LOCATION BURGERBUTTE             OR

Established Series
Rev. RJO/JLW/DAL
10/2012

BURGERBUTTE SERIES

The Burgerbutte series consists of shallow, well drained soils on ridges, shoulders and backslopes of mountains. Burgerbutte soils formed in basalt colluvium with a minor influence of volcanic ash. Slopes are 0 to 90 percent. Mean annual precipitation is about 50 inches and mean annual temperature about 33 degrees F.

TAXONOMIC CLASS: Loamy-skeletal, isotic Lithic Humicryepts

TYPICAL PEDON: Burgerbutte extremely cobbly ashy sandy loam - rangeland, on a 30 percent southfacing slope at an elevation of 7,200 feet. (Colors are for moist soil unless otherwise noted.)

A--0 to 10 inches; dark brown (10YR 3/3) extremely cobbly ashy sandy loam, brown (7.5YR 5/4) dry; common fine subangular blocky and weak fine granular structure; soft, friable, nonsticky and nonplastic; many very fine and fine, and few medium roots throughout; common fine irregular pores; 20 percent gravel, 35 percent cobbles, and 10 percent stones; moderately acid (pH 6.0); clear smooth boundary. (7 to 12 inches thick)

Bw--10 to 18 inches; brown (7.5YR 4/4) extremely cobbly ashy loam, strong brown (7.5YR 5/6) dry; weak very fine subangular blocky structure; soft, friable, slightly sticky and nonplastic; many very fine and fine, and few medium roots throughout; few fine irregular pores; 25 percent gravel, 35 percent cobbles, and 15 percent stones; moderately acid (pH 6.0); abrupt irregular boundary. (6 to 10 inches thick)

R--18 inches; basalt.

TYPE LOCATION: Baker County, Oregon
Section 17 (NW , SE , SE ), T. 6 S., R. 46 E.
Latitude: 45 02 21 N; Longitude: 117 06 28 W
UTM Zone 11; 4,987,082 northing; 491,512 easting; NAD27
USGS Quadrangle: Deadman Point

RANGE IN CHARACTERISTICS:
Soil Temperature: cryic regime
Mean Annual Soil Temperature: 36 to 40 degrees F
Mean Summer Soil Temperature: 44 to 47 degrees F
Mean Winter Soil Temperature: 27 to 34 degrees F
Soil Moisture: xeric regime, dry 45 to 60 consecutive days in summer

Particle-size Control Section: from 10 inches below the mineral surface to the lithic contact
Clay content, average: 5 to 15 percent
Rock fragment content, average: 60 to 75 percent

Diagnostic Horizons and Features:
vitrandic subgroup properties: from the mineral surface to a lithic contact; 13 to 20 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 12 inches thick
cambic horizon: 6 to 10 inches thick
lithic contact, depth: 14 to 20 inches
eutric properties (base saturation >50 percent): layer directly above the lithic contact

Major Horizons:
A horizon:
color, moist: 7.5YR 2.5/3, 3/2, 3/3; 10YR 3/3
color, dry: 7.5YR 3/3, 4/4; 10YR 5/4
texture: CBX-ASHY-SL, STX-ASHY-SIL, STX-ASHY-L, CBX-ASHY-L
clay content: 5 to 15 percent
rock fragment content: 60 to 70 percent
gravel: 15 to 35 percent
cobbles: 20 to 35 percent
stones: 0 to 30 percent
reaction: strongly acid to moderately acid; pH: 5.1 to 6.0
base saturation (NH4OAc): 30 to 50 percent

Bw horizon:
color, moist: 7.5YR 3/4, 4/2, 4/3, 4/4
color, dry: 7.5YR 4/4, 5/4, 5/6
texture: CBX-ASHY-SL, STX-ASHY-L, STX-ASHY-SIL, STX-ASHY-SL
clay content: 5 to 15 percent
rock fragment content: 60 to 85 percent
gravel: 20 to 35 percent
cobbles: 20 to 35 percent
stones: 0 to 30 percent
reaction: strongly acid to moderately acid; pH: 5.1 to 6.0
base saturation (NH4OAc): 50 to 70 percent

COMPETING SERIES:
Aniak: formed in silty eolian material mixed with weathered shale, slate, or schist; does not have a cambic; udic moisture regime, subarctic climate
Crawfish: very shallow (4 to 10 inches) to a lithic contact; does not have a cambic horizon
Eastlakesbasin: does not have a cambic horizon
Ferebee: very shallow and shallow (7 to 14 inches) to a lithic contact; udic or perudic moisture regime
Goldcord: very shallow and shallow (8 to 20 inches) to a lithic contact; formed in mixed loess and gravelly till over metamorphic and igneous bedrock; udic moisture regime
Snowtell: formed in reworked till from volcanic rocks; does not have a cambic horizon; dry 60 to 75 consecutive days
Shermount: formed in residuum and colluvium from sedimentary rock; does not have a cambic horizon; base saturation (NH4OAc) is 35 to 50 percent in layer directly above the lithic contact
Teewinot: does not have a cambic horizon; formed in residuum from granite or gneiss; base saturation (NH4OAc) is 20 to 50 percent in layer directly above the lithic contact; udic moisture regime
Telluride: formed in slope alluvium and colluvium over residuum and till from andesite, rhyolite, breccia, basalt, or tuff; udic moisture regime
Pattenbutte: formed in colluvium from granite with an influence of volcanic ash in surface horizon; does not have a cambic horizon: base saturation (NH4OAc) is 25 to 45 percent in layer directly above the lithic contact

GEOGRAPHIC SETTING:
Landform: ridges, shoulders and backslopes of mountains
Slopes gradient: 0 to 90 percent
Parent material: influence of volcaniclastic volcanic ash mixed with colluvium
Lithology: Mazama ash mixed with basalt
Elevation: 6,800 to 7,600 feet
Climate: cold, wet winters and cool, moist summers
Mean annual precipitation: 40 to 60 inches
Mean annual air temperature: 29 to 36 degrees F
Frostfree period: 15 to 30 days

GEOGRAPHICALLY ASSOCIATED SOILS:
Bearpawmeadow: on concave backslopes and footslopes under closed canopy forest; 20 to 40 inches to bedrock; 7 to 14 inch volcanic ash mantle;
Clarkscreek: on moraines under grassland; 20 to 40 inches to bedrock; mixed ash and colluvium;
Cornucopiapeak: on benches, toeslopes and swales under grassland; 20 to 40 inches to bedrock; mixed ash and colluvium;
Crawfish: on convex ridges and shoulder slopes under grassland; 4 to 10 inches to lithic contact
Monumentrock: on planer backslopes under closed canopy forest; 40 to 60 inches to a paralithic contact; 7 to 14 inch volcanic ash mantle
Moodybasin: on moraines under rangeland; 20 to 40 inches to a densic contact; minor influence of volcanic ash
Mountemily: on concave back slopes and footslopes under closed canopy forest; greater than 60 inches; 14 to 20 inch volcanic ash mantle;
Puzzlecreek: on planar to concave, mid to lower backslopes under scattered forest; 20 to 40 inches to bedrock; mixed ash and colluvium;
Troutmeadows: on benches, toeslopes and swales under closed canopy forest; 20 to 40 inches to bedrock; 14 to 20 inch volcanic ash mantle;

DRAINAGE AND PERMEABILITY:
Drainage: well drained
Permeability: moderate

USE AND VEGETATION:
Use: watershed, wildlife habitat, livestock grazing and recreation
Native vegetation: mountain big sagebrush, mountain snowberry, Wyeths creamy buckwheat, lupinus species, Penstemon species, pokeweed fleeceflower, common yarrow, elk sedge, green fescue, Parry rush, prairie junegrass, bottlebrush squirreltail, mountain brome and northwest sedge.
Plant association: FEVI/CAHO (green fescue/hoods sedge); may include: ARTRV-SYOR2/BRCA (mt big sagebrush-mt snowberry/mt brome), ARTRV/SYOR2 (mt big sagebrush/mt snowberry), ARTRV/FEID (mt big sagebrush/idaho fescue)

DISTRIBUTION AND EXTENT:
Distribution: Central Rocky and Blue Mountains foothills; MLRA 10
Extent: small

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon

SERIES ESTABLISHED: Wallowa-Whitman National Forest, Oregon 2012.

REMARKS: Diagnostic horizons and features recognized in this pedon are:
umbric epipedon: 0 to 10 inches; A
cambic epipedon: 10 to 18 inches; Bw
vitrandic subgroup properties: 0 to 18 inches; A, Bw
particle-size control section: 10 to 18 inches; Bw
eutric (high base saturation) properties: 10 to 18 inches; Bw

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National Cooperative Soil Survey
U.S.A.