YR 4/4) iron masses, yellowish brown (10YR 5/4) dry; slightly effervescent; moderately alkaline (pH 8.0); abrupt smooth boundary.
Cg2--46 to 71 cm; gray (5Y 5/1) silty clay loam, gray (5Y 6/1) dry; massive; very hard, firm, moderately sticky and moderately plastic; common fine and very fine and few medium roots; few very fine and fine tubular pores; few fine prominent brown (7.5YR 4/4) iron masses, yellowish brown (10YR 5/6) dry; moderately alkaline (pH 8.0); abrupt wavy boundary.
Cg3--71 to 81 cm; dark gray (2.5Y 4/1) silty clay loam, gray (2.5Y 6/1) dry; massive; very hard, firm, moderately sticky and moderately plastic; common very fine and fine and few medium roots; few very fine and fine tubular pores; very few very fine iron-manganese masses; few fine faint yellowish brown (10YR 5/4) iron masses, very pale brown (10YR 7/4) dry; slightly alkaline (pH 7.8); abrupt smooth boundary. (The combined thickness of the Cg horizons is 28 to 100 cm thick.)
2Cg4--81 to 94 cm; dark gray (5Y 4/1) fine sandy loam, gray (5Y 6/1) dry; massive; hard, friable, slightly sticky and slightly plastic; few very fine and fine roots; few very fine tubular pores; few fine distinct strong brown (7.5YR 5/6) dry iron masses; few thin lenses of fine sand; very slightly effervescent; slightly alkaline (pH 7.8); abrupt wavy boundary. (0 to 25 cm thick)
3Cg5--94 to 109 cm; dark gray (5Y 4/1) very gravelly coarse sandy loam, gray (5Y 6/1) dry; massive; very friable, slightly sticky and slightly plastic; few very fine and fine roots; 40 percent gravel; slightly effervescent; moderately alkaline (pH 8.0); clear wavy boundary. (0 to 25 cm thick)
3Cg6--109 to 152 cm; very gravelly sand; single grain; loose; nonsticky and nonplastic; 45 percent gravel; slightly effervescent; moderately alkaline (pH 8.0).
TYPE LOCATION: Teton County, Idaho; about 4.8 kilometers southwest of Driggs; 274 meters south and 262 meters east of the northwest corner of section 9, T. 45 N., R. 45 E.; Bates USGS topographic quadrangle; lat. 43 degrees, 41 minutes, 30 seconds N. and long. 111 degrees, 9 minutes, 28 seconds W., NAD 83.
RANGE IN CHARACTERISTICS:
Mollic epipedon thickness: 25 to 50 cm
Depth to calcic horizon (when present): 94 to 145 cm
Depth to redoximorphic features (iron concentrations/depletions): 0to 27 cm
Depth to sandy-skeletal material (3Cg6 horizon): 100 to 152 cm
Particle-size control section: averages 25 to 35 percent clay and 5 to 15 percent rock fragments
Soil reaction: Slightly to moderately alkaline
Mean annual soil temperature: 1.7 to 7.2 degrees C.
Mean summer soil temperature: 4.4 to 12.8 degrees C. (The O horizon is not always present) cryic soil temperature regime
Oe horizon (when present)
Effervescence: None to slight
A horizon
Hue: 7.5YR to 2.5Y, N moist or dry
Value: 1 to 3 moist
Chroma: 0 to 2 moist
Texture: SICL, SIL, SIC
Redoximorphic features: Hue 5YR to 2.5Y moist; value 3 to 5 moist; chroma 1 to 6 moist
Organic matter: 6 to 20 percent decreasing with depth
Cg horizon (when present)
Hue: 7.5YR to 5Y moist or dry
Value: 3 to 6 moist, 6 or 7 dry
Chroma: 1 or 2 moist
Texture: SICL, L, CL, SIL
Redoximorphic features: 10 GY, 7.5YR to
2.5Y, values 3 to 5, chroma 1 to 8
Bk or Bkg horizon (when present)
Value: 4 or 5 moist
Chroma: 2 or 3 moist
Texture: SIL, L, SL
Redoximorphic features: Value 4 or 5 moist; chroma 4 or 6
2Cg and upper part of the 3Cg horizon (when present)
Hue: 5Y or 5B moist
Value: 4 or 5 moist, 4 or 6 dry
Texture: FSL, COSL, SL, with 0 to 50 percent gravel
Redoximorphic features (when they occur): Hue 10YR or 7.5YR moist
Lower part of the 3Cg horizon
Texture: S with 35 to 70 percent gravel
COMPETING SERIES: These are the Blackwell, Foolhen, Haydenfork, Retaw and Vensora soils. Blackwell soils are neutral to moderately acid and have stratified sandy material at 20 to 40 inches. Foolhen soils lack the sandy-skeletal material at 40 to 60 inches. Vensora soils have loamy-skeletal material at 40 to 60 inches. Haydenfork soils are slightly too moderately acid and lack the sandy-skeletal material 40 to 60 inches. Retaw soils are very poorly drained and have a peraquic moisture regime soils.
GEOGRAPHIC SETTING:
Landscape: Outwash plains, alluvial plains
Landform: Flats, swales and drainageways mostly on valley floors and sometimes on
fan remnants
Elevation: 1676 to 2012 meters
Slope: 0 to 1 percent
Parent material: Alluvium from granite, quartzite, limestone, gneiss, sandstone,
and rhyolite
Mean annual precipitation: 305 to 457 mm
Mean annual air temperature: 3.3 to 6.7 degrees C
Frost free period: 20 to 50 days
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Boquet, Tepete, Foxcreek, Zohner, Zufelt, and Zundell soils. Boquet soils are located in depressions on the same landforms as Furniss soils and have a histic epipedon. Tepete soils are found in adjacent swales and marshes and are histosols. Foxcreek soils can be on similar landforms but are also found on fan remnants and have a contrasting particle size class. Zohner, Zufelt and Zundell soils are found on adjacent mounds. Zohner and Zufelt belong to a calcic subgroup; Zundell soils have a xeric soil moisture regime.
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class: Very poorly drained
Runoff: Negligible
Saturated hydraulic conductivity: Moderately low over very high
Flooding frequency and duration: Frequent flooding for long periods in May to July
USE AND VEGETATION:
Major uses: Wet meadow pasture; if artificially drained, small grain or hay
Range/ecological site: R013XY038ID
Dominant native vegetation: Willows, shrubby cinquefoil, sedges, rushes
DISTRIBUTION AND EXTENT:
Distribution: Eastern Idaho, MLRA 13
Extent: Moderately extensive
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Teton County, Idaho, 1975; Teton Area, Idaho-Wyoming
Soil Survey
REMARKS: Diagnostic horizons and soil characteristics recognized in this pedon are:
Mollic epipedon: From a depth of 5 to 33 cm
Redoximorphic features (iron concentrations/depletions): Beginning at a depth of 5 cm
Particle size control section: From a depth of 30 to 105 cm and averages 6 percent gravel
Soil temperature regime: Cryic
Soil moisture regime: Aquic