LOCATION REVEL WAEstablished Series
TAXONOMIC CLASS: Coarse-loamy, isotic, frigid Typic Haplorthods
TYPICAL PEDON: Revel loam - on 52 percent west facing convex slope under a Douglas-fir canopy at 1,450 feet elevation. (Colors are for moist soil unless otherwise noted. All textures are apparent field textures.)
Oi--l.5 to 0.5 inches; needles, leaves and twigs.
Oa--0.5 inch to 0; decomposed needles, leaves and twigs; many very fine and common fine roots.
A--0 to 4 inches; dark brown (7.5YR 4/4) loam, brown (7.5YR 5/4) dry; weak fine subangular blocky structure; soft, very friable, nonsticky, nonplastic, weakly smeary; common very fine few fine and medium roots; many fine irregular pores; 5 percent hard rounded pebbles and l5 percent weathered angular pebbles; NaF pH l0.0; moderately acid (pH 6.0); clear smooth boundary. (3 to 9 inches thick)
Bs--4 to l6 inches; dark brown (7.5YR 4/4) loam, yellowish brown (l0YR 5/4) dry; weak fine subangular blocky structure; soft, very friable, nonsticky, nonplastic, weakly smeary; common fine and medium roots; many fine irregular pores; 35 percent weathered angular pebbles; NaF pH ll.0; moderately acid (pH 6.0); clear smooth boundary. (5 to l8 inches thick)
C--l6 to 35 inches; dark yellowish brown (l0YR 4/4) sandy loam, light yellowish brown (l0YR 6/4) dry; massive; soft, very friable, nonsticky, nonplastic; weakly smeary; few fine and medium roots; many fine irregular pores; 60 percent weathered angular pebbles and l0 percent weathered angular cobbles; NaF pH l0.5; strongly acid (pH 5.2); abrupt smooth boundary. (9 to l9 inches thick)
2Cr--35 inches; sandstone; few fine roots within rock fractures.
TYPE LOCATION: Whatcom County, Washington; about 6 miles south of Bellingham; 600 feet north and l00 feet west of the southeast corner of sec. 30, T. 37 N., R. 3 E.
RANGE IN CHARACTERISTICS: Mean annual soil temperature is 45 to 47 degrees F. Depth to a paralithic contact with sandstone or siltstone and thickness of the volcanic ash influence is 20 to 40 inches. These soils are usually moist, but the moisture control section is dry in all parts for 45 to 60 consecutive days within the four months that follow the summer solstice in 6 or more years out of l0. By weighted average the particle-size control section has 35 to 65 percent weathered pebbles, 0 to l5 percent weathered cobbles, and 0 to l5 percent hard rounded pebbles. Reaction is strongly acid or moderately acid throughout.
The A horizon has hue of 7.5YR or l0YR, value of 2 through 4 moist, 4 through 6 dry, and chroma of 2 through 4 moist and dry. It has l5 to 25 percent soft pebbles and 0 to l0 percent hard pebbles. Some pedons have an E horizon.
The Bs horizon has hue of 7.5YR or l0YR, value of 3 through 5 moist; 5 through 7 dry, and chroma of 3 or 4 moist and dry. It is loam or sandy loam. Some pedons have a Bs horizon.
The C horizon has hue of l0YR or 2.5Y, value of 4 through 6 moist, 6 through 8 dry, and chroma of 3 or 4 moist and dry. It is loam, sandy loam, or fine sandy loam.
COMPETING SERIES: These are the Bangor, Becket, Berkshire, Chatham, Dekapen, Dixfield, Groveton, Houghtonville, Marlow, Michigamme, Mundal, Onota, Rawsonville, Rixon, Tunbridge, and Welcome series and the similar Oconto, Rixon, and Rugles series. Bangor, Becket, Berkshire, Chatham, Groveton, Houghtonville, Marlow, Oconto, Rugles, and Welcome soils are more than 40 inches deep. Dekapen, Mundal and Rixon soils have a paralithic contact with dense glacial till at 20 to 40 inches. Dixfield and Onota soils have a udic moisture regime and have less than 10 percent weathered sandstone in the particle-size control section. Michigamme, Rawsonville and Tunbridge soils have a lithic contact at 20 to 40 inches.
GEOGRAPHIC SETTING: Revel soils are on mountain backslopes, ridges, and plateaus at elevations of l,200 to 2,200 feet. Slopes are 5 to 60 percent. The soils formed in volcanic ash and colluvium and slope alluvium from sandstone, siltstone, and glacial till. Revel soils are in a marine climate. Summers are warm and dry. Winters are cold and wet with snow cover lasting from December through March. Average annual precipitation is 45 to 65 inches. Mean January temperature is about 32 degrees F; mean July temperature is about 61 degrees F. Mean annual temperature is about 45 degrees F. The frost-free season is l20 to l50 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the competing Welcome soils and the Cathcart, Getchell, Nati, and Squalicum soils. Cathcart soils are mesic and deep to a paralithic contact. Getchell soils are cryic and moderately deep to a paralithic contact with dense compact glacial till. Nati soils are mesic. Squalicum soils are mesic and 40 to 60 inches deep to a paralithic contact with dense compact glacial till.
DRAINAGE AND PERMEABILITY: Well drained; slow to medium runoff; moderate permeability.
USE AND VEGETATION: Used for timber production, recreation, watershed, and wildlife habitat. Vegetation is Douglas-fir, western hemlock, western redcedar, and red alder with an understory of western swordfern, salal, Oregon-grape, western brackenfern, and red huckleberry.
Whatcom County, Washington. The series is of small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Whatcom County, Washington, l983.
REMARKS: Diagnostic horizons and features recognized in this pedon are an ochric epipedon from the mineral surface to 4 inches, a spodic horizon from 4 to 16 inches, and a paralithic contact with sandstone at 35 inches. The spodic horizon is not assumed to meet chemical criteria for a spodic horizon but to meet micro morphological criteria, i.e. cracked coatings and silt-sized and larger pellets.