LOCATION GOLFER ORTentative Series
TAXONOMIC CLASS: Loamy-skeletal, isotic, frigid Vitrandic Haploxerolls
TYPICAL PEDON: Golfer ashy sandy loam - forested, on a 60 percent south-facing slope at an elevation of 3,960 feet. (Colors are for moist soil unless otherwise noted. Soil textures are apparent field textures.)
Oi--0 to 1 inch; mosses and slightly decomposed pine and fir needles, and grass litter
A--1 to 5 inches; very dark brown (10YR 2/2) ashy sandy loam, dark grayish brown (10YR 4/2) dry; weak very fine subangular blocky structure; soft, very friable, nonsticky and nonplastic; many very fine and few fine roots throughout; many fine irregular; 5 percent gravel; slightly acid (pH 6.5); clear, smooth boundary. (2 to 9 inches thick)
AB--5 to 12 inches; very dark grayish brown (10YR 3/2) ashy sandy loam, brown (10YR 5/3) dry; weak and moderate subangular blocky structure; slightly hard, friable, nonsticky and nonplastic; common fine and many medium roots throughout; few medium and fine interstitial pores; 5 percent gravel; slightly acid (pH 6.1); clear, smooth boundary. (6 to 13 inches thick)
Bw--12 to 20 inches; dark brown (10YR 3/3) gravelly sandy loam, pale brown (10YR 6/3) dry; weak fine and medium subangular blocky structure; slightly hard, very friable, nonsticky and nonplastic; common fine, few medium and many coarse roots throughout; few fine irregular pores; 20 percent gravel and 5 percent cobbles; neutral (pH 7.3); gradual, smooth boundary. (5 to 19 inches thick)
BC--20 to 30 inches; dark grayish olive (10Y 4/2) very gravelly sandy loam, light grayish olive (10Y 6/2) dry; weak fine and medium subangular blocky structure; slightly hard, very friable, nonsticky and nonplastic; few very fine and medium roots throughout; 50 percent gravel and 5 percent cobbles; neutral (pH 7.3). (4 to 10 inches thick)
Cr--30 to 41 inches, weathered granite (grus). (6 to 17 inches thick)
R--41 inches; granite bedrock
TYPE LOCATION: Grant County, Oregon
Section 3 (SW , SE , SE ), T. 7 S., R. 33 E.
Latitude: 44 degrees, 59 minutes, 06 seconds N.
Longitude: 118 degrees, 43 minutes, 01 seconds W.
UTM coordinates: zone 11; north 4,982,510 meters; east 364,510 meters; NAD27
USGS Quadrangle: Kelsay Butte
RANGE IN CHARACTERISTICS:
Soil Temperature: frigid regime
Mean Annual Soil Temperature: 42 to 46 degrees F
Mean Summer Soil Temperature: 49 to 54 degrees F
Mean Winter Soil Temperature: 30 to 35 degrees F
Soil Moisture: xeric regime, dry 60 to 75 consecutive days in summer
Particle-size Control Section: from 10 inches below mineral soil surface to a paralithic contact
clay content, average: 4 to 14 percent
rock fragment content, average: 35 to 55 percent
Diagnostic Horizons and Features:
vitrandic subgroup properties: upper boundary at the mineral surface; 11 to 19 inches thick
Al+1/2Fe (ammonium oxalate): 0.2 to 1.0 percent
P retention: 20 to 40 percent
glass count in the 0.02-2.0mm fraction: 5 to 15 percent
mollic epipedon: 7 to 18 inches thick
cambic horizon: 9 to 23 inches thick
ultic subgroup feature: base saturation 40 to 65 percent in Bw horizon
paralithic contact, depth from mineral soil surface: 20 to 40 inches
A horizon:
color, moist: 7.5YR 2/2; 10YR 2/2
color, dry: 7.5YR 4/2; 10YR 4/2
texture: ASHY-SL, GR-ASHY-SL, CB-ASHY-SL, GR-ASHY-L
clay content: 4 to 12 percent
rock fragment content: 5 to 35 percent
gravel: 5 to 30 percent
cobbles: 0 to 10 percent
stones: 0 to 5 percent
reaction: slightly acid to neutral; pH: 6.1 to 7.3
AB horizon:
color, moist: 10YR 3/2, 3/3
color, dry: 10YR 4/2, 5/3
texture: ASHY-SL, GR-ASHY-SL, CB-ASHY-SL, GR-ASHY-L
clay content: 4 to 12 percent
rock fragment content: 5 to 35 percent
gravel: 5 to 30 percent
cobbles: 0 to 10 percent
stones: 0 to 5 percent
reaction: moderately acid to neutral; pH: 5.6 to 7.3
Bw horizon:
color, moist: 7.5YR 3/4, 4/4, 5/4; 10YR 3/2, 3/3, 4/2, 4/3, 4/4
color, dry: 7.5RY 5/4, 5/6, 6/6; 10YR 6/2, 6/3
texture: GRV-SL, GR-SL, GRV-L, CBV-SL
clay content: 4 to 16 percent
rock fragment content: 20 to 45 percent
gravel: 20 to 40 percent
cobbles: 5 to 10 percent
stones: 0 to 5 percent
reaction: slightly acid to neutral; pH: 6.1 to 7.3
base saturation (sum of bases): 40 to 65 percent
BC horizon:
color, moist: 7.5YR 4/4, 5/4; 10YR 4/2
color, dry: 7.5YR 5/6; 10YR 6/2
texture: GRV-SL, GRX-SL, CBX-L, CBX-LS
clay content: 2 to 10 percent
rock fragment content: 55 to 85 percent
gravel: 45 to 65 percent
cobbles: 5 to 25 percent
stones: 0 to 10 percent
reaction: slightly acid to neutral; pH: 6.1 to 7.3
COMPETING SERIES:
Bearspring: very deep (>60 inches) in granitic colluvium
Bigelk: very deep (>60 inches) in mixed till; mixed ash mantle, 7 to 14 inches thick (35 to 50 percent glass content) with discontinuity between mantle and buried cambic horizon; dry 45 to 60 consecutive days in summer
Cassal: deep (40 to 60 inches) to densic contact (till); volcanic ash influenced layer (glass content 5 to 20 percent), 12 to 18 inches thick, with discontinuity between ashy layer and till substratum; distinct redoximorphic features at 30 to 45 inches
Cherrycreek: deep (40 to 60 inches) to a lithic contact (basalt); does not have an organic (O) horizon above surface of mineral soil (not forested); mixed mantle of volcanic ash and loess (glass content 15 to 30 percent), 35 to 50 inches thick; mollic epipedon is 20 to 35 inches thick
Deck: moderately deep (20 to 40 inches) to a lithic contact (metavolcanic rock); mixed volcanic ash mantle (glass content 30 to 55 percent) with discontinuity between mantle and buried cambic horizon; particle-size control section averages 20 to 34 percent clay
Eastpine: moderately deep (20 to 40 inches) to a lithic contact (metasedimentary rock); dry 45 to 60 consecutive days in summer
Egyptcreek: moderately deep (20 to 40 inches) to a lithic contact (welded tuff); dry 75 to 90 consecutive days in summer
Fredonyer: moderately deep (20 to 40 inches) to lithic contact (andesite or basalt); does not have organic horizon above surface of mineral soil (not forested); mollic epipedon is 20 to 40 inches thick; dry more than 90 consecutive days in summer
Grubcreek: moderately deep (20 to 40 inches) to a lithic contact (andesite, andesitic basalt or basalt); particle-size control section averages 18 to 33 percent clay
Kettlecreek: deep (40 to 60 inches) to a lithic contact (argillite);
Longs: deep (40 to 60 inches) to a lithic contact (basalt); mollic epipedon is 20 to 45 inches thick; subsoil has faint clay films on ped faces; particle-size control section averages 18 to 27 percent clay; dry 45 to 75 consecutive days in summer
Midpeak: moderately deep (20 to 40 inches) to a lithic contact (breccia); mixed volcanic ash mantle (glass content 5 to 20 percent) with discontinuity between mantle and buried cambic horizon
Mineral: moderately deep (20 to 40 inches) to a lithic contact (granitic rocks)
Peahke: moderately deep (20 to 40 inches) to a paralithic contact; volcanic ash mantle (glass content 20 to 30 percent), 7 to 14 inches thick; particle-size control section averages 18 to 30 percent clay, and has 60 to 70 percent channers; dry 45 to 60 consecutive days in summer
Piersonte: very deep (>60 inches) in colluvium from shale; mollic epipedon is 20 to 35 inches thick; particle-size control section averages 18 to 30 percent clay, rock fragments are mostly shale channers; dry 60 to 90 consecutive days in summer
Porch: moderately deep (20 to 40 inches) to lithic contact (argillite)
Scoap: very deep (>60 inches) in till or outwash of mixed lithology; mollic epipedon is 20 to 30 inches thick
Shalrock: moderately deep (20 to 40 inches) to a lithic contact (sandstone); mixed volcanic ash mantle (glass content 5 to 15 percent); with discontinuity between mantle and substratum; particle-size control section averages 5 to 12 percent clay, and has 25 to 50 percent medium and coarse sand
Shilling: very deep (greater than 60 inches) in colluvium from basalt; particle-size control section averages 18 to 27 percent clay; dry 45 to 75 consecutive days in summer
Umatilla: very deep (> 60 inches) in colluvium from basalt; mollic epipedon is 20 to 30 inches thick (mollic colors throughout); discontinuity between ashy layer and subsoil horizons; particle-size control section averages 25 to 35 percent clay
Webbgulch: moderately deep (20 to 40 inches) to a lithic contact (andesitic basalt or basalt)
Yellcreek: very deep (>60 inches) in mixed colluvium; minor volcanic ash influence (glass content 5 to 20 percent) with discontinuity between volcanic ash influence zone and substratum
GEOGRAPHIC SETTING:
Landform: mountain sideslopes
Slope gradient: 30 to 90 percent
Parent material: minor amount of volcanic ash mixed with loess and colluvium overlying residuum
Lithology: granite
Elevation: 4,000 to 6,800 feet
Climate: cold, wet winters and warm, dry summers
Mean annual precipitation: 26 to 41 inches
Mean annual air temperature: 35 to 43 degrees F
Frost-free period: 45 to 95 days
GEOGRAPHICALLY ASSOCIATED SOILS:
Coyotebluff: on steep backslopes; deep, mollic epipedon, ashy-skeletal mixed ash mantle over buried loamy-skeletal material; under grand fir, western larch, Rocky Mountain maple, mallow ninebark, pinegrass and mountain brome
Forshey: on planer to concave backslopes; very deep with a mixed ash mantle and argillic horizon under Douglas-fir and ponderosa pine with common snowberry, birchleaf spiraea and elk sedge
Piutespring: on steep backslopes; moderately deep to lithic contact; thin volcanic ash mantle; under grand fir, Douglas-fir, ponderosa pine, birchleaf spiraea, pinegrass and elk sedge
Powderriver: on convex upper backslopes and shoulders; shallow, skeletal soil under open canopy of Douglas-fir or grand fir with pinegrass, Rocky Mountain maple and elk sedge
Sixdollar: on north slopes; deep soil with mollic epipedon and thick volcanic ash mantle; under Douglas-fir, ponderosa pine and grand fir forest with birchleaf spiraea, common snowberry and pinegrass
Spartabutte: on backslopes, moderately deep; mollic epipedon, argillic horizon and a minor influence of volcanic ash, under Douglas-fir, ponderosa pine and grand fir with common snowberry, birchleaf spiraea, mountain snowberry, elk sedge and pinegrass
DRAINAGE AND PERMEABILITY:
Drainage: well drained
Permeability: moderately rapid
USE AND VEGETATION:
Use: timber production, watershed, wildlife habitat, recreation, livestock grazing
Native vegetation: Douglas-fir, grand fir, ponderosa pine, common snowberry, baldhip rose, mallow ninebark, snowbrush ceanothus, birchleaf spiraea, low Oregongrape, spreading dogbane, wormleaf stonecrop, bracken fern, arrowleaf balsamroot, broadpetal strawberry, pinegrass, elk sedge, spurred lupine, mountain brome, western fescue, Idaho fescue
Plant Association: PSME/CARU (Douglas-fir/pinegrass); may include PSME/PHMA (Douglas-fir/mallow ninebark), PIPO/CARU (ponderosa pine/pinegrass) or PIPO/CAGE (ponderosa pine/elk sedge)
DISTRIBUTION AND EXTENT:
Distribution: MLRA 43c; Blue Mountains in northeastern Oregon
Extent: small
MLRA OFFICE RESPONSIBLE: Portland, Oregon
SERIES PROPOSED: Umatilla National Forest, Oregon 2008 The name is coined
REMARKS: Diagnostic horizons and features recognized in this pedon are:
mollic epipedon: 1 to 12 inches; A, AB horizons
cambic horizon: 12 to 20 inches; Bw horizon
vitrandic subgroup properties: 1 to 12 inches; A, AB horizons
particle-size control section: 11 to 30 inches; AB, Bw, BC horizons