LOCATION HONEYMOONCAN            OR

Established Series
IRD. RJO/DAL/KMS
01/2019

HONEYMOONCAN SERIES

Landscape-mountains
Landform--mountain slopes
Slope--0 to 60 percent
Parent material--thick mantle of volcanic ash over colluvium and residuum derived from metavolcanic rock
Mean annual precipitation--about 710 mm
Mean annual air temperature--about 4 degrees C
Depth class--deep to lithic bedrock
Drainage class--well drained
Soil moisture regime--udic
Soil temperature regime--frigid
Soil moisture subclass--typic

TAXONOMIC CLASS: Ashy over loamy-skeletal, amorphic over isotic, frigid Alfic Udivitrands

TYPICAL PEDON: Honeymooncan cobbly ashy sandy loam in an area of woodland, on a 40-percent, east-facing slope at an elevation of 1750 m (Soil textures are apparent field textures.)

Oi--0 to 3 cm; needles and twigs

Oe--3 to 5 cm; decomposing organic matter; few very fine roots throughout; 10 percent stones and 5 percent boulders

A--5 to 10 cm; cobbly ashy sandy loam, brown (7.5YR 5/3) dry, dark brown (7.5YR 3/2) moist; weak very fine granular structure; soft, very friable, nonsticky and nonplastic; weakly smeary; common very fine and few fine and medium roots throughout; common very fine and few fine irregular pores; 10 percent gravel, 10 percent cobbles, and 5 percent stones; slightly acid (pH 6.3); clear wavy boundary

Bw--10 to 46 cm; cobbly ashy silt loam, very pale brown (10YR 7/4) dry, brown (7.5YR 4/4) moist; weak fine and medium subangular blocky structure; soft, very friable, nonsticky and nonplastic; weakly smeary; few very fine and common fine, medium, and coarse roots throughout; few very fine tubular pores; 15 percent gravel, 10 percent cobbles, and 5 percent stones; neutral (pH 6.7); abrupt wavy boundary

2AEb--46 to 91 cm; very cobbly loam, pale brown (10YR 6/3) dry, dark brown (7.5YR 3/3) moist; weak medium and fine subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; common fine and few medium and coarse roots throughout; few very fine and fine tubular pores; 30 percent gravel, 15 percent cobbles, and 5 percent stones; slightly alkaline (pH 7.5); gradual wavy boundary

2Btb--91 to 145 cm; extremely cobbly clay loam, yellowish brown (10YR 5/4) dry, brown (10YR 4/3) moist; weak medium subangular blocky structure parting to moderate fine and very fine angular blocky; hard, friable; moderately sticky and moderately plastic; many thin clay films on ped faces and pore linings; few fine and medium roots throughout; common very fine and few fine tubular pores; 45 percent gravel, 25 percent cobbles, and 10 percent stones; moderately alkaline (pH 8.0)

2R--145 cm; metavolcanic rock

TYPE LOCATION: Grant County, Oregon, in the southeast corner of the SE1/4SW1/4SE1/4 of section 14, T. 11 S., R. 33 E.; Dixie Meadow U.S. Geological Survey quadrangle; latitude 44.6054203, longitude -118.7009158, datum WGS 84 (source of coordinates unknown)

RANGE IN CHARACTERISTICS:
Mean annual soil temperature--about 4 to 6 degrees C
Mean summer soil temperature--about 8 to 11 degrees C
Mean winter soil temperature--about 0 to 2 degrees C
Soil moisture--dry 30 to 45 days in summer
Depth to lithic contact--100 to 150 cm
Thickness of ash-influenced layers--35 to 55 cm

Estimated properties of layers influenced by volcanic ash
*Ammonium oxalate extractable Al + 1/2 Fe--1 to 3 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 90 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--about 35 to 55 cm thick; 5 to 10 percent clay; 5 to 30 percent rock fragments
*Loamy-skeletal lower part--about 50 to 65 cm thick; 18 to 35 percent clay; 40 to 60 percent rock fragments
*Rock fragment shape--angular, subangular

A horizon
Moist color--7.5YR 3/2, 7.5YR 3/4, 7.5YR 4/4, 10YR 3/3
Dry color--7.5YR 5/3, 7.5YR 5/4, 7.5YR 6/4, 10YR 5/3
Fine-earth texture--ashy silt loam, ashy sandy loam
Clay content--3 to 10 percent
Sand content--22 to 50 percent
Organic matter content--3 to 6 percent
Total rock fragment content--0 to 25 percent
Gravel content--0 to 10 percent
Cobble content--0 to 10 percent
Stone content--0 to 5 percent
Reaction--6.1 to 7.3
Thickness--5 to 15 cm

Bw horizon
Moist color--7.5YR 4/3, 7.5YR 4/4, 7.5YR 5/4, 7.5YR 5/5, 10YR 3/4, 10YR 5/4, 10YR 5/5
Dry color--7.5YR 6/4, 7.5YR 7/4, 10YR 5/6, 10YR 6/4, 10YR 7/4
Fine-earth texture--ashy silt loam
Clay content--5 percent
Sand content--22 to 45 percent
Organic matter content--0.5 to 2.0 percent
Total rock fragment content--5 to 30 percent
Gravel content--5 to 15 percent
Cobble content--0 to 10 percent
Stone content--0 to 5 percent
Reaction--6.1 to 7.8
Thickness--30 to 40 cm

2AEb horizon, and 2Eb and 2EBb horizons (where present)
Moist color--5YR 3/2, 5YR 3/3, 7.5YR 3/3, 7.5YR 4/3, 10YR 3/4, 10YR 4/2, 10YR 4/3, 10YR 5/3
Dry color--7.5YR 5/2, 7.5YR 5/3, 7.5YR 6/3, 10YR 5/3, 10YR 6/2, 10YR 6/3, 10YR 6/4
Fine-earth texture--loam, silty clay loam
Clay content--10 to 30 percent
Sand content--10 to 50 percent
Organic matter content--1.0 to 2.5 percent
Total rock fragment content--35 to 60 percent
Gravel content--15 to 35 percent
Cobble content--5 to 25 percent
Stone content--0 to 5 percent
Reaction--6.6 to 7.8
Thickness--20 to 50 cm

2Btb horizon, and 2BCb horizon (where present)
Moist color--5YR 4/3, 7.5YR 5/4, 10YR 3/3, 10YR 4/3, 10YR 4/4
Dry color--7.5YR 4/2, 10YR 4/3, 10YR 4/4, 10YR 5/4, 10YR 6/3, 10YR 6/4, 10YR 7/3
Fine-earth texture--loam, silty clay loam, clay loam
Clay content--20 to 35 percent
Sand content--12 to 50 percent
Organic matter content--0.5 to 1.5 percent
Total rock fragment content--45 to 60 percent
Gravel content--15 to 40 percent
Cobble content--10 to 30 percent
Stone content--0 to 10 percent
Reaction--6.6 to 8.4
Thickness--35 to 65 cm

COMPETING SERIES:
Hugus--very deep (more than 150 cm); ashy silt loam texture and 15 to 60 percent glass in volcanic ash; pH of 4.5 to 6.0 in 2Bt horizon; formed in volcanic ash over colluvium, residuum, or old alluvium derived from metasedimentary rock or gneiss
Limberjim--deep (100 to 150 cm) to lithic contact; ashy silt loam texture and 25 to 45 percent glass in volcanic ash; phosphorus retention of 30 to 50 percent; mean annual soil temperature of about 6 to 8 degrees C; pH of 5.6 to 7.3 in 2Bt horizon; formed in volcanic ash over colluvium derived from basalt and andesite
Rebarrow (T)-- very deep (more than 150 cm); ashy silt loam texture and 60 to 90 percent glass in volcanic ash; subangular or angular rock fragments in loamy-skeletal part of particle-size control section; pH of 6.1 to 7.8 in 2Bt horizon; formed in ash over colluvium derived from andesitic basalt
Syrupcreek--moderately deep (50 to 100 cm) to lithic contact; volcanic ash that has ashy silt loam texture; formed in ash and loess over colluvium derived from basalt and andesitic basalt

GEOGRAPHIC SETTING:
Elevation--1400 to 1770 m
Climate--cold, wet winters; warm, dry summers
Mean annual precipitation--500 to 810 mm
Mean annual air temperature--3 to 5 degrees C
Frost-free period--30 to 75 days

GEOGRAPHICALLY ASSOCIATED SOILS:
Twobit--on convex to planar, mid to upper slopes; 50 to 100 cm to lithic contact; no argillic horizon

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Saturation during normal years--none
Flooding--none
Ponding--none
Saturated hydraulic conductivity (Ksat)--moderately high

USE AND VEGETATION:
Use--timber production, livestock grazing, recreation, wildlife habitat, watershed
Native vegetation--grand fir, Engelmann spruce, western larch, Douglas-fir, lodgepole pine, subalpine fir, ponderosa pine, big huckleberry, grouse huckleberry, northern twinflower, singleleaf pinyon, heartleaf arnica, elk sedge, pinegrass, baldhip rose, Columbia brome, northwestern sedge, prince's pine
Plant association--dominantly ABGR/LIBOL2; may include ABGR/VAME

DISTRIBUTION AND EXTENT: Blue Mountains of northeastern Oregon; MLRA 43C; small extent

SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Portland, Oregon

SERIES ESTABLISHED: Malheur National Forest, Oregon; 2018

REMARKS:
Diagnostic horizons and other features recognized in this pedon
*Ochric epipedon
*Cambic horizon--zone from the surface to a depth of 46 cm
*Argillic horizon--zone from 91 to 145 cm
*Depth to lithic contact--145 cm
*Volcanic glass--zone from 5 to 46 cm
*Andic soil properties--zone from 5 to 46 cm
*Particle-size control section--ashy part includes zone from 5 to 46 cm; loamy-skeletal part includes zone from 46 to 107 cm

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National Cooperative Soil Survey
U.S.A.