LOCATION CINDERBUTTE ID

Established Series
Rev. WGH/GAH
09/2018

CINDERBUTTE SERIES

The Cinderbutte series consists of moderately deep to cinders, well drained soils that formed in loess and eolian sand overlying tephra. Cinderbutte soils are on fissure vents and volcanic cones on lava fields. Slopes range from 1 to 20 percent. The mean annual temperature is 4 degrees C, and the mean annual precipitation is about 381 mm.

TAXONOMIC CLASS: Loamy over pumiceous or cindery, mixed, superactive Xeric Haplocryolls

TYPICAL PEDON: Cinderbutte loam on a south-facing, convex, 3 percent slope, under shrubs at an elevation of 1963 meters. (Colors are for dry soil unless otherwise stated. When described on September 7, 2005, the soil was dry throughout)

A1--0 to 5 cm; dark brown (10YR 3/3) loam, very dark brown (10YR 2/2) moist; weak thin platy structure parting to moderate fine granular; slightly hard, very friable, slightly sticky and slightly plastic; many very fine and common fine roots; many very fine irregular pores; neutral (pH 7.0); clear smooth boundary.

A2--5 to 18 cm; dark brown (7.5YR 3/3) loam, very dark brown (7.5YR 2.5/2) moist; moderate fine and medium subangular blocky structure; slightly hard, very friable, slightly sticky and slightly plastic; many very fine and common fine, medium, coarse and very coarse roots; many very fine and common fine tubular pores; neutral (pH 7.0); clear wavy boundary. (Combined thickness of A horizons range from 5 to 18 cm)

AB--18 to 33 cm; brown (7.5YR 4/2) loam, dark brown (7.5YR 3/2) moist; moderate fine, medium and coarse subangular blocky structure; slightly hard, very friable, slightly sticky and slightly plastic; many very fine and common fine, medium and coarse roots; many very fine and common fine tubular pores; neutral (pH 7.2); gradual wavy boundary. (15 to 28 cm thick)

Bw--33 to 54 cm; brown (10YR 4/3) loam, dark yellowish brown (10YR 3/4) moist; weak coarse prismatic structure parting to moderate medium and coarse subangular blocky; hard, friable, slightly sticky and slightly plastic; many very fine and common fine, medium and coarse roots; many very fine and common fine tubular pores; slightly alkaline (pH 7.4); clear wavy boundary. (15 to 22 cm thick)

2BC--54 to 69 cm; brown (10YR 4/3) very gravelly coarse sandy loam, dark yellowish brown (10YR 3/4) moist; weak very fine and fine subangular blocky structure; slightly hard, very friable, slightly sticky and slightly plastic; common very fine and fine roots; common very fine irregular pores; 45 percent gravel sized cinders and 10 percent cobble sized cinders; slightly alkaline (pH 7.6); abrupt wavy boundary. (15 to 23 cm thick)

2C--69 to 152 cm; fragmental material (50 percent gravel sized and 50 percent cobble sized cinders.)

TYPE LOCATION: Clark County, Idaho; about 21 kilometers east and 11 kilometers north of Dubois, Idaho; 630 meters west and 62 meters south of the northeast corner of sec. 22, T. 11N., R. 38E.; USGS Idmon topographic quadrangle; latitude 44 degrees, 16 minutes, 27 seconds N. and longitude 111 degrees, 57 minutes, 44 seconds W., NAD 83

RANGE IN CHARACTERISTICS:

Mean annual soil temperature: 4 to 6 degrees C. Cryic soil temperature regime
Mean summer soil temperature: 12 to 15 degrees C.
Soil moisture control section: Usually moist, and they are dry in all parts for 45 consecutive days or more in the four months following the summer solstice.
Thickness of mollic epipedon: 25 to 51 cm
Depth to fragmental material: 61 to 91 cm
Depth to bedrock: Greater than 152 cm
Noncarbonate clay content: The upper part of the particle size control section is 10 to 20 percent.
Rock fragments: The upper part of the particle size control section averages 10 to 25 percent gravel and cobbles; the lower part of the particle size control section is 90 to 100 percent.

A and AB horizon
Hue: 10YR or 7.5YR
Value: 2 through 4 moist or dry
Chroma: 2 or 3 moist or dry
Noncarbonate clay content: 10 to 15 percent
Rock fragments: 0 to 5 percent gravel

Bw horizon
Hue: 10YR or 7.5YR
Value: 3 or 4 moist or dry
Chroma: 2 through 4 moist or dry
Textures: VFSL, L
Noncarbonate clay content: 10 to 20 percent
Rock fragments: 0 to 10 percent gravel

2BC horizon
Value: 3 through 5 moist or dry
Chroma: 3 or 4 moist or dry
Textures: GRV-COSL, GRV-FSL
Noncarbonate clay content: 12 to 15 percent clay
Rock fragments: 35 to 60 percent total; 25 to 50 percent gravel and 1 to 10 percent cobbles

2C horizon
Rock fragments: 90 to 100 percent total; 45 to 70 percent gravel and 30 to 55 percent cobbles

COMPETING SERIES: There are no competing series.

GEOGRAPHIC SETTING:
Landscape: Lava fields
Landform: Fissure vents and volcanic cones
Elevation: 1768 to 2012 meters
Slope: 1 to 20 percent
Parent Material: eolian sand and loess over cinders
Climate: long, cool winters; dry, warm summers
Mean annual precipitation: 406 to 508 mm
Mean annual air temperature: 3 to 5 degrees C.
Frost-free period: 40 to 80 days

GEOGRAPHICALLY ASSOCIATED SOILS: These are Crystalbutte, Vadnais, Katseanes, Vickton and Pinebutte soils. Crystalbutte soils are fine-loamy and located on fissure vents and volcanic cones. Vadnais soils are moderately deep to bedrock and located on lava flow pressure ridges and tumuli. Katseanes soils are shallow to bedrock and located on lava flow pressure ridges and tumuli. Pinebutte soils are very deep fine-silty soils located on smooth and concave positions on Pahoehoe lava flows. Vickton soils are deep to bedrock, fine-loamy and located on smooth and concave positions on Pahoehoe lava flows.

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class: Well drained
Runoff: Low to medium runoff
Saturated hydraulic conductivity: Moderately high over very high.

USE AND VEGETATION:
Major uses: Wildlife habitat, rangeland and gravel pits.
Range/ecological site: R013XY029ID
Dominant native vegetation: mountain big sagebrush, antelope bitterbrush, Idaho fescue, prairie junegrass, bluebunch wheatgrass, needleandthread, bluegrass, buckwheat, pussytoes, and sego lily.
DISTRIBUTION AND EXTENT: Southeastern Idaho; MLRA 13. The soils are of small extent

SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Portland, Oregon

SERIES ESTABLISHED: Clark County, Idaho, 2018

REMARKS: Diagnostic horizons and features recognized in this pedon are:
Mollic epipedon: the zone from 0 to 33 cm (A1, A2 and AB horizons)
Cambic horizon: the zone from 33 to 54 cm (Bw horizon)
Fragmental layer: the zone below 69 cm (2C horizon)
Particle-size control section: The particle size control section is from a depth of 25 to 100 cm. The upper part of the strongly contrasting particle size class is from a depth of 25 to 69 cm, averages 19 percent rock fragments (loamy) and the lower part from 69 to 100 cm is 100 percent rock fragments (fragmental; cindery).
Soil temperature regime: Cryic
Soil moisture regime: Xeric

National Cooperative Soil Survey
U.S.A.