LOCATION ODIN OREstablished Series
TAXONOMIC CLASS: Fine-loamy, mixed, superactive, mesic Aquic Haploxeralfs
TYPICAL PEDON: Odin sandy loam, pasture. (Colors are for moist soil unless otherwise noted.)
01--1 inch to 0; partly decomposed roots and stems of grasses and sedges.
A1--0 to 3 inches; dark gray (2.5Y 4/1) sandy loam, light gray (2.5Y 7/1) dry; few faint light olive brown (2.5Y 5/4) mottles; weak fine granular structure; slightly hard, friable, nonsticky and nonplastic; many very fine roots; many very fine irregular pores; 10 percent medium and coarse pumice sand; slightly acid (pH 6.5). (2 to 5 inches thick)
A3--3 to 9 inches; dark gray (2.5Y 4/1) sandy loam, light gray (2.5Y 7/1) dry; common distinct brown (7.5YR 4/3) mottles; massive; slightly hard, friable, nonsticky and nonplastic; many very fine roots; many very fine irregular pores; 10 percent medium and coarse pumice sand; neutral (pH 6.7). (4 to 8 inches thick)
B21t--9 to 20 inches; dark grayish brown (10YR 4/2) sandy clay loam, light brownish gray (10YR 6/2) dry; common fine faint dark gray (2.5Y 4/1) mottles; moderate medium subangular blocky structure; hard, friable, slightly sticky and slightly plastic; common very fine roots; many very fine tubular pores; few thin clay films; 10 percent medium and coarse pumice sand; few rounded firm nodules 1/2 inch in diameter; common black and red stains on faces of peds; neutral (pH 6.8). (5 to 12 inches thick)
B22t--20 to 45 inches; dark grayish brown (10YR 4/2) clay loam, light brownish gray (10YR 6/2) dry; few fine faint dark gray (2.5Y 4/1) mottles; moderate fine subangular blocky structure; hard, firm, sticky and plastic; few very fine roots; many very fine tubular pores; common thin and moderately thick clay films; few stains of iron and manganese; few very hard, rounded concretions 1/16 inch in diameter; 10 percent medium sand-sized pumice; neutral (pH 6.9). (15 to 30 inches thick)
Cr--45 to 60 inches; partly consolidated sandstone (Dalles formation).
TYPE LOCATION: Deschutes County, Oregon; southeast of Terrebonne in NE1/4 SE1/4 section 26, T. 14 S., R. 13 E.
RANGE IN CHARACTERISTICS: The mean annual soil temperature ranges from 47 to 50 degrees F. The soils are usually moist but are dry for 60 to 90 consecutive days within the four-month period following the summer solstice in most years in all parts of the soil between depths of 4 and 12 inches. Depth to the water table ranges from 3 to 4 feet during periods in the winter. The thickness of the solum ranges from 30 to 50 inches. Depth to bedrock is 40 to 60 inches. Mottles that have chroma of 2 or less are at depths of less than 30 inches and commonly are throughout the solum.
The A horizon has hue of 2.5Y or 10YR, value of 3 or 4 moist, 6 or 7 dry, and chroma of 1 or 2 dry and moist. It has weak platy or granular structure or is single grained or massive.
The B2 horizon has hue of 10YR or 2.5Y and chroma of 2 or 3 moist and dry. It is sandy clay loam or clay loam and has 20 to 35 percent clay and more than 15 percent coarser than very fine sand. It has moderate or strong subangular blocky structure. From 5 to 15 percent firm nodules or concretions are in the B2 horizon.
COMPETING SERIES: This is the Volke series. These soils have a fine textured horizon below the argillic horizon and within 40 inches of the surface.
GEOGRAPHIC SETTING: Odin soils are on depressions and small basins with no natural outlets at elevations of 2,000 to 3,600 feet. The soils formed in mixed alluvium high in ash and pumice. The climate is semiarid with an annual precipitation of 8 to 12 inches. Summers are warm and dry with an average temperature of 61 to 63 degrees F. Winters are cool and moist with an average temperature of 30 to 34 degrees F. The mean annual temperature is 45 to 48 degrees F. The frost-free period (32 degrees F.) is 100 to 130 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Deschutes, Madras, Stearns and Redmond soils. Deschutes soils are well drained, coarse-loamy, lack argillic horizons and are 20 to 40 inches deep to bedrock. Madras soils are well drained, have duripan and are 20 to 40 inches deep to bedrock. Stearns soils have natric horizons, are strongly sodic and have a duripan. Redmond soils are well drained and lack argillic horizons.
DRAINAGE AND PERMEABILITY: Somewhat poorly drained ponded or very slow runoff; moderately slow permeability.
USE AND VEGETATION: Principal use is for pasture. Other uses are for rangeland and wildlife. Native vegetation is mainly bunchgrasses, big sagebrush, rabbitbrush, sedges and cattails.
DISTRIBUTION AND EXTENT: Central Oregon; MLRA 10. They are inextensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Deschutes Area, Deschutes County, Oregon, 1946.
REMARKS: The series was inactivated in 1993. Upon update and investigation of the Upper Deschutes Soil Survey, less than 200 acres were originally mapped and polygons were less than 5 acres in size. Redox characteristics are irrigation induced. The type location is now mapped as the Redmond Series.