LOCATION XASYA WA
Established Series
Rev. TLS/KDPL/KH/SBC
09/2019
XASYA SERIES
Landscape--plateaus, hills
Landform--broad ridgetops, hillslopes
Slope--0 to 20 percent
Parent material--residuum and colluvium derived from basalt
Mean annual precipitation--about 530 mm
Mean annual air temperature--about 10 degrees C
Depth class--shallow
Drainage class--well drained
Soil moisture regime--xeric
Soil temperature regime--mesic
Soil moisture subclass--typic
TAXONOMIC CLASS: Clayey, smectitic, mesic Lithic Ultic Argixerolls
TYPICAL PEDON: Xasya silt loam, stony surface, in an area of rangeland, on a 3-percent, north-facing slope at an elevation of 810 m (All textures are apparent field textures.)
A--0 to 13 cm; silt loam, brown (10YR 5/3) dry, dark brown (7.5YR 3/2) moist; moderate medium platy structure and strong fine granular; soft, very friable, nonsticky and nonplastic; many fine roots; common fine and very fine irregular pores; slightly acid (pH 6.3); clear wavy boundary
Bt1--13 to 25 cm; clay, brown (7.5YR 5/2) dry, dark brown (7.5YR 3/2) moist; moderate medium angular blocky structure parting to strong fine angular blocky; very hard, very firm, moderately sticky and very plastic; common fine roots; common very fine and few fine tubular pores; common distinct clay films on faces of peds and in openings of pores; 5 percent gravel; slightly acid (pH 6.5); clear wavy boundary
Bt2--25 to 36 cm; gravelly sandy clay loam, light brown (7.5YR 6/4) dry, brown (7.5YR 4/4) moist; moderate medium angular blocky structure parting to strong fine angular blocky; hard, very firm, moderately sticky and moderately plastic; few fine roots; common very fine and fine tubular pores; common prominent clay films on faces of peds and in openings of pores; 20 percent gravel; slightly acid (pH 6.5); abrupt smooth boundary
R--36 cm; basalt
TYPE LOCATION: Yakama Nation, Yakima County, Washington, about 4 km northeast of the Froghop Creek Guard Station; about 410 m north and 880 m west of the southeast corner of section 8, T. 9 N., R. 16 E.; latitude 46.2765526, longitude -120.8438603, datum WGS 84 (coordinates estimated from section, township, and range)
RANGE IN CHARACTERISTICS:
Mean annual soil temperature at lithic contact--9 to 10 degrees C
Soil moisture control section--usually moist, but dry in all parts 75 to 90 consecutive days following summer solstice
Thickness of mollic epipedon--20 to 25 cm
Depth to bedrock--25 to 50 cm
Rock fragment content in particle-size control section--5 to 25 percent
Clay content in particle-size control section--35 to 50 percent
Percentage of surface covered with rock fragments--10 to 50 percent
Reaction--5.6 to 7.3
A horizon
Hue--7.5YR, 10YR
Value--4 or 5 dry, 2 or 3 moist
Chroma--2 or 3 dry or moist
Texture--loam, silt loam
Rock fragment content--0 to 15 percent
Thickness--10 to 15 cm
Bt1 horizon
Hue--7.5YR, 10YR
Chroma--2 to 4 dry or moist
Texture of fine-earth fraction--loam, clay, clay loam
Rock fragment content--5 to 25 percent
Bt2 horizon
Hue--5YR, 7.5YR, 10YR
Value--5 or 6 dry, 3 or 4 moist
Chroma--2 to 4 dry or moist
Texture of fine-earth fraction--clay loam, sandy clay loam
Rock fragment content--5 to 25 percent
Combined thickness of Bt horizon--15 to 35 cm
COMPETING SERIES: None
GEOGRAPHIC SETTING:
Elevation--760 to 1075 cm
Slope--smooth, undulating
Climate--warm, dry summers; cool, moist winters
Mean annual air temperature--9 to 11 degrees C
Mean annual precipitation--460 to 710 mm
Frost-free season--100 to 140 days
GEOGRAPHICALLY ASSOCIATED SOILS:
Kusshi--on side slopes; no lithic contact within a depth of more than 150 cm; loamy-skeletal particle-size class
Rockly--on ridges and canyon side slopes; 10 to 30 cm (very shallow, shallow) to a lithic contact (basalt); loamy-skeletal particle-size class; no argillic horizon
Tekison--on mountainsides, ridges, and benches; no lithic contact within a depth of more than 150 cm; clayey-skeletal particle-size class
Waxpush--on plateaus and ridges; 15 to 25 cm (very shallow) to a lithic contact (basalt); loamy particle-size class; no argillic horizon
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class--well drained
Saturated hydraulic conductivity (Ksat)--moderately high
USE AND VEGETATION:
Use--dominantly livestock grazing and wildlife habitat
Native vegetation--bottlebrush squirreltail, big-hearted clover, buckwheat, narrowleaf goldenweed, Sandberg bluegrass, phlox
DISTRIBUTION AND EXTENT: Yakama Nation, Yakima County, south-central Washington; MLRA 6; small extent
SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Yakama Nation, Yakima County, Washington; 2014
REMARKS:
Diagnostic horizons and other features recognized in this pedon
*Mollic epipedon--zone from the surface to a depth of 25 cm
*Argillic horizon--zone from 13 to 36 cm
*Particle-size control section--zone from 13 to 36 cm
*Depth to lithic contact--36 cm
Xasya is the Yakama word for a celerylike plant, which is in the vicinity of the type location for this series. In 2007, the series originally was named the Froghop series.
National Cooperative Soil Survey
U.S.A.