LOCATION STACKER WAEstablished Series
TAXONOMIC CLASS: Fine-loamy, mixed, superactive, mesic Ultic Argixerolls
TYPICAL PEDON: Stacker silt loam- rangeland, on a 4 percent south-facing slope at an elevation of 1,275 feet. (Colors are for dry soil unless otherwise noted. All textures are apparent field textures.)
A1--0 to 6 inches; brown (10YR 4/3) silt loam, very dark grayish brown (10YR 3/2) moist; weak very fine and fine granular structure; slightly hard, friable, slightly sticky and slightly plastic; many very fine and few fine roots; many fine irregular pores; neutral (pH 6.8); clear smooth boundary.
A2--6 to 18 inches; brown (10YR 4/3) silt loam, dark brown (10YR 3/3) moist; weak fine and medium subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; common very fine and few fine roots; many fine irregular pores; slightly acid (pH 6.4); abrupt smooth boundary. (Combined thickness of the A horizon is 12 to 20 inches)
Bt--18 to 28 inches; brown (10YR 5/3) silty clay loam, dark yellowish brown (10YR 3/4) moist; moderate fine and medium subangular blocky structure; hard, firm, moderately sticky and moderately plastic; common very fine roots; common fine irregular and tubular pores; common distinct clay films on faces of peds and lining pores; slightly acid (pH 6.2); abrupt smooth boundary. (8 to 20 inches thick)
2R--28 inches; basalt bedrock
TYPE LOCATION: Klickitat County, Washington; 5 miles northeast of The Dalles, Oregon; about 1,375 feet south and 2,500 feet west of the northeast corner of sec. 7, T.2N., R.14E. (Latitude 45 degrees, 40 minutes, 39 seconds N. and Longitude 121 degrees, 06 minutes, 06 seconds W.)
RANGE IN CHARACTERISTICS: The mean annual soil temperature is 50 to 54 degrees F. These soils are usually moist, but are dry in the moisture control section for 90 to 105 consecutive days following the summer solstice. Solum thickness and depth to bedrock ranges from 20 to 40 inches. Clay content in the particle-size control section averages from 20 to 30 percent and rock fragments from 0 to 5 percent. Reaction is slightly acid or neutral throughout. The mollic epipedon is 12 to 20 inches thick.
The A horizon has hue of 10YR or 7.5YR, value of 2 or 3 moist, 4 or 5 dry and chroma of 2 or 3 moist, 3 or 4 dry.
The Bt horizon has hue of 10YR or 7.5YR, value of 3 or 4 moist, 5 or 6 dry and chroma of 3 or 4 moist or dry. Texture is silt loam, silty clay loam, or clay loam.
COMPETING SERIES: These are the
Annum,
Brownlee,
Chirpchatter,
Crazycoyote (T), Dryfalls (T),
Ebadlow,
Felton,
Fisherhill,
Goldendale,
Hellake,
Lompico,
Lorena,
Meland,
Mendian (T),
Meystre,
Quiden,
Rehfield,
Robbscreek,
Schumacher,
Stardust,
Updegraff and
Van Horn series.
Annum soils 40 to 60 inches to a paralithic contact (granodiorite)
Brownlee soils 40 to more than 60 inches to a paralithic contact (granodiorite); slightly to moderately high in mica; dry for 60 to 90 consecutive days following the summer solstice
Chirpchatter soils greater than 60 inches to bedrock; dry about 125 consecutive days following the summer solstice
Crazycoyote soils unable to compete as it is not presently in the OSD database
Dryfalls soils 40 to 60 inches to a lithic contact (basalt); dry for 60 to 75 consecutive days following the summer solstice; pscs with weighted average rock fragments of 15 to 35 percent
Ebadlow soils greater than 60 inches to bedrock; depth to skeletal material is 25 to 35 inches to skeletal material (discontinuity)
Felton soils - 40 to 60 inches to a paralithic contact (shale); dry for more than 105 consecutive days following the summer solstice; MAST of 56 degrees F.
Fisherhill soils greater than 60 inches to bedrock
Hellake soils greater than 60 inches to bedrock; dry for 60 to 90 consecutive days following the summer solstice
Lompico soils 20 to 40 inches to a paralithic contact (sandstone); mean annual soil temperature of 56 to 58 degrees F.; dry for more than 105 consecutive days
Lorena soils dry for 75 to 90 consecutive days following the summer solstice
Meland soils dry for 45 to 70 consecutive days following the summer solstice
Mendian soils greater than 60 inches to bedrock; have a skeletal discontinuity in the lower part of the argillic horizon (3Btb); pscs with 50 to 70 percent sand
Meystre soils greater than 60 inches to bedrock; dry for 60 to 75 consecutive days following the summer solstice
Quiden soils greater than 60 inches to bedrock; dry for 60 to 75 consecutive days following the summer solstice; pscs with 10 to 20 percent rock fragments
Rehfield soils 40 to greater than 60 inches to a lithic contact (basalt); dry for 90 to 120 consecutive days following the summer solstice; have more than 45 percent sand coarser than very fine sand
Robbscreek soils 20 to 40 inches to a lithic contact (granodiorite); dry for 60 to 90 consecutive days following the summer solstice; pscs with 15 to 35 percent rock fragments
Schumacher soils 40 to 60 inches to a lithic contact (metasediments); dry for 45 to 60 consecutive days following the summer solstice
Stardust soils greater than 60 inches to bedrock; pscs with more than 5 percent rock fragments and more than 25 percent medium sand or coarser
Updegraff soils 40 to 60 inches to a lithic contact (schist or greywacke)
Van Horn soils greater than 60 inches to bedrock; dry for 60 to 80 consecutive days following the summer solstice; mica fragments throughout
GEOGRAPHIC SETTING: Stacker soils are on plateaus, hillslopes, footslopes, and benches at elevations of 250 to 3,200 feet. Slopes are 2 to 65 percent. These soils formed in loess over basalt. Summers are warm and dry and winters are cool and moist. The mean annual precipitation is 12 to 15 inches. The average January temperature is 33 degrees F. and the average July temperature is 63 degrees F. The mean annual temperature is 48 to 52 degrees F. The frost-free season is 120 to 170 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Fisherhill, Lickskillet and Walla Walla soils. Fisherhill soils are on side slopes and benches and are very deep. Lickskillet soils are on uplands, are shallow and have more than 35 percent rock fragments in the particle-size control section. Walla Walla soils are on terraces and are coarse-silty.
DRAINAGE AND PERMEABILITY: Well drained; slow to very rapid runoff; moderate permeability.
USE AND VEGETATION: These soils are used mainly for livestock grazing, crop production, and wildlife habitat. Native vegetation is mainly bluebunch wheatgrass, Idaho fescue, yarrow, and fiddleneck.
DISTRIBUTION AND EXTENT: Klickitat County, Washington. MLRA 8. The series is of moderate extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Klickitat County, Washington, 2003. Name is from Stacker Butte in Klickitat County, WA.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Mollic epipedon - the zone from 0 to 18 inches
Argillic horizon - the zone from 18 to 28 inches
Lithic contact - the zone beginning at 28 inches
Particle-size control section - the zone from 18 to 28 inches (Bt horizon).