LOCATION UFISH ORTentative Series
TAXONOMIC CLASS: Ashy over loamy-skeletal, amorphic over isotic Typic Vitricryands
TYPICAL PEDON: Ufish ashy sandy loam woodland, on a 35 percent south-facing slope at an elevation of 6,560 feet. (Colors are for moist soil unless otherwise noted.)
Oi--0 to 1 inches; needles and twigs.
A--1 to 6 inches; dark brown (10YR 3/3) ashy sandy loam, yellowish brown (10YR 5/4) dry; weak fine granular structure; soft, very friable, nonsticky, nonplastic and weakly smeary; many fine and few medium and coarse roots; common fine and medium irregular pores; 10 percent gravel; slightly acid (pH 6.2); gradual smooth boundary. (4 to 7 inches thick)
Bw--6 to 19 inches; dark yellowish brown (10YR 3/4) stony ashy silt loam, yellowish brown (10YR 5/4) dry; weak fine and medium subangular blocky structure; soft, very friable, nonsticky, nonplastic and weakly smeary; common fine and few medium and coarse roots; few fine tubular pores; 5 percent gravel and 15 percent stones; moderately acid (pH 6.0); clear smooth boundary. (8 to 15 inches thick)
2Bwb--19 to 39 inches; brown (10YR 5/3) very stony sandy loam, light yellowish brown (10YR 6/4) dry; weak medium subangular blocky structure; soft, firm, nonsticky and nonplastic; few fine and medium roots; few fine tubular pores; 20 percent gravel, 5 percent cobbles and 25 percent stones; moderately acid (pH 5.8); clear smooth to irregular boundary. (7 to 26 inches thick)
2BCb--39 to 49 inches; brown (10YR 5/3) extremely stony sandy loam, light yellowish brown (10YR 6/4) dry; single grain; loose, friable, nonsticky and nonplastic; few fine roots; 25 percent gravel, 15 percent cobbles and 35 percent stones; strongly acid (pH 5.5). (0 to 32 inches thick)
2R--49 inches; granodiorite bedrock.
TYPE LOCATION: Union County, Oregon
Section 30 (NW 1/4, NW 1/4, NE 1/4), T. 6 S., R. 37 E.
Latitude: 45 degrees, 01 minutes, 8 seconds N
Longitude: 118 degrees, 13 minutes, 31 seconds W
USGS quadrangle: Anthony Butte
RANGE IN CHARACTERISTICS:
Soil Temperature: cryic regime
Mean Annual Soil Temperature: 35 to 41 degrees F
Mean Summer Soil Temperature: 41 to 48 degrees F
Mean Winter Soil Temperature: 28 to 36 degrees F
Soil Moisture: udic regime; dry 20 to 35 days in summer
Particle-size Control Section: mineral soil surface to 40 inches below the mineral surface
Upper part (ashy): 15 to 18 inches thick
Clay content: 4 to 9 percent
Rock fragment content: 5 to 25 percent
Lower Part (loamy-skeletal): 22 to 25 inches thick
Clay content: 2 to 15 percent
Sand content: more than 25 percent very coarse, coarse and medium sand
Rock fragment content: 35 to 60 percent
Rock fragment shape: subangular to subrounded
Diagnostic Horizons and Features:
andic soil material: upper boundary at the mineral soil surface; 15 to 18 inches thick
Al+1/2Fe(aox): 1.5 to 3.0 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: 60 to 90 percent
water content at 1500 kPa tension (air dry soil): 5 to 12 percent
8Si + 2Fe (aox): 4 to 8 percent
8Si - 2Fe (aox): 5 to 12 percent
ochric epipedon: 4 to 7 inches thick
cambic horizon, upper: 8 to 15 inches thick
lower: 7 to 26 inches thick
lithic contact depth: 40 to 60 inches below the mineral soil surface
Major Horizons:
A horizon
color, moist: 10YR 2/2, 3/3, 3/4, 4/4
color, dry: 10YR 5/3, 5/4, 6/4
texture: ASHY-SIL, ASHY-SL
clay content: 5 to 8 percent
rock fragment content: 5 to 14 percent
gravel: 5 to 10 percent
cobbles: 0 to 5 percent
stones: 0 to 5 percent
reaction: moderately acid to slightly acid; pH: 5.6 to 6.5
base saturation (sum of bases): 5 to 25 percent
organic matter: 2 to 10 percent
Bw horizon
color, moist: 10YR 3/4, 4/3, 4/4, 5/6, 6/4
color, dry: 10YR 5/4, 6/4, 7/4, 8/3
texture: ASHY-SIL, GR-ASHY-SIL, ST-ASHY-SIL
clay content: 3 to 8 percent
rock fragment content: 5 to 25 percent
gravel: 5 to 10 percent
cobbles: 0 to 10 percent
stones: 0 to 15 percent
reaction: moderately acid to slightly acid; pH: 5.6 to 6.0
base saturation (sum of bases): 2 to 10 percent
organic matter: 1 3 percent
2Bwb horizon
color, moist: 10YR 4/4, 5/3
color, dry: 10YR 6/4, 7/2, 7/3
texture: STV-SL, CBV-COSL, CBV-SL, GRV-SL
clay content: 3 to 10 percent
rock fragment content: 35 to 55 percent
gravel: 10 to 30 percent
cobbles: 5 to 25 percent
stones: 0 to 25 percent
reaction: strongly acid to moderately acid; pH: 5.1 to 6.0
base saturation (sum of bases): 40 to 60 percent
2BC horizon (2C horizon in some pedons)
color, moist: 10YR 5/3, 5/4, 6/3
color, dry: 10YR 6/3, 6/4, 7/2, 8/3
texture: STV-SL, STX-SL, GRV-SL, GRV-LCOS
clay content: 3 to 7 percent
rock fragment content: 35 to 65 percent
gravel: 20 to 45 percent
cobbles: 0 to 15 percent
stones: 0 to 35 percent
reaction: strongly acid to slightly acid; pH: 5.1 to 6.5
base saturation (sum of bases): 50 to 70 percent
COMPETING SERIES:
Ufish (T)-deep (40 to 60 inches) to a lithic contact, loamy-skeletal part of pscs is strongly acid to slightly acid, and has 35 to 60 percent subrounded or subangular rock fragments and more than 25 percent very coarse, coarse and medium sand, formed in volcanic ash over colluvium from granite and granodiorite
Angelpeak-deep (40 to 60 inches) to a lithic contact, loamy-skeletal part of pscs is slightly acid or neutral and has 60 to 85 percent angular rock fragments, formed in volcanic ash over colluvium from argillite
Ashnola (T)-moderately deep and deep (35 to 50 inches) to a densic contact, very deep (>60 inches) to bedrock, ashy part of the pscs is gravelly ashy sandy loam and less than 50 percent silt, formed in volcanic ash over till from sedimentary and volcanic rocks
Bucketlake-very deep (>60 inches), loamy-skeletal part of the pscs has subrounded and rounded rock fragments and clay content of 5 to 15 percent, formed in volcanic ash over till from granite
Ducklake (T)-deep (40 to 60 inches) to a densic contact, very deep (>60 inches) to bedrock, ashy part of the pscs is stony ashy silt loam with more than 50 percent silt, loamy-skeletal part of pscs has rounded or well rounded rock fragments, formed in volcanic ash over till from granite
Lackeyshole (T)-deep (40 to 60 inches) to a lithic contact, loamy-skeletal part of pscs is slightly acid or neutral and has 35 to 55 percent subangular rock fragments and less than 25 percent very coarse, coarse and medium sand, formed in volcanic ash over colluvium from andesitic basalt and basalt
McCalpinemeadow (T)-moderately deep (20 to 40 inches) to a lithic contact; loamy-skeletal part of the pscs has subangular rock fragments, more than 25 percent very coarse, coarse and medium sand, and clay content of 5 to 10 percent; formed in volcanic ash over colluvium from granite and granodiorite
Mountemily-very deep (>60 inches), loamy-skeletal part of the pscs has subangular and angular rock fragments and clay content of 18 to 30 percent, formed in volcanic ash over colluvium from basalt
Mudlakebasin (T)-moderately deep (20 to 40 inches) to a lithic contact, loamy-skeletal part of the pscs has well rounded and rounded rock fragments, and clay content of 4 to 18 percent, formed in volcanic ash over till from granite
Towermountain (T)-moderately deep (20 to 40 inches) to a paralithic contact, formed in volcanic ash over colluvium from rhyolitic tuff
Troutmeadows -moderately deep (20 to 40 inches) to a lithic contact, loamy-skeletal part of the pscs has subangular rock fragments, less than 25 percent very coarse, coarse and medium sand, and clay content of 10 to 18 percent, formed in volcanic ash over colluvium from basalt
GEOGRAPHIC SETTING:
Landform: backslopes of mountains
Slope gradient: 30 to 60 percent
Parent material: volcanic ash overlying colluvium and residuum derived from granitic rocks
Lithology: granite and granodiorite
Elevation: 5,400 to 7,200 feet
Climate: cold, wet winters and cool, moist summers
Mean annual precipitation: 30 to 50 inches
Mean annual air temperature: 33 to 39 degrees F
Frost-free period: 20 to 65 days.
GEOGRAPHICALLY ASSOCIATED SOILS:
McCalpinemeadow (T)-occurs on planar to convex, mid to upper slopes and ridges; 20 to 40 inches to lithic contact
Prouty-occurs on planar to convex, mid to upper slopes and ridges at higher elevations; has less than 14 inches of ash influence
Tannergulch (T)-occurs on convex mid to upper slopes of higher elevations and near rock outcrops; associated with openings in the canopy, 10 to 20 inches to a lithic contact
DRAINAGE AND PERMEABILITY:
Drainage: well drained
Permeability: moderately rapid
USE AND VEGETATION:
Use: watershed, wildlife habitat, timber production, livestock grazing and recreation
Native vegetation: subalpine fir, lodgepole pine, western larch, Engleman spruce, Douglas fir, grand fir, grouse whortleberry, prince's pine, Scouler's willow, twinflower, common snowberry, woods strawberry, blueleaf strawberry, sidebells pyrola, pinegrass and northwestern sedge
Ecological site: dominant plant association is ABLA/VASC; may include ABLA/LIBOL2, PICO(ABLA)/VASC
DISTRIBUTION AND EXTENT:
MLRA- E43
Distribution- Blue Mountains of northeastern Oregon
Extent- small
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon
SERIES PROPOSED: Union County, Oregon 2003. The name is coined.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
ochric epipedon: 1 to 6 inches A
cambic horizon: 6 to 39 inches Bw, 2Bwb
andic soil properties: 1 to 19 inches A, Bw
particle-size control section: 1 to 41 inches A, Bw, 2Bwb, 2BCb
ashy part: 1 to 19 inches A, Bw
loamy-skeletal part: 19 to 41 inches 2Bwb, 2BCb
lithic contact 49 inches 2R