LOCATION LANGRELL OR+IDEstablished Series
TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive, mesic Pachic Haploxerolls
TYPICAL PEDON: Langrell gravelly loam, hayland and pasture on a 2 percent slope at an elevation of 3,000 feet. (Colors are for moist soil unless otherwise noted.)
Ap--0 to 7 inches; very dark grayish brown (10YR 3/2) gravelly loam, grayish brown (10YR 5/2) dry; moderate fine granular structure; soft, friable, slightly sticky and slightly plastic; common fine and very fine roots; many very fine tubular and irregular pores; about 20 percent gravel; neutral (pH 7.0); abrupt smooth boundary. (6 to 10 inches thick)
Bw1--7 to 20 inches; dark brown (10YR 3/3) gravelly loam, brown (10YR 5/3) dry; weak fine subangular blocky structure; soft, friable, slightly sticky and slightly plastic; common fine roots; many very fine irregular pores; about 25 percent gravel and 5 percent cobbles; neutral (pH 7.0); gradual smooth boundary. (10 to 20 inches thick)
2Bw2--20 to 34 inches; dark brown (10YR 3/3) extremely cobbly loam, brown (10YR 5/3) dry; weak fine and medium subangular blocky structure; soft, friable, slightly sticky and slightly plastic; few fine roots; about 40 percent cobbles and 30 percent gravel; neutral (pH 7.0); gradual smooth boundary. (10 to 30 inches thick)
3C--34 to 60 inches; dark brown (7.5YR 3/2) very stony sandy loam, brown (10YR 4/3) dry; massive; soft, friable, nonsticky and nonplastic; about 15 percent stones, 25 percent cobbles, and 20 percent gravel; neutral (pH 6.8)
TYPE LOCATION: Baker County, Oregon; one mile north of the town of Langrell in Pine Valley; 1,250 feet south of NE corner, sec. 36, T. 7 S., R. 45 E. (Latitude 44 degrees, 55 minutes, 02 seconds N, Longitude 117 degrees, 08 minutes, 37 seconds W)
RANGE IN CHARACTERISTICS: These soils are usually moist but are dry for 60 to 80 consecutive days within the four month period following the summer solstice in most years. The mean annual soil temperature is 45 to 54 degrees F. The thickness of the solum is 20 to 50 inches. The thickness of the mollic epipedon is 20 to 40 inches. The 10 to 40 inch particle-size control section has 8 to 18 percent clay and averages 35 to 60 percent rock fragments. In some pedons, there are lime coatings on the underside of rock fragments at depths of 30 inches or more.
The A horizon and the Bw horizon has value of 2 or 3 moist and 4 or 5 dry, and chroma of 1 to 3 moist and dry. Texture of the fine-earth fraction is loam with 10 to 30 percent gravel, 0 to 20 percent cobbles, and 0 to 5 percent stones.
The 2Bw horizon has value of 2 to 4 moist, 4 to 6 dry and chroma of 1 to 3 moist and dry. Texture of the fine-earth fraction is sandy loam, loamy sand or loam with 20 to 50 percent gravel, 0 to 40 percent cobbles, and 0 to 10 percent stones. Total rock fragments range from 35 to 80 percent.
The 3C horizon has hue of 10YR or 7.5YR, value of 3 or 4 moist, 4 to 6 dry and chroma of 1 or 2 moist and dry. Texture of the fine-earth fraction is sandy loam or loamy sand with 20 to 60 percent gravel, 15 to 40 percent cobbles, and 0 to 15 percent stones. Total rock fragments range from 50 to 85 percent.
COMPETING SERIES: These are the Dehlinger, Demox, Drit, Gamboa, Murken, Packard, Plumas, Raster, Watterson, and Wrentham series. Dehlinger soils are dry for 90 to 120 consecutive days and have 18 to 30 percent clay in the pscs. Demox soils are dry for more than 90 consecutive days and have 35 to 60 percent angular shaped rock fragments of colluvial origin. Drit soils are dry for more than 80 consecutive days and have 40 to 75 percent angular shaped rock fragments of granitic colluvial origin. Gamboa soils have a mean annual soil temperature of 54 to 58 degrees F, are dry for more than 80 consecutive days, and are 40 to 60 inches to a lithic contact (sandstone). Murken soils are 20 to 40 inches to a lithic contact (basalt), dry for more than 80 consecutive days, and have 18 to 25 percent clay in the pscs. Packard soils have 25 t0 35 percent clay in the pscs. Plumas soils are dry for more than 80 consecutive days. Raster soils do not have cambic horizons. Watterson soils are dry for more than 80 consecutive days and do not have cambic horizons. Wrentham soils are 20 to 40 inches to a lithic contact (basalt).
GEOGRAPHIC SETTING: Langrell soils are on outwash terraces formed in glaciofluvial deposits. Slope is 0 to 3 percent. Elevation is 2,000 to 3,500 feet. The climate is characterized by cool wet winters and hot dry summers. The mean annual precipitation is 13 to 22 inches. The mean annual temperature is 45 to 54 degrees F. The frost-free period is 100 to 160 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Catherine, Halfway, and Hershal series. These soils are nonskeletal. Catherine soils are somewhat poorly drained and are fine-silty. Halfway soils are very fine. Hershal soils are poorly drained and are coarse-silty over sandy or sandy-skeletal.
DRAINAGE AND PERMEABILITY: Well drained; moderate permeability.
USE AND VEGETATION: Langrell soils are for small grain, alfalfa and grass. Potential native vegetation is mainly Idaho fescue, bluebunch wheatgrass and scattered ponderosa pine.
DISTRIBUTION AND EXTENT: Eastern Oregon and west-central Idaho, MLRA 9, 10. The soils are of small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Baker County Area, Oregon, 1945.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
mollic (pachic) epipedon - from the surface to 34 inches (Ap, Bw1, 2Bw2 horizons)
particle-size control section - from 10 to 40 inches.