LOCATION PATTENBUTTE OR
Tentative Series
IRD. RAW/DAL
09/2011
PATTENBUTTE SERIES
The Pattenbutte series consists of shallow, well drained soils on backslopes and shoulder slopes of mountains. Pattenbutte soils formed in colluvium from granite with a minor influence of volcanic ash. Slopes are 0 to 90 percent. Mean annual precipitation is about 48 inches and mean annual air temperature about 33 degrees F.
TAXONOMIC CLASS: Sandy-skeletal, isotic Lithic Humicryepts
TYPICAL PEDON: Pattenbutte very stony ashy sandy loam - rangeland, on a 60 percent north-facing slope at an elevation of 7,260 feet. (Colors are for moist soil unless otherwise indicated.)
A--0 to 8 inches; very dark brown (10YR 2/2) very stony ashy sandy loam, brown (7.5YR 4/3) dry; weak fine granular structure; loose, very friable, nonsticky and nonplastic; many very fine and fine roots throughout; common very fine irregular pores; 30 percent gravel, 10 percent cobbles and 10 percent stones; moderately acid (pH 6.0); clear wavy boundary. (7 to 10 inches thick)
Bw1--8 to 12 inches; dark yellowish brown (10YR 3/4) very stony loamy sand, dark yellowish brown (10YR 4/4) dry; weak very fine subangular blocky structure; loose, very friable, nonsticky and nonplastic; many very fine and fine roots throughout; many very fine irregular pores; 35 percent gravel, 10 percent cobbles and 10 percent stones; moderately acid (pH 6.0); clear wavy boundary. (4 to 9 inches thick)
Bw2--12 to 16 inches; dark yellowish brown (10YR 3/4) extremely stony loamy sand, dark yellowish brown (10YR 4/4) dry; weak fine subangular blocky structure; loose, very friable, nonsticky and nonplastic; common very fine roots throughout; many very fine irregular pores; 45 percent gravel, 15 percent cobbles and 15 percent stones; moderately acid (pH 6.0); abrupt irregular boundary. (3 to 4 inches thick)
R--16 inches; granitic bedrock
TYPE LOCATION: Union County, Oregon
Section 8 (NE , NW , SW ), T. 5 S., R. 43 E.
UTM Zone 11; 4,998,754 northing; 462,527 easting; NAD27
Latitude: 45 08 36 N; Longitude: 117 28 36 W
USGS Quadrangle: Steamboat
RANGE IN CHARACTERISTICS:
Soil Temperature: cryic regime
Mean Annual Soil Temperature: 35 to 36 degrees F
Mean Summer Soil Temperature: 41 to 42 degrees F
Mean Winter Soil Temperature: 28 to 33 degrees F
Soil Moisture: xeric regime, dry 45 to 60 consecutive days in summer
Particle-size Control Section: from 10 inches to a lithic contact
Clay content, average: 5 to 8 percent
Rock fragment content, average: 50 to 65 percent
Diagnostic Horizons and Features:
vitrandic subgroup properties: from the mineral surface 7 to 10 inches thick
Al+1/2Fe(aox): 0.7 to 1.0 percent
bulk density: 1.0 to 1.3 percent (g/cc)
P retention: 60 to 70 percent
glass content in the 0.02-2.0mm fraction: 5 to 25 percent
water content 1500 kPa (air dried): 10 to 15 percent
8Si + 2Fe (aox): 2 to 4 percent
umbric epipedon: 7 to 10 inches thick
lithic contact, depth: 14 to 20 inches
Major Horizons:
A horizon:
color, moist: 7.5YR 3/3; 10YR 2/2, 3/3
color, dry: 7.5YR 5/3;10YR 4/3, 5/3
texture: GRV-ASHY-SL, STV-ASHY-SL
clay content: 5 to 10 percent
rock fragment content: 40 to 50 percent
gravel: 20 to 30 percent
cobbles: 5 to 10 percent
stones: 5 to 15 percent
reaction: moderately acid to slightly acid; pH: 5.6 to 6.5
base saturation (NH4OAc): 30 to 50 percent
Bw horizon:
color, moist: 7.5YR 3/4; 10YR 3/4
color, dry: 7.5YR 5/4; 10YR 4/4, 5/4
texture: GRV -LS, STV- SL, STX- SL, STX- LS
clay content: 5 to 8 percent
rock fragment content: 50 to 75 percent
gravel: 25 to 45 percent
cobbles: 5 to 25 percent
stones: 10 to 25 percent
reaction: moderately acid to slightly acid; pH: 5.6 to 6.5
base saturation (NH4OAc): 20 to 40 percent
COMPETING SERIES:
There are no competing series
GEOGRAPHIC SETTING:
Landform: shoulder slopes and backslopes of mountains
Slopes gradient: 0 to 90 percent
Parent material: colluvium from granite with a minor influence of volcanic ash
Lithology: granite
Elevation: 7,000 to 7,400 feet
Climate: cold, wet winters and cool, moist summers
Mean annual precipitation: 40 to 55 inches
Mean annual air temperature: 33 to 35 degrees F
Frostfree period: 15 to 25 days
GEOGRAPHICALLY ASSOCIATED SOILS:
McCalpinemeadow (T): on concave backslopes under subalpine fir forest; volcanic ash mantle; moderately deep to a lithic contact
Prouty (E): on planer to convex footslopes under Engelmann spruce and subalpine fir forest; mixed ash mantle; moderately deep to a lithic contact
Marblepoint (T): on glaciated footslopes under Engelmann spruce and subalpine fir forest; thin ash mantle; very deep
Moodybasin (T): on moraines in glaciated valleys under green fescue, lupine and scattered subalpine fir; minor volcanic ash; moderately deep to a densic contact
Rockcreekbutte (T): on steep, convex backslopes and shoulders under open subalpine fir and whitebark pine forest; minor volcanic ash; moderately deep to bedrock;
DRAINAGE AND PERMEABILITY:
Drainage: well drained
Permeability: moderately rapid over rapid
USE AND VEGETATION: These soils are used for watershed, recreation and wildlife habitat. native vegetation: few scattered subalpine fir and whitebark pine with common snowberry, Sitka alder, mountain big sagebrush, white hawkweed, elk sedge, mountain brome and bottlebrush squirreltail.
Plant association: ARTRV/CAGE2 (mountain big sage/elk sedge (alpine))
DISTRIBUTION AND EXTENT:
Distribution:. Blue Mountains of northeastern Oregon; MLRA 43c
Extent: small
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon
SERIES PROPOSED: Wallowa-Whitman National Forest, Oregon 2007. The name is from a dance to the Ring of Fire. In past reviews it was proposed as VanPatten but the name was to similar to the established VanPetten Series.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
umbric epipedon: 0 to 8 inches; A
vitrandic subgroup properties: 0 to 8 inches; A
particle-size control section: 10 to 16 inches; Bw1, Bw2
lithic contact: 16 inches; R
low base saturation (dystric) less than 50 percent throughout: 0 to 16 inches; A, Bw1, Bw2
National Cooperative Soil Survey
U.S.A.