LOCATION TAUNTON                 WA+ID OR UT

Established Series
Rev. JJR/KWH/TLA
09/2019

TAUNTON SERIES

Landscape--plateaus
Landform--structural benches, fan terraces, mesas
Slope--0 to 45 percent
Parent material--alluvium
Mean annual precipitation--about 200 mm
Mean annual air temperature--about 10 degrees C
Depth class--moderately deep to a duripan
Drainage class--well drained
Soil moisture regime--aridic
Soil temperature regime--mesic
Soil moisture subclass--xeric

TAXONOMIC CLASS: Coarse-loamy, mixed, superactive, mesic Xeric Haplodurids

TYPICAL PEDON: Taunton fine sandy loam, cultivated

Ap--0 to 13 cm; fine sandy loam, light brownish gray (10YR 6/2) dry, dark grayish brown (10YR 4/2) moist; weak fine granular structure; soft, very friable, nonsticky and nonplastic; common roots; moderately alkaline (pH 8.0); abrupt smooth boundary

Bw--13 to 46 cm; fine sandy loam, pale brown (10YR 6/3) dry, brown (10YR 4/3) moist; weak medium subangular blocky structure; soft, very friable, nonsticky and nonplastic; common roots; few very fine tubular pores; moderately alkaline (pH 8.0); clear wavy boundary

Bkq--46 to 61 cm; gravelly fine sandy loam, pale brown (10YR 6/3) dry, brown (10YR 4/3) moist; massive; soft, very friable, nonsticky and nonplastic; common roots; few very fine tubular pores; 20 percent lime- and silica-cemented gravel-sized fragments; strongly effervescent; strongly alkaline (pH 8.6); abrupt smooth boundary

2Bkqm--61 cm; very pale brown (10YR 8/2) indurated duripan; thin smooth laminar cap on surface; violently effervescent in laminar cap and matrix

TYPE LOCATION: Adams County, Washington, about 75 m south and 15 m east of the center of the NW1/4 of section 16, T. 15 N., R. 28 E.; Willamette Meridian

RANGE IN CHARACTERISTICS:
Mean annual soil temperature--11 to 13 degrees C
Soil moisture--dry in all parts between depths of 20 and 60 cm, or to the duripan, more than one-half the time when the soil temperature is higher than 5 degrees C (about 105 to 135 days)
Depth to secondary carbonates (calcic horizon)--25 to 64 cm
Depth to indurated duripan--50 to 100 cm

Ap horizon
Value--5 or 6 dry, 3 or 4 moist
Chroma--2 to 4 dry or moist
Structure--granular, subangular blocky
Thickness--8 to 23 cm

Bw horizon
Value--5 to 8 dry, 3 to 6 moist
Chroma--2 to 4 dry or moist
Texture--silt loam, loam, very fine sandy loam, sandy loam, fine sandy loam
Reaction--7.4 to 8.4
Thickness--15 to 48 cm

Bkq horizon
Hue--2.5Y, 10YR
Value--5 to 8 dry, 3 to 6 moist
Chroma--1 to 4
Texture--silt loam, loam, sandy loam, fine sandy loam, very fine sandy loam
Content of gravel-sized, lime- and silica-cemented fragments--0 to 35 percent
Reaction--7.4 to more than 9.0
Calcium carbonate content--15 to 25 percent
Thickness--15 to 51 cm

COMPETING SERIES:
Doel--no carbonates above a duripan; sand below duripan
Jestrick--65 to 100 cm (moderately deep) to a lithic contact (basalt)
Ticeska--58 to 100 cm (moderately deep) to a lithic contact (basalt)
Oupico--calcareous throughout cambic horizon
Shalake--average of 15 to 35 percent rock fragments in particle-size control section
Tauncal--calcareous to the surface in areas mixed to a depth of 20 cm

GEOGRAPHIC SETTING:
Elevation--60 to 670 m in Washington and Oregon; dominantly 910 to 1525 m in Idaho, but ranges to 1675 m on south- and west-facing slopes
Climate--arid; hot, dry summers; cool, moist winters
Mean annual precipitation--150 to 310 mm
Mean January air temperature--about -2 degrees C
Mean July air temperature--about 22 degrees C
Mean annual air temperature--about 9 to 12 degrees C
Frost-free season--135 to 210 days in Washington and Oregon, 100 to 140 days in Idaho

GEOGRAPHICALLY ASSOCIATED SOILS:
Paulville, Royal--no duripan
Scoon--25 to 50 cm (shallow) to a duripan
Wiehl--no duripan; 50 to 100 cm (moderately deep) to a paralithic contact (sandstone)

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class--well drained
Saturated hydraulic conductivity (Ksat)--moderately high above the duripan

USE AND VEGETATION:
Use--livestock grazing, irrigated crop production
Native vegetation--Wyoming big sagebrush, bluebunch wheatgrass, Thurber needlegrass, Sandberg bluegrass, buckwheat, gray rabbitbrush

DISTRIBUTION AND EXTENT: South-central Washington, north-central Oregon, and southern Idaho; MLRAs 7, 8, and 11; moderate extent

SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Portland, Oregon

SERIES ESTABLISHED: Walla Walla County, Washington; 1960

REMARKS:
Diagnostic horizons and other features recognized in this pedon
*Ochric epipedon
*Cambic horizon--zone from 13 to 46 cm
*Calcic horizon--zone from 46 to 61 cm
*Depth to duripan--61 cm
*Particle-size control section--zone from 25 to 61 cm

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National Cooperative Soil Survey
U.S.A.