LOCATION FOXCREEK ID+WYEstablished Series
TAXONOMIC CLASS: Fine-loamy over sandy or sandy-skeletal, mixed, superactive Typic Cryaquolls
TYPICAL PEDON: Foxcreek mucky peat on a 0 percent slope in a pasture at an elevation of 1838 meters. (Colors are for moist soil unless otherwise indicated.)
Oe--0 to 5 cm; very dark grayish brown (10YR 3/2) mucky peat, grayish brown (10YR 5/2) dry; slightly effervescent; moderately alkaline (pH 7.9); abrupt smooth boundary. (0 to 12 cm thick)
Ag--5 to 20 cm; very dark gray (10YR 3/1) loam, grayish brown (2.5Y 5/2) dry; weak medium and fine granular structure; hard, friable, slightly sticky and slightly plastic; many fine and few medium roots; many very fine tubular pores; many fine and medium prominent dark reddish brown (5YR 3/4) strong brown (7.5YR 5/6) dry iron masses; few fine gravel; neutral (pH 7.0); clear smooth boundary. (7 to 50 cm thick)
ABg--20 to 38 cm; very dark gray (10YR 3/1) loam, grayish brown (2.5Y 5/2) dry; weak very fine subangular blocky structure parting to weak medium and fine granular structure; hard, friable, slightly sticky and slightly plastic; many fine and few medium roots; many very fine and few medium tubular pores; common fine prominent dark reddish brown (5YR 3/4) iron masses, strong brown (7.5YR 5/6) dry; few fine gravel; neutral (pH 6.8); clear smooth boundary. (0 to 18 cm thick)
Bg1--38 to 54 cm; dark gray (2.5Y 4/1) loam, grayish brown (2.5Y 5/2) dry; weak fine and medium granular structure; hard, friable, slightly sticky and slightly plastic; common fine and medium roots; many very fine tubular pores; many fine and medium prominent dark reddish brown (5YR 3/4) iron masses, strong brown (7.5YR 5/6) dry; few gravel; neutral (pH 7.0); clear smooth boundary. (0 to 76 cm thick)
2Bg2--54 to 66 cm; dark grayish brown (10YR 4/2) very gravelly coarse sandy loam, light brownish gray (10YR 6/2) dry; massive; soft, very friable, slightly sticky and slightly plastic; few fine roots; many very fine pores; few fine distinct yellowish brown (10YR 5/4) dry iron masses; slightly effervescent; 40 percent gravel; moderately alkaline (pH 8.0); clear smooth boundary. (0 to 41 cm thick)
2Bkg--66 to 107 cm; dark grayish brown (10YR 4/2) very gravelly loamy sand, light brownish gray (10YR 6/2) dry; single grain; loose, nonsticky and nonplastic; slightly effervescent; calcium carbonate coats on bottoms of rock fragments; 45 percent gravel; moderately alkaline (pH 8.0); gradual wavy boundary.. (0 to 41 cm thick)
2Cg--107 to 152 cm; grayish brown (10YR 5/2) extremely gravelly coarse sand; single grain; loose, nonsticky and nonplastic; very slightly effervescent; moderately alkaline (pH 8.0); 55 percent gravel.
TYPE LOCATION: Teton County, Idaho; about 6.4 kilometers northwest of Driggs; 244 meters west and 61 meters north of the southeast corner of section 8, T. 5 N., R. 45 E.; Tetonia USGS topographic quadrangle; lat. 43 degrees, 46 minutes, 2 seconds N. and long. 111 degrees, 9 minutes, 51 seconds W., NAD 83.
RANGE IN CHARACTERISTICS:
Mollic epipedon thickness: 25 to 50 cm
Depth to calcic horizon (when present): 50 to 91 cm
Depth to redoximorphic features (iron concentrations/depletions): 0 to 12 cm
Depth to sandy-skeletal material: 50 to 91 cm
Rock fragments (weighted average): 0 to 30 percent in the upper part of the control section and 35 to 85 percent in the lower part of the control section
Clay content: 18 to 35 percent in the upper part of the control section and 1 to 10 percent in the lower part of the control section
Soil reaction: Neutral to strongly 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 temperature regime
Some pedons have an A horizon that lacks redoximorphic features.
Oe horizon
Effervescence: None to slight
Ag and ABg horizons
Hue: 10YR or 2.5Y moist and dry
Value: 2 or 3 moist
Chroma: 1 or 2 moist and dry
Texture: L, SIL, SICL with 0 to 25 percent gravel
Redoximorphic features : Hue 10YR to 5YR; value 3 to 5; chroma 1 to 6
Effervescence: none to very slight
Organic matter: 2 to 12 percent decreasing with depth
Bg horizon
Hue: 10YR or 2.5Y moist and dry
Value: 3 or 4 moist
Chroma: 1 or 2 moist and dry
Texture: L, SL, SIL, CL, SICL
Redoximorphic features: Hue 5YR to 2.5Y; value 3, 5 or 6; chroma 2 to 8
Effervescence: none to very slight
2Bg
Hue: 10YR or 2.5Y moist and dry
Value: 4 to 6 moist
Chroma: 1 to 3 moist and dry
Texture: SL, SIL, COSL, L with 15 to 50 percent gravel
Effervescence: none to very slight
2Bkg horizon (when present)
Hue: 10YR or 2.5Y moist and dry
Value: 4 to 6 moist
Chroma: 1 to 3 moist and dry
Texture: LS, S with 25 to 70 percent gravel and cobbles
Effervescense: slight to strong
Calcium carbonate: 5 to 15 percent
2Cg horizon
Hue: 10YR or 2.5Y moist and dry
Value: 3 to 6
Chroma: 1 to 3
Texture: S, COS, LS, LCOS with 10 to 85 percent gravel and cobbles
Redoximorphic features (when present): Hue: 10YR to 2.5YR, value 3 to 6, chroma 1 to 3
Effervescence: none to very slightly
COMPETING SERIES: These are the Mooseflat and Walden soils. Mooseflat soils are very poorly drained and do not have a calcic horizon or carbonates. Walden soils always have a calcic horizon with more than 15 percent calcium carbonate.
GEOGRAPHIC SETTING:
Landscape: Alluvial plains, outwash plains, and plateaus
Landform: Flood plains of rivers and streams on the valley floor and floodplains of drainageways on plateaus; drainageways that cross fan remnants, valley floors, or terraces
Elevation: 1676 to 1981 meters
Slope: 0 to 8 percent, dominantly less than 1 percent
Parent material: Mixed stratified alluvium
Mean annual precipitation: 305 to 457 mm including 1.8 to 2.1 meters of snow.
Precipitation is quite evenly distributed, but May and June have slightly more than the remaining months.
Mean annual air temperature: 3.3 to 6.7 degrees C
Frost free period: 20 to 50 days
GEOGRAPHICALLY ASSOCIATED SOILS: These are Zufelt, Furniss, Boquet, Zohner, Zundell, Driggs, Feltonia, Badgerton, Felt and Wiggleton soils on similar landforms. Zufelt soils have a calcic horizon within or immediately below the mollic epipedon. Furniss soils are very poorly drained and lack the contrasting particle-size class family. Boquet soils are located in nearby swales and slight depressions on valley floors and have a histic epipedon. Zohner and Zundell soils are on adjacent micro-highs and have carbonatic mineralogy. Driggs, Feltonia, Badgerton, Felt, and Wiggleton soils are on outwash and alluvial fans and have xeric soil moisture regimes.
DRAINAGE AND PERMEABILITY:
Drainage class: Poorly drained
Runoff: Low
Saturated hydraulic conductivity: Moderately high over very high.
Flooding frequency and duration: Occasional to frequent flooding for long periods in May to July
USE AND VEGETATION:
Major uses: Pasture and hay
Range/ecological site: R013XY038ID
Dominant native vegetation: Sedges, baltic rush, wiregrass, white dutch clover, red top, timothy and willows
DISTRIBUTION AND EXTENT:
Distribution: Eastern Idaho, MLRA 13
Extent: The series is not extensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Teton County, Idaho, 1966; Teton Area, Idaho-Wyoming Soil Survey
REMARKS: Diagnostic horizons and soil characteristics recognized in this pedon are:
Mollic epipedon: 5 to 38 cm
Calcic horizon: 66 to 107 cm
Redoximorphic features (iron concentrations/depletions): Beginning at a depth of 5 cm
Particle size control section: from a depth of 25 to 100 cm the upper part from 25 to 66 cm averages about 22 percent clay and 16 percent rock fragments (fine-loamy). The lower part averages about 5 percent clay and 45 percent rock fragments (sandy-skeletal).
Soil temperature regime: Cryic (depending on management; O horizons maybe absent, drained and undrained areas may occur and all areas are considered cryic).
Soil moisture regime: Aquic
ADDITIONAL DATA:
Lab data from NSSL, Lincoln, NE:
This pedon was not sampled.
Additional reference samples are PEDON ID S05ID-081-003-002.
The soil has a calcic horizon but is not a Calcic Cryaquoll as the calcic horizon is not within or directly below the mollic epipedon.