LOCATION HABENOME OR
Established Series
IRD. RAW/RJO/DAL/KMS
01/2019
HABENOME SERIES
Landscape--mountains
Landform--basins and benches on glaciated mountain slopes
Slope--0 to 30 percent
Parent material--alluvium, lacustrine deposits, and till derived from granite
Mean annual precipitation--about 990 mm
Mean annual air temperature--about 3 degrees C
Depth class--very deep
Drainage class--poorly drained
Soil moisture regime--aquic
Soil temperature regime--cryic
Soil moisture subclass--typic
TAXONOMIC CLASS: Coarse-loamy, mixed, superactive Typic Cryaquolls
TYPICAL PEDON: Habenome silt loam in a wet meadow, on a 7-percent, northeast-facing slope at an elevation of 2301 m
A--0 to 28 cm; silt loam, brown (10YR 5/3) dry, dark brown (7.5YR 3/3) moist; weak fine and medium subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; common fine and few medium roots; few fine tubular pores; strongly acid (pH 5.5); clear smooth boundary
AC--28 to 36 cm; sandy loam, yellowish brown (10YR 5/4) dry, very dark grayish brown (10YR 3/2) moist; many coarse prominent strong brown (7.5YR 5/6) redoximorphic concentrations; single grain; slightly hard, very friable, slightly sticky and slightly plastic; few fine and medium roots; few very fine irregular pores; moderately acid (pH 5.7); clear smooth boundary
C--36 to 43 cm; silt loam, light yellowish brown (10YR 6/4) dry, dark yellowish brown (10YR 4/4) moist; common medium distinct light gray (7.5YR 7/1) redoximorphic depletions; massive; slightly hard, friable, slightly sticky and slightly plastic; few fine and medium roots; moderately acid (pH 5.7); clear smooth boundary
Ab--43 to 56 cm; silt loam, brown (10YR 4/3) dry, very dark brown (10YR 2/2) moist; massive; hard, firm, slightly sticky and slightly plastic; few fine and medium roots; moderately acid (pH 5.7); clear smooth boundary
C1b--56 to 71 cm; sandy loam, brown (7.5YR 5/4) dry, dark brown (7.5YR 3/4) moist; many coarse prominent yellowish red (5YR 5/6) redoximorphic concentrations; single grain; slightly hard, very friable, nonsticky and nonplastic; few fine and medium roots; few very fine irregular pores; moderately acid (pH 5.7); clear smooth boundary
C2b--71 to 89 cm; silt loam, brown (7.5YR 4/3) dry, dark brown (10YR 3/3) moist; many coarse prominent light gray (5Y 7/1) redoximorphic depletions; massive; hard, very firm, slightly sticky and slightly plastic; few fine roots; moderately acid (pH 5.7); clear smooth boundary
Ab--89 to 114 cm; silt loam, very dark grayish brown (10YR 3/2) dry, very dark brown (10YR 2/2) moist; massive grading to weak medium subangular blocky structure; hard, friable, slightly sticky and nonplastic; few fine roots; common fine irregular pores; 10 percent partially decomposed wood fragments; sulfur odor; moderately acid (pH 5.7); gradual wavy boundary
Cb--114 to 155 cm; silt loam, dark grayish brown (10YR 4/2) dry, very dark grayish brown (10YR 3/2) moist; massive; hard, firm, slightly sticky and nonplastic; few fine roots; moderately acid (pH 5.7)
TYPE LOCATION: Union County, Oregon, about 820 m east and 425 m north of the southwest corner of section 12, T. 5 S., R. 42 E.; latitude 45.1409796, longitude -117.5094522, datum WGS 84 (coordinates and PLSS details estimated from a point on a hard copy map)
RANGE IN CHARACTERISTICS:
Mean annual soil temperature--about 1 to 6 degrees C
Mean summer soil temperature--about 4 to 10 degrees C
Mean winter soil temperature--about -3 to 2 degrees C
Thickness of mollic epipedon--25 to 40 cm
Depth to aquic conditions and distinct or prominent redoximorphic concentrations and depletions--25 to 35 cm
Organic carbon content--irregular decrease as depth increases
Particle-size control section
*Clay content--5 to 10 percent
*Total rock fragment content--0 to 25 percent
A horizon
Moist color--7.5YR 3/2, 7.5YR 3/3, 10YR 2/2
Dry color--7.5YR 4/2, 10YR 3/2, 10YR 4/3, 10YR 4/4, 10YR 5/3
Fine-earth texture--silt loam, sandy loam
Clay content--5 to 10 percent
Sand content--20 to 60 percent
Organic matter content--2.5 to 8.0 percent
Total rock fragment content--0 to 10 percent
Gravel content--0 to 10 percent
Reaction--5.1 to 6.5
Thickness--25 to 35 cm
AC horizon
Moist color--7.5YR 3/2, 10YR 2/2
Dry color--7.5YR 4/2, 10YR 3/2, 10YR 4/3, 10YR 4/4, 10YR 5/3, 10YR 5/4
Fine-earth texture--silt loam, sandy loam
Clay content--5 to 10 percent
Sand content--20 to 60 percent
Organic matter content--2.5 to 8.0 percent
Total rock fragment content--0 to 10 percent
Gravel content--0 to 10 percent
Reaction--5.1 to 6.5
Thickness --5 to 15 cm
C horizon
Moist color--10YR 3/4, 10YR 4/4
Dry color--10YR 5/4, 10YR 6/4
Fine-earth texture--silt loam, sandy loam
Clay content--5 to 12 percent
Sand content--20 to 60 percent
Organic matter content--0 to 1 percent
Total rock fragment content--0 to 30 percent
Gravel content--0 to 30 percent
Reaction--5.1 to 7.3
Thickness--8 to 35 cm
Ab and Ab horizons
Moist color--7.5YR 3/2, 10YR 2/1, 10YR 2/2, 10YR 3/2
Dry color--7.5YR 4/2, 10YR 3/2, 10YR 5/2
Fine-earth texture--silt loam, sandy loam
Clay content--5 to 12 percent
Sand content--20 to 65 percent
Organic matter content--2.5 to 4.0 percent
Total rock fragment content--0 to 5 percent
Gravel content--0 to 5 percent
Reaction--5.1 to 6.1
Thickness--0 to 25 cm
Cb horizon
Moist color--7.5YR 3/2, 7.5YR 3/4, 10YR 2/1, 10YR 2/2, 10YR 3/2, 10YR 3/3, 10YR 4/2, 10YR 4/3
Dry color--7.5YR 4/2, 7.5YR 5/2, 7.5YR 5/4, 10YR 3/2, 10YR 5/3, 10YR 6/3, 10YR 6/4
Fine-earth texture--silt loam, sandy loam
Clay content--3 to 10 percent
Sand content--15 to 70 percent
Organic matter content--0 to 1 percent
Total rock fragment content--0 to 30 percent
Gravel content--0 to 30 percent
Reaction--5.1 to 6.5
COMPETING SERIES:
Bandarrow--regular decrease in organic carbon content as depth increases; 65 to 90 cm deep to loamy-skeletal material
Fourlog--mollic epipedon 50 to 150 cm thick; regular decrease in organic carbon content as depth increases
Rosane--60 to 100 cm deep to contrasting sand and gravel that is 35 to 70 percent rock fragments
Venapass--mollic epipedon 40 to 60 cm thick; neutral or slightly alkaline
GEOGRAPHIC SETTING:
Elevation--1220 to 2270 m
Climate--cold, wet winters; warm, moist summers
Mean annual precipitation--800 to 1540 mm
Mean annual air temperature-- -1 to 5 degrees C
Frost-free period--10 to 75 days
GEOGRAPHICALLY ASSOCIATED SOILS:
Bycracky--on benches and basins of glacially scoured mountains; organic soil material more than 150 cm deep; under wet meadow vegetation
Rockcreekbutte--on steep, convex backslopes and shoulders; under an open canopy of subalpine fir and whitebark pine; moderately deep to bedrock
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Saturation during normal years--saturated at a depth of 25 to 51 cm in April and May and at a depth of 30 to 152 cm in June
Flooding--very brief, occasional periods in April through June
Ponding--brief, occasional periods in April through June
Saturated hydraulic conductivity (Ksat)--moderately high
USE AND VEGETATION:
Use--watershed, wildlife habitat, livestock grazing, recreation
Native vegetation--subalpine fir, Engelmann spruce, quaking aspen, Northwest Territory sedge, undergreen willow, stink currant, prickly currant, western meadow-rue, arrowleaf ragwort, mountain willow, minerslettuce, tufted hairgrass, water sedge, smallflower miterwort, baldhip rose, sedge, rose angelica, tall mannagrass, cowparsnip, northern twinflower, claspleaf twistedstalk
Plant association--high-elevation, wet meadow sedge communities and some scattered spruce or aspen
DISTRIBUTION AND EXTENT: Blue Mountains of northeastern 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
*Mollic epipedon--zone from the surface to a depth of 36 cm
*Aquic conditions--zone from 28 to 155 cm
National Cooperative Soil Survey
U.S.A.