LOCATION SCAREDMAN               OR

Established Series
Rev. RGC/TDT
06/2011

SCAREDMAN SERIES

The Scaredman series consists of moderately deep, well drained soils on mountain sideslopes. They formed in colluvium and residuum derived dominantly from welded tuffs and flow basalts. Slopes range form 30 to 90 percent. The mean annual precipitation is about 70 inches and the mean annual temperature is about 43 degres F.

TAXONOMIC CLASS: Loamy-skeletal, isotic, frigid Typic Humudepts

TYPICAL PEDON: Scaredman extremely gravelly loam, forested. (Colors are for moist soil unless otherwise stated.)

Oi--0 to 1 inch; Slightly decomposed needles, twigs, and leaves.

A--1 to 11 inches; very dark grayish brown (10YR 3/2) extremely gravelly loam, brown (10YR 5/3) dry; weak fine granular structure; slightly hard, very friable, nonsticky and slightly plastic; many very fine, fine, and medium, and common coarse roots; common very fine irregular pores; 55 percent gravel and 10 percent cobbles; strongly acid (pH 5.4); clear smooth boundary. (6 to 11 inches thick)

Bw1--11 to 18 inches; dark brown (10YR 3/3) very gravelly loam, brown (10YR 5/3) dry; weak very fine subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; many very fine, fine, and medium, and common coarse roots; common fine irregular pores; 45 percent gravel and 5 percent cobbles; strongly acid (pH 5.4); clear wavy boundary. (4 to 9 inches thick)

Bw2--18 to 30 inches; dark yellowish brown (10YR 3/4) very gravelly loam, yellowish brown (10YR 5/4) dry; weak very fine subangular blocky structure; slightly hard, friable, moderately sticky and slightly plastic; many very fine, fine, and medium, and common coarse roots; common fine irregular pores; 40 percent gravel and 15 percent cobbles; very strongly acid (pH 4.8); abrupt smooth boundary. (9 to 21 inches thick)

R--30 inches; extrusive igneous rock.

TYPE LOCATION: Douglas County, Oregon; 1 1/2 miles east of Shirley Gap Lookout in the Western Cascade Mountains; 1,680 feet west and 1,995 feet south of the north east corner of section 33, T. 23 S., R. 2 W., W.M.

RANGE IN CHARACTERISTICS: These soils are usually moist but are dry for less than 45 consecutive days during the summer months. The mean annual soil temperature ranges from 42 to 47 degrees F. Depth to bedrock ranges from 20 to 40 inches. The umbric epipedon is 10 to 20 inches thick. The particle size control section averages 18 to 27 percent clay and has 35 to 60 percent coarse fragments. Hue is 10YR or 7.5YR

The A horizon has value of 2 or 3 moist, 4 or 5 dry and chroma of 2 or 3 moist and dry. Rock fragments range from 60 to 75 percent.

The Bw horizon has value of 3 or 4 moist, 5 through 7 dry, and chroma of 2 through 4 moist and dry. It has 35 to 50 percent gravel and 0 to 20 percent cobbles. It is very gravelly loam or very cobbly loam.

COMPETING SERIES: These are the Balsam, Illahee and Stackyards series. Balsam soils are over 40 inches deep to bedrock and contain gneiss and granitic rock fragments. Illahee soils are more than 60 inches to bedrock. Stackyards soils are 40 to 60 inches deep to bedrock.

GEOGRAPHIC SETTING: Scaredman soils are on mountain sideslopes at elevations of 2,800 to 4,600 feet. The soils formed in a variety of extrusive rock types. Slopes range from 30 to 90 percent. The soils are in a cold humid climate with annual precipitation of 60 to 80 inches. The mean annual temperature ranges from 40 to 45 degrees F. and the frost-free period is 50 to 100 days.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the competing Illahee soils, and the Limpy, and Mellowmoon soils. Limpy soils have a lithic contact at 10 to 20 inches. Mellowmoon soils are fine-loamy.

DRAINAGE AND PERMEABILITY: Well drained; moderately rapid permeability.

USE AND VEGETATION: These soils are used for timber porduction and wildlife habitat. The native vegetation includes Douglas fir, western hemlock, and western white pine. The understory vegetation is mainly vine maple, Pacific rhododendron, western swordfern, cascade Oregon grape, red huckleberry, western princes pine, and salal.

DISTRIBUTION AND EXTENT: Uplands of the Calapooya Divide within the western Cascades of Western Oregon. MLRA 3.

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon

SERIES ESTABLISHED: Douglas County, Oregon, 1994.

REMARKS: Diagnostic horizons and features recognized in this pedon are:

Umbric epipedon - The zone from 1 to 18 inches.

Cambic horizon - The zone from approximately 18 to 30 inches.

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National Cooperative Soil Survey
U.S.A.