LOCATION SCHUTZ WAEstablished Series
TAXONOMIC CLASS: Medial-skeletal, ferrihydritic, frigid Typic Udivitrands
TYPICAL PEDON: Schutz extremely gravelly medial loam-forestland, on a 62 percent east-southeasterly aspect at an elevation of 1,810 feet in a western hemlock/salal plant association. (When described on March 30, 1994, the soil was moist throughout. Colors are for moist soil unless otherwise stated.)
Oi--0 to 1 inch; slightly decomposed needles, leaves, and wood fragments; abrupt smooth boundary. (1 to 3 inches thick)
Oe--1 to 3 inches; moderately decomposed organic materials; abrupt smooth boundary. (0.5 to 2.0 inches thick)
A--3 to 7 inches; dark brown (10YR 3/3) extremely gravelly medial loam, pale brown (10YR 6/3) dry; weak very fine and fine subangular blocky and weak very fine and fine granular structure; slightly hard, friable, nonsticky and nonplastic; weakly smeary; many very fine and fine and common medium and coarse roots; many very fine and fine tubular and irregular pores; 65 percent gravel; very strongly acid (pH 4.8); clear smooth boundary. (2 to 6 inches thick)
Bw1--7 to 14 inches; dark yellowish brown (10YR 3/4) extremely gravelly medial loam, light yellowish brown (10YR 6/4) dry; weak very fine and fine subangular blocky and weak very fine and fine granular structure; slightly hard, friable, slightly sticky and slightly plastic; weakly smeary; many very fine and common fine, medium, and coarse roots; many very fine and fine tubular and irregular pores; 60 percent gravel, 10 percent cobbles; strongly acid (pH 5.4); clear wavy boundary.
Bw2--14 to 23 inches; dark yellowish brown (10YR 3/4) extremely gravelly medial loam, light yellowish brown (10YR 6/4) dry; weak very fine and fine subangular blocky and weak very fine and fine granular structure; slightly hard, friable, slightly sticky and slightly plastic; weakly smeary; common very fine, fine, medium, and coarse roots; common very fine and fine tubular and irregular pores; 65 percent gravel, 10 percent cobbles; moderately acid (pH 5.6); clear wavy boundary. (Combined thickness of the Bw horizon is 8 to 17 inches thick.)
Bw3--23 to 37 inches; dark yellowish brown (10YR 3/6) extremely gravelly medial loam, very pale brown (10YR 7/4) dry; weak very fine, fine, and medium subangular blocky and weak very fine and fine granular structure; slightly hard, friable, slightly sticky and slightly plastic; weakly smeary; common very fine and fine and few medium and coarse roots; common very fine and fine tubular and irregular pores; 50 percent gravel, 30 percent cobbles; moderately acid (pH 5.8); clear wavy boundary. (18 to 34 inches thick)
R--37 inches; fractured hard metasedimentary rock.
TYPE LOCATION: Clallam County, Washington, about 3 1/3 miles northeast of Snider Peak, about 2,290 feet east and 615 feet north of the southwest corner of Section 2, T. 30 N., R. 11 W. (Latitude 48 degrees, 07 minutes, 11 seconds N., Longitude 124 degrees, 04 minutes, 56 seconds W.)
RANGE IN CHARACTERISTICS: Mean annual soil temperature is 44 to 47 degrees F. These soils are usually moist, and are dry 0 to 30 consecutive days in the soil moisture control section; udic moisture regime. Depth to bedrock is 20 to 40 inches. The particle-size control section from the mineral soil surface to bedrock has andic soil properties and 60 to 90 percent rock fragments by volume. The andic soil material has an estimated moist bulk density of 0.70 to 0.90 g/cc, acid-oxalate extractable aluminum plus one half of the acid-oxalate extractable iron of 2 to 3 percent, phosphate retention of 85 to 100 percent, and 15-bar water retention of 12 to 15 percent for air dried samples and 20 to 30 percent for moist samples. Acid oxalate extractable iron is 1.5 to 3.0 percent.
The A horizon has hue of 10YR or 7.5YR moist and dry, value of 5 through 7 dry, and chroma of 3, 4, or 6 moist and 2 through 4 dry. Reaction is very strongly or strongly acid. It has 5 to 10 percent organic matter.
The Bw horizon has hue of 10YR, 7.5YR, or 2.5Y moist and dry, value of 3 through 5 moist and 6 or 7 dry, and chroma of 3, 4, or 6 moist. It is extremely gravelly medial loam, extremely gravelly medial sandy loam, or extremely cobbly medial sandy loam. Reaction is strongly or moderately acid. It has 1 to 7 percent organic matter.
COMPETING SERIES: There are no competing series.
GEOGRAPHIC SETTING: Schutz soils are on glaciated mountain slopes. Slopes are 15 to 90 percent. The soils formed in colluvium and residuum from sedimentary and metasedimentary rocks. Elevations are 1,400 to 2,500 feet. Average annual precipitation is 85 to 100 inches. Average annual temperature is 42 to 45 degrees F. The frost-free season is 140 to 160 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Pistol and Ruprecht soils. Pistol soils are moderately well drained and have dense till at 20 to 40 inches. Ruprecht soils are 4 to 10 inches deep to bedrock.
DRAINAGE AND PERMEABILITY: Well drained; moderate permeability.
USE AND VEGETATION: Timber production, wildlife habitat, recreation, and watershed. Native vegetation is western hemlock, Douglas-fir, western redcedar, salal, Oregon-grape, western swordfern, and red huckleberry.
DISTRIBUTION AND EXTENT: Clallam County, Washington; MLRA 1. Series is of small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Clallam County, Washington, 2000; Olympic National Forest.
REMARKS: Diagnostic horizons and features recognized in this pedon are the following:
Ochric epipedon
Cambic horizon - 7 to 37 inches
Andic soil properties - 3 to 37 inches
Lithic contact - 37 inches
PSCS - 3 to 37 inches
All depths to diagnostic horizons and other features are measured from the top of the first mineral horizon.