LOCATION REINA                   NV

Established Series
Rev. MJZ/RLB/JBF
03/2016

REINA SERIES

The Reina series consists of well drained soils that are shallow to an indurated hardpan. Reina soils formed in residuum derived from andesite, basalt, quartzite, and tuff with a component of volcanic ash and loess. Reina soils are on summits and side slopes of bench areas, plateaus, and foothills. Slopes are 2 to 30 percent. Precipitation is about 230 mm and the mean annual temperature is about 9 degrees C.

TAXONOMIC CLASS: Clayey-skeletal, smectitic, mesic, shallow Xeric Argidurids

TYPICAL PEDON: Reina loam--rangeland. (Colors are for dry soil unless otherwise noted.) The soil surface is partially covered with about 15 percent gravel.

A1--0 to 5 cm; pale brown (10YR 6/3) loam, dark brown (10YR 3/3) moist; moderate medium platy structure; slightly hard, friable, slightly sticky and slightly plastic; common very fine and fine roots; many fine vesicular pores; 10 percent gravel; moderately alkaline (pH 8.0); clear smooth boundary. (3 to 18 cm thick)

A2--5 to 18 cm; pale brown (10YR 6/3) loam, brown (10YR 4/3) moist; moderate thin platy structure; slightly hard, friable, moderately sticky and moderately plastic; common very fine and fine, few medium roots; many very fine tubular pores; 5 percent gravel, moderately alkaline (pH 8.0); clear smooth boundary. (5 to 15 cm thick)

Bt1--18 to 28 cm; yellowish brown (10YR 5/4) gravelly clay loam, dark yellowish brown (10YR 4/4) moist; moderate fine subangular blocky structure; slightly hard, friable, moderately sticky and moderately plastic; common very fine and fine roots; many very fine tubular pores; few faint clay films on peds; 25 percent gravel, moderately alkaline (pH 8.0); clear wavy boundary. (0 to 15 cm thick)

Bt2--28 to 46 cm; yellowish brown (10YR 5/4) very gravelly clay, brown (7.5YR 4/4) moist; moderate fine prismatic structure parting to moderate fine subangular blocky; very hard, firm, very sticky and very plastic; few fine roots; few fine tubular pores; continuous distinct clay films on peds; 45 percent gravel and 5 percent cobbles; moderately alkaline (pH 8.0); abrupt wavy boundary. (8 to 25 cm thick)

Bkqm--46 to 66 cm; indurated duripan; massive; very hard; very firm; very thin continuous laminar cap; abrupt wavy boundary. (5 to 25 cm thick)

R--66 cm; andesite.

TYPE LOCATION: Lander County, Nevada; 900 feet north and 1,500 feet east of the southwest corner of section 35, T. 36, N., R. 46 E.; USGS Izzenhood Gap 7.5 minute topographic quadrangle; latitude 40 degrees 56 minutes 54 seconds N and longitude 116 degrees 45 minutes 18 seconds W; WGS84 Decimal Degrees 40.9483333 latitude, -116.7550000 longitude.

RANGE IN CHARACTERISTICS:
Soil moisture: Moist in the winter and spring, dry in July through October; aridic soil moisture regime bordering xeric.
Mean annual soil temperature: 8 to 11 degrees C.
Depth to duripan: 36 to 50 cm.
Depth to bedrock: 56 to 76 cm.

Particle-size control section - Clay content: 35 to 55 percent.
Rock fragments: 35 to 60 percent, mainly gravel, 5 to 15 percent cobbles.

A horizons
Value: 3 or 4 moist.
Reaction: Slightly alkaline or moderately alkaline.

Bt horizons
Hue: 7.5YR, 10YR. Value: 4 or 5 dry.
Chroma: 4 or 5.
Texture: Averages very gravelly clay or very gravelly clay loam.

Bkqm horizon
Other features: Indurated duripan overlying bedrock.

COMPETING SERIES: This is the Ackett and Trosi series.

Ackett soils have a calcic horizon above the pan, and in addition have bedrock at depths greater than 100 cm. Trosi soil lacks indurated bedrock underlying the duripan.

GEOGRAPHIC SETTING: Reina soils are on summits and side slopes of bench areas, small plateaus, and foothills. Reina soil formed in residuum derived from andesite, basalt, quartzite, and tuffs with a component of volcanic ash and loess. Slopes are 2 to 30 percent. Elevations are 1,525 to 1,830 meters. The mean annual temperature is 8 to 10 degrees C. Mean annual precipitation is 200 to 250 mm. Frost-free season is 90 to 110 days.

GEOGRAPHICALLY ASSOCIATED SOILS: These are Orovada and Trunk soils. Orovada soils are very deep and have a coarse-loamy control section. Trunk soils are moderately deep and have less than 35 percent rock fragments.

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

USE AND VEGETATION: Livestock grazing and wildlife habitat. The vegetation is mainly Wyoming big sagebrush, Douglas rabbitbrush, bluebunch wheatgrass, and Thurber needlegrass.

DISTRIBUTION AND EXTENT: East-central Nevada. Reina soils are of small extent. MLRA 24.

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

SERIES ESTABLISHED: Lander County, North Part, Nevada l985.

REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - The zone from the surface to 18 cm (A1 and A2 horizons).
Argillic horizon - The zone from 18 to 46 cm (Bt1 and Bt2 horizon).
Indurated duripan - The zone from 46 to 66 cm (Bkqm horizon).
Lithic contact - The boundary at about 66 cm (R layer).
Particle-size control section - The zone from 18 to 46 cm (Bt1 and Bt2 horizons).

---

National Cooperative Soil Survey
U.S.A.