LOCATION JUNGO                   NV

Established Series
Rev. TEB/RLB/JBF
05/2016

JUNGO SERIES

The Jungo series consists of very deep, well drained soils that formed in alluvium derived from mixed rocks, with admixtures of loess and volcanic ash. The Jungo soils are on fan piedmont remnants and ballenas. Slopes are 4 to 50 percent. The mean annual precipitation is about 200 mm and the mean annual temperature is about 11 degrees C.

TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive, mesic Xeric Haplargids

TYPICAL PEDON: Jungo very gravelly loam, rangeland. (Colors are for dry soil unless otherwise noted.) The soil surface is partially covered with 50 percent gravel and 5 percent cobbles.

A1--0 to 8 cm; pale brown (10YR 6/3) very gravelly loam, brown (10YR 4/3) moist; moderate very thin platy structure; soft, very friable, slightly sticky and slightly plastic; common very fine roots; common fine vesicular and tubular pores; 35 percent gravel; moderately alkaline (pH 8.0); clear smooth boundary. (0 to 10 cm thick)

A2--8 to 15 cm; pale brown (10YR 6/3) very gravelly loam, brown (10YR 4/3) moist; weak very thin platy structure; soft, very friable, moderately sticky and moderately plastic; many very fine and few fine roots; many very fine and fine tubular pores; 25 percent gravel; moderately alkaline (pH 8.0); clear wavy boundary. (5 to 10 cm thick)

Btk1--15 to 23 cm; light yellowish brown (10YR 6/4) gravelly clay loam, dark yellowish brown (10YR 4/4) moist; weak fine subangular blocky structure; slightly hard, friable, moderately sticky and moderately plastic; many very fine and few fine and medium roots; many very fine tubular pores; few thin clay films on faces of ped and lining pores; thin lime coats on undersides of gravel; 25 percent gravel; moderately alkaline (pH 8.2); clear wavy boundary. (0 to 15 cm thick)

Btk2--23 to 36 cm; light yellowish brown (10YR 6/4) very gravelly clay loam, dark yellowish brown (10YR 4/4) moist; moderate medium subangular blocky structure; hard, firm, moderately sticky and moderately plastic; common very fine and fine and few medium roots; common very fine tubular pores; common moderately thick clay films on faces of ped and lining pores; thin lime coats on undersides of gravel; 55 percent gravel; strongly effervescent; moderately alkaline (pH 8.2); clear smooth boundary. (10 to 30 cm thick)

Btk3--36 to 51 cm; light yellowish brown (10YR 6/4) very gravelly clay loam, dark yellowish brown (10YR 4/4) moist; massive; hard, firm, moderately sticky and moderately plastic; common very fine and fine and few medium and coarse roots; common very fine tubular pores; many moderately thick clay films bridging sand grains; few fine lime filaments; thin lime coats on undersides of gravel; few fine soft masses of gypsum; 55 percent gravel; violently effervescent; moderately alkaline (pH 8.4); clear smooth boundary. (10 to 25 cm thick)

Btk4--51 to 74 cm; light yellowish brown (10YR 6/4) extremely gravelly clay loam, dark yellowish brown (10YR 4/4) moist; massive; hard, firm, moderately sticky and moderately plastic; few very fine, fine, medium and coarse roots; common very fine and fine tubular pores; many moderately thick clay films bridging sand grains; common fine and medium lime filaments; thin lime coats on undersides of coarse fragments; few fine soft masses of gypsum; 65 percent gravel and 2 percent cobbles; violently effervescent; moderately alkaline (pH 8.4); clear smooth boundary. (0 to 38 cm thick)

Btk5--74 to 117 cm; light yellowish brown (10YR 6/4) extremely gravelly sandy clay loam, dark yellowish brown (10YR 4/4) moist; massive; hard, friable, slightly sticky and slightly plastic; few very fine, fine and medium roots; many very fine and common fine tubular pores; common moderately thick clay films bridging sand grains; common fine and medium lime filaments; thin lime coats on undersides of rock fragments; few fine soft masses of gypsum; 70 percent gravel, 10 percent cobbles, 10 percent stones; violently effervescent; strongly alkaline (pH 8.6); clear smooth boundary. (0 to 50 cm thick)

Btk6--117 to 152 cm; light yellowish brown (10YR 6/4) extremely gravelly sandy clay loam, dark yellowish brown (10YR 4/4) moist; massive; hard, friable, slightly sticky and slightly plastic; few fine roots; few very fine and common fine tubular pores common moderately thick clay films bridging sand grains; common fine and medium lime filaments; thin lime coats on undersides of rock fragments; 70 percent gravel, 5 percent cobbles, and 2 percent stones; strongly effervescent; strongly alkaline (pH 8.8).

TYPE LOCATION: Pershing County, Nevada; approximately 5 miles south of Sulphur near Rosebud Peak in an unsurveyed area about 22,000 feet north and 17,000 feet west of the northwest corner of section 6, T. 33 N., R. 30 E.; USGS Sulphur 7.5 minute quadrangle; latitude 40 degrees 49 minutes 17 seconds N and longitude 118 degrees 43 minutes 01 seconds W; WGS84 Decimal Degrees 40.8215000 latitude, -118.716944 longitude.

RANGE IN CHARACTERISTICS:
Soil moisture: Moist in winter and early spring; dry from May through October; aridic soil moisture regime bordering on xeric.
Mean annual soil temperature: 12 to 13 degrees C.
Depth to carbonates: 8 to 20 cm.

Particle-size control section - Clay content: 27 to 35 percent.
Rock fragments: Averages 35 to 60 percent, mainly gravel.

A horizon
Value: 6 or 7 dry and 4 or 5 moist.
Chroma: 2 or 3.
Reaction: Slightly alkaline or moderately alkaline.

Btk horizons
Hue: 10YR or 7.5YR.
Value: 5 or 6 dry.
Chroma: 3 or 4.
Texture: Gravelly clay loam, very gravelly clay loam or very gravelly sandy clay loam in the upper subhorizons and extremely gravelly clay loam or extremely gravelly sandy clay loam in the lower subhorizons.
Clay content: 27 to 35 percent.
Rock fragments: Averages 35 to 75 percent, mainly gravel; typically increasing with depth and including stones and cobbles in the lower subhorizons.
Structure: Weak to strong, fine to coarse subangular blocky or horizon is massive.
Consistence: Slightly hard or hard dry, friable or firm moist.
Reaction: Moderately alkaline or strongly alkaline.

Bk horizons (when present below 100 cm)
Value: 6 through 8 dry, 5 or 6 moist.
Chroma: 2 through 4.
Texture: Extremely gravelly sandy loam, extremely gravelly loamy sand, extremely gravelly loamy coarse sand.
Clay content: 4 to 10 percent.
Rock fragments: 60 to 80 percent, mainly gravel with a few cobbles and stones.
Structure: Horizon is massive or single grained.
Reaction: Moderately alkaline or strongly alkaline.

COMPETING SERIES: These are the Bairs, Basket, Breko, Chiefrange, Cowgil, Drino, Hefed, Huilepass, Hunewill, Lithgow, Plush, Stucky and Washoe series.

Breko, Basket, Chiefrange and Huilepass soils receive appreciably amounts of summer precipitation, have Bk horizons within 100 cm and lack Btk horizons with secondary carbonates. Cowgil and Stucky soils have mean annual soil temperature that are between 8 to 11 degrees C. and sola that are less than 76 cm deep. Drino, Lithgow and Sed soils have a lithic contact between 50 to 100 cm. Hefed and Hunewill soils have solum thickness of 25 to 50 cm and 18 to 27 percent clay in the control section. Plush soils are neutral and lack carbonates above 100 cm. Stucky soils have mean annual soil temperature of 10 to 11 degrees C. and control section rock fragments are mainly cobbles and stones. Washoe soils are slightly acid or neutral and have 18 to 27 percent clay in the particle-size control section.

GEOGRAPHIC SETTING: Jungo soils are on side slopes of fan piedmont remnants and ballenas. These soils formed in alluvium derived from mixed rocks, with admixtures of loess and volcanic ash. Slopes are 4 to 50 percent. Elevations are 1,300 to 1,900 meters. The climate is cool, semiarid with cool, moist winters and warm, dry summers. The mean annual precipitation is 180 to 230 mm, mean annual temperature is 11 to 12 degrees C, and the frost-free season is 110 to 130 days.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Aboten and Rednik series. Aboten soils are shallow over a strongly cemented duripan. Rednik soils have an aridic moisture regime.

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

USE AND VEGETATION: Rangeland and wildlife habitat. The present vegetation is mainly low sagebrush, pine bluegrass, bottlebrush squirreltail, shadscale and Bailey greasewood.

DISTRIBUTION AND EXTENT: Northwestern Nevada. These soils are not extensive. MLRA 27.

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 the soil surface to about 15 cm (A1 and A2 horizons).
Argillic horizon - The zone from about 15 to 152 cm (Btk1, Btk2, Btk3, Btk4, Btk5 and Btk6 horizons).
Particle-size control section - The zone from 15 to 65 cm (upper 50 cm of the argillic horizon).

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National Cooperative Soil Survey
U.S.A.