LOCATION DEHLINGER OREstablished Series
TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive, mesic Pachic Haploxerolls
TYPICAL PEDON: Dehlinger very stony loam, rangeland. (Colors are for moist soil unless otherwise noted.)
A1--0 to 6 inches; very dark brown (10YR 2/2) very stony loam, grayish brown (10YR 5/2) dry; weak very fine and fine granular structure; soft, very friable, slightly sticky and slightly plastic; many very fine roots; many very fine pores; 45 percent stones, cobbles and pebbles; neutral (pH 7.2); clear wavy boundary. (4 to 8 inches thick)
A3--6 to 18 inches; very dark grayish brown (10YR 3/2) very gravelly clay loam, dark grayish brown (10YR 4/2) dry; weak fine subangular blocky structure; very friable, slightly sticky and slightly plastic; common very fine and few fine roots; many very fine tubular pores; 65 percent pebbles and cobbles; neutral (pH 7.2); clear wavy boundary. (0 to 14 inches thick)
B21--18 to 27 inches; dark brown (10YR 3/3) very gravelly clay loam, brown (10YR 5/3) dry; weak medium subangular blocky structure; friable, sticky and plastic; common very fine roots; many very fine tubular pores; 75 percent pebbles and cobbles; neutral (pH 7.2); gradual wavy boundary. (6 to 12 inches thick)
B22--27 to 53 inches; dark yellowish brown (10YR 4/4) very gravelly clay loam, brown (10YR 5/3) dry; weak fine subangular blocky structure; friable, sticky and plastic; common very fine roots; many very fine tubular pores; 70 percent pebbles and cobbles; mildly alkaline (pH 7.4); gradual wavy boundary. (7 to 33 inches thick)
IIB2b--53 to 70 inches; dark yellowish brown (10YR 3/4) very gravelly clay loam, yellowish brown (10YR 5/4) dry; moderate fine angular blocky structure; friable, sticky and plastic; common very fine roots; many very fine tubular pores; few thin clay films or cutans; mildly alkaline (pH 7.4).
TYPE LOCATION: Klamath Count, Oregon; about 6 miles south of Klamath Falls on northwest slope of Stukel Mountain; 2,500 feet west and 310 feet south of the NE corner of section 5, T.40S., R.10E.
RANGE IN CHARACTERISTICS: The mean annual soil temperature ranges from 47 degrees to 54 degrees F. The soils usually are moist Bt are dry at depths between 4 and 12 inches about 90 to 120 consecutive days in the four-month period following the summer solstice. Depth to bedrock is more than 60 inches. The mollic epipedon is 20 to 35 inches thick. Rock fragments in the A horizon range from 15 to 50 percent with 5 to 15 percent being cobbles and stones. Rock fragments in the 10- to 40-inch control section range from 35 to 75 percent with 0 to 25 percent being cobbles and stones. Rock fragments in the 10- to 40-inch control section range from 35 to 75 percent with 0 to 25 percent being cobbles and stones. The control section is loam or clay loam and averages 18 to 30 percent clay. The soils are neutral or mildly alkaline.
The A horizon has value of 2 or 3 moist, 4 or 5 dry, and chroma of 2 moist and 1 or 2 dry.
The B horizon has value of 3 or 4 moist, 4 through 6 dry, and chroma of 2 through 4 moist and dry.
COMPETING SERIES: These are the Calimus, Gamboa, Ginser, Glean, Packard and Wrentham series. Calimus soils have less than 10 percent rock fragments. Gamboa soils have a mean soil temperature of 54 degrees to 58 degrees F., and have loam or sandy loam control sections. Ginser soils have frigid soil temperature and have silty clay loam B2 horizons. Glean soils have frigid soil temperature and have sandy loam sola. Packard soils are slightly acid and are dry for 45 to 70 consecutive days. Wrentham soils have bedrock at depths of 20 to 40 inches.
GEOGRAPHIC SETTING: Dehlinger soils ar eon long, concave fault scarps at elevations of 4,100 to 6,000 feet. Slopes range from 15 to 65 percent. These soils formed in deep colluvium weathered from basalt tuff and andesite. The climate is semiarid with warm dry summers and cool moist winters. The mean annual precipitation is 12 to 16 inches. Mean January temperature is 27 degrees to 29 degrees F., the mean July temperature is 64 degrees to 69 degrees F., and the mean annual temperature is 46 degrees to 49 degrees F. The frost-free period is 90 to 120 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the competing Calimus soils and the Lorella, Stukel and Woodcock soils. Lorella and Stukel soils have bedrock at depths of 20 inches or less Lorella soils also have clayey argillic horizons. Woodcock soils on adjacent northerly slopes are crylic and have argillic horizons.
DRAINAGE AND PERMEABILITY: Well drained; medium runoff; moderately permeability.
USE AND VEGETATION: These soils are used for rangeland and for wildlife habitat. Vegetation is dominantly western juniper, big sagebrush, arrowleaf balsamroot, bluebunch wheatgrass and Thurber needlegrass.
DISTRIBUTION AND EXTENT: Fault scarps in south-central Oregon. The soils are extensive.
MLRA OFFICE RESPONSIBLE: Reno, Nevada
SERIES ESTABLISHED: Klamath County, Oregon, 1977.
REMARKS:
The superactive cation exchange activity class was added in 03/2003 to the taxonomic classification by the National Soil Survey Center on request of the Reno MLRA office, without review of the soil series property data. The remainder of this document has not been updated.