LOCATION MOODYBASIN              OR

Established Series
IRD. JLW/RJO/DAL/KMS
02/2019

MOODYBASIN SERIES

Landscape--mountains
Landform--lateral moraines of glaciated mountain valleys and glaciated mountain slopes
Slope--0 to 90 percent
Parent material--till derived from mixed sources with an influence of volcanic ash in the upper part
Mean annual precipitation--about 1250 mm
Mean annual air temperature--about 2 degrees C
Depth class--moderately deep to densic material
Drainage class--moderately well drained
Soil moisture regime--xeric
Soil temperature regime--cryic
Soil moisture subclass--oxyaquic

TAXONOMIC CLASS: Loamy-skeletal, isotic Vitrixerandic Humicryepts

TYPICAL PEDON: Moodybasin very stony ashy sandy loam in an area of rangeland, on a 30-percent, north-facing slope at an elevation of 1875 m

A--0 to 25 cm; very stony ashy sandy loam, brown (10YR 5/3) dry, dark brown (10YR 3/3) moist; weak fine granular structure; soft, very friable, slightly sticky and nonplastic; many fine and very fine and few medium roots; few fine irregular pores; 15 percent gravel, 15 percent cobbles, and 20 percent stones; strongly acid (pH 5.5); clear wavy boundary

Bw--25 to 41 cm; very stony ashy sandy loam, yellowish brown (10YR 5/4) dry, dark yellowish brown (10YR 3/4) moist; weak fine and very fine subangular blocky structure; soft, friable, slightly sticky and nonplastic; many fine and very fine and few medium roots; few fine irregular pores; 15 percent gravel, 15 percent cobbles, and 20 percent stones; strongly acid (pH 5.5); clear irregular boundary

2Eb--41 to 58 cm; extremely stony sandy loam, light yellowish brown (10YR 6/4) dry, yellowish brown (10YR 5/4) moist; few coarse distinct iron concentrations, yellowish brown (10YR 5/6) moist; weak fine subangular blocky structure; soft, firm, nonsticky and nonplastic; few very fine, fine, medium, and coarse roots in cracks; 20 percent gravel, 30 percent cobbles, and 30 percent stones; moderately acid (pH 6.0); gradual irregular boundary

2Cd--58 to 84 cm; extremely stony sandy loam, light yellowish brown (10YR 6/4) dry, yellowish brown (10YR 5/4) moist; common coarse distinct iron concentrations, yellowish brown (10YR 5/6) moist; massive; very hard, very firm, nonsticky and nonplastic; 20 percent gravel, 30 percent cobbles, and 30 percent stones; moderately acid (pH 6.0)

TYPE LOCATION: Baker County, Oregon, about 173 m north and 678 m east of the southwest corner of section 14, T. 6 S., R. 46 E.; latitude 45.0376840, longitude -117.0549800, datum WGS 84 (coordinates estimated from point on hard copy map)

RANGE IN CHARACTERISTICS:
Mean annual soil temperature--about 2 to 4 degrees C
Mean summer soil temperature--about 5 to 8 degrees C
Mean winter soil temperature--about -2 to 2 degrees C
Soil moisture--dry 45 to 60 consecutive days in summer
Umbric epipedon--18 to 30 cm
Depth to densic material--50 to 100 cm
Thickness of ash-influenced layers--36 to 51 cm

Estimated properties of layers influenced by volcanic ash
*Ammonium oxalate extractable Al + 1/2 Fe--0.7 to 1.0 percent
*Glass content in 0.02- to 2.0-mm fraction--5 to 25 percent

Particle-size control section
*Clay content--12 to 18 percent
*Total rock fragment content--45 to 65 percent

A horizon
Moist color--10YR 2/2, 10YR 3/3
Dry color--10YR 3/4, 10YR 5/3
Fine-earth texture--ashy sandy loam, ashy silt loam
Clay content--5 to 16 percent
Sand content--25 to 55 percent
Organic matter content--2 to 6 percent
Total rock fragment content--40 to 65 percent
Gravel content--10 to 20 percent
Cobble content--10 to 25 percent
Stone content--10 to 25 percent
Reaction--5.1 to 6.0
Base saturation (NH4OAc)--40 to 50 percent
Thickness--18 to 30 cm

Bw horizon
Moist color--10YR 3/4
Dry color--10YR 4/4, 10YR 5/4
Fine-earth texture--ashy sandy loam, ashy silt loam
Clay content--12 to 16 percent
Sand content--30 to 55 percent
Organic matter content--1 to 6 percent
Total rock fragment content--35 to 70 percent
Gravel content--15 to 25 percent
Cobble content--10 to 25 percent
Stone content--10 to 25 percent
Reaction--5.1 to 6.0
Base saturation (NH4OAc)--40 to 50 percent
Thickness--15 to 30 cm

2Eb horizon, and 2Bw horizon (where present)
Moist color--10YR 3/3, 10YR 5/4
Dry color--10YR 4/6, 10YR 6/4
Fine-earth texture--loam, sandy loam
Clay content--10 to 16 percent
Sand content--40 to 75 percent
Organic matter content--0.5 to 2.5 percent
Total rock fragment content--50 to 80 percent
Gravel content--15 to 25 percent
Cobble content--20 to 30 percent
Stone content--15 to 30 percent
Reaction--5.1 to 6.0
Base saturation (NH4OAc)--60 to 75 percent
Thickness--13 to 41 cm

2Cd horizon
Moist color--10YR 3/3, 10YR 5/4
Dry color--10YR 4/6, 10YR 6/4
Fine-earth texture--loam, loamy sand, sandy loam
Clay content--3 to 17 percent
Sand content--50 to 80 percent
Organic matter content--0.3 to 1.5 percent
Total rock fragment content--55 to 80 percent
Gravel content--20 to 30 percent
Cobble content--15 to 30 percent
Stone content--15 to 30 percent
Reaction--5.1 to 6.0

COMPETING SERIES:
Dollarlake, Granitemountain--no water table or densic contact within a depth of 150 cm
Fruitcreek, Leespeak--no water table or densic contact within a depth of 100 cm

GEOGRAPHIC SETTING:
Elevation--630 to 2380 m
Climate--cold, wet winters; cool, dry summers
Mean annual precipitation--870 to 1790 mm
Mean annual air temperature--0 to 4 degrees C
Frost-free period--15 to 60 days

GEOGRAPHICALLY ASSOCIATED SOILS:
Ducklake--on moraines; under a closed canopy, cold forest; thick volcanic ash mantle; 100 to 140 cm (deep) to a densic contact
Granitemountain--on colluvial backslopes and footslopes
Hasshollow--on concave glaciated backslopes and footslopes; under a closed canopy, cold forest; thick volcanic ash mantle; more than 150 cm thick (very deep)
Mudlakebasin--on moraines; under a closed canopy, cold forest; thick volcanic ash mantle; 50 to 100 cm (moderately deep) to a lithic contact (granite)

DRAINAGE AND PERMEABILITY:
Depth to saturation during normal years--30 to 50 cm in April and May
Flooding--very rare, very brief periods in April and May
Ponding--none
Saturated hydraulic conductivity (Ksat)--moderately high, high

USE AND VEGETATION:
Use--watershed, wildlife habitat, livestock grazing, recreation
Potential native vegetation--Engelmann spruce, greenleaf fescue, lupine, western needlegrass, mountain big sagebrush, big huckleberry, woolly sunflower, aster, white hawkweed, weevil dandelion, common yarrow, elk sedge, common snowberry

DISTRIBUTION AND EXTENT: Blue Mountains; MLRA 10; 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
*Umbric epipedon--zone from the surface to a depth of 25 cm
*Cambic horizon--zone from 25 to 41 cm
*Volcanic glass--zone from the surface to a depth of 25 cm
*Particle-size control section--zone from 25 to 58 cm

1/2019-The classification was changed from Oxyaquic Humicryepts to Vitrixerandic Humicryepts because the soils have enough glass and ash to meet the criteria for the Vitrixerandic subgroup criteria. The soils still meet the criteria for the Oxyaquic subgroup.

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National Cooperative Soil Survey
U.S.A.