LOCATION SOLLEKS WAEstablished Series
TAXONOMIC CLASS: Medial-skeletal, mixed, isofrigid Pachic Fulvudands
TYPICAL PEDON: Solleks very gravelly medial loam, forested. (Colors are for moist soil unless otherwise noted. All textures are apparent field textures.)
Oi--0 to 1 inch; slightly decomposed needles, leaves, and twigs.
A--1 to 11 inches; dark brown (10YR 3/3) very gravelly medial loam, brown (10YR 5/3) dry; weak fine and very fine granular structure; slightly hard, friable, slightly sticky and slightly plastic and weakly smeary; many fine and very fine, and common medium roots; many fine and very fine irregular and tubular pores; 40 percent angular pebbles and 10 percent angular cobbles; very strongly acid (pH 5.0); gradual smooth boundary. (10 to 12 inches thick)
Bw1--11 to 23 inches; dark yellowish brown (10YR 4/4) very cobbly medial loam, light yellowish brown (10YR 6/4) dry; weak fine and very fine subangular blocky structure; slightly hard, friable, slightly sticky and plastic and weakly smeary; many fine and very fine, common medium roots; many fine and very fine irregular and tubular pores; 30 percent angular pebbles and 30 percent angular cobbles; strongly acid (pH 5.2); gradual smooth boundary. (5 to 14 inches thick)
Bw2--23 to 34 inches; dark yellowish brown (10YR 4/4) extremely cobbly medial loam, light yellowish brown (10YR 6/4) dry; weak fine and very fine subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic and weakly smeary; common fine and very fine, and few medium roots; many fine and very fine irregular, and common fine and very tubular pores; 30 percent angular pebbles and 40 percent angular cobbles; strongly acid (pH 5.4); clear smooth boundary.
R--34 inches; fractured sandstone.
TYPE LOCATION: Clallam County, Washington; 100 yards above logging road 2970; 3,400 feet south and 2,000 feet west of the NE corner of section 15, T.29N., R.11W.
RANGE IN CHARACTERISTICS: The mean annual soil temperature is 43 to 47 degrees F. The mean summer soil temperature is 47 to 50 degrees F and the mean winter soil temperature is 40 to 45 degrees F. The difference between the mean summer and winter soil temperature is 5 to 9 degrees F. These soils are usually moist and are dry 0 to 30 consecutive days in the summer; udic soil moisture regime. Depth to bedrock is 20 to 40 inches. The solum has andic soil properties with 35 to 85 percent rock fragments by volume. The andic soil material has an estimated moist bulk density of 0.30 to 0.70 g/cc, acid-oxalate extractable aluminum plus on-half of the acid-oxalate extractable iron of 2 to 5 percent, phosphate retention of 85 to 100 percent, 15-bar water retention of 25 to 50 percent for air-dried samples and acid oxalate iron of 1.0 to 2.5 percent. It has 2 to 8 cmol/kg of aluminum. The particle-size control section has 10 to 25 percent field estimated clay and 10 to 30 percent sand. It is strongly or very strongly acid.
The A horizon has hue of 7.5YR or 10YR, value of 2 or 3 moist, 4 or 5 dry, and chroma of 2 or 3. This horizon has granular, angular blocky, or subangular blocky structure. It has 20 to 40 percent organic matter.
The B horizon has hue of 7.5YR, 10YR or 2.5Y, value of 3 through 5 moist, 5 through 7 dry, and chroma of 3 through 6 moist, and 4 or 6 dry. It is medial loam or medial silt loam and is extremely gravelly, extremely cobbly, or extremely channery. This horizon has angular blocky or subangular blocky structure. It has 7 to 20 percent organic matter.
COMPETING SERIES: These are the Hookbranch, Itswoot, Lunchcreek, and Snahopish series. Itswoot, Lunchcreek and Snahopish soils are more than 40 inches deep. Hookbranch and Lunchcreek soils have a perudic soil moisture regime.
GEOGRAPHIC SETTING: Solleks soils are on mountainsides at elevations of 600 to 2,800 feet. Slopes are 30 to 100 percent. They formed in residuum and colluvium from sandstone or conglomerate. The soils are in a mild marine climate and have cool, moist summers and cool, wet winters. The mean annual precipitation is 100 to 170 inches. The average January temperature is about 36 degrees F.; the average July temperature is about 57 degrees F.; and the mean annual temperature is about 41 to 45 degrees F. The frost free season is 120 to 140 days.
GEOGRAPHICALLY ASSOCIATED SOILS: This is the competing Snahopish series and the Bunch series. Bunch soils have albic and spodic materials.
DRAINAGE AND PERMEABILITY: Well drained; medium runoff; moderate permeability.
USE AND VEGETATION: Timber production is the principal use. Native vegetation is predominantly western hemlock with some Sitka spruce and Pacific silver fir. Understory species include salmonberry, red huckleberry, salal, vine maple, Oregon oxalis, western swordfern, deer fern and ladyfern.
DISTRIBUTION AND EXTENT: Olympic Peninsula, Washington; MLRA 4A. This series is of moderate extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Jefferson County, Washington, 1971.
REMARKS: Diagnostic horizons and other features are:
- Umbric epipedon - 1 to 11 inches
- Cambic horizon - 11 to 34 inches
- All depths to diagnostic horizon and features are measured from the top of the first mineral horizon.
ADDITIONAL DATA: NSSL pedon S98WA-027-003.