LOCATION BRICKEL WA+IDEstablished Series
TAXONOMIC CLASS: Loamy-skeletal, isotic Vitrandic Haplocryolls
TYPICAL PEDON: Brickel stony ashy loam - grassland. (Colors are for dry soil unless otherwise noted.)
A--0 to 13 inches; grayish brown (10YR 5/2) stony ashy loam, very dark grayish brown (10YR 3/2) moist; weak very fine and fine granular structure; soft, very friable, slightly sticky and slightly plastic; common very fine and many fine roots; many very fine and fine pores; 15 percent gravel and 10 percent stones; moderately acid (pH 6.0); clear wavy boundary. (5 to 16 inches thick)
Bw--13 to 23 inches; brown (10YR 5/3) very stony ashy loam, dark brown (10YR 3/3) moist; weak fine and medium subangular blocky structure; soft, very friable, slightly sticky and slightly plastic; many very fine and fine roots; common fine and very fine pores; 15 percent gravel, 10 percent cobbles and 20 percent stones; moderately acid (pH 6.0); clear wavy boundary. (5 to 16 inches thick)
C--23 to 36 inches; pale brown (10YR 6/3) very stony sandy loam, brown (10YR 4/3) moist; massive; soft, very friable, nonsticky and nonplastic; many very fine and fine roots; common very fine and fine pores; 15 percent gravel, 15 percent cobbles and 25 percent stones; moderately acid (pH 6.0); abrupt irregular boundary. (3 to 14 inches thick)
R--36 inches; fractured granite with some fines in fracture planes.
TYPE LOCATION: Pend Oreille County, Washington; about 0.25 miles west of Timber Mountain Lookout, 500 feet east of the northwest corner of section 24, T.35N., R.42E.
RANGE IN CHARACTERISTICS: The solum is 10 to 32 inches thick. Depth to bedrock is 20 to 40 inches. The mean annual soil temperature is 39 to 46 degrees F. The mean summer soil temperature is 50 to 59 degrees F. The control section has 35 to 70 percent rock fragments, by weighted average. The soil is moderately or slightly acid.
The A horizon has hue of 7.5YR or 10YR, value of 3 to 5 dry, 2 or 3 moist and chroma of 1 to 4 dry, 1 to 3 moist. Texture is ashy silt loam or ashy loam with 5 to 50 percent rock fragments.
The Bw horizon has hue of 7.5YR or 10YR, value of 5 or 6 dry, 3 or 4 moist and chroma of 2 to 4 dry or moist. Texture is ashy fine sandy loam, ashy sandy loam, ashy loam or ashy silt loam with 35 to 75 percent rock fragments.
The C horizon has value of 5 to 7 dry, 4 or 5 moist and chroma of 3 or 4 dry or moist. Texture is sandy loam, silt loam or loam with 40 to 90 percent rock fragments.
COMPETING SERIES: This is the Darland series. Darland soils do not have a lithic contact above a depth of 40 inches.
GEOGRAPHIC SETTING: Brickel soils are mountain slopes at elevations of 4,500 to 7,000 feet. Slopes are 5 to 75 percent. These soils are dominately formed in granitic rock with an influence of loess and volcanic ash in the upper part. In some areas, these soils are formed in metasedimentary bedrock. The summers are cool and relatively dry and the winters are cold and wet. The mean annual precipitation is 35 to 55 inches including about 10 feet of snow. The average January temperature is about 19 degrees F, the average July temperature is about 58 degrees F, and the mean annual temperature is 39 to 44 degrees F. The frost-free season is less than 80 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Divers, Huckleberry, and Vassar soils. Divers and Huckleberry soils have ochric epipedons. Vassar soils have less than 35 percent rock fragments in the particle-size control section and have a lithic contact at a depth of more than 40 inches.
DRAINAGE AND PERMEABILITY: Well drained; rapid runoff; moderate permeability.
USE AND VEGETATION: These soils are used for grazing and recreation. Vegetation is beargrass, huckleberry, mountain-ash, red fescue, scattered subalpine fir, and whitebark pine.
DISTRIBUTION AND EXTENT: Northeastern Washington and northwestern Idaho. The series is of small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Bozeman, Montana
SERIES ESTABLISHED: Spokane County, Washington, l964.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Mollic epipedon - the zone from the surface to 23 inches
Lithic contact at 36 inches.
Vitrandic influence - the zone from 0 to 23 inches - estimated to have 5 to 20 percent volcanic glass and acid-oxalate extractable aluminum plus one-half of the acid-oxalate extractable iron of 0.4 to 1.0 percent.
Particle-size control section - from 10 to 36 inches
Classification revised 11/02 from Loamy-skeletal, mixed Vitrandic Cryoborolls to Loamy-skeletal, isotic Vitrandic Haplocryolls.
This draft reflects a change in the modal pedon for the series. The pedon for the official type location in Spokane County has been moved to Pend Oreille County, Washington to reflect a more modal concept with Vitrandic properties. The Spokane pedon, after further investigation during the survey update, has an ash mantle meeting andic soil properties.