LOCATION PAYRAISE ORTentative Series
TAXONOMIC CLASS: Loamy-skeletal, isotic, frigid Andic Haploxeralfs
TYPICAL PEDON: Payraise ashy silt loam -- forested, on a 45 percent northfacing slope at an elevation of 6,080 feet. (Colors are for moist soil unless otherwise noted.)
Oi--0 to 2 inches; needles and twigs
A--2 to 3 inches; dark brown (10YR 3/3) ashy silt loam, brown (10YR 5/3) dry; weak fine granular structure; soft, very friable, nonsticky and nonplastic; many very fine and fine and few medium roots; common fine irregular pores; 5 percent gravel; slightly acid (pH 6.1); clear smooth boundary. (1 to 7 inches thick)
Bw--3 to 10 inches; yellowish brown (10YR 5/4) gravelly ashy silt loam, very pale brown (10YR 7/3) dry; weak fine and very fine subangular blocky structure; soft, very friable, nonsticky and nonplastic; many very fine, fine and many medium, and common coarse roots; common fine irregular pores; 15 percent gravel; neutral (pH 7.0); clear wavy boundary. (6 to 9 inches thick)
2Eb--10 to 16 inches; brown (10YR 5/3) cobbly sandy loam, light gray (10YR 7/2) dry; weak fine and very fine subangular blocky structure; soft, very friable, slightly sticky and nonplastic; common fine, very fine, medium and coarse roots; common fine irregular pores; 15 percent gravel, 10 percent cobbles, and 5 percent stones; slightly acid (pH 6.5); clear smooth boundary. (4 to 13 inches thick)
2EBb--16 to 34 inches; light yellowish brown (2.5Y 6/4) very cobbly sandy loam, pale yellow (2.5Y 8/3) dry; weak fine and very fine subangular blocky structure; soft, friable, slightly sticky and slightly plastic; common fine and few medium roots; few fine irregular pores; 20 percent gravel, 10 percent cobbles, 5 percent stones; neutral (pH 7.0); gradual smooth boundary. (0 to 18 inches thick)
2Btb--34 to 50 inches; olive yellow (2.5Y 6/6) very stony sandy clay loam, yellow (2.5Y 7/6) dry; weak medium subangular blocky structure parting to weak fine and very fine subangular blocky; soft, friable, slightly sticky and slightly plastic; many faint and few distinct clay films on ped faces; few fine and medium roots; few fine tubular pores; 20 percent gravel, 10 percent cobbles, and 10 percent stones; slightly acid (pH 6.5); gradual smooth boundary. (13 to 21 inches thick)
2BCb--50 to 61 inches; olive yellow (2.5Y 6/6) very stony sandy loam, pale yellow (2.5Y 7/4) dry; weak fine and very fine subangular blocky structure; soft, friable, slightly sticky and nonplastic; few faint clay films on ped faces; few fine roots; 20 percent gravel, 10 percent cobbles, and 10 percent stones; neutral (pH 7.0).
TYPE LOCATION: Baker County, Oregon
Section 1 (SE 1/4, NE 1/4, SW 1/4) T. 15 S., R. 36 E.
Latitude: 44 degrees, 17 minutes, 30 seconds North
Longitude: 118 degrees, 14 minutes, 35 seconds West
UTM coordinates: zone 11; 4,904,803 northing; 400,826 easting; NAD27
USGS Quadrangle: Rastus Mountain
RANGE IN CHARACTERISTICS:
Soil Temperature: frigid regime
Mean Annual Soil Temperature: 39 to 45 degrees F
Mean Summer Soil Temperature: 47 to 54 degrees F
Mean Winter Soil Temperature: 32 to 37 degrees F
Soil Moisture: xeric regime; dry 45 to 60 consecutive days in summer
Particle-size Control Section: upper 20 inches of argillic horizon
Clay content, average: 18 to 35 percent
Rock fragment content, average: 35 to 75 percent
Diagnostic Horizons and Features:
andic soil properties: upper boundary at the mineral surface; 7 to 13 inches thick
Al+1/2Fe (ammonium oxalate): 1.0 to 2.4 percent
bulk density: 0.65 to 1.00 g/cc
P retention: 60 to 90 percent
0.02-2.0 mm fraction: 40 to 60 percent of fine earth
glass content in the 0.02-2.0 mm fraction: 55 to 85 percent
water content at 1500 kPa (air dried): 5 to 12 percent
cambic horizon: 6 to 9 inches thick
argillic horizon: 16 to 41 inches thick
A horizon:
color, moist: 10YR 3/3
color, dry: 10YR 5/3, 6/3, 6/4
texture: ASHY-SIL
clay content: 5 to 7 percent
rock fragment content: 5 to 15 percent gravel
reaction: slightly acid ; pH: 6.1 to 6.5
Bw horizon:
color, moist: 10YR 4/3, 4/4, 5/4
color, dry: 10YR 6/3, 6/4, 7/3, 7/4
texture: GR-ASHY-SIL, ASHY-SIL
clay content: 4 to 8 percent
rock fragment content: 10 to 25 percent gravel
reaction: slightly acid to neutral; pH: 6.1 to 7.3
2Eb horizon; may include 2EBb horizon in some pedons
color, moist: 10YR 4/2, 5/2, 5/3, 5/4, 6/4; 2.5Y 6/4
color, dry: 10YR 6/2, 7/2, 7/3; 2.5Y 8/3
texture: GR-SL, GRV-L, GRV-LS, CBV-SL, CB-SL
clay content: 7 to 12 percent
rock fragment content: 25 to 55 percent
gravel: 15 to 45 percent
cobbles: 0 to 15 percent
stones: 0 to 5 percent
reaction: slightly acid to neutral; pH: 6.1 to 7.3
2Btb horizon:
color, moist: 7.5YR 5/4; 10YR 5/4, 6/4, 6/6; 2.5Y 5/4, 6/6
color, dry: 10YR 6/3, 6/4, 7/4; 2.5Y 6/3, 6/4, 7/6
texture: GRV-L, CBV-SCL, STV-SCL, GRV-SCL
clay content: 18 to 27 percent
rock fragment content: 35 to 55 percent
gravel: 20 to 55 percent
cobbles: 0 to 15 percent
stones: 0 to 10 percent
reaction: slightly acid to neutral; pH: 6.1 to 7.3
2BCb horizon:
color, moist: 10YR 5/6, 5/8, 6/3, 6/4; 2.5Y 6/6
color, dry: 10YR 7/4, 7/6; 2.5Y 6/4, 7/2, 7/4
texture: GRX-SL, GRX-L, GRV-L, GRV-SL, STV-SL
clay content: 7 to 18 percent
rock fragment content: 35 to 75 percent
gravel: 20 to 65 percent
cobbles: 0 to 10 percent
stones: 0 to 10 percent
reaction: slightly acid to neutral; pH: 6.1 to 7.3
COMPETING SERIES:
Baileycreek: moderately deep (20 to 40 inches) to a paralithic contact, soft weathered basalt; dry 90 consecutive days in summer
Goshawk: moderately deep (20 to 40 inches) to a lithic contact, andesite; dry 60 to 75 consecutive days in summer
Jorge: deep and very deep to paralithic contact, weathered vesicular andesitic agglomerate
McDanielake: very deep; formed in colluvium from basalt or andesite with a mantle of volcanic ash; dry 60 to 90 consecutive days in summer
Nebopeak: very deep; formed in a thin, undisturbed mantle of volcanic ash over till from basalt; rock fragments are subrounded to rounded in shape
Pinuscreek: deep (40 to 60 inches) to a lithic contact; formed in a thin, undisturbed mantle of volcanic ash over colluvium and residuum from basalt or andesite
Ranes: very deep; formed in a thin volcanic ash mantle over alluvium from mafic igneous rocks; ash mantle has glass content of 40 to 65 percent; dry 60 to 75 consecutive days in summer
Satus: very deep; formed in residuum and colluvium from basalt with a thin mantle of volcanic ash; ash mantle has glass content of 15 to 30 percent; dry 60 to 75 consecutive days in summer
Weste: moderately deep (20 to 40 inches) to a lithic contact, basalt; dry 90 consecutive days in summer
Whitedeer: moderately deep (20 to 40 inches) to a paralithic contact, weathered basalt
GEOGRAPHIC SETTING:
Landform: backslopes of mountains
Slope gradient: 0 to 90 percent
Parent material: volcanic ash overlying colluvium
Lithology: argillite and other metasedimentary or metavolcanic rocks
Elevation: 4,000 to 6,000 feet
Climate: cold, wet winters and warm, dry summers
Mean annual precipitation: 15 to 30 inches
Mean annual air temperature: 37 to 43 degrees F
Frostfree period: 30 to 80 days
GEOGRAPHICALLY ASSOCIATED SOILS:
Dunstan: on eroding backslopes; deep to andesitic tuff breccia with a mantle of mixed volcanic ash and colluvium, over clayey-skeletal argillic horizon; under grand fir, lodgepole pine, grouse huckleberry, pinegrass and elk sedge
Hondu: on concave backslopes and footslopes, very deep soil with a thin volcanic ash mantle over loamy-skeletal colluvium and residuum from argillite; under grand fir, Douglas-fir, curlleaf mountain mahogany, heartleaf arnica, pinegrass and elk sedge
Kettlecreek: on backslopes; deep to argillite bedrock; loamy-skeletal colluvium with a minor amount of volcanic ash in surface horizons; under Douglas-fir, ponderosa pine, birchleaf spiraea and common snowberry
Lemoncreek: on eroding backslopes; moderately deep to metavolcanic bedrock with mixed mantle of ash and colluvium over loamy-skeletal colluvium; under grand fir forest with pinegrass or elk sedge in the understory
Pinuscreek: on planar to concave backslopes, deep to basalt bedrock; thin undisturbed ash mantle over loamy-skeletal argillic horizons; grand fir, Douglas-fir, western larch, lodgepole pine, grouse whortleberry, pinegrass and
Ross sedge
Slaughterhouse: on backslopes and summits, deep to bedrock with a thick volcanic ash mantle, an argillic horizon and 18 to 27 percent clay in the particle-size control section under grand fir forest
Vogel: on convex shoulders and backslopes; shallow to argillite bedrock with small amount of volcanic ash mixed in loamy-skeletal colluvium; under open ponderosa pine and Douglas-fir forest
DRAINAGE AND PERMEABILITY:
Drainage: well drained
Permeability: moderately slow
USE AND VEGETATION: Payraise soils are used for watershed, wildlife habitat, timber production, livestock grazing and recreation.
Native vegetation: grand fir, Douglas-fir, lodgepole pine, ponderosa pine, western larch, birchleaf spiraea, common prince's pine, Oregon grape, Oregon boxwood, heartleaf arnica, white flowered hawkweed, showy aster, woods strawberry, pinegrass, elk sedge and northwest sedge
Plant Associations: ABGR/CARU (grand fir/pinegrass); ABGR/SPBE (grand fir/birchleaf spiraea) may be present.
DISTRIBUTION AND EXTENT:
Distribution: MLRA 43c; Blue Mountains of northeastern Oregon
Extent: small
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon
SERIES PROPOSED: Wallowa-Whitman National Forest, 2008. The name is from a mine near Unity.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
ochric epipedon: 2 to 3 inches; A horizon
cambic horizon: 3 to 10 inches; Bw horizon
eluvial layer: 10 to 34 inches; 2Eb, 2EBb horizons
argillic horizon: 34 to 61 inches; 2Btb, 2BCb horizon
andic subgroup properties (ash mantle): 2 to 10 inches; A, Bw horizons
particle-size control section: 34 to 54 inches; 2Btb, 2BCb horizons
ADDITIONAL DATA: National Soil Survey Laboratory; pedon ID: 92OR063006