LOCATION BLY OR
Established Series
Rev. JSC/AON/SMM/CEG/JTW
01/2020
BLY SERIES
Landscape--Intermontane basin
Landform--alluvial fans and terraces
Slope--0 to 35 percent
Parent material--alluvium and eolian deposits derived from volcanic rock and tephra
Mean annual precipitation--about 508 cm
Mean annual air temperature--about 6.7 degrees C
Depth class--100 to 200 cm to a duripan
Drainage class--well drained
Soil moisture regime--xeric
Soil temperature regime--frigid
Soil moisture subclass--typic
TAXONOMIC CLASS: Fine-loamy, isotic, frigid Vitrandic Argixerolls
TYPICAL PEDON: Bly ashy loam, on a northeast facing forested terrace with a slope of 18 percent and an elevation of 1378 m. When described on May 16, 2003, the soil was moist throughout. (and pH is by Hellige-Truog unless otherwise noted. All textures are apparent field textures.)
Oi--0 to 2 cm; slightly decomposed plant material; very strongly acid, (pH 4.5); abrupt smooth boundary.
Oe--2 to 5 cm; moderately decomposed plant material; very strongly acid, (pH 4.5); abrupt smooth boundary.
A1--5 to 20 cm; dark grayish brown (10YR 4/2) dry ashy loam, very dark brown (10YR 2/2) moist; weak fine granular structure; soft, very friable, slightly sticky, slightly plastic; many very fine and common fine roots; many very fine and fine irregular pores; neutral, (pH 6.8); clear smooth boundary
A2--20 to 46 cm; grayish brown (10YR 5/2) dry ashy loam, very dark grayish brown (10YR 3/2) moist; weak fine and medium subangular blocky structure; soft, very friable, slightly sticky, slightly plastic; many very fine and common fine roots; many very fine and fine irregular pores; neutral, (pH 7.0); clear smooth boundary
AB--46 to 71 cm; brown (10YR 5/3) dry ashy loam, dark brown (10YR 3/3) moist; weak medium subangular blocky structure; slightly hard, friable, noncemented, slightly sticky, slightly plastic; many very fine, fine and common medium roots; many very fine irregular and many fine tubular pores; neutral, (pH 7.0); clear wavy boundary
Bt--71 to 101 cm; pale brown (10YR 6/3) dry ashy loam, brown (10YR 4/3) moist; moderate medium subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; many very fine, fine and common medium and coarse roots; many very fine irregular and common fine tubular pores; 20 percent faint clay films on all faces of peds; neutral, (pH 6.9); gradual wavy boundary
2Btq1--101 to 130 cm; pale brown (10YR 6/3) dry sandy clay loam, brown (10YR 4/3) moist; moderate medium subangular blocky structure; hard, firm, slightly sticky, slightly plastic; many very fine, fine and common medium and coarse roots; many very fine and fine irregular pores; 20 percent distinct clay films on all faces of peds; 5 percent strongly cemented medium spherical durinodes; neutral, (pH 6.8); clear smooth boundary
2Btq2--130 to 150 cm; pale brown (10YR 6/3) dry sandy clay loam, brown (10YR 4/3) moist; weak coarse angular blocky structure; very hard, very firm, slightly sticky, slightly plastic; common very fine roots between peds; many very fine and common fine irregular pores; 10 percent faint silica on vertical faces of peds and 10 percent distinct clay films on all faces of peds; 2 percent andesite gravel and 5 percent strongly cemented medium durinodes; neutral, (pH 7.1); gradual wavy boundary
2Bqm--150 to 183 cm; pale brown (10YR 6/3) dry cemented sandy loam, brown (10YR 4/3) moist; weak coarse platy structure; extremely hard, very firm, weakly cemented by silica, slightly sticky, slightly plastic; common very fine roots between peds; many very fine and common fine irregular pores; 10 percent faint silica coatings on faces of peds; 2 percent andesite gravel and 10 percent strongly cemented medium durinodes; neutral, (pH 7.0)
TYPE LOCATION: Klamath County, Oregon, about 2 miles south of the community of Beatty, about 15 m west and 491 m north of the southeast corner of Section 35, T. 36 S, R. 12 E., Willamette Meridian; Beatty, Oregon, U. S. Geological Survey quadrangle; latitude 42.4026527 north, longitude 121.2519531 west, datum WGS84 (Coordinates were determined with GPS)
RANGE IN CHARACTERISTICS:
*Mean annual soil temperature--6.6 to 8.3 degrees C
*Moisture control section--10 to 30 cm--dry in all parts for 60 to 90 days within the four-month period following the summer solstice
*Mollic epipedon--50 to 76 cm thick
*Depth to the duripan--100 to 200 cm below the mineral soil surface
*Base saturation in the mollic epipedon--75 to 100 percent (by NH4OAc)
*Base saturation throughout the solum--over 75 percent (by sum of cations)
Estimated properties of the mixed ashy mantle:
*Volcanic glass content--5 to 20 percent
*Acid oxalate Al+1/2Fe--0.4 to 1.0 percent
*Moist bulk density--1.0 to 1.2 g/cc
*15 bar water retention--10 to 20 percent on air dried samples
*NaF ph--greater than 8.4
Some pedons have 2Bq horizons below the 2Btq horizons that have colors similar to the 2Btq horizons and have textures of paragravelly or very paragravelly sandy loam or loam, with a paragravel content of 5 to 60 percent.
Particle-size control section
*Clay content--22 to 34 percent
*Total rock fragment content--0 to 30 percent
A horizon
*Value--4 or 5 dry and 2 or 3 moist
*Chroma--1 to 3 dry or moist
*Clay content--15 to 22 percent
*Gravel content--0 to 10 percent
*Paragravel content--0 to 5 percent pumice
*Cobble content--0 to 5 percent
*Reaction--slightly acid or neutral
*Thickness--30 to 70 cm
AB horizon
Absent in some pedons
*Chroma--2 or 3 dry or moist
*Clay content--15 to 24 percent
*Gravel content--0 to 10 percent
*Paragravel content--0 to 5 percent pumice
*Reaction--moderately acid to neutral
*Thickness--20 to 25 cm
Bt horizon:
Absent in some pedons
*Value--4 to 6 dry and 3 or 4 moist
*Chroma--3 or 4 dry and moist
*Texture--ashy clay loam or ashy loam
*Clay content--22 to 35 percent
*Gravel content--0 to 10 percent
*Paragravel content--0 to 5 percent pumice
*Reaction--moderately acid to neutral
*Thickness--20 to 36 cm
2Btq horizon:
*Value--5 or 6 dry and 4 moist
*Texture--loam, sandy clay loam, or clay loam
*Clay content--18 to 35 percent
*Gravel content--0 to 20 percent
*Cobble content--0 to 10 percent
*Reaction--slightly acid or neutral
*Thickness--50 to 90 cm
2Bqm horizon:
Absent in some pedons
*Hue--10YR or 7.5YR
*Value--6 to 7 dry and 4 moist
*Chroma--3 or 4 dry and moist
*Texture--cemented sandy loam or cemented sandy clay loam
*Gravel content--0 to 30 percent
*Cobble content--0 to 20 percent
*Rupture resistance class--weakly to moderately cemented
COMPETING SERIES:
Bolobin--50 to 100 cm (moderately deep) to lithic (basalt) contact
Bolony--50 to 100 cm (moderately deep) to lithic (basalt) contact
Forbord (T)--soil depth greater than 200 cm (very deep); dry 75 to 90 consecutive days in summer; does not have an O horizon; contains 30 to 50 percent volcanic glass
Forshey--soil depth greater than 200 cm (very deep); dry 60 to 75 consecutive days in summer; mollic epipedon less than 50 cm thick; formed in colluvium from granitic rocks
Hess--mollic epipedon 25 to 50 cm thick; 5 to 50 percent pararock fragments in the lower part of the particle-size control section.
Lidos--mollic epipedon 25 to 50 cm thick
Melhorn--mollic epipedon 25 to 50 cm thick
Nibolob (T)--100 to 150 cm (deep) to lithic (basalt) contact; dry 60 to 75 days in summer
Raycreek (T)--50 to 100 cm (moderately deep) to a lithic (tuff) contact
Salcreek--mollic epipedon 25 to 50 cm thick; greater than 150 cm deep
Spartabutte (T)--50 to 100 cm deep (moderately deep) to a lithic (fractured granitic bedrock) contact; dry 60 to 75 days in summer; mollic epipedon 25 to 45 cm thick
Vangoe--100 to 150 cm (deep) to a lithic (basalt) contact; dry 45 to 60 days in summer
GEOGRAPHIC SETTING:
Elevation--1159 to 1780 m
Climate--cool subhumid
Mean annual precipitation--381 to 910 mm
Mean annual air temperature--6.0 to 8.0 degrees C
Frost-free period--40 to 80 days
GEOGRAPHICALLY ASSOCIATED SOILS:
Lobert--cambic horizons with average clay content less than 18 percent; on terraces
Royst--argillic horizons with clay content greater than 35 percent, greater than 35 percent rock fragments, and lithic contact at 50 to 100 cm; hills and escarpments
Yainax--ochric epipedons and lithic contact at 50 to 100 cm; similar landforms
Yancy--argillic horizons with clay content greater than 35 percent, and indurated duripans at 30 to 50 cm; alluvial fans
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class--well drained
Saturated hydraulic conductivity--moderately high
USE AND VEGETATION:
Use--timber production, livestock grazing, irrigated and dryland hay and pasture, homesites, and wildlife habitat
Vegetation--ponderosa pine, antelope bitterbrush, Idaho fescue, and Ross' sedge, Douglas-fir in some areas of higher precipitation and warmer temperatures
DISTRIBUTION AND EXTENT: Klamath and Shasta Valleys and Basins, Oregon; MLRA 21; moderate extent
SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Davis, California
SERIES ESTABLISHED: Klamath County, Oregon, l977.
REMARKS:
Diagnostic horizons and features in this pedon include:
*Mollic epipedon--the A1, A2, and AB horizons
*Vitrandic subgroup criteria--the zone from the mineral soil surface to 100 cm
*Argillic horizon--the Bt, 2Btq1 and 2Btq2 horizons
*Duripan--the 2Bqm horizon
*Particle-size control section--the zone from 71 to 121 cm
ADDITIONAL DATA:
Laboratory data is available for the upper horizons of this soil.
*NASIS Site ID: 03-SMM-09
*NASIS Pedon ID: 03OR681009
*NSSL Sample number: S00OR035006, Lincoln, NE
2003--The series was reclassified, and the type location was moved.
01/2017--This official series description was updated according to SSR01 Technical Note--Content and Format of Official Series Descriptions (revised 12/2015) Most of the changes were in formatting; no major technical changes were made since the previous revision.
National Cooperative Soil Survey
U.S.A.