LOCATION EBODA                   NV

Established Series
Rev. DWW/PWB/RLB/JBF
01/2019

EBODA SERIES

The Eboda series consists of moderately deep, well drained soils that formed in loess over colluvium and residuum derived from tuff, welded tuff, shale, sandstone or conglomerate. Eboda soils are on side slopes of mountains, plateaus, hills and rock core areas of fan piedmont remnant sideslopes. Slopes are 2 to 50 percent. The mean annual precipitation is about 330 mm and the mean annual temperature is about 6 degrees C.

TAXONOMIC CLASS: Fine-loamy, mixed, superactive, frigid Aridic Argixerolls

TYPICAL PEDON: Eboda loam--rangeland. (Colors are for dry soils unless otherwise noted.) The soil surface is partially covered with 10 percent gravel.

A1--0 to 8 cm; grayish brown (10YR 5/2) loam, very dark grayish brown (10YR 3/2) moist; moderate thin platy structure; soft, very friable, nonsticky and nonplastic; many very fine and common fine roots; many very fine and fine vesicular pores; 10 percent gravel; neutral (pH 7.0); abrupt smooth boundary. (2 to 8 cm thick)

A2--8 to 23 cm; brown (10YR 5/3) loam, very dark grayish brown (10YR 3/2) moist; moderate fine and medium subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; many very fine and few fine roots; many very fine and few fine continuous tubular pores; 5 percent gravel; neutral (pH 7.0); clear smooth boundary. (13 to 18 cm thick)

Bt1--23 to 38 cm; brown (10YR 5/3) loam, very dark grayish brown (10YR 3/2) moist; strong coarse subangular blocky structure parting to strong fine and medium subangular blocky; hard, friable, moderately sticky and slightly plastic; common very fine and few fine roots; many very fine and few fine continuous tubular pores; few faint clay films on faces of ped and lining pores; 10 percent gravel; neutral (pH 7.2); clear smooth boundary. (5 to 25 cm thick)

Bt2--38 to 66 cm; pale brown (10YR 6/3) clay loam, brown (10YR 4/3) moist; moderate coarse prismatic structure parting to strong medium and coarse angular blocky; very hard, firm, moderately sticky and moderately plastic; few very fine roots; many very fine and few fine continuous tubular pores; common faint clay films on faces of ped and lining pores; 5 percent gravel; neutral (pH 7.2); clear wavy boundary. (9 to 19 cm thick)

Bt3--66 to 84 cm; light yellowish brown (10YR 6/4) sandy clay loam, brown (10YR 4/3) moist; strong medium and coarse subangular blocky structure; hard, friable, slightly sticky and slightly plastic; few very fine roots; many very fine and few fine continuous tubular pores; common faint clay films on faces of ped and clay bridges between mineral grains; 5 percent gravel; neutral (pH 7.2); clear wavy boundary. (0 to 18 cm thick)

C--84 to 99 cm; light yellowish brown (10YR 6/4) gravelly sandy clay loam, dark yellowish brown (10YR 4/4) moist; moderate fine and medium angular blocky structure; hard, friable, moderately sticky and moderately plastic; few very fine roots; many very fine and few fine continuous tubular pores; 30 percent gravel; neutral (pH 7.2); clear wavy boundary. (8 to 25 cm thick)

2Cr--99 cm; white (10YR 8/1) weathered tuff; massive; very hard; few very fine roots in fractures.

TYPE LOCATION: Elko County, Nevada. Approximately 1,220 feet north and 1,575 feet west of the southeast corner of section 2, T. 35 N., R. 54 E.; USGS Kittridge Springs 7.5 minute topographic quadrangle; latitude 40 degrees 56 minutes 46 seconds N and longitude 115 degrees 51 minutes 33 seconds W; WGS84 Decimal Degrees 40.9461111 latitude, -115.8591667 longitude.

RANGE IN CHARACTERISTICS:
Soil moisture: Usually dry, moist in winter and spring, dry July through October; aridic soil moisture regime bordering on xeric.
Mean annual soil temperature: 6 to 8 degrees C.
Mollic epipedon thickness: 25 to 43 cm. Commonly includes the upper part of the argillic horizon.
Combined A and Bt thickness: 48 to 84 cm.
Depth to paralithic contact: 58 to 100 cm.
Profile reaction: Neutral or slightly alkaline.

Particle-size control section - Clay content: 25 to 35 percent.
Rock fragments: 5 to 15 percent, mainly gravel.

A horizons
Value: 4 or 5 dry, 2 or 3 moist.
Chroma: 2 or 3.
Structure: Weak or moderate very thin to medium platy or fine and medium subangular blocky.

Bt horizon
Value: 5 or 6 dry, 3 or 4 moist.
Chroma: 2 through 4.
Structure: Moderate to strong angular or subangular blocky, moderate prismatic in some subhorizon of most pedons.
Texture: Loam or clay loam; with less than 45 percent sand. Sandy clay loam is common in the lower subhorizon of many pedons.

C horizon
Hue: 10YR, 2.5Y or 5Y generally reflecting hue of parent material.
Chroma: 3 or 4.
Texture: Gravelly sandy clay loam or gravelly clay loam, or gravelly loam.
Rock fragments: 15 to 30 percent mainly gravel.

COMPETING SERIES: These are the Reluctan, Say, Simon and Toeja series.

Reluctan soils are moderately deep to hard bedrock. Say soils have Bt horizons with 15 to 35 percent rock fragments, more than 45 percent sand, and 18 to 25 percent clay. Simon soils are very deep. Toeja soils lack a paralithic contact within 100 cm.

GEOGRAPHIC SETTING: Eboda soils are on side slopes of mountains, plateaus, hills and rock core areas of fan piedmont remnant sideslopes. Elevations are 1,680 to 2,290 meters. Slopes are 2 to 50 percent. They formed in loess over colluvium and residuum from weathered tuff, welded tuff, shale, sandstone or conglomerate. The mean annual precipitation is 300 to 360 mm, mean annual temperature is 5 to 7 degrees C, and the frost-free season is 80 to 100 days.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Akler, Cleavage, Gance, Hart Camp and Igdell series. Akler and Hart Camp soils are shallow to a paralithic contact. Gance soils are very deep. Cleavage soils are shallow to a lithic contact. Igdell soils are moderately deep to an indurated duripan.

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Well drained; medium or rapid runoff; moderately high saturated hydraulic conductivity.

USE AND VEGETATION: Rangeland and wildlife habitat. The vegetation is mainly big sagebrush, Douglas rabbitbrush, bluebunch wheatgrass, Idaho fescue, Sandberg bluegrass, basin wildrye and Thurber needlegrass.

DISTRIBUTION AND EXTENT: Northeastern Nevada. The soils are not extensive. MLRA 25.

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

SERIES ESTABLISHED: Elko County, Central Part, Nevada, 1986.

REMARKS: Diagnostic horizons and features recognized in this pedon are:
Mollic epipedon - The zone from the soil surface to about 38 cm (A1, A2, Bt1 horizons).
Argillic horizon - The zone from 23 to 84 cm (Bt1, Bt2, Bt3 horizons).
Paralithic contact - The zone at 94 cm (Cr horizon)
Aridic feature - Aridic soil moisture regime bordering on xeric.
Particle-size control section - The zone from 23 to 73 cm (The Bt1, Bt2 and part of the Bt3 horizons).

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National Cooperative Soil Survey
U.S.A.