LOCATION TIGIT WA
Established Series
Rev. AG/TLA/RJE/RWL
09/2019
TIGIT SERIES
Landscape--plateaus, hills
Landform--structural benches, hillslopes
Slope--2 to 30 percent
Parent material--residuum and colluvium derived from basalt and a minor amount of volcanic ash in upper part
Mean annual precipitation--about 760 mm
Mean annual air temperature--about 8 degrees C
Depth class--moderately deep
Drainage class--well drained
Soil moisture regime--xeric
Soil temperature regime--mesic
Soil moisture subclass--typic
TAXONOMIC CLASS: Fine-loamy, mixed, superactive, mesic Ultic Haploxeralfs
TYPICAL PEDON: Tigit ashy loam, forested, on an 8-percent, southwest-facing slope at an elevation of 670 m (All textures are apparent field textures.)
Oi--0 to 4 cm; slightly decomposed needles, leaves, and twigs
A--4 to 10 cm; ashy loam, brown (7.5YR 5/2) dry, dark reddish brown (5YR 3/2) moist; weak fine granular structure; soft, very friable, slightly sticky and nonplastic; weakly smeary; many very fine and fine roots; many very fine irregular pores; 10 percent gravel and 5 paragravel; slightly acid (pH 6.2); clear smooth boundary
AB--10 to 18 cm; ashy loam, light reddish brown (5YR 6/3) dry, dark reddish brown (5YR 3/3) moist; weak fine subangular blocky structure parting to coarse granular; slightly hard, friable, slightly sticky and nonplastic; weakly smeary; many very fine, common fine, and few medium roots; many fine irregular pores; 5 percent paragravel; slightly acid (pH 6.2); clear wavy boundary
BA--18 to 41 cm; loam, light brown (7.5YR 6/4) dry, dark reddish brown (5YR 3/4) moist; weak fine subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; common very fine and fine and few coarse roots; many fine irregular pores; 5 percent paragravel; slightly acid (pH 6.2); clear smooth boundary
Bt1--41 to 79 cm; loam, light brown (7.5YR 6/4) dry, dark reddish brown (5YR 3/4) moist; weak medium subangular blocky structure; hard, firm, slightly sticky and slightly plastic; common very fine and fine roots; many very fine irregular pores; few faint clay films on faces of peds and in pores; 5 percent paragravel; moderately acid (pH 6.0); clear wavy boundary
Bt2--79 to 99 cm; very paragravelly loam, light brown (7.5YR 6/4) dry, dark reddish brown (5YR 3/4) moist; weak medium subangular blocky structure; hard, firm, slightly sticky and slightly plastic; common very fine and fine and few medium roots; many fine irregular and tubular pores; few faint clay films on faces of peds and in pores; 35 percent paragravel, 5 percent cobbles, and 5 percent stones; moderately acid (pH 6.0); clear smooth boundary
Cr--99 cm; weathered basalt; few fine roots; 25 percent cobbles and stones
TYPE LOCATION: Klickitat County, Washington, about 8 km northwest of Klickitat; about 850 m north and 60 m west of the southeast corner of section 1, T. 4 N., R. 12 E.; latitude 45 degrees, 51 minutes, 43 seconds north and longitude 121 degrees, 14 minutes, 20 seconds west
RANGE IN CHARACTERISTICS:
Mean annual soil temperature--8 to 11 degrees C
Moisture control section--dry in all parts 60 to 75 consecutive days during the 4 months following summer solstice in 6 years or more out of 10 years
Depth to the paralithic contact--50 to 100 cm
Reaction--5.6 to 6.5 throughout
Layer of volcanic ash influence
*Thickness--5 to 15 cm
*Estimated glass content--5 to 10 percent
*Acid oxalate extractable Al plus 1/2 Fe--0.4 to 1.0 percent
Particle-size control section
*Average clay content--18 to 25 percent clay
*Pararock fragments content--5 to 45 percent
*Gravel content--0 to 20 percent
*Cobble and stone content--0 to 15 percent
A horizon
Hue--5YR, 7.5YR
Value--5 or 6 dry
Chroma--2 to 4 dry, 2 or 3 moist
Thickness--3 to 10 cm
AB and BA horizons
Hue--5YR, 7.5YR
Value--5 or 6 dry
Chroma--3 or 4 dry or moist
Texture of AB horizon--ashy loam, gravelly ashy loam
Texture of BA horizon--loam, gravelly loam
Thickness of AB horizon--3 to 10 cm
Thickness of BA horizon--10 to 25 cm
Bt horizon
Hue--5YR, 7.5YR
Value--3 or 4 moist
Clay films--few to many; faint to prominent
Texture--loam, cobbly loam, gravelly loam, very paragravelly loam
Combined thickness--53 to 77 cm
COMPETING SERIES:
Beal--no paralithic or lithic contact within a depth of more than 150 cm; dry 45 to 60 consecutive days following summer solstice
Boardburn--100 to 150 cm (deep) to a paralithic contact (andesitic tuff); dry 110 to 130 consecutive days following summer solstice
Boomer--100 to 200 cm (deep, very deep) to a paralithic contact (greenstone); dry 105 to 130 consecutive days following summer solstice
Casabonne--100 to 150 cm (deep) to a lithic contact (sandstone, shale); dry 90 to 120 consecutive days following summer solstice
Cherryhill--100 to 150 cm (deep) to a paralithic contact (sandstone); mean annual soil temperature of 12 to 13 degrees C
Cle Elum--dry 75 to 90 consecutive days following summer solstice
Crozier--dry 120 to 150 consecutive days following summer solstice
Dalig--no paralithic or lithic contact within a depth of more than 150 cm; no ash influence
Fives--no paralithic or lithic contact within a depth of more than 150 cm; dry 75 to 110 days following summer solstice
Fong--100 to 150 cm (deep) to a lithic contact (schist); dry 90 to 120 consecutive days following summer solstice
Fordcreek--100 to 150 cm (deep) to a paralithic contact (granitic or metamorphic rock); dry 75 to 110 consecutive days following summer solstice
Gunn--100 to 150 cm or more (deep, very deep) to a lithic contact (basalt); dry 90 to 105 consecutive days following summer solstice
Hood--no paralithic or lithic contact within a depth of more than 150 cm; mean annual soil temperature of 11 to 12 degrees C
Katykat--no paralithic contact within a depth of more than 150 cm
Latourell--no paralithic or lithic contact within a depth of more than 150 cm; mean annual soil temperature of 12 to 13 degrees C
Lettia--100 to 150 cm (deep) to a paralithic contact (granite, granodiorite); dry 45 to 60 consecutive days following summer solstice
Norling--dry 45 to 60 consecutive days following summer solstice
Para--no paralithic or lithic contact within a depth of 150 cm; dry 45 to 60 consecutive days following summer solstice
Pishpishee--no paralithic or lithic contact within a depth of more than 150 cm; dry 80 to 100 consecutive days following summer solstice
Rosehaven--no paralithic or lithic contact within a depth of more than 150 cm; dry 45 to 60 consecutive days following summer solstice; mean annual soil temperature of 11 to 14 degrees C
Sanhedrin--100 to 150 cm (deep) to a lithic contact (sandstone, shale, siltstone); dry 90 to 120 consecutive days following summer solstice
Varelum--100 to 150 cm (deep) to a paralithic contact (sandstone)
Wohly--no paralithic or lithic contact within a depth of more than 150 cm; dry 90 to 120 consecutive days; mean annual soil temperature of 12 to 15 degrees C
GEOGRAPHIC SETTING:
Elevation--490 to 760 m
Climate--warm, dry summers; cool, wet winters
Mean annual precipitation--640 to 890 mm
Mean January air temperature--about -3 degrees C
Mean July air temperature--about 18 degrees C
Mean annual air temperature--about 7 to 9 degrees C
Frost-free season--110 to 130 days
GEOGRAPHICALLY ASSOCIATED SOILS:
Dalig--on hillsides, plateaus, and benches
Fanal--mollic epipedon; on toeslopes
Kaiders--loamy-skeletal; on mountains and foothills
McGowan--no paralithic or lithic contact within a depth of more than 150 cm; ash influence in upper part; on plateaus
Para--on plateaus
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class--well drained
Saturated hydraulic conductivity (Ksat)--moderately high
USE AND VEGETATION:
Use--mainly timber production, livestock grazing, wildlife habitat
Vegetation--Douglas-fir, ponderosa pine, grand fir, Oregon white oak, western hazel, creambush oceanspray, common snowberry, rose, redstem ceanothus
DISTRIBUTION AND EXTENT: Klickitat County, Washington; MLRA 6; moderate 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
*Ochric epipedon
*Argillic horizon--zone from 43 to 99 cm
*Depth to the paralithic contact--99 cm
*Vitrandic feature--zone from 4 to 18 cm
National Cooperative Soil Survey
U.S.A.