LOCATION BOQUET IDTentative Series
The Boquet series consists of very deep, very poorly drained soils that formed in residual material from herbaceous material overlying mixed alluvium. These soils form in marshes, swales, and flood plains of narrow streams on slopes 0 to 1 percent. The mean annual precipitation is about 406 millimeters and the mean annual air temperature is about 5 degrees C.
TAXONOMIC CLASS: Fine-loamy, mixed, superactive Histic Cryaquolls
TYPICAL PEDON: Boquet mucky peat on 1 percent slope in a wet meadow at an elevation of 1836 meters. (Colors are for moist soil unless otherwise indicated.)
Oe--0 to 20 cm; black (7.5YR 2.5/1) broken face mucky peat, black (5YR 2.5/1) rubbed; about 15 percent rubbed fibers; few very fine and fine roots and common medium roots; neutral (pH 6.8); clear wavy boundary. (20 to 33 cm thick)
A1--20 to 36 cm; black (7.5YR 2.5/1) mucky silty clay loam, black (10YR 2/1) dry; massive; extremely hard, firm, moderately sticky and moderately plastic; few very fine and fine and common medium roots; many very fine irregular pores; slightly alkaline (pH 7.7); abrupt wavy boundary.
A2--36 to 55 cm; black (N 2/0) clay, very dark gray (10YR 3/1) dry; massive; extremely hard, firm, moderately sticky and very plastic; few very fine and fine roots; many very fine irregular pores; common medium gray (2.5Y 5/1) iron depletions; slightly effervescent; slightly alkaline (pH 7.7); abrupt wavy boundary. (Combined thickness of the A horizon is 10 to 35 cm)
Bg1--55 to 67 cm; greenish gray (10Y 6/1) silty clay loam, light brownish gray (10YR 6/2) dry; massive; extremely hard, firm, moderately sticky and very plastic; few fine roots; slightly alkaline (pH 7.8); clear wavy boundary. (0 to 13 cm thick)
2Bg2--67 to 108 cm; gray (2.5Y 5/1) gravelly loam, grayish brown (2.5Y 5/2) dry; massive; extremely hard, firm, moderately sticky and very plastic; common medium roots; common irregular pores; 30 percent gravel; very slightly effervescent; moderately alkaline (pH 8.0); clear smooth boundary. (0 to 41 cm thick)
2BCg--108 to 153 cm; gray (2.5Y 6/1) very gravelly sandy loam; massive; slightly sticky and slightly plastic; common irregular pores; 45 percent gravel.
TYPE LOCATION: Teton County, Idaho; about 3.2 kilometers south and 3.8 kilometers west of Driggs; 200 meters east and 300 meters south of the northwest corner of sec. 9, T. 4 N., R. 45 E.; Bates USGS topographic quadrangle; lat.43 degrees, 41 minutes, 29 seconds N. and long. 111 degrees, 9 minutes, 31 seconds W., NAD 83.
RANGE IN CHARACTERISTICS:
Mollic epipedon thickness: 25 to 55 cm
Histic epipedon thickness: 20 to 33 cm
Depth to redoximorphic features (iron concentrations/depletions): 23 to 36 cm
Particle-size control section: averages 20 to 35 percent clay and 0 to 35 percent gravel
Depth to the 2Bg or 2BCg horizon: 41 to 142 cm
Soil reaction: Slightly to moderately alkaline
Mean annual soil temperature: 1.7 to 5.6 degrees C.
Mean summer soil temperature: 4.4 to 6.1 degrees C. (cryic temperature regime)
A horizon
Hue: 7.5YR, 10YR, N moist and dry
Value: 2 to 3 moist and dry
Chroma: 0 to 2 moist and dry
Texture: MK-SICL, C, SIL
Bg horizon (where present)
Hue: 10Y or 10YR moist or dry
Value: 3 to 6 moist or dry
Chroma: 1 or 2 moist or dry
Redoximorphic features (where they occur): value 3 or 4, chroma 4 or 6 moist iron concentrations
Calcium carbonate equivalent: less then 5 percent
2Bg or 2BCg horizons (where present)
Hue: 2.5Y, 10Y, 10YR moist or dry
Value: 3 to 6 moist or dry
Chroma: 1 or 2 moist or dry
Texture: GRV-SL, GR-L, GR-SICL
Rock fragments: 15 to 50 percent
Calcium carbonate equivalent: less then 5 percent
COMPETING SERIES: There are no other series in the family.
GEOGRAPHIC SETTING:
Landscape: Outwash plain and alluvial plains
Landform: Valley floor, marshes, swales, flood plains of narrow streams, and fan remnants,
particularly the lower portion of fan remnants where they have been reworked by streams.
Elevation: 1826 to 1847 meters
Slope: 0 to 1 percent
Parent material: Herbaceous materials over stratified mixed alluvium
Mean annual precipitation: 305 to 457 millimeters
Mean annual air temperature: 3.3 to 6.7 degrees C
Frost free period: 20 to 50 days
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Furniss, Cedron, Tepete, and Zundell soils. Furniss soils do not have a histic epipedon. Cedron soils have carbonatic mineralogy. Tepete soils are histosols. Furniss and Tepete are located in adjacent swales and depressions. Zundell soils are somewhat poorly drained and are on adjacent mounds.
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class: Very poorly drained
Runoff: Negligible
Saturated hydraulic conductivity: Low or moderately low over moderately high
Flooding frequency and duration: Frequent flooding for long periods in May to July
USE AND VEGETATION:
Major uses: Range and wildlife habitat
Range/ecological site: R013XY038ID
Dominant native vegetation: Baltic rush, Nebraska sedge, elk sedge, bulbous bluegrass, tufted hair
grass, redtop, shrubby cinquefoil, and willow
DISTRIBUTION AND EXTENT:
Distribution: Eastern Idaho, MLRA 13
Extent: The series is not extensive
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon
SERIES PROPOSED: Teton County, Idaho, 2006; Teton Area, Idaho-Wyoming Soil Survey
REMARKS: Boquet soils were previously mapped as Furniss and Tepete.
Diagnostic horizons and soil characteristics recognized in this pedon are:
Mollic epipedon: from a depth of 20 to 55 cm
Histic epipedon: from a depth of 0 to 20 cm
Redoximorphic features (iron concentrations/depletions): Beginning at a depth of 36 cm
Particle size control section: from a depth of 25 to 100 cm. and averages 13 percent gravel
Soil temperature regime: Cryic
Soil moisture regime: Aquic
ADDITIONAL DATA:
Lab data from NSSL, Lincoln, NE:
This pedon was sampled as PEDON ID S05ID081-005.