LOCATION LABSHAFT NV
Established Series
Rev: RAF/RLB/JBF
11/2016
LABSHAFT SERIES
The Labshaft series consist of shallow, well drained soils that formed in residuum and colluvium derived from siliceous and volcanic rocks. Labshaft soils are on mountain side slopes. Slopes are 15 to 75 percent. The mean annual precipitation is about 360 mm and the mean annual temperature is about 6 degrees C.
TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive Lithic Haplocryolls
TYPICAL PEDON: Labshaft very stony loam--rangeland. (Colors are for dry soil unless otherwise noted.) The soil surface is covered with 15 percent stones.
A--0 to 13 cm; brown (10YR 5/3) very stony loam, dark brown (10YR 3/3) moist; weak very fine granular structure; soft, very friable, moderately sticky and slightly plastic; many fine and very fine roots; many very fine interstitial pores; 25 percent gravel and 15 percent stones; neutral (pH 7.0); clear smooth boundary. (10 to 20 cm thick)
Bw--13 to 28 cm; brown (10YR 5/3) very gravelly loam, dark brown (10YR 3/3) moist; moderate fine angular blocky structure; slightly hard, friable, moderately sticky and moderately plastic; common fine and very fine roots; many very fine interstitial pores; 40 percent gravel, 5 percent cobbles, and 5 percent stones; neutral (pH 7.0); abrupt wavy boundary. (15 to 36 cm thick)
R--28 cm; quartzite.
TYPE LOCATION: Eureka County, Nevada, approximately 8 miles southwest of Eureka in the Fish Creek Range; about 2,600 feet east and 1,000 feet north of the southwest corner of section 24, T. 18 N., R. 52 E.; USGS Spring Valley Summit 7.5 minute topographic quadrangle; latitude 39 degrees 24 minutes 50 seconds N and longitude 116 degrees 4 minutes 0 seconds W; WGS84 Decimal Degrees 39.4138889 latitude, -116.0666667 longitude.
RANGE IN CHARACTERISTICS:
Soil moisture: Usually dry, moist winter and early spring, xeric soil moisture regime bordering on aridic.
Mean annual soil temperature: 6 to 8 degrees C.
Average summer soil temperature: 12 to 15 degrees C.
Mollic epipedon thickness: 18 to 36 cm and commonly includes part or all of Bw horizon.
Depth to bedrock: 25 to 50 cm.
Reaction: Slightly acid or neutral.
Particle-size control section - Clay content: Average 22 to 35 percent.
Rock fragments: Average 40 to 70 percent, mostly gravel.
A Horizon
Value: 4 or 5 dry, 2 or 3 moist.
Chroma: 2 or 3.
Bw horizon
Value: 5 or 6 dry, 2 or 3 moist.
Chroma: 2 through 4.
Texture: Loam, clay loam, or sandy clay loam.
Clay content: Average 25 to 35 percent.
Modifiers: Very gravelly, extremely gravelly, very cobbly or very stony.
Structure: Angular blocky or subangular blocky.
Consistence: Soft or slightly hard, very friable or friable, slightly sticky or sticky and slightly plastic or plastic.
COMPETING SERIES: These are the
Arrowpeak,
Betemer,
Cheadle,
Clamp,
Dalys,
Dollarhide,
Eyre,
Irigul,
Irson,
Jonlake,
Mccadden,
Milling,
Poin,
Rogert,
Schwacheim,
Starley,
Topeki,
Trump and
Udel soils.
Arrowpeak and
Schwacheim soils an udic moisture regime.
Betemer soils have an ustic moisture regime.
Cheadle,
Starley and
Trump soils have accumulation of carbonates above the bedrock.
Clamp soils do not have a Bw horizon and are 10 to 30 cm to lithic contact.
Dalys,
Dollarhide,
Poin and
Rogert soils have less than 18 percent clay in their particle-size control section.
Eyre,
Irigul,
Jonlake,
Mccadden,
Irson,
Topeki and
Udel soils do not have Bw horizons.
Milling soils have Bw with less than 25 percent clay basalt bedrock and have average annual precipitation of 900 to 1400 mm.
GEOGRAPHIC SETTING: Labshaft soils are mountains side slopes. These soils formed in residuum and colluvium derived from dominantly siliceous rocks. Slopes are 15 to 75 percent. Elevations are 2,290 to 3,050 meters. The climate is cool, semi-arid with cool, moist winters and warm, dry summers. The mean annual precipitation is 300 to 400 mm, which comes mostly as snow; mean annual temperature is 5 to 7 degrees C, and the frost-free season is about 45 to 50 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Spinlin and
Winu soils. Both of these soils have an argillic horizon.
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Well drained; medium or rapid runoff; moderately high saturated hydraulic conductivity.
USE AND VEGETATION: Livestock grazing and wildlife habitat. The present vegetation is mainly sparse stand of curlleaf mountainmahogany with understory of mountain big sagebrush.
DISTRIBUTION AND EXTENT: Central and northeastern Nevada. These soils are moderately extensive. MLRA 25, 28B.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Davis, California
SERIES ESTABLISHED: Eureka County (Diamond Valley Area), Nevada, 1971.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Mollic epipedon - The zone from the soil surface to about 28 cm (A and Bw horizons).
Bw horizon - The zone from about 13 to 28 cm (excluded from cambic because of mollic properties).
Lithic contact - The boundary at about 28 cm (R layer).
Particle-size control section - The zone from the soil surface to about 28 cm (A and Bw horizons).
National Cooperative Soil Survey
U.S.A.