LOCATION WOODENPOLE              OR

Tentative Series
JFD/CEG
02/2025

WOODENPOLE SERIES

Landscape--Pumice mantled plateau
Landform--deflation basins on volcanic fields
Slope--1 to 12 percent
Parent material--coarse pumiceous volcanic ash and pumice parafragments over residuum weathered from volcanic rock
Mean annual precipitation--about 620 mm
Mean annual air temperature--about 5.6 degrees C
Depth class--moderately deep
Drainage class--well drained
Soil moisture regime--xeric
Soil temperature regime--frigid
Soil moisture subclass--typic

TAXONOMIC CLASS: Ashy over clayey, glassy over smectitic, frigid Alfic Humic Vitrixerands

TYPICAL PEDON: Woodenpole paragravelly ashy coarse sandy loam on a forested deflation basin with a slope of 3 percent and an elevation of 1525 m.

Oi--0 to 2 cm; slightly decomposed plant material from pine needles, twigs, and cones; abrupt broken boundary.

Oe--2 to 4 cm; moderately decomposed plant material from pine needles, twigs, and cones; abrupt broken boundary.

A--4 to 20 cm; paragravelly ashy coarse sandy loam, 90 percent grayish brown (10YR 5/2) and 10 percent pinkish gray (7.5YR 6/2) dry, 90 percent dark brown (7.5YR 3/2) and 10 percent brown (7.5YR 4/4) moist; weak fine granular structure; soft, very friable, nonsticky, and nonplastic; many very fine roots; many very fine interstitial pores; 15 percent fine pumice paragravel, 1 percent andesite cobbles, 0.5 percent andesite stones, and 0.1 percent andesite boulders; neutral (pH 6.8); clear smooth boundary.

AB--20 to 38 cm; paragravelly ashy coarse sandy loam, 70 percent grayish brown (10YR 5/2) and 30 percent pinkish gray (7.5YR 6/2) dry, 70 percent very dark grayish brown (10YR 3/2) and 30 percent brown (7.5YR 4/4) moist; weak coarse subangular blocky parting to weak fine granular structure; soft, very friable, nonsticky, and nonplastic; many very fine, common fine, and few coarse roots; many very fine interstitial pores; 15 percent fine pumice paragravel, 1 percent andesite cobbles, 5 percent andesite stones, and 0.1 percent andesite boulders; neutral (pH 6.8); gradual wavy boundary.

Bw1--38 to 44 cm; very cobbly ashy loamy coarse sand, 70 percent light brownish gray (10YR 6/2) and 30 percent pinkish gray (7.5YR 6/2) dry, 70 percent brown (10YR 4/3) and 30 percent brown (7.5YR 5/4) moist; structureless, massive; soft, very friable, nonsticky, and nonplastic; many very fine and common fine roots; many very fine interstitial pores; 20 percent fine pumice paragravel, 1 percent andesite gravel, 35 percent andesite cobbles, 10 percent andesite stones, and 0.1 percent andesite boulders; neutral (pH 7.0); abrupt smooth boundary.

2Bw2--44 to 55 cm; very cobbly ashy sandy loam, pinkish gray (7.5YR 6/2) dry, brown (7.5YR 4/3) moist; weak coarse subangular blocky structure; slightly hard, very friable, slightly sticky, and slightly plastic; few very fine, fine, and medium roots; common very fine dendritic tubular pores; 2 percent fine pumice paragravel, 10 percent andesite gravel, 35 percent andesite cobbles, 10 percent andesite stones, and 0.1 percent andesite boulders; neutral (pH 7.0); abrupt smooth boundary.

2Bt--55 to 70 cm; silty clay, brown (7.5YR 4/2) dry, brown (7.5YR 4/3) moist; strong medium prismatic parting to strong fine angular blocky structure; very hard, firm, moderately sticky, and very plastic; common very fine and few fine and medium roots; common very fine and few fine dendritic tubular pores; 80 percent distinct clay films on faces of peds and on rock fragments; 5 percent medium weakly cemented iron-manganese nodules; 5 percent strongly cemented gravel-sized iron-manganese nodules, 1 percent andesite cobbles; moderately acid (pH 6.0); clear smooth boundary.

2Bqm--70 to 95 cm; cemented material, reddish yellow (7.5YR 7/6) dry, strong brown (7.5YR 5/6) moist; structureless, massive; rigid, very strongly cemented by silica, nonsticky, and nonplastic; 5 percent strongly cemented gravel-sized iron-manganese nodules; moderately acid (pH 6.0).

TYPE LOCATION: Klamath County, Oregon; about 9.0 miles north and 4.5 mile east of the town of Sprague River, OR; about 425 m south and 410 m west of the northeast corner of sec. 33, T.34S., R.11E., Willamette Meridian; Cooks Mountain, Oregon USGS quadrangle; latitude 42.5835300 degrees north, longitude 121.4132000 degrees west, datum WGS84 (coordinates derived from gps unit)
RANGE IN CHARACTERISTICS:

Soil Temperature: frigid regime
Mean annual soil temperature-- 5.5 to 8.0 degrees C
Mean summer soil temperature-- 10.0 to 12.5 degrees C
Mean winter soil temperature-- 1.5 to 4.0 degrees C
Moisture control section--20 to 60 cm; xeric regime; dry for 45 to 60 consecutive days in the moisture control section during the four month period following the summer solstice
Rock fragments--andesite or basalt
Depth to lithologic discontinuity--40 to 80 cm from the mineral soil surface
Depth to duripan--50 to 100 cm from the mineral soil surface
Mollic epipedon--25 to 80 cm thick (can include AB horizons in some pedons)

Particle-size control section
*Clay content--2 to 18 percent in upper part; 35 to 55 percent in lower part
*Pumice rock fragment content--0 to 50 percent in upper part; 0 to 4 percent in lower part
*Abrupt textural change--40 to 80 cm from the mineral soil surface

Estimated andic properties, upper part, above lithologic discontinuity (A, AB and Bw1 horizons):
*Thickness--36 to 80 cm
*Ammonium oxalate extractable Al plus 1/2 Fe--0.2 to 0.4 percent
*Medium to very coarse sand in the .02 to 2.0 mm fraction--greater than 50 percent
*P-retention--25 to 50 percent
*Volcanic glass content--75 to 100 percent glass and glass-coated aggregate
*1/3-bar bulk density--0.75 to 0.90 g/cm3
*1500 kPa water (air-dried samples)--3 to 12 percent

O horizons (where present)
Thickness--0 to 5 cm

A horizon and AB horizons
Hue--7.5YR or 10YR
Value--2 to 4 moist, 4 to 6 dry
Chroma--1 to 4 moist, 2 or 3 dry
Fine-earth texture--ashy coarse sand, ashy loamy coarse sand, ashy coarse sandy loam
Pararock fragments--0 to 25 percent fine pumice paragravel
Total rock fragments--0 to 8 percent
Gravel content--0 to 5 percent
Cobble content--0 to 3 percent
Stone content--0 to 8 percent
Boulder content--0 to 1 percent
Reaction--slightly acid to neutral (pH 6.1 to 7.3)
Thickness--25 to 65 cm

Bw horizons (where present)
Hue--7.5YR or 10YR
Value--3 to 5 moist, 5 to 7 dry
Chroma--2 to 4 moist or dry
Fine-earth texture--ashy coarse sand, ashy loamy coarse sand, ashy coarse sandy loam
Pararock Fragments--0 to 50 percent fine pumice paragravel
Total rock fragments--0 to 45 percent
Gravel content--0 to 10 percent
Cobble content--0 to 40 percent
Stone content--0 to 10 percent
Boulder content--0 to 1 percent
Reaction--slightly acid to neutral (pH 6.1 to 7.3)
Thickness--0 to 45 cm

2Bw horizons (where present)
Value--3 to 5 moist, 4 to 6 dry
Chroma--3 to 6 moist, 2 to 4 dry
Fine-earth texture--ashy sandy loam, sandy loam, loam, clay loam
Pararock Fragments--0 to 4 percent fine pumice paragravel
Total rock fragments--5 to 58 percent
Gravel content--0 to 12 percent
Cobble content--0 to 40 percent
Stone content--0 to 10 percent
Boulder content--0 to 1 percent
Reaction--moderately acid to neutral (pH 5.6 to 7.3)
Thickness--0 to 20 cm

2Bt horizons
Value--3 to 5 moist, 4 or 5 dry
Chroma--2 to 6 moist, 2 to 4 dry
Fine-earth texture--clay loam, silty clay loam, clay, silty clay
Total rock fragments--5 to 30 percent
Gravel content--0 to 30 percent (can include up to 10 percent strongly cemented nodules)
Cobble content--0 to 5 percent
Stone content--0 to 5 percent
Boulder content--0 to 5 percent
Reaction--moderately acid to slightly acid (pH 5.6 to 6.5)
Thickness--10 to 25 cm

2Bqm horizons
Hue--5YR, 7.5YR, 10YR or 2.5Y
Value--3 to 5 moist, 5 to 7 dry
Chroma--2 to 6 moist, 4 to 8 dry

COMPETING SERIES:
Combsflat--over 150 cm to a restrictive layer (very deep); less than 50% medium to very coarse sand in the 0.02 to 2.0 mm fraction; greater than 0.4 percent ammonium oxalate extractable Al plus 1/2 Fe; less than 60 percent glass in the 0.2 to 2.0 mm fraction

GEOGRAPHIC SETTING:
Elevation--1250 to 1800 m
Climate--cold, wet winters and warm, dry summers
Mean annual air temperature-- 4.4 to 6.9 degrees C
Mean annual precipitation--350 to 900 mm, falling mostly as snow
Frost-free period--50 to 70 days

GEOGRAPHICALLY ASSOCIATED SOILS:
Maset--low hills, rock pediments, and dipslopes, on volcanic fields; lithic contact with tuffaceous sandstone between 50 and 100 cm; ashy over loamy-skeletal particle size class
Shukash--volcanic fields; very deep; ashy-over loamy skeletal particle size class; cryic
Bottlespring--deflation basins on lava flows; duripan between 50 and 100 cm below the surface; ash-influenced surface horizons less than 33 cm thick; fine particle size class
Bigtop--drainageways and depressions on lava flows; duripan between 50 and 100 cm below the surface; fine particle size class; seasonally high water table (episaturated) to the surface in April, May, and June (poorly drained)
Shortnap--drainageways on lava flows; duripan between 50 and 100 cm below the surface; ashy over loamy particle size class; cryic; seasonally high water table (episaturated) below 50 cm in May and June (somewhat poorly drained); cryic

DRAINAGE AND PERMEABILITY:
Drainage class--well drained
Saturated hydraulic conductivity (Ksat)--moderately rapid to very rapid in the upper part (above the lithologic discontinuity), moderately slow to moderately rapid in the 2Bw horizon (where present), and slow to moderately slow in the 2Bt horizon

USE AND VEGETATION:
Use--limited timber production, livestock grazing, wildlife habitat
Vegetation--ponderosa pine, western juniper, curlleaf mountain mahogany, antelope bitterbrush, Idaho fescue

DISTRIBUTION AND EXTENT: Cascade Mountains, Eastern Slope, Oregon; MLRA 6; small extent

SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Bozeman, Montana

SERIES PROPOSED: Klamath County Oregon, 2021
Origin of the name--the Wooden Pole Transmission Line (demarcated and labeled on USGS topographic maps), which runs through Klamath County, OR

REMARKS:
Diagnostic horizons and features in this pedon
*Particle-size control section--zone from 4 to 70 cm
*Mollic epipedon--zone from 4 to 38 cm
*Andic soil properties--zone from 4 to 44 cm
*Volcanic glass--zone from 4 to 55 cm
*Abrupt textural change--at 55 cm
*Argillic horizon--zone from 55 to 70 cm
*Duripan--zone from 70 to 95 cm

Andic soil properties--based on data from Bottlespring (KSSL Pedon Number 02N0455), Lapine (KSSL Pedon Numbers 03N0252 and 04N1022), and Spodue (KSSL Pedon Number 16N0294) soils

Pumice and ash are from Mt. Mazama

Nasis Pedon ID 2003OR0351017

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National Cooperative Soil Survey
U.S.A.