LOCATION CABINCREEK              OR

Established Series
Rev: JLW/RJO/DAL
10/2012

CABINCREEK SERIES

Cabincreek series consists of deep, well-drained soils on north aspect canyon slopes of dissected plateaus. They formed in mixed volcanic ash and loess over colluvium from metavolcanic bedrock. Slopes are 60 to 90 percent. Mean annual precipitation is about 12 inches and mean annual temperature about 47 degrees F.

TAXONOMIC CLASS: Coarse-loamy, mixed, superactive, mesic Vitrandic Haploxerolls

TYPICAL PEDON: Cabincreek ashy sandy loam - on an 85 percent planar northeastfacing slope at 2,000 feet in elevation. (Colors are for dry soil unless otherwise noted.)

A1--0 to 10 inches; black (10YR 2/1) ashy sandy loam, very dark gray (10YR 3/1) dry; weak to moderate fine granular structure; soft, very friable, nonsticky and nonplastic; many fine roots; many fine irregular pores; 10 percent gravel; neutral (pH 6.6); gradual smooth boundary. (8 to 22 inches thick)

A2--10 to 20 inches; black (10YR 2/1) ashy sandy loam, very dark grayish brown (10YR 3/2) dry; weak medium and fine subangular blocky structure; soft, very friable, nonsticky and nonplastic; common fine roots; few fine irregular and common fine tubular pores; 10 percent gravel; neutral (pH 6.6); gradual smooth boundary. (10 to 13 inches thick)

2AB--20 to 28 inches, very dark grayish brown (10YR 3/2), gravelly sandy loam, dark grayish brown (10YR 4/2) dry; weak medium subangular blocky structure; soft, very friable, nonsticky and nonplastic; few fine roots; few fine tubular pores; 20 percent gravel; neutral (pH 6.6); gradual smooth boundary. (8 to 18 inches thick)

2BC--28 to 42 inches; dark grayish brown (10YR 4/2) gravelly sandy loam, brown (10YR 4/3) dry; single grain; loose, nonsticky and nonplastic; few fine roots; 20 percent gravel, 5 percent cobbles and 5 percent stones; neutral (pH 6.6); abrupt irregular boundary. (8 to 20 inches thick)

R--42 inches; indurated metavolcanic bedrock

TYPE LOCATION: Wallowa County, Oregon
Section 25 (NW 1/4, SE 1/4, SW 1/4), T. 05 N., R. 47 E.
Latitude: 45 degrees, 52 minutes, 37.5 seconds N
Longitude: 116 degrees, 53 minutes, 16.1 seconds W
UTM coordinates: zone 11; north 5080179.5 meters, east 508706.9 meters; NAD27
USGS Quadrangle: Jim Creek Butte

RANGE IN CHARACTERISTICS:
Soil Temperature: mesic regime
Mean Annual Soil Temperature: 46 to 51 degrees F
Mean Summer Soil Temperature: 56 to 64 degrees F
Mean Winter Soil Temperature: 35 to 39 degrees F
Soil Moisture: xeric regime; dry 75 to 120 consecutive days in summer

Particle-size Control Section: 10 to 40 inches below mineral soil surface
clay content, average: 8 to 17 percent
rock fragment content, average: 5 to 25 percent

Diagnostic Horizons and Features:
vitrandic subgroup properties: upper boundary at the mineral surface; 18 to 32 inches thick
Al+1/2Fe (ammonium oxalate): 0.1 to 0.4 percent
glass content in the 0.02-2.0mm fraction: 20 to 40 percent
mollic epipedon: 20 to 40 inches thick
lithic contact, depth below mineral soil surface: 40 to 60 inches
base saturation (by sum of cations) more than 75 percent in all horizons between 10 and 30 inches

A1 horizon:
color, moist: 10YR 2/1, 2/2, 3/1
color, dry: 10YR 3/1, 3/2, 3/3
texture: ASHY-SIL, ASHY-SL, ASHY-L
clay content: 8 to 18 percent
gravel content: 0 to 10 percent
reaction: neutral to slightly alkaline; pH: 6.6 to 7.8

A2 horizon:
color, moist: 10YR 2/1, 2/2, 3/2
color, dry: 10YR 3/2, 4/3, 5/3
texture: ASHY-SL, ASHY-SIL , ASHY-L
clay content: 8 to 17 percent
gravel content: 0 to 10 percent
reaction: neutral to slightly alkaline; pH: 6.6 to 7.8

2AB horizon:
color, moist: 10YR 2/1, 3/2, 3/3
color, dry: 10YR 4/2, 4/3, 5/4
texture: SIL, GR-SL, CB-SL, GR-L
clay content: 9 to 17 percent
rock fragment content: 5 to 20 percent total
gravel: 5 to 20 percent
cobbles: 0 to 5 percent
stones: 0 to 5 percent
reaction: neutral to slightly alkaline; pH: 6.6 to 7.8

2BC horizon:
color, moist: 10YR 3/2, 3/3, 4/2, 4/3
color, dry: 10YR 4/2, 4/3, 4/4, 5/4
texture: SIL, GR-SL, GR-L
clay content: 7 to 17 percent
rock fragment content: 10 to 35 percent total
gravel: 10 to 25 percent
cobbles: 0 to 10 percent
stones: 0 to 5 percent
reaction: neutral to slightly alkaline; pH: 6.6 to 7.8

COMPETING SERIES:
Conconully moderately deep (20 to 40 inches) to densic contact (till); mollic epipedon 10 to 14 inches thick
Deno - deep (40 to 60 inches) to lithic contact (basalt); base saturation (by sum of cations) less than 75 percent in one or more horizon between 10 and 30 inches
Doublecreek very deep (lacks a lithic contact within 60 inches); formed in colluvium (basalt)
Fanal very deep (lacks a lithic contact within 60 inches); formed in colluvium (basalt); mollic epipedon 10 to 16 inches thick; moderately well drained with redox concentrations in the lower part of the control section; dry 45 to 60 consecutive days in summer
Phoebe - very deep (lacks a lithic contact within 60 inches) formed in mixed outwash; lower part of particle-size control section is loamy sand or sand; dry 60 to 90 consecutive days in summer
Safety - moderately deep (20 to 40 inches) to a paralithic contact (weathered granite); mollic epipedon 10 to 16 inches thick; dry 75 to 90 consecutive days in summer
Stevens - moderately deep (20 to 40 inches) to a densic contact (mixed till); dry 60 to 90 consecutive days in summer
Uhlig - very deep (lacks a lithic contact within 60 inches); formed in outwash of mixed lithology; 2Bt horizons with clay films; dry 60 to 75 consecutive days in summer

GEOGRAPHIC SETTING:
Landform: backslopes of dissected plateaus with a north aspect
Slope gradient: 50 to 90 percent
Parent material: mixture of Mazama volcanic ash and loess over colluvium
Lithology: granitic
Elevation: 2,000 to 3,500 feet
Climate: cool, moist winters and hot, dry summer
Mean annual precipitation: 10 to 15 inches
Mean annual temperature: 45 to 49 degrees F
Frostfree period: 165 to 200 days

GEOGRAPHICALLY ASSOCIATED SOILS:
Cookcreek: on planar to convex upper slopes; moderately deep to a lithic contact; more than 35 percent rock fragments throughout; under bluebunch wheatgrass, Idaho fescue, silky lupine and arrowleaf balsamroot

DRAINAGE AND PERMEABILITY:
Drainage: well drained
Permeability: moderately rapid

USE AND VEGETATION:
Use: livestock grazing, wildlife habitat, and recreation
Potential natural vegetation: common snowberry, rose, ninebark, service-berry, syringa, silky lupine, mouse-ear, Idaho fescue and bluebunch wheatgrass
Plant associations: SYAL-ROSA (common snowberry/rose); may include: FEID/AGSP-LUSE (Idaho fescue-bluebunch wheatgrass/silky lupine)

DISTRIBUTION AND EXTENT:
Distribution: MLRA 10, Central Rocky and Blue Mountains foothills
Extent: small

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon

SERIES ESTABLISHED: Wallowa-Whitman National Forest, OR 2012.

REMARKS: Diagnostic horizons and features recognized in this pedon are:
mollic epipedon: 0 to 26 inches; A1, A2, 2AB
vitrandic subgroup properties (mixed ash mantle): 0 to 20 inches; A1 and A2
particle-size control section: 10 to 40 inches; A2, 2AB, 2BC

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National Cooperative Soil Survey
U.S.A.