LOCATION KINGTAIN WA
Established Series
Rev. MEH/RJE/TLA/RWL
09/2019
KINGTAIN SERIES
Landscape--mountains
Landform--mountain slopes
Slope--8 to 80 percent
Parent material--volcanic ash and colluvium derived from basalt
Mean annual precipitation--about 1300 mm
Mean annual air temperature--about 5 degrees C
Depth class--very deep
Drainage class--well drained
Soil moisture regime--xeric
Soil temperature regime--frigid
Soil moisture subclass--typic
TAXONOMIC CLASS: Ashy-skeletal, amorphic, frigid Alfic Humic Vitrixerands
TYPICAL PEDON: Kingtain gravelly ashy loam, forested, on a 30-percent, southeast-facing backslope at an elevation of 875 m (All textures are apparent field textures.)
A1--0 to 13 cm; gravelly ashy loam, brown (10YR 4/3) dry, dark brown (7.5YR 3/2) moist; weak very fine granular structure parting to weak fine granular; soft, very friable, nonsticky and nonplastic; weakly smeary; many very fine and fine roots throughout; many very fine interstitial pores; 20 percent gravel; slightly acid (pH 6.4); clear smooth boundary
A2--13 to 38 cm; gravelly ashy loam, brown (10YR 5/3) dry, dark brown (7.5YR 3/3) moist; weak fine granular structure; soft, very friable, nonsticky and nonplastic; weakly smeary; many very fine and common medium roots throughout; many fine interstitial pores; 20 percent gravel and 5 percent cobbles; slightly acid (pH 6.4); clear smooth boundary
AB--38 to 66 cm; very gravelly ashy loam, yellowish brown (10YR 5/4) dry, dark brown (7.5YR 3/4) moist; weak very fine subangular blocky structure parting to weak fine subangular blocky; soft, very friable, nonsticky and nonplastic; weakly smeary; common very fine and few coarse roots throughout; many fine interstitial and common fine tubular pores; 30 percent gravel and 10 percent cobbles; slightly acid (pH 6.2); clear wavy boundary
BA--66 to 124 cm; very gravelly ashy loam, yellowish brown (10YR 5/4) dry, brown (7.5YR 4/4) moist; weak fine subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; common very fine and few medium roots throughout; common fine tubular pores; 30 percent gravel, 15 percent cobbles, and 5 percent stones; slightly acid (pH 6.2); clear wavy boundary
2Bt1--124 to 142 cm; extremely cobbly loam, light yellowish brown (10YR 6/4) dry, brown (7.5YR 4/4) moist; weak fine subangular blocky structure parting to weak medium subangular blocky; slightly hard, friable, slightly sticky and slightly plastic; few very fine and medium roots between peds; common fine tubular pores; few faint clay films in root channels and pores; 50 percent gravel and 25 percent cobbles; slightly acid (pH 6.2); gradual wavy boundary
2Bt2--142 to 178 cm; extremely cobbly loam, light yellowish brown (10YR 6/4) dry, brown (7.5YR 4/4) moist; weak fine subangular blocky structure parting to weak medium subangular blocky; slightly hard, friable, slightly sticky and slightly plastic; few fine and medium roots between peds; common fine tubular pores; few faint clay films in root channels and pores; 50 percent gravel and 25 percent cobbles; moderately acid (pH 6.0)
TYPE LOCATION: Klickitat County, Washington, about 9.7 km south of Trout Lake; about 120 m north and 610 m west of the southeast corner of section 15, T. 5 N., R. 10 E.; latitude 45 degrees, 54 minutes, 50 seconds north and longitude 121 degrees, 32 minutes, 10 seconds west
RANGE IN CHARACTERISTICS:
Mean annual soil temperature--4 to 8 degrees C
Moisture control section--dry in all parts 45 to 60 consecutive days during the 4 months following summer solstice in 6 years or more out of 10 years
Thickness of volcanic ash influence and depth to top of argillic horizon--100 to 125 cm
Content of basalt fragments in particle-size control section--35 to 65 percent
Thickness of umbric epipedon--25 to 45 cm
0- to 100-cm particle-size control section
*Moist bulk density--0.8 to 0.9 g/cm3
*Volcanic glass content--5 to 30 percent
*Acid oxalate extractable aluminum plus one-half iron--2 to 4 percent
*Phosphate retention--70 to 98 percent
*15-bar water retention--8 to 12 percent
A horizon
Hue--5YR to 10YR
Value--3 to 5 dry, 2 or 3 moist
Chroma--2 to 4 dry, 2 or 3 moist
Reaction--5.6 to 7.3
Combined thickness--23 to 46 cm
AB horizon
Hue--7.5YR, 10YR
Value--5 or 6 dry, 3 or 4 moist
Texture--very gravelly ashy loam, very cobbly ashy loam
Reaction--6.1 to 7.3
Thickness--36 to 71 cm
BA horizon
Hue--7.5YR, 10YR
Value--5 or 6 dry, 3 or 4 moist
Texture--very cobbly ashy loam, extremely gravelly ashy loam, very gravelly loam
Gravel content--20 to 50 percent
Cobble content--5 to 20 percent
Stone content--0 to 5 percent
Reaction--6.1 to 7.3
Thickness--30 to 61 cm
2Bt horizon
Hue--7.5YR, 10YR
Value--5 or 6 dry, 3 or 4 moist
Chroma--3 or 4 moist or dry
Texture--very gravelly loam, extremely cobbly loam, very cobbly loam, extremely gravelly loam
Gravel content--35 to 50 percent
Cobble and stone content--5 to 30 percent
Reaction--5.6 to 7.3
COMPETING SERIES: None
GEOGRAPHIC SETTING:
Elevation--490 to 1300 m
Climate--cool, dry summers; cold, wet winters; snow cover in November through May
Mean annual precipitation--1150 to 1400 mm
Mean January air temperature--about -6 degrees C
Mean July air temperature--about 16 degrees C
Mean annual air temperature--about 3 to 7 degrees C
Frost-free season--65 to 90 days
GEOGRAPHICALLY ASSOCIATED SOILS:
Bercumb--coarse-loamy; on mountain slopes
Firoke--no argillic horizon; on mountain slopes
Flotag--coarse-loamy; on terraces
Sugarbowl--ashy; no argillic horizon; on terraces
Volash--ashy; no argillic horizon; on mountain slopes
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class--well drained
Saturated hydraulic conductivity (Ksat)--moderately high
USE AND VEGETATION:
Use--mainly timber production, livestock grazing, and wildlife habitat
Vegetation--mainly grand fir, Douglas-fir, vine maple, western hazel, pachystima, prince's pine, trillium, common snowberry, rose, and Oregon grape
DISTRIBUTION AND EXTENT: East slopes of the Cascade Mountains in northwest Klickitat County and King Mountain area in southwest Yakima County, Washington; MLRA 6; small extent
SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Klickitat County, Washington; 2003
REMARKS:
Diagnostic horizons and other features recognized in this pedon
*Umbric epipedon--zone from the surface to a depth of 38 cm
*Argillic horizon--zone from 124 to 178 cm
*Andic soil properties--zone from the surface to a depth of 124 cm
*Particle-size control section--zone from the surface to a depth of 100 cm; ashy in zone from the surface to a depth of 38 cm and ashy-skeletal in zone from 38 to 100 cm; ashy-skeletal family class based on thickest cumulative layer
ADDITIONAL DATA:
Partial laboratory data--pedon number 78P0259, National Soil Survey Laboratory, Lincoln, Nebraska
National Cooperative Soil Survey
U.S.A.