LOCATION STINGER OREstablished Series
TAXONOMIC CLASS: Coarse-loamy, mixed, superactive, mesic Typic Dystrudepts
TYPICAL PEDON: Stinger loam - forested, on a 75 percent north slope at an elevation of 2200 feet. (Colors are moist unless otherwise stated).
Oi--0 to 0.5 inch; partially decomposed needles and twigs.
A--0.5 to 3 inches; dark brown (10YR 3/3) loam, light olive brown (2.5Y 5/4) dry; moderate very fine and fine granular structure; slightly hard, very friable, nonsticky and nonplastic; many very fine and common fine, medium and coarse roots; 5 percent gravel; slightly acid (pH 6.5); clear smooth boundary. (3 to 7 inches thick)
Bw1--3 to 17 inches; light olive brown (2.5Y 5/4) sandy loam, pale yellow (2.5Y 7/3) dry; weak fine subangular blocky structure; slightly hard, very friable, nonsticky and nonplastic; common very fine, fine, medium, and coarse roots; 5 percent gravel; moderately acid (pH 6.0); abrupt smooth boundary.
Bw2--17 to 30 inches; light olive brown (2.5Y 5/4) sandy loam, pale yellow (2.5Y 7/3) dry; weak fine and medium subangular blocky structure; slightly hard, friable, nonsticky and nonplastic; common very fine and few fine, medium and coarse roots; 5 percent gravel; moderately acid (pH 5.8); abrupt wavy boundary. (Combined thickness of the Bw horizon is 17 to 33 inches)
Cr--30 inches; highly decomposed granodiorite.
TYPE LOCATION: Douglas County, Oregon, about 3 miles northeast of Lane Mountain and about 2500 feet north and 1600 feet east of the southwest corner of section 21, T. 27. S., R. 3 W. W.M. (Latitude 43 degrees, 12 minutes, 21 seconds N, Longitude 123 degrees, 3 minutes, 48 seconds W)
RANGE IN CHARACTERISTICS: The soils are usually moist and are dry for less than 45 consecutive days within all parts between depths of approximately 8 and 24 inches during the 4 month period following summer solstice. The mean annual soil temperature at a depth of 20 inches is 47 to 52 degrees F. Depth to a paralithic contact is 20 to 40 inches. The particle-size control section has 12 to 18 percent clay and 45 percent or more sand that is coarser than very fine sand.
The A horizon has hue of 10YR or 2.5Y, value of 3 or 4 moist, 5 or 6 dry, and chroma of 3 or 4 moist and dry. It has 0 to 5 percent gravel. It is moderately acid or slightly acid.
The Bw horizon has hue of 2.5Y, 10YR or 7.5YR, value of 4 or 5 moist, 6 or 7 dry, and chroma of 3 to 6 moist and dry. It is sandy loam or loam with 12 to 18 percent clay. It has 0 to 10 percent gravel. It is strongly acid to moderately acid. Base saturation by sum is 30 to 60 percent.
COMPETING SERIES: These are the Chadakoin, Chatfield, Maplecrest, and Valois series. Maplecrest, and Valois soils are over 60 inches deep to bedrock. Chatfield soils are 20 to 40 inches deep to a lithic contact. Chadakoin soils are over 40 inches deep to bedrock.
GEOGRAPHIC SETTING: Stinger soils are on mountain sideslopes. The soils formed in colluvium weathered from granitic rocks. Slopes are 60 to 90 percent. Elevations are 1200 to 3500 feet. The climate is characterized by warm, wet winters and hot, moist summers. The mean annual temperature is 45 to 50 degrees F, the mean annual precipitation is 50 to 70 inches, and the frost-free period is 100 to 170 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Buckshot, Lettia, Sitkum, Steinmetz, and Zing soils. Buckshot soils are greater than 40 inches deep and associated with Stinger soils on less steeply sloping, more stable positions. Lettia, Sitkum, Steinmetz, and Zing soils have a xeric moisture regime and are on adjacent south slopes. In addition, Lettia, Steinmetz and Zing soils are greater than 40 inches deep.
DRAINAGE AND PERMEABILITY: Somewhat excessively drained; moderately rapid permeability.
USE AND VEGETATION: Stinger soils are used for timber production and wildlife habitat. Native vegetation includes Douglas fir, western hemlock, bigleaf maple, western redcedar and Pacific madrone with an understory of salal, cascade Oregongrape, western swordfern, and common beargrass.
DISTRIBUTION AND EXTENT: Southwestern Oregon, MLRA 5. The series is of small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Davis, California
SERIES ESTABLISHED: Douglas County, Oregon, 1994.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric Epipedon
Cambic horizon - from 3 to 30 inches (Bw1 and Bw2 horizons)
Particle-size control section - from 10 to 30 inches
Base saturation is assumed to be less than 60 percent through out the soil profile.