LOCATION TEJABE                  NV

Established Series
Rev. EWB/WED/JBF
05/2016

TEJABE SERIES

The Tejabe series consists of very shallow, well drained soils that formed in residuum and colluvium derived from intermediate volcanic rocks. Tejabe soils are on mountain backslopes. Slopes are 30 to 75 percent. The mean annual precipitation is about 250 mm and the mean annual temperature is about 11 degrees C.

TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive, nonacid, mesic Lithic Xeric Torriorthents

TYPICAL PEDON: Tejabe very stony sandy loam, rangeland. (Colors are for dry soil unless otherwise noted.) The surface is covered with 25 percent gravel, 5 percent cobbles and 10 percent stones

A1--0 to 3 cm; brown (10YR 5/3) very stony sandy loam, brown (10YR 4/3) moist; weak fine subangular blocky structure; soft, very friable, nonsticky and nonplastic; common very fine and few fine roots; common very fine interstitial and few very fine tubular pores; 35 percent gravel, 5 percent cobbles and 10 percent stones ; neutral (pH 7.0); clear smooth boundary. (3 to 8 cm thick)

A2--3 to 15 cm; brown (10YR 5/3) very gravelly sandy loam, brown (10YR 4/3) moist; weak fine and medium subangular blocky structure; soft, very friable, nonsticky and nonplastic; common very fine and fine roots; common very fine tubular pores; 45 percent gravel; neutral (pH 7.0); clear smooth boundary. (8 to 15 cm thick)

A3--15 to 20 cm; brown (10YR 5/3) very gravelly sandy loam, brown (10YR 4/3) moist; weak medium subangular blocky structure; soft, very friable, nonsticky and nonplastic; common medium and coarse and few very fine and fine roots; common very fine tubular pores; 50 percent gravel; neutral (pH 7.0); clear wavy boundary. (0 to 8 cm thick)

Bt--20 to 23 cm; pale brown (10YR 6/3) very gravelly sandy loam, dark yellowish brown (10YR 4/4) moist; weak medium subangular blocky structure; soft, very friable, slightly sticky and nonplastic; few very fine and fine roots; common very fine tubular pores; 50 percent gravel; few thin clay films on faces of ped and in pores; neutral (pH 7.0); abrupt irregular boundary. (0 to 5 cm thick)

R--23 cm; hard, fractured, welded rhyolitic tuff, roots and soil in fractures.

TYPE LOCATION: Mineral County, Nevada in the Gabbs Valley Range, approximately 200 feet north and 2,000 feet east of the southwest corner of section 16, T. 10 N., R. 34 E.; USGS Mount Ferguson 7.5 minute topographic quadrangle; latitude 38 degrees 43 minutes 12 seconds N and longitude 118 degrees 12 minutes 02 seconds W; WGS84 Decimal Degrees 38.7195556 latitude, -118.200556 longitude.

RANGE IN CHARACTERISTICS:
Soil moisture: Usually dry, moist in winter and spring dry in summer and fall except for 10 to 20 days cumulative between July and October due to convection storms, aridic soil moisture regime bordering on xeric.
Mean annual soil temperature: 12 to 14 degrees C.
Depth to bedrock: 10 to 25 cm.

Particle-size control section - Clay content: 10 to 18 percent.
Rock fragments: 35 to 55 percent.

A horizon
Hue 10YR or 2.5Y
Value: 5 or 6 dry, 3 or 4 moist.
Chroma: 2 through 4, dry or moist.

COMPETING SERIES: These are the Jobpeak, Lequieu, Medved, Mizel, Skedaddle, Snaker and Wahguyhe series.

Jobpeak soils are not moist for 10 to 20 days in the summer. Lequieu and Skedaddle soils have more than 18 percent clay in the particle-size control section. Medved have a C horizon with more than 90 percent rock fragments. Mizel soils have a reaction of medium acid or slightly acid. Snaker and Wahguyhe soils have bedrock at a depth of 25 to 50 cm.

GEOGRAPHIC SETTING: Tejabe soils are on mountain backslopes. The soils formed in residuum and colluvium derived from andesite and rhyolite. Slopes are 30 to 75 percent. Elevations are 1,460 to 2,230 meters. The climate semi-arid with cool, moist winters and hot, dry summers. Mean annual precipitation is 200 to 300 mm; mean annual temperature is 10 to 12 degrees C., and the frost-free season is 100 to 130 days.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Calpeak and Gabbvally soils. Calpeak soils are shallow to a paralithic contact. Gabbvally soils have an argillic horizon.

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

USE AND VEGETATION: Rangeland and wildlife habitat. The native vegetation is Wyoming big sagebrush, Sandberg bluegrass, green ephedra and bottlebrush squirreltail.

DISTRIBUTION AND EXTENT: West-central Nevada. These soils are not extensive.

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

SERIES ESTABLISHED: Mineral County, Nevada, 1985.

REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - The zone from the surface to 18 cm (A1 A2 and part of A3 horizons).
Lithic contact - The boundary at 23 cm (R layer).
Xeric feature - Aridic soil moisture regime that borders on xeric.
Particle-size control section - The zone from the surface to 23 cm (the A1, A2, A3 and Bt horizons).

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National Cooperative Soil Survey
U.S.A.