LOCATION GOODWIN OREstablished Series
TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive, frigid Humic Dystroxerepts
TYPICAL PEDON: Goodwin very stony sandy loam, on a north facing slope in a clearcut at 4,400 feet elevation. (When described the soil was moist throughout. Colors are for moist soils unless otherwise stated.)
O1--3 inches to 1 inch; undecomposed needles, leaves and twigs.
O2--1 inch to 0; black (10YR 2/1) highly decomposed litter.
A1--0 to 4 inches; very dark brown (10YR 2/2) very stony sandy loam, dark grayish brown (10YR 4/2) dry; weak very fine and fine granular structure; soft, very friable, nonsticky and nonplastic; many very fine and fine roots; many very fine pores; 45 percent pebbles, 5 percent cobbles, 10 percent stones; 2 percent of surface covered with stones; medium acid; clear wavy boundary. (2 to 10 inches thick)
A3--4 to 16 inches; dark brown (10YR 3/3) very gravelly sandy loam, brown (10YR 5/3) dry; weak fine subangular blocky structure parting to weak fine granular; soft, very friable, nonsticky and nonplastic; common very fine and fine roots; many very fine pores; 45 percent pebbles, 10 percent cobbles, 5 percent stones; medium acid; gradual wavy boundary. (0 to 16 inches thick)
B2--16 to 40 inches; dark brown (10YR 4/3) extremely gravelly sandy loam, pale brown (10YR 6/3) dry; weak fine subangular blocky structure parting to weak fine granular; soft, very friable, nonsticky and nonplastic; few very fine and fine roots; many very fine and fine pores; 40 percent pebbles, 15 percent cobbles, 15 percent stones; medium acid; gradual wavy boundary. (12 to 34 inches thick)
C1--40 to 55 inches; olive brown (2.5Y 4/4) very gravelly sandy loam, pale brown (10YR 6/3) dry; massive; soft, friable, slightly sticky and slightly plastic; few very fine, fine and coarse roots; many very fine pores; 45 percent pebbles, 10 percent cobbles, 5 percent stones; medium acid; abrupt wavy boundary. (10 to 24 inches thick)
C2r--55 to 66 inches; highly decomposed grus from quartz diorite.
TYPE LOCATION: Josephine County, Oregon; about 11 miles east of Holland; 420 feet south and 360 feet east of the northwest corner of section 32, T.39S., R.5W.
RANGE IN CHARACTERISTICS: Solum thickness ranges from 32 to 52 inches. Depth to a paralithic contact is 40 to 60 inches. The mean annual soil temperature ranges from 42 to 47 degrees F. These soils are usually moist but are dry between depths of 8 and 24 inches for 45 to 60 consecutive days in the four months that follow the summer solstice. The 10 to 40 inch control section has less than 18 percent clay and averages 35 to 80 percent rock fragments of which 5 to 35 percent are cobbles and stones. The umbric epipedon is 10 to 20 inches thick.
The A horizon has value of 2 or 3 moist, 4 or 5 dry, and chroma of 1 through 3 moist and 2 or 3 dry.
The B horizon has hue of 7.5YR or 10YR, value of 3 or 4 moist, 5 or 6 dry, and chroma of 3 or 4 moist and dry. It is loam or sandy loam and averages more than 35 percent rock fragments.
The C horizon has hue of 10YR or 2.5Y, value of 3 or 4 moist, and chroma of 3 or 4 moist. It is loam or sandy loam and averages 35 to 50 percent pebbles and 10 to 30 percent cobbles and stones.
COMPETING SERIES: These are the Bindle and Nanny series. Bindle soils are 20 to 40 inches deep to a lithic contact. Nanny soils have a heavy loam B horizon with more than 18 percent clay and are deeper than 60 inches to bedrock.
GEOGRAPHIC SETTING: Goodwin soils are on mountain sideslopes and are at elevations of 3,600 to 5,500 feet. Slopes range from 5 to 80 percent. This soil formed in colluvium weathered from granitic rocks. The mean annual temperature ranges from 40 to 45 degrees F.; and the mean annual precipitation ranges from 50 to 70 inches. The frost free period is less than 100 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Althouse, Bigelow, Crannler, Jayar, Rogue, Skymor, Tethrick and Woodseye soils. Althouse, Jayar, Rogue, Skymor and Tethrick soils lack an umbric epipedon. Bigelow soils have a cryic soil temperature and have an epipedon thicker than 20 inches. Crannler soils are 20 to 40 inches deep to bedrock and have a cryic soil temperature. Woodseye soils are 12 to 20 inches deep to a lithic contact.
DRAINAGE AND PERMEABILITY: Well drained, medium to rapid runoff; moderately rapid permeability.
USE AND VEGETATION: Goodwin soils are used for wildlife habitat, timber production, recreation, water supply and grazing. Natural vegetation is mainly white fir, shasta red fir, Douglas fir, rhododendron, princes pine, Cascade Oregon grape, deerfoot vanillaleaf, broadleaf starflower, twinflower and sedge.
DISTRIBUTION AND EXTENT: Southwestern Oregon. The series is moderately extensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Davis, California
SERIES ESTABLISHED: Josephine County, Oregon, 1979.
ADDITIONAL DATA: Characterization data for one pedon (95U (1-5) from Oregon State University.