LOCATION HOXIE                   OR

Established Series
Rev. DKS/TDT/CEG/JTW
01/2020

HOXIE SERIES


Landscape--Intermontane Basin
Landform--lake terraces, lake beds, basin floors, drainageways, mountain valleys
Slope--0 to 1
Parent material--lacustrine material, including diatomaceous sediments, mixed with volcanic ash
Mean annual precipitation--about 890 mm
Mean annual air temperature--about 5.6 degrees C
Depth class--very deep
Drainage class--poorly drained
Soil moisture regime--aquic
Soil temperature regime--cryic
Soil moisture subclass--typic

TAXONOMIC CLASS: Fine-silty, mixed, superactive, nonacid Humic Cryaquepts

TYPICAL PEDON: Hoxie silt loam in a meadow under controlled drainage, with a slope of less than 1 percent, at an elevation of 1507 m

A--0 to 25 cm; silt loam, gray (10YR 5/1) dry, black (10YR 2/1) moist; moderate very fine subangular blocky structure; soft, friable, slightly sticky and plastic; many fine and very fine roots; many very fine, fine, and medium irregular pores; organic carbon is 6.7 percent, percent diatoms is 83; moderately acid (pH 5.8); abrupt smooth boundary

BA--25 to 36 cm; silt loam, gray (10YR 5/1) dry, black (10YR 2/1) moist; few fine prominent yellowish brown (10YR 5/6), moist, iron-manganese masses in root channels; moderate coarse and medium prismatic structure; slightly hard, firm, slightly sticky and plastic; common medium and fine roots; common very fine and fine discontinuous pores; moderately acid (pH 5.8); abrupt smooth boundary

Bg1--36 to 53 cm; silt loam, light gray (10YR 7/2) dry, grayish brown (2.5Y 5/2) moist; common medium prominent brown (7.5YR 4/4), strong brown (7.5YR 4/6), and strong brown (7.5YR 5/6), moist, iron-manganese masses; moderate coarse prismatic structure; hard, firm, slightly sticky and plastic; common medium and fine roots; few very fine discontinuous pores; organic carbon is 5.0 percent, percent diatoms is 10 percent; moderately acid (pH 5.9); clear smooth boundary

Bg2--53 to 71 cm; silt loam, light gray (10YR 7/2) dry, grayish brown (2.5Y 5/2) moist; common medium prominent brown (7.5YR 4/4), strong brown (7.5YR 5/6), and strong brown (7.5YR 5/8), moist, iron-manganese masses; moderate coarse prismatic structure; hard, friable, sticky and plastic; common medium and fine roots; few very fine and fine discontinuous pores; iron accumulation on pore walls and in root channels; strongly acid (pH 5.4); clear smooth boundary

BCg1--71 to 86 inches; very fine sandy loam, light gray (10YR 7/2) dry, grayish brown (10YR 5/2) moist; common medium prominent and distinct brown (7.5YR 4/4), strong brown (7.5YR 5/6), and dark reddish brown (5YR 3/3), moist, iron-manganese masses; weak medium and fine subangular blocky structure; slightly hard, friable, nonsticky and slightly plastic; common medium and fine roots; common very fine discontinuous pores; iron accumulation on pore walls and in root channels; 3 percent gravel; strongly acid (pH 5.4); clear smooth boundary

BCg2--86 to 112 cm; silt loam, light gray (10YR 7/2) dry, grayish brown (10YR 5/2) moist; common medium prominent strong brown (7.5YR 5/8), reddish brown (5YR 4/4), and yellowish red (5YR 5/6), moist, iron-manganese masses; massive to weak coarse prismatic structure; hard, friable, slightly sticky and plastic; common medium and fine roots; few very fine and fine discontinuous pores; iron accumulation on pore walls and in root channels; strongly acid (pH 5.4); gradual smooth boundary

Cg--112 to 165 cm; silt loam, light gray (10YR 7/2) dry, grayish brown (10YR 5/2) moist; variegated strong brown (7.5YR 4/6), strong brown (7.5YR 5/8), and yellowish red (5YR 4/6), moist, iron-manganese masses; massive; hard, friable, slightly sticky and plastic; few fine and very fine roots; few very fine and fine discontinuous pores; common discontinuous iron cementation; 3 percent gravel; strongly acid (pH 5.4)

TYPE LOCATION: Klamath County, Oregon; on Buck Lake approximately 747 m east and 15 m north of the southwest corner of sec. 12, T. 38 S., R. 5 E., Willamette Meridian; Lake of the Woods South, Oregon, U.S. Geological Survey quadrangle; Latitude 42.27122 degrees, Longitude -122.1797, datum WGS 84 (coordinates determined from legal description)

RANGE IN CHARACTERISTIC:

*Mean annual soil temperature--5.5 to 8.3 degrees C
*Mean summer soil temperature--11.1 to 12.8 degrees C
*Moisture control section--water table occurs at depths of 0 to 90 cm from March through June
*Depth to restriction--over 200 cm
*Thickness of the mollic epipedon--25 to 46 cm
*1/3-bar bulk density within the mollic epipedon--0.60 to 0.85 g/cm3, due to high amounts of organic carbon and diatomaceous sediments
*Base Saturation (by NH4OAc)--over 50 percent in the A and BA horizons, decreasing with depth to less than 50 percent within 150 cm of the mineral soil surface
*Organic carbon--over 1 percent in the A and BA horizons


Particle size control section
*Clay content--18 to 30 percent, field estimated
*Sand content--less than 15 percent sand that is coarser than very fine sand
*Gravel content--0 to 10 percent

A horizon
*Value--2 or 3 moist; 4 or 5 dry in the upper part and 6 or 7 dry in the lower part
*Chroma--1 or 2 moist and dry
*Fine earth texture--silt loam
*Reaction--5.6 to 6.0 (moderately acid)
*Gravel content--0 to 6 percent
*Thickness--15 to 30 cm

BA horizon
Absent in some pedons
*Gravel content--0 to 6 percent
*Thickness--8 to 15 cm

Bg and BCg horizons
*Hue--10YR or 2.5Y
*Value--3 to 5 moist and 5 to 8 dry
*Chroma--1 or 2 moist and 1 to 4 dry
*Fine earth texture--very fine sandy loam, silt loam, silty clay loam
*Reaction--5.1 to 6.5 (strongly acid to slightly acid)
*Gravel content--0 to 8 percent
*Thickness--40 to 100 cm

Cg horizon
*Hue--10YR or 2.5Y
*Value--3 to 5 moist and 5 to 8 dry
*Chroma--1 or 2 moist and 1 to 4 dry
*Fine earth texture--loamy fine sand, very fine sandy loam, silt loam, silty clay loam
*Reaction--5.1 to 6.5 (strongly acid to slightly acid)
*Gravel content--0 to 8 percent

COMPETING SERIES:
Clam Gulch--umbric epipedon; A horizon is extremely acid to strongly acid (pH 3.5 to 5.5); not influenced by volcanic ash; do not contain diatomaceous sediments

GEOGRAPHIC SETTING:
Elevation--1310 to 1545 m
Slope--0 to 1 percent
Climate--precipitation occurs mainly in winter and spring
Mean annual precipitation--760 to 1090 mm
Mean annual air temperature--4.4 to 7.2 degrees C
Frost-free period--5 to 35 days

GEOGRAPHICALLY ASSOCIATED SOILS:
Oatman--loamy-skeletal; ochric epipedon
Otwin--loamy-skeletal; ochric epipedon; 50 to 100 cm (moderately deep) to lithic (andesite) contact

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class--Poorly drained
Water Table--occurs at depths of 0 to 90 cm from March through June
Saturated hydraulic conductivity (Ksat)--moderately high in A horizons; moderately low to moderately high in Bg and BCg horizons; moderately low to very high in Cg horizons

USE AND VEGETATION:
Use--native meadow pasture, irrigated pasture
Vegetation--tufted hairgrass, mat muhly, spikerush, sedges

DISTRIBUTION AND EXTENT: Klamath and Shasta Valleys and Basins, Southwestern Oregon; MLRA 21; inextensive

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Davis, California

SERIES ESTABLISHED: Jackson County Area, Oregon, 1988 (Klamath Part).

REMARKS:
Diagnostic horizons and other features in this pedon
*Mollic epipedon--zone from 0 to 36 cm
*Cambic horizon--zone from 36 to 71 cm
*Aquic conditions--zone from 0 to 165 cm;depleted matrix with chroma of 2 or less and redox concentrations at 36 cm; water table at 0 to 90 cm from March to June

ADDITIONAL DATA:
*NASIS Site ID--S1986OR035004
*NASIS Pedon ID--1988OR0350001
*Laboratory sample numbers 87P-2206-2207; Pedon number 87P-422.
*1/3-bar bulk density numbers based on laboratory data from other diatomaceous-influenced soils--Chinchallo (lab sample number 06N0135, userpedon ID S2005OR035001); Hoxie taxadjunct (lab sample number 06N0136, userpedon ID S2005OR035002); and Cosbie (lab sample number 06N0137, userpedon ID S2005Or035003).



National Cooperative Soil Survey
U.S.A.