LOCATION DEADYON                 NV

Established Series
Rev. DLJ/MJZ/RLB/JBF
05/2016

DEADYON SERIES

The Deadyon series consists of very deep, well drained soils that formed in alluvium derived mainly from granitic rocks. The Deadyon soils are on fan skirts, inset fans and fan piedmonts. Slopes are 0 to 8 percent. The mean annual precipitation is about 230 mm and the mean annual temperature is about 9 degrees C.

TAXONOMIC CLASS: Coarse-loamy, mixed, superactive, mesic Xeric Haplargids

TYPICAL PEDON: Deadyon loam--rangeland. (Colors are for dry soil unless otherwise noted.) The soil surface is partially covered with 5 percent gravel.

A1--0 to 5 cm; pale brown (10YR 6/3) loam, dark brown (10YR 3/3) moist; weak thin platy structure; slightly hard, very friable, slightly sticky and slightly plastic; few very fine roots; many fine vesicular pores; 5 percent gravel; slightly alkaline (pH 7.8); clear smooth boundary. (5 to 10 cm thick)

A2--5 to 13 cm; pale brown (10YR 6/3) loam, dark brown (10YR 3/3) moist; weak thin platy structure; soft, very friable, slightly sticky and slightly plastic; many very fine and fine roots; common very fine tubular pores; 5 percent gravel; slightly alkaline (pH 7.8); clear smooth boundary. (8 to 13 cm thick)

Bt1--13 to 38 cm; pale brown (10YR 6/3) loam, dark yellowish brown (10YR 4/4) moist; weak medium subangular blocky structure; soft, very friable, slightly sticky and slightly plastic; common very fine and fine roots; many fine and common medium tubular pores; few thin clay films lining pores and bridging mineral grains; 5 percent gravel; moderately alkaline (pH 8.2); clear smooth boundary. (8 to 28 cm thick)

Bt2--38 to 61 cm; pale brown (10YR 6/3) loam, brown (10YR 4/3) moist; weak medium subangular blocky structure; slightly hard, very friable, slightly sticky and slightly plastic; common very fine and fine roots; common fine and few medium tubular pores; few thin clay films lining pores and bridging mineral grains; 5 percent gravel; moderately alkaline (pH 8.2); clear wavy boundary. (13 to 25 cm thick)

C--61 to 89 cm; light yellowish brown (10YR 6/4) sandy loam, brown (10YR 4/3) moist, with thin lenses of stratified gravelly coarse sand in parts of the horizon; massive; slightly hard, very friable, nonsticky and nonplastic; few very fine and fine roots; few fine tubular pores; 5 percent gravel; moderately alkaline (pH 8.2); clear smooth boundary. (0 to 38 cm thick)

2Ck1--89 to 109 cm; light yellowish brown (10YR 6/4) gravelly coarse sand, dark yellowish brown (10YR 4/4) moist; single grained; loose, nonsticky and nonplastic; few very fine roots; many fine interstitial pores; 30 percent gravel; slightly effervescent; moderately alkaline (pH 8.4); clear smooth boundary. (15 to 38 cm thick)

3Ck2--109 to 152 cm; light yellowish brown (10YR 6/4) sandy loam, dark yellowish brown (10YR 4/4) moist; massive; soft, very friable, nonsticky and nonplastic; few very fine roots; few very fine tubular pores; few fine strongly effervescent segregated soft lime masses in a noneffervescent matrix; 8 percent gravel; moderately alkaline (pH 8.4). (38 to 64 cm thick)

TYPE LOCATION: Pershing County, Nevada; approximately 5 miles east of Winnemucca Lake and north of Sage Hen Spring about 1,400 feet west and 1,700 feet south of the northeast corner of section 9, T. 26 N., R. 25 E.; latitude 40 degrees 08 minutes 28 seconds N and longitude 119 degrees 10 minutes 39 seconds W; WGS84 Decimal Degrees 40.1403889 latitude, -119.178611 longitude..

RANGE IN CHARACTERISTICS:
Soil moisture: Usually dry, moist in winter and early spring, dry from June through October; aridic soil moisture regime bordering on xeric.
Mean annual soil temperature: 8 to 12 degrees C.
Depth to 2Ck horizons: 50 to 100 cm.
Depth to the base of the argillic horizon: 38 to 76 cm.

Particle-size control section - Clay content: 12 to 18 percent.
Rock fragments: 5 to 15 percent, mainly fine gravel.

A horizon
Hue: 10YR or 2.5Y.
Value: 5 or 6 dry and 3 or 4 moist, when the upper 18 cm is mixed, the value is lighter than 5.5 dry.
Chroma: 2 or 3.
Consistence: Soft or slightly hard dry.
Reaction: Neutral through moderately alkaline.

Bt horizons
Value: 4 through 6 dry, 3 or 4 moist.
Chroma: 2 through 4.
Texture: Loam, sandy loam or coarse sandy loam.
Structure: Weak or moderate subangular blocky or is massive.
Consistence: Soft or slightly hard dry, very friable or friable moist.
Reaction: Slightly alkaline or moderately alkaline.
Clay films: Few or common on ped faces, bridging mineral grains or lining pores.

C horizons
Chroma: 3 or 4.
Texture: Loam, sandy loam or coarse sandy loam.
Clay content: 3 to 8 percent.
Rock fragments: 5 to 15 percent, mainly fine gravel.
Structure: Platy, or horizon is massive.
Consistence: Soft or slightly hard dry, very friable or friable moist, slightly sticky or nonsticky wet.
Reaction: Slightly alkaline or moderately alkaline.

Ck horizons
Hue: 10YR or 2.5Y.
Value: 5 through 7 dry, 3 through 5 moist.
Chroma: 3 or 4.
Texture: Stratified sandy loam through gravelly coarse sand.
Clay content: Averages 3 to 7 percent.
Rock fragments: Averages 15 to 35 percent, mainly fine gravel; subhorizons contain from 5 to 60 percent.
Structure: Platy or horizon is massive or single grained.
Consistence: Loose, soft or slightly hard dry, loose or very friable moist; nonsticky or slightly sticky wet.
Reaction: Moderately alkaline or strongly alkaline.
Carbonates: Noneffervescent through strongly effervescent.
Segregated lime: Few or common fine lime filaments or soft lime masses in the lower part.

COMPETING SERIES: These are the Ratleflat, Saralegui, and Tarloc series.

Ratleflat soils are moist for 10 to 20 days in the summer, have mean annual soil temperatures of 12 to 15 degrees C and 15 to 35 percent rock fragments in the argillic horizon. Saralegui soils are noncalcareous above 100 cm and lacks a discontinuity above 100 cm. Tarloc soils have a paralithic contact within a depth of 50 to 100 cm.

GEOGRAPHIC SETTING: Deadyon soils are on fan skirts, inset fans and fan piedmonts. These soils formed in alluvium derived mainly from granitic rocks. Slopes are 0 to 8 percent. Elevations are 1,220 to 1,680 meters. The climate is cool, semiarid with cool, moist winters and warm, dry summers. The mean annual precipitation is 200 to 250 mm; mean annual temperature is 7 to 11 degrees C, and frost-free season is 100 to 130 days.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Biga, Shawave and Slipback soils. All of these soils have a natric horizon with more than 18 percent clay.

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Well drained, slow to medium runoff; moderately low saturated hydraulic conductivity.

USE AND VEGETATION: Rangeland and wildlife habitat. The present vegetation is mainly Wyoming big sagebrush, spiny hopsage, Indian ricegrass and pine bluegrass.

DISTRIBUTION AND EXTENT: Northwestern Nevada. These soils are not extensive.

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

SERIES ESTABLISHED: Pershing County, Nevada, West Part, 1986.

REMARKS: Diagnostic horizons and features recognized in this pedon are.
Ochric epipedon - The zone from the surface to 13 cm (A1 and A2 horizons).
Argillic horizon - The zone from 13 to 61 cm (Bt1 and Bt2 horizons).
Xeric intergrades - Meets organic carbon requirement for xeric.
Particle-size control section - The zone from 13 to 61 cm (Bt1 and Bt2 horizons).

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National Cooperative Soil Survey
U.S.A.