LOCATION VERLOT WAEstablished Series
TAXONOMIC CLASS: Medial, amorphic Typic Fulvicryands
TYPICAL PEDON: Verlot mucky silt loam, forested. (colors are for moist soils unless otherwise noted. All textures are apparent field textures.)
01--1 1/2 inches to 0; partially decomposed leaves, twigs, and needles; strongly acid (pH 5.4); abrupt smooth boundary.
A1--0 to 10 inches; black (10YR 2/1) mucky silt loam, very dark grayish brown (10YR 3/2) dry; weak fine subangular blocky structure; slightly hard, very friable, slightly sticky, slightly plastic and weakly smeary; common fine and medium roots; many fine interstitial pores; strongly acid (pH 5.2); abrupt wavy boundary. (8 to 12 inches thick)
A2--10 to 16 inches; brown (10YR 5/3) silt loam, pale brown (10YR 6/3) dry; black (10YR 2/1) organic coatings on faces of peds, dark grayish brown (10YR 4/2) dry; weak medium subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic and weakly smeary; common fine and medium roots; few fine tubular pores; strongly acid (pH 5.4); abrupt wavy boundary. (3 to 6 inches thick)
Bhs1--16 to 21 inches; reddish brown (5YR 4/4) silt loam, light reddish brown (5YR 6/4) dry; black (5YR 2/1) organic coatings on faces of peds, dark reddish gray (5YR 4/2) dry; common fine and medium faint yellowish red (5YR 4/4) mottles; moderate medium subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic and weakly smeary; few fine and medium roots; 5 percent rounded granitic pebbles; 5 percent concretions; strongly acid (pH 5.4); gradual wavy boundary. (5 to 7 inches thick)
Bhs2--21 to 26 inches; dark brown (7.5YR 4/4) gravelly silt loam, light brown (7.5YR 6/4) dry; common fine distinct dark reddish brown (5YR 3/3) mottles, reddish brown (5YR 5/3) dry; weak medium subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic and weakly smeary; few fine and medium roots; 20 percent pebbles; strongly acid (pH 5.4); gradual wavy boundary. (3 to 7 inches thick)
Bs--26 to 30 inches; dark brown (10YR 4/3) gravelly loam, pale brown (10YR 6/3) dry; common medium distinct dark reddish brown (5YR 3/2) mottles, reddish gray (5YR 5/2) dry; massive; slightly hard, friable, slightly sticky, slightly plastic and weakly smeary; few fine and medium roots; 20 percent pebbles; strongly acid (pH 5.4); gradual wavy boundary. (0 to 7 inches thick)
BC--30 to 35 inches; dark brown (10YR 4/3) gravelly loam, pale brown (10YR 6/3) dry; many medium distinct very dusky red(2.5YR 2/2) mottles, dusky red (2.5YR 3/2) dry; massive; slightly hard, friable, slightly sticky, slightly plastic and weakly smeary; few fine roots which are matted on top of the dense till; few fine tubular pores; 20 percent pebbles; strongly acid (pH 5.4); abrupt smooth boundary. (0 to 10 inches thick)
2Cd--35 to 60 inches; olive brown (2.5YR 4/4) and dark grayish brown (2.5YR 4/2) dense glacial till that breaks to gravelly loamy sand, light yellowish brown (2.5YR 6/4) and light brownish gray (2.5YR 6/2) dry; massive; hard, firm, nonsticky, nonplastic; horizontal laminations in upper few inches; 20 percent pebbles;strongly acid (pH 5.4).
TYPE LOCATION: Snohomish County, Washington; approximately 12 miles NE of Arlington; 2,200 feet west and 180 feet south of the NE corner of section 35, T.32N., R.7E.
RANGE IN CHARACTERISTICS: The solum thickness and depth to the dense glacial till (IICr horizon) are 20 to 40 inches. The mean annual soil temperature at a depth of 20 inches is estimated to range from 41 to 43 degrees F. The particle size control section averages 5 to 25 percent rock fragments.
The A1 horizon has hue of 5YR, 7.5YR, or 10YR, value of 2 or 3 moist, 4 or 5 dry, and chroma of 1 or 2 moist or dry. It has weak fine subangular blocky or weak fine granular structure. This horizon is very strongly acid or strongly acid.
The A2 horizon has hue of 7.5YR or 10YR, value of 5 or 6 moist, 6 or 7 dry, and chroma of 2 or 3 moist or dry. It has weak fine or weak medium subangular blocky structure. This horizon is strongly acid or medium acid.
The B horizon has hue of 5YR, 7.5YR, or 10YR, value of 3 through 6 moist, 4 through 7 dry, and chroma of 2 through 4 moist or dry. It is loam or silt loam in the upper part and gravelly loam or gravelly sandy loam in the lower part. This horizon has moderate medium or weak medium subangular blocky structure, or the soil is massive. It is strongly acid or medium acid.
The 2Cd horizon has hue of 2.5YR through 7.5YR, value of 4 or 5 moist, 5 or 6 dry, and chroma of 3 or 4 moist or dry. It breaks to gravelly loamy sand or gravelly sandy loam. This horizon has mottles in some pedons.
COMPETING SERIES: These are the Elwell, Getchell and Potchub series in other families. Elwell and Getchell soils lack a spodic horizon. Potchub soils have less than 1/2 of the spodic horizon in each pedon with a ratio of free iron to carbon less than 0.2.
GEOGRAPHIC SETTING: Verlot soils are on mountain slopes and plateaus at elevations ranging from 2,800 to 4,000 feet. Slopes are 3 to 25 percent. The soils formed in glacial till and volcanic ash. The till was derived from a wide variety of rock. Verlot soils are in a cool marine climate with cool, dry summers and cold, wet winters. The mean annual precipitation ranges from 80 to 100 inches. The mean January temperature is 26 degrees F.; the mean July temperature is 57 degrees F.; and the mean annual temperature is 41 degrees F. The frost free season is about 90 to 100 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Hartnit and Oso soils and the competing Getchell and Potchub soils. Hartnit and Oso soils have a lithic contact at a depth of 20 to 40inches.
DRAINAGE AND PERMEABILITY: Moderately well drained; slow runoff; moderate permeability to the dense glacial till and very slow in the dense glacial till.
USE AND VEGETATION: Woodland and wildlife habitat are the principal uses. Western hemlock, Pacific silver fir, white pussyfoot, and red huckleberry are the major vegetation.
DISTRIBUTION AND EXTENT: Snohomish County, Washington and parts of King, Skagit, and Whatcom Counties. This series is of small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Snohomish County,Washington, 1979.
REMARKS: Except for horizon nomenclature, classification only updated 3/94 because of recent amendments to Soil Taxonomy.