LOCATION ZUNDELL IDEstablished Series
TAXONOMIC CLASS: Coarse-silty, carbonatic Xeric Calcicryolls
TYPICAL PEDON: Zundell silt loam on 1 percent slope in a meadow at an elevation of 1827 meters. (Colors are for moist soil unless otherwise noted.)
A1--0 to 15 cm; brown (10YR 4/3) silty clay loam, light brownish gray (10YR 6/2) dry; moderate thin play structure parting to moderate fine and very fine granular; slightly hard, friable, slightly sticky and slightly plastic; many fine and very fine roots; common fine tubular pores; violently effervescent (55 percent calcium carbonate); strongly alkaline (pH 8.6); clear smooth boundary.
A2--15 to 30 cm; grayish brown (10YR 5/2) silty clay loam, light gray (2.5Y 7/1) dry; weak thin and medium platy structure parting to moderate fine granular; slightly hard, friable, slightly sticky and slightly plastic; common fine roots; many fine and very fine tubular, and common medium dendritic tubular pores; violently effervescent (59 percent calcium carbonate); moderately alkaline (pH 8.2); clear smooth boundary.
AB--30 to 43 cm; grayish brown (10YR 5/2) silty clay loam, light gray (2.5Y 7/1) dry; weak thick platy structure parting to moderate fine and very fine granular; slightly hard, friable, slightly sticky and slightly plastic; few fine roots; many fine and very fine tubular and common medium dendritic tubular pores; violently effervescent (59 percent calcium carbonate); moderately alkaline (pH 8.1); clear smooth boundary. (Combined thickness of the A and AB horizons 20 to 43 cm)
Bw--43 to 69 cm; light brownish gray (10YR 6/2) silty clay loam, light gray (2.5Y 7/1) dry; weak coarse prismatic structure parting to moderate fine and very fine granular; slightly hard, friable, slightly sticky and slightly plastic; few fine roots; many fine and very fine, and common medium tubular pores; violently effervescent (57 percent calcium carbonate); moderately alkaline (pH 8.1); abrupt wavy boundary. (0 to 26 cm thick)
Bk1--69 to 94 cm; light brownish gray (2.5Y 6/2) gravelly silt loam, light gray (2.5Y 7/2) dry; weak fine granular structure; extremely hard, friable, slightly sticky and slightly plastic; few very fine roots; common fine and very fine tubular pores; 15 percent fine irregular calcium carbonate nodules; strongly effervescent (35 percent calcium carbonate); moderately alkaline (pH 8.0); clear wavy boundary. (15 to 36 cm thick)
Bk2--94 to 107 cm; light olive brown (2.5Y 5/3) gravelly silt loam, light gray (2.5Y 7/2) dry; massive; very hard, firm, slightly sticky and slightly plastic; few very fine roots; common fine and very fine tubular pores; 5 percent fine irregular calcium carbonate nodules; many coarse faint yellowish brown (10YR 5/4) dry iron masses and few coarse faint dark grayish brown (10YR 4/2) dry iron masses; 10 percent gravel; strongly effervescent (30 percent calcium carbonate); moderately alkaline (pH 8.0); abrupt broken boundary. (7 to 17 cm thick)
2C--107 to 152 cm; brown (10YR 4/3) very gravelly loamy coarse sand, pale brown (10YR 6/3) dry; single grain, loose; nonsticky, nonplastic; 40 percent gravel; strongly effervescent (25 percent calcium carbonate); moderately alkaline (pH 8.1).
TYPE LOCATION: Teton County, Idaho; about 5.8 kilometers northwest of Driggs; 471 meters south and 14 meters west of the northeast corner of section 30, T. 5 N., R. 45 E.; Bates USGS topographic quadrangle; lat. 43 degrees, 44 minutes, 1 second N. and long. 111 degrees, 10 minutes, 48 seconds W., NAD 83.
RANGE IN CHARACTERISTICS:
Mollic epipedon thickness: 20 to 43 cm
Depth to calcic horizon: 25 to 69 cm
Depth to redoximorphic features (iron concentrations/depletions): 50 to 100 cm
Depth to sandy or sandy-skeletal material: greater than 100 cm
Control section total clay: 10 to 40 percent
Control section carbonate clay: 0 to 25 percent
Control section noncarbonate clay: 10 to 18 percent
Calcium carbonate equivalent in particle size control section: 30 to 60 percent (weighted
average is greater than 40 percent)
Rock fragments: 0 to 35 percent gravel in the particle size control section and 0 to 60 percent below the particle size control section, including calcium carbonate nodules.
Soil reaction: moderately alkaline to strongly alkaline
Mean annual soil temperature: 3.9 to 7.2 degrees C.
Mean summer soil temperature: 6.1 to 12.8 degrees C. (cryic soil temperature regime)
A and AB horizons
Hue: 10YR or 2.5Y dry
Value: 2 to 5 moist, 4 to 7 dry
Chroma: 1 to 3 moist or dry
Effervescence: slightly to violently effervescent
Calcium carbonate equivalent: 40 to 60 percent
Bw horizon
Hue: 10YR or 2.5Y dry
Value: 5 to 7 moist or dry
Chroma: 1 to 3 moist
Texture: SIL or SICL
Effervescence: slightly to violently effervescent
Calcium carbonate equivalent: 30 to 50 percent
Bk horizon
Hue: 10YR or 2.5Y moist or dry
Value: 5 to 7 moist, 7 or 8 dry
Chroma: 1 to 3 moist
Texture: SIL or SICL with 0 to 30 percent total fragments; 0 to 15 percent gravel; 0 to 30 percent gravel sized calcium carbonate nodules
Redoximorphic features (where they occur): hue 10YR or 7.5YR moist, 10YR dry; value 3 to 6 moist; chroma 2 to 8 moist, 5 to 8 dry
Calcium carbonate equivalent: 45 to 65 percent
2C horizon
Value: 4 or 5 moist
Texture: LS, LCOS or S with 0 to 60 percent gravel
Effervescence: very slightly to strongly effervescent
COMPETING SERIES: There are no other series in the same family.
GEOGRAPHIC SETTING:
Landscape: Outwash and alluvial plains
Landform: Terraces, rises, and hummocks on the valley floor and the lower parts of fan
remnants
Elevation: 1806 to 1859 meters
Slope: 0 to 2 percent
Parent material: silty alluvium over mixed alluvium
Mean annual air temperature: 3.3 to 6.7 degrees C
Mean annual precipitation: 305 to 457 mm
Frost free period: 20 to 50 days
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Cedron, Zohner, and Foxcreek soils. Cedron soils are on nearby flood plains and oxbows adjacent to rivers. Zohner soils are on relatively lower flats and terraces. Foxcreek soils are on drainageways that cross fan remnants or terraces. Cedron, Zohner, and Foxcreek all have aquic moisture regimes.
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class: somewhat poorly drained
Runoff: medium
Saturated hydraulic conductivity: moderately low in the upper part and high in the
horizons below the discontinuity
Flooding frequency and duration: rarely flooded from May to July
USE AND VEGETATION:
Major uses: pasture
Range/ecological site: R013XY039ID
Dominant native vegetation: Shrubby cinquefoil, slender wheat grass, baltic rush (and
other rushes), sedges, and redtop
DISTRIBUTION AND EXTENT:
Distribution: Southeastern Idaho, MLRA 13
Extent: The soils are not extensive
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Teton County, Idaho, 1973; Teton Area, Idaho-Wyoming
Soil Survey
REMARKS: Diagnostic horizons and soil characteristics recognized in this pedon are:
Mollic epipedon: from a depth of 0 to 43 cm; this pedon meets mollic criteria by having a fine-earth fraction that has a calcium carbonate equivalent of 40 percent or more and a color value, moist of 5 or less; some other pedons meet mollic criteria by being 18 to 25 centimeters thick (after mixing the upper 18 cm of mineral soil) and one-third or more of the total thickness between the mineral soil surface and the upper boundary of any identifiable secondary carbonates
Calcic horizon: from a depth of 69 to 107 cm
Calcium carbonate equivalent: greater than 40 percent in the particle size control section
Redoximorphic features (iron concentrations/depletions): beginning at a depth of 94 cm
Particle size control section: from a depth of 25 to 100 cm
Soil temperature regime: cryic
Soil moisture regime: xeric
ADDITIONAL DATA:
Lab data from NSSL, Lincoln, NE:
S57ID-081-016
Additional reference samples are PEDON ID:
S05ID-081-004
S05ID-081-002-001
S06ID-081-001