LOCATION KINGBOLT OR
Established Series
IRD. RJO/DAL/RWL/KMS
02/2019
KINGBOLT SERIES
Landscape--mountains
Landform--mountain slopes
Slope--0 to 60 percent
Parent material--thick mantle of volcanic ash over colluvium and residuum derived from metasedimentary rock, metavolcanic rock, sandstone, or rhyolite
Mean annual precipitation--about 700 mm
Mean annual air temperature--about 4 degrees C
Depth class--moderately deep to lithic bedrock
Drainage class--well drained
Soil moisture regime--xeric
Soil temperature regime--frigid
Soil moisture subclass--typic
TAXONOMIC CLASS: Ashy over loamy-skeletal, amorphic over isotic, frigid Typic Vitrixerands
TYPICAL PEDON: Kingbolt ashy silt loam in an area of woodland, on a 30-percent, convex, southwest-facing slope at an elevation of 1575 m
Oi--0 to 3 cm; slightly decomposed needles, twigs, and grass
A--3 to 13 cm; ashy silt loam, brown (10YR 5/3) dry, dark brown (10YR 3/3) moist; weak very fine and fine subangular blocky structure; soft, very friable, nonsticky and nonplastic; common very fine and fine roots; common very fine and fine irregular pores; 5 percent gravel; neutral (pH 6.6); clear wavy boundary
Bw1--13 to 25 cm; ashy silt loam, light yellowish brown (10YR 6/4) dry, brown (10YR 4/3) moist; weak fine subangular blocky structure; soft, very friable, nonsticky and nonplastic; few very fine and fine roots; common very fine and fine tubular pores; 10 percent gravel; neutral (pH 6.6); gradual wavy boundary
Bw2--25 to 43 cm; ashy very fine sandy loam, very pale brown (10YR 7/4) dry, dark yellowish brown (10YR 4/4) moist; weak fine subangular blocky structure; soft, very friable, nonsticky and nonplastic; common very fine and fine and few coarse roots; common very fine and fine tubular pores; 10 percent gravel; neutral (pH 6.6); abrupt wavy boundary
2Eb--43 to 53 cm; very gravelly sandy loam, pale brown (10YR 6/3) dry, brown (10YR 4/3) moist; weak medium subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; common very fine and fine roots; few very fine and fine tubular pores; 40 percent gravel; neutral (pH 6.8); gradual wavy boundary
2Bwb1--53 to 79 cm; very gravelly sandy loam, light yellowish brown (10YR 6/4) dry, brown (10YR 4/3) moist; weak fine and medium subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; common very fine and fine roots; few very fine and fine tubular pores; 40 percent gravel and 5 percent cobbles; slightly acid (pH 6.4); gradual wavy boundary
2Bwb2--79 to 100 cm; very cobbly loam, pale brown (10YR 6/3) dry, brown (10YR 4/3) moist; weak very fine and fine subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; few very fine and fine roots; few very fine and fine tubular pores; 30 percent gravel and 20 percent cobbles; neutral (pH 6.6); abrupt wavy boundary
2R--100 cm; argillite
TYPE LOCATION: Baker County, Oregon, in the SE1/4NW1/4NE1/4 of section 17, T. 9 S., R. 37 E.; Bourne U.S. Geological Survey quadrangle; latitude 44.7865124, longitude -118.2021452, datum WGS 84 (coordinates estimated from PLSS details)
RANGE IN CHARACTERISTICS:
Mean annual soil temperature--3 to 7 degrees C
Mean summer soil temperature--7 to 12 degrees C
Mean winter soil temperature--0 to 3 degrees C
Soil moisture--dry 45 to 60 days in summer
Depth to lithic contact--50 to 100 cm
Thickness of ash-influenced layers--35 to 50 cm
Estimated properties of layers influenced by volcanic ash
*Ammonium oxalate extractable Al + 1/2 Fe--1.0 to 2.5 percent
*0.02- to 2.0-mm fraction--40 to 60 percent
*Glass content in 0.02- to 2.0-mm fraction--60 to 90 percent
*1/3-bar bulk density--0.65 to 1.00 g/cm3
*Phosphate retention--40 to 85 percent
*15-bar water retention--5 to 12 percent (dried samples)
*8 x Si plus 2 x Fe--5 to 12 percent
Particle-size control section
*Ashy upper part--35 to 50 cm thick; 3 to 10 percent clay (weighted average); 5 to 20 percent rock fragments (weighted average)
*Loamy-skeletal lower part--20 to 55 cm thick; 6 to 18 percent clay (weighted average); 35 to 75 percent rock fragments (weighted average)
*Rock fragment shape--angular, subangular
A horizon
Moist color--7.5YR 4/4, 10YR 3/3
Dry color--7.5YR 6/4, 10YR 5/2, 10YR 5/3, 10YR 5/4
Fine-earth texture--ashy silt loam
Clay content--3 to 10 percent
Sand content--35 to 45 percent
Organic matter content--2 to 6 percent
Total rock fragment content--5 to 15 percent
Gravel content--5 to 15 percent
Cobble content--0 to 5 percent
Reaction--6.1 to 7.3
Thickness--0 to 25 cm
Bw horizon
Moist color--7.5YR 3/4, 7.5YR 4/4, 7.5YR 4/6, 10YR 3/4, 10YR 3/6, 10YR 4/3, 10YR 4/4, 10YR 4/6, 10YR 5/4, 10YR 5/8
Dry color--7.5YR 5/4, 7.5YR 6/4, 7.5YR 7/4, 7.5YR 7/6, 10YR 6/3, 10YR 6/4, 10YR 6/6, 10YR 7/4
Fine-earth texture--ashy silt loam
Clay content--3 to 10 percent
Sand content--35 to 45 percent
Organic matter content--1.0 to 2.5 percent
Total rock fragment content--10 to 25 percent
Gravel content--5 to 20 percent
Cobble content--0 to 5 percent
Reaction--6.1 to 7.3
Combined thickness--20 to 55 cm
2Eb horizon, and 2EBb (where present)
Moist color--5YR 4/4, 5YR 4/6, 10YR 4/3, 10YR 4/4, 10YR 5/4, 10YR 6/4, 2.5Y 4/4
Dry color--7.5YR 6/4, 10YR 5/4, 10YR 5/6, 10YR 6/3, 10YR 6/4, 10YR 7/4, 2.5Y 6/4
Fine-earth texture--silt loam, sandy loam
Clay content--3 to 18 percent
Sand content--30 to 60 percent
Organic matter content--0.5 to 2.0 percent
Total rock fragment content--35 to 60 percent
Gravel content--35 to 55 percent
Cobble content--0 to 5 percent
Reaction--6.1 to 7.3
Thickness of 2Eb horizon--10 to 30 cm
2Bwb horizon, and 2BCb (where present)
Moist color--5YR 4/6, 10YR 4/3, 10YR 4/4, 10YR 5/4, 10YR 6/4, 10YR 6/6, 2.5Y 4/4
Dry color--5YR 6/4, 7.5YR 4/4, 10YR 5/4, 10YR 6/3, 10YR 6/4, 10YR 7/4, 2.5Y 6/4
Fine-earth texture--loam, sandy loam, silt loam
Clay content--6 to 18 percent
Sand content--25 to 70 percent
Organic matter content--0.5 to 1.5 percent
Total rock fragment content--40 to 90 percent
Gravel content--35 to 80 percent
Cobble content--0 to 10 percent
Reaction--6.1 to 7.3
Combined thickness of 2Bwb horizon--13 to 70 cm
COMPETING SERIES:
Endcreek--3 to 6 percent clay and more than 15 percent granitic cobbles and stones in loamy-skeletal part of particle-size control section
Larrupin--no lithic contact within a depth of more than 150 cm; 30 to 60 percent volcanic glass and texture of ashy loamy sand or ashy sandy loam in ashy part of particle-size control section; 35 to 60 percent rounded or subrounded gravel and cobbles of mixed origin from mudflow material in loamy-skeletal part of particle-size control section
Poguepoint--deep (100 to 150 cm) to lithic contact (andesitic basalt)
Raggedrock--deep (100 to 150 cm) to paralithic contact (granite); 40 to 75 percent subrounded granite fragments in loamy-skeletal part of particle-size control section
Tertoo--no lithic contact within a depth of 150 cm; rounded rock fragments in loamy-skeletal part of particle-size control section
GEOGRAPHIC SETTING:
Elevation--1100 to 1890 m
Climate--cool, wet winters; warm, moist summers
Mean annual precipitation--410 to 1200 mm
Mean annual air temperature--2 to 7 degrees C
Frost-free period--25 to 80 days
GEOGRAPHICALLY ASSOCIATED SOILS:
Analulu--in more convex positions and on steeper side slopes; more sparse canopy cover; loamy-skeletal family; influence of volcanic ash in upper part
Crackler--on lower backslopes and footslopes; 100 to 150 cm (deep) to lithic contact (argillite)
Gutridge--on lower, north-facing backslopes and footslopes; 100 to 150 cm (deep) to lithic contact (metasedimentary rock); dry 30 to 45 days in summer
Hondu--in concave positions of footslopes; no lithic contact within a depth of more than 150 cm; loamy-skeletal family; influence of volcanic ash in upper part
Vogel (T)--in convex positions and on steeper side slopes; 25 to 50 cm (shallow) to lithic contact (argillite); influence of volcanic ash in upper part; dry 60 to 75 days in summer
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Saturation during normal years--none
Flooding--none
Ponding--none
Saturated hydraulic conductivity (Ksat)--moderately high, high
USE AND VEGETATION:
Use--timber production, watershed, recreation, wildlife habitat
Native vegetation--grand fir, Douglas-fir, western larch, ponderosa pine, subalpine fir, lodgepole pine, big huckleberry, pinegrass, heartleaf arnica, elk sedge, grouse huckleberry, white hawkweed, white spirea, Piper's anemone, woodland strawberry, pinemat manzanita, myrtle pachystima, prince's pine, northwestern sedge, baldhip rose, tailcup lupine, largeleaf sandwort, common yarrow, low Oregon grape, common snowberry
DISTRIBUTION AND EXTENT: Blue Mountains of northeastern Oregon; MLRA 10; small extent
SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Baker County, Oregon; 2018
REMARKS:
Diagnostic horizons and other features recognized in this pedon
*Ochric epipedon
*Cambic horizon--13 to 10 cm
*Volcanic glass--3 to 43 cm
*Andic soil properties--3 to 43 cm
*Particle-size control section--3 to 100 cm
National Cooperative Soil Survey
U.S.A.