LOCATION HONDU OR
Established Series
IRD.JLW/RJO/DAL/KMS
01/2019
HONDU SERIES
Landscape--mountains
Landform--mountain slopes
Slope--0 to 90 percent
Parent material--thin mantle of volcanic ash over colluvium and residuum derived from hard igneous extrusive rock, metasedimentary rock, or metavolcanic rock and sandstone
Mean annual precipitation--about 750 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: Loamy-skeletal, isotic, frigid Andic Haploxerepts
TYPICAL PEDON: Hondu ashy sandy loam, forested, on a 40-percent, convex, northwest-facing slope at an elevation of 1920 m
Oi--0 to 1 cm; slightly decomposed needles and twigs
A--1 to 5 cm; ashy sandy loam, brown (10YR 5/3) dry, very dark grayish brown (10YR 3/2) moist; weak fine granular structure; soft, very friable, nonsticky and nonplastic; many very fine and fine roots; few fine irregular pores; 10 percent gravel; neutral (pH 7.0); clear smooth boundary
Bw--5 to 23 cm; gravelly ashy sandy loam, pale brown (10YR 6/3) dry, brown (10YR 4/3) moist; weak fine granular structure; soft, very friable, nonsticky and nonplastic; many very fine and fine and common medium roots; few fine irregular pores; 15 percent gravel; neutral (pH 7.0); clear wavy boundary
2Eb--23 to 43 cm; very gravelly sandy loam, light yellowish brown (10YR 6/4) dry, yellowish brown (10YR 5/4) moist; weak very fine subangular blocky structure; soft, very friable, slightly sticky and nonplastic; many medium and common fine and coarse roots; few fine irregular and tubular pores; 35 percent gravel and 5 percent cobbles; neutral (pH 7.0); clear wavy boundary
2EBb--43 to 61 cm; very gravelly sandy loam, brownish yellow (10YR 6/6) dry, yellowish brown (10YR 5/6) moist; weak very fine subangular blocky structure; soft, very friable, slightly sticky and nonplastic; common fine and medium and few coarse roots; common fine irregular and few fine tubular pores; 45 percent gravel and 5 percent cobbles; neutral (pH 7.0); gradual smooth boundary
2Bwb--61 to 127 cm; very gravelly sandy loam, brownish yellow (10YR 6/6) dry, yellowish brown (10YR 5/6) moist; weak fine and medium subangular blocky structure; soft, friable, nonsticky and nonplastic; few fine, medium, and coarse roots; few fine irregular and tubular pores; 50 percent gravel and 5 percent cobbles; neutral (pH 7.0); gradual smooth boundary
2BCb--127 to 155 cm; extremely gravelly sandy loam, brownish yellow (10YR 6/6) dry, yellowish brown (10YR 5/6) moist; weak very fine subangular blocky structure; soft, very friable, nonsticky and nonplastic; few fine, medium, and coarse roots; many fine and few medium irregular pores; 70 percent gravel and 10 percent cobbles; neutral (pH 7.0)
TYPE LOCATION: Baker County, Oregon, in the SE1/4SE1/4NE1/4 of section 01, T. 15 S., R. 36 E.; Rastus Mountain U.S. Geological Survey quadrangle; latitude 44.2947218, longitude -118.2323314, datum WGS 84 (source of coordinates unknown)
RANGE IN CHARACTERISTICS:
Mean annual soil temperature--4 to 7 degrees C
Mean summer soil temperature--8 to 12 degrees C
Mean winter soil temperature--0 to 3 degrees C
Soil moisture--dry 45 to 60 consecutive days in summer
Thickness of ash-influenced layers--20 to 35 cm
Estimated properties of layers influenced by volcanic ash
*Ammonium oxalate extractable Al + 1/2 Fe--1.0 to 2.4 percent
*0.02- to 2.0-mm fraction--40 to 60 percent
*Glass content in 0.02- to 2.0-mm fraction--50 to 80 percent
*1/3-bar bulk density--0.65 to 1.0 g/cm3
*Phosphate retention--40 to 90 percent
*15-bar water retention--5 to 12 percent (dried samples)
Particle-size control section
*Clay content--3 to 9 percent
*Total rock fragment content--50 to 70 percent
A horizon
Moist color--10YR 3/2, 10YR 3/3
Dry color--10YR 4/2, 10YR 5/3
Fine-earth texture--ashy silt loam, ashy sandy loam
Clay content--6 to 10 percent
Sand content--20 to 70 percent
Organic matter content--2 to 6 percent
Total rock fragment content--10 to 35 percent
Gravel content--10 to 35 percent
Cobble content--0 to 5 percent
Stone content--0 to 5 percent
Reaction--6.1 to 7.3
Thickness--3 to 15 cm
Bw horizon
Moist color--10YR 3/4, 10YR 4/3, 10YR 4/4, 10YR 5/4
Dry color--10YR 5/4, 10YR 6/3, 10YR 6/4
Fine-earth texture--ashy silt loam, ashy sandy loam
Clay content--5 to 8 percent
Sand content--35 to 70 percent
Organic matter content--1 to 3 percent
Total rock fragment content--15 to 35 percent
Gravel content--15 to 35 percent
Cobble content--0 to 5 percent
Stone content--0 to 5 percent
Reaction--6.1 to 7.3
Thickness--18 to 30 cm
2Eb horizon
Moist color--10YR 3/4, 10YR 4/3, 10YR 5/4
Dry color--10YR 6/3, 10YR 6/4
Fine-earth texture--sandy loam
Clay content--5 to 10 percent
Sand content--45 to 75 percent
Organic matter content--2.5 to 4.0 percent
Total rock fragment content--50 to 70 percent
Gravel content--35 to 65 percent
Cobble content--0 to 5 percent
Stone content--0 to 5 percent
Reaction--6.1 to 7.3
Thickness--13 to 40 cm
2Bwb horizon
Moist color--10YR 4/4, 10YR 4/6, 10YR 5/4, 10YR 5/6
Dry color--10YR 6/3, 10YR 6/6, 10YR 7/4
Fine-earth texture--sandy loam
Clay content--3 to 8 percent
Sand content--60 to 75 percent
Organic matter content--0.5 to 2.0 percent
Total rock fragment content--45 to 70 percent
Gravel content--45 to 65 percent
Cobble content--0 to 10 percent
Stone content--0 to 5 percent
Reaction--6.1 to 7.3
Thickness--25 to 70 cm
2BCb horizon
Moist color--10YR 4/4, 10YR 5/6, 10YR 6/6, 2.5Y 5/4
Dry color--10YR 6/3, 10YR 6/6, 10YR 7/4, 2.5Y 5/2, 2.5Y 7/4
Fine-earth texture--sandy loam
Clay content--3 to 11 percent
Sand content--60 to 80 percent
Organic matter content--0.3 to 1.5 percent
Total rock fragment content--60 to 80 percent
Gravel content--50 to 70 percent
Cobble content--0 to 10 percent
Stone content--0 to 5 percent
Reaction--6.1 to 7.3
Thickness--25 to 50 cm
COMPETING SERIES:
Bigcow--deep or very deep (100 to 200 cm) to lithic contact (andesite, basalt); formed in basalt colluvium; thin mantle of volcanic ash; particle-size control section averages 9 to 16 percent clay
Inkler--dry 60 to 75 consecutive days in summer
Juandefuca--more than 12 percent (air-dried) water content at 1500 kPa (i.e., medial); less than 30 percent volcanic glass in ash mantle
McCree--deep (100 to 150 cm) to lithic contact (rhyolite); 5 to 20 percent volcanic glass in ash mantle; dry 60 to 75 consecutive days in summer
Newhorn--moderately deep (50 to 100 cm) to densic contact (till); dry 60 to 75 consecutive days in summer
Oxerine--moderately deep (50 to 100 cm) to lithic contact (gneiss); dry 60 to 75 consecutive days in summer
Piutespring--moderately deep (50 to 100 cm) to lithic contact (granitic rock)
Redriver--moderately deep (50 to 100 cm) to lithic contact (basalt); dry 75 to 90 consecutive days in summer
Tunnelcreek--moderately deep (50 to 100 cm) to paralithic contact over metavolcanic rock; ochric epipedon; more than 12 percent (air-dried) water content at 1500 kPa in ash mantle (i.e., medial); particle-size control section averages 8 to 18 percent clay
Veridge--moderately deep (50 to 100 cm) to lithic contact (sandstone); 30 to 60 percent volcanic glass in thin volcanic ash mantle; less than 10 percent clay in particle-size control section; dry 60 to 75 consecutive days in summer
Wilma--moderately deep (50 to 100 cm) to lithic contact (granite); 2C or 2BC horizon that has hue of 10YR or 2.5Y; dry 60 to 75 consecutive days in summer
Wonder--moderately deep (50 to 100 cm) to lithic contact (andesitic basalt); particle-size control section averages 9 to 15 percent clay; subangular or angular rock fragments
GEOGRAPHIC SETTING:
Elevation--1130 to 1870 m
Climate--cold, wet winters; cool, dry summers
Mean annual precipitation--390 to 1200 mm
Mean annual air temperature--3 to 7 degrees C
Frost-free period--30 to 80 days
GEOGRAPHICALLY ASSOCIATED SOILS:
Analulu--on convex backslopes and ridges; moderately deep to bedrock; minor influence of volcanic ash; under
Douglas-fir, ponderosa pine, or grand fir forest
Blackgulch--on moderately dissected backslopes; shallow to bedrock; mollic epipedon; minor influence of volcanic ash; under ponderosa pine,
Douglas-fir, elk sedge, and common snowberry
Deck--on crests and backslopes of plateaus; moderately deep to lithic contact; mollic epipedon; mixed mantle of volcanic ash; loamy-skeletal cambic horizon; under
Douglas-fir, ponderosa pine, common snowberry, mallow ninebark, pinegrass, and elk sedge
Eastpine--on ridges, shoulders, and backslopes; moderately deep to metasedimentary rock; mollic epipedon that has small amount of volcanic ash; loamy-skeletal cambic horizon; under grand fir,
Douglas-fir, western larch,
Rocky Mountain maple, birchleaf spirea, and pinegrass
McWillar--on backslopes; deep to lithic contact (argillite); thick volcanic ash mantle over loamy-skeletal argillic horizon; under grand fir, birchleaf spirea, pussytoes, and pinegrass
Payraise--on backslopes; very deep colluvium; thin volcanic ash mantle; loamy-skeletal argillic horizon; under grand fir, pinegrass, and birchleaf spirea
Vogel--on convex shoulders and backslopes; shallow to lithic contact (argillite); small amount of volcanic ash mixed in loamy-skeletal colluvium; under open ponderosa pine and
Douglas-fir forest
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Saturation during normal years--none
Flooding--none
Ponding--none
Saturated hydraulic conductivity (Ksat)--high
USE AND VEGETATION:
Use--timber production, watershed, wildlife habitat, livestock grazing, recreation
Native vegetation--ponderosa pine, Douglas-fir, grand fir, western larch, lodgepole pine, western juniper, pinegrass, birchleaf spirea, heartleaf arnica, common snowberry, elk sedge, woodland strawberry, low Oregon grape, big huckleberry, white hawkweed, blue wildrye, Saskatoon serviceberry, fewflower peavine, Sierra pea, showy aster, western fescue, white spirea, pathfinder, largeleaf sandwort, sweetcicely, grouse huckleberry, American vetch, common yarrow, prince's pine
Plant association--dominantly ABGR/CARU (grand fir/pinegrass); may include PSME/CARU (Douglas-fir/pinegrass) and PSME/CELE/CAGE (Douglas-fir/curlleaf mountain mahogany/elk sedge)
DISTRIBUTION AND EXTENT: Blue Mountains in eastern Oregon; MLRA 43C; small extent
SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Wallowa-Whitman National Forest, Oregon; 2018
REMARKS:
Diagnostic horizons and other features recognized in this pedon
*Ochric epipedon
*Upper cambic horizon--zone from 5 to 23 cm
*Buried eluvial layer--zone from 23 to 61 cm
*Buried cambic horizon--zone from 61 to 127 cm
*Volcanic glass--zone from 1 to 23 cm
*Andic soil properties--zone from 1 to 23 cm
*Particle-size control section--zone from 25 to 100 cm
ADDITIONAL DATA: Kellogg Soil Survey Laboratory pedon numbers 92OR063007 and 97OR059002
National Cooperative Soil Survey
U.S.A.