LOCATION KLABER WAEstablished Series
TAXONOMIC CLASS: Fine, mixed, superactive, mesic Typic Glossaqualfs
TYPICAL PEDON: Klaber silt loam, pasture. (Colors are for moist soil unless otherwise stated.)
A--0 to 3 inches; very dark grayish brown (10YR 3/2) silt loam, grayish brown (10YR 5/2) dry; (10YR 3/2) rubbed; few fine prominent yellowish red (5YR 4/8) mottles, reddish yellow (5YR 6/8) dry; moderate medium fine and very fine granular structure; slightly hard, friable, slightly sticky and slightly plastic; many very fine, fine, and medium roots; many very fine interstitial pores; strongly acid (pH 5.4); abrupt smooth boundary. (2.5 to 3.5 inches thick)
Eg--3 to 8 inches; dark gray (10YR 4/1) silt loam, light brownish gray (10YR 6/2) dry; very dark grayish brown (10YR 3/2) rubbed; common fine prominent yellowish red (5YR 4/8) mottles, yellowish red (5YR 5/6)dry; moderate medium subangular blocky structure parting to moderate fine and very fine subangular blocky; hard, friable, slightly sticky and slightly plastic; many very fine, fine, and medium roots; many very fine tubular pores; common iron-manganese shot-like concretions; very strongly acid (pH 5.0); clear smooth boundary. (4 to 6 inches thick)
E/Bg--8 to 22 inches; 60 percent grayish brown (10YR 5/2) silty clay loam E coatings on peds, 5 to 15 mm thick, white (10YR 8/1) dry; 40 percent grayish brown (10YR 5/2) silty clay loam B ped interiors, pale brown (10YR 6/3) dry; common medium prominent yellowish red (5YR 5/8) mottles, yellowish brown (10YR 5/4) rubbed; moderate very coarse subangular and angular blocky structure parting to moderate medium and coarse subangular and angular blocky; very hard, friable, sticky and slightly plastic; common very fine, fine, and medium roots; many very fine and fine tubular pores; few thin clay films on ped and in pores; common iron-manganese shot-like concretions; very strongly acid (pH 4.8); gradual smooth boundary. (11 to 16 inches thick)
Bt--22 to 60 inches; yellowish brown (10YR 5/4) silty clay, pale brown (10YR 6/3) dry, dark yellowish brown (10YR 4/4) rubbed; many medium prominent yellowish red (5YR 5/8) mottles, reddish yellow (7.5YR 6/8) dry; strong very coarse and coarse subangular and angular blocky structure; very hard, firm, sticky and plastic; few very fine and fine roots; common very fine and fine tubular pores; many thick black (10YR 2/1) clay films on faces of peds and in pores; white (10YR 8/1) dry tongues of A2 material along faces of peds, films on faces of peds and in pores; white (10YR 8/1) dry tongues of A2 material along faces of peds, tongues are 5 to 15 inches in depth, are continuous, and are 3 to 10 mm thick; medium acid (pH 5.8).
TYPE LOCATION: Lewis County, Washington; 1,700 feet west, 200 feet north of the SE corner of sec. 25, T.11N., R.2W.
RANGE IN CHARACTERISTICS: Thickness of the sola is more than 60 inches. Mean annual soil temperature at depth of 20 inches ranges from 47 degrees to 53 degrees F. The control section is silty clay loam or silty clay and have 35 to 42 percent clay. Rock fragments are less than 5 percent.
The A and Eg horizons have value of 2 through 7 moist, 4 through 7 dry, and chroma of 1 or 2 moist or dry. They have moderate granular or subangular blocky structure. The Eg horizon is 4 to 6 inches thick. These horizon is strongly acid or very strongly acid.
The E/Bg horizon has hue of 10YR or 2.5Y, value of 4 or 5 moist, 6 through 8 dry, and chroma of 1 through 3 moist or dry. The A2 portion is silt loam or silty clay loam and occupies 50 to 75 percent of the volume. The B portion is silty clay loam or silty clay and has 35 to 42 percent clay. Reaction is strongly acid or very strongly acid.
The Bt horizon has hue of 10YR or 2.5Y, value of 4 through 6 moist, 6 or 7 dry, and chroma of 3 or 4 moist or dry. The clay films have a value of 2 or 3 and chroma of 1 through 3. This horizon is silty clay loam or silty clay and has 35 to 42 percent clay. It is medium acid or strongly acid.
COMPETING SERIES: This is the Lacamas series. Lacamas soils have 43 to 60 percent clay in the control section, have an E horizon that ranges in thickness from 5 to 16 inches, and have a Bt horizon with strong prismatic structure.
GEOGRAPHIC SETTING: Klaber soils are on nearly level poorly drained areas on glacial terraces at elevations of 100 to 1,000 feet. The soils formed in mixed material from glacial and sedimentary sources. These soils occur in a climate with 40 to 70 inches annual precipitation occurring mostly as rain in the winter. The mean January temperature is 37 degrees F., mean July temperature is 64 degrees F., and the mean annual temperature is 50 degrees F. The frost-free season is 125 to 200 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Cinebar, Galvin, Glenoma, Salkum and Scamman soils and the competing Lacamas soils. Cinebar and Glenoma soils formed in material high in volcanic ash. Galvin and Scamman soils are somewhat poorly drained and Galvin soils lack an albic horizon. Olequa and Salkum soils are well drained.
DRAINAGE AND PERMEABILITY: Poorly drained; slow runoff to ponded; slow permeability. A perched water table is as high as the surface to 6 inches below the soil surface at times from November through May.
USE AND VEGETATION: Used for woodland and cropland. Hay, pasture and small grains are common crops. Native vegetation is western redcedar, western hemlock, Douglas-fir, Oregon ash, and red alder with an understory of vine maple, rose, salal, western swordfern, western brackenfern, and sedge.
DISTRIBUTION AND EXTENT: Lewis County, Washington. This series is of small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Lewis County, Washington, 1941.
REMARKS: Diagnostic horizons and features recognized in this pedon are an ochric epipedon from the surface to 8 inches and an argillic horizon from 8 to 60 inches that is tongued with albic material in the part from 8 to 22 inches.