LOCATION WILLYNAT NV
Established Series
Rev. GWM/PNL/RLB/JBF
12/2019
WILLYNAT SERIES
The Willynat series consists of very deep, well drained soils that formed in alluvium derived from quartz monzonite. Willynat soils are on fan remnants. Slopes are 4 to 15 percent. The mean annual precipitation is about 330 mm and the mean annual temperature is about 7 degrees C.
TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive, frigid Pachic Haploxerolls
TYPICAL PEDON: Willynat gravelly sandy loam--rangeland. (Colors are for dry soil unless otherwise noted.) The soil surface is partially covered with approximately 15 percent gravel.
A1--0 to 15 cm; grayish brown (10YR 5/2) gravelly sandy loam, very dark grayish brown (10YR 3/2) moist; moderate medium subangular blocky structure; soft, very friable, slightly sticky and nonplastic; many very fine and fine, few medium roots; few fine tubular, many very fine and fine interstitial pores; 20 percent gravel; neutral (pH 7.2); clear smooth boundary. (8 to 18 cm thick)
A2--15 to 46 cm; grayish brown (10YR 5/2) very gravelly sandy loam, very dark grayish brown (10YR 3/2) moist; moderate medium subangular blocky structure; soft, very friable, slightly sticky and nonplastic; many very fine and fine, few medium roots; many very fine and fine interstitial, few fine tubular pores; 50 percent gravel; slightly alkaline (pH 7.4); clear wavy boundary. (25 to 38 cm thick)
A3--46 to 69 cm; brown (10YR 5/3) very gravelly sandy loam, dark brown (10YR 3/3) moist; weak medium subangular blocky structure; soft, very friable, slightly sticky and nonplastic; many very fine, common fine and few medium roots; many very fine and fine interstitial, many fine tubular pores; 50 percent gravel; slightly alkaline (pH 7.5); clear wavy boundary. (18 to 30 cm thick)
A4--69 to 142 cm; brown (10YR 5/3) very gravelly coarse sandy loam, dark brown (10YR 3/3) moist; massive; slightly hard, friable, nonsticky and nonplastic; common very fine and fine roots; many very fine interstitial and many fine tubular pores; 40 percent gravel and 5 percent cobbles; slightly alkaline (pH 7.6); clear wavy boundary. (38 to 90 cm thick)
C--142 to 152 cm; very pale brown (10YR 7/4) very gravelly coarse sandy loam, brown (10YR 5/3) moist; massive; slightly hard, friable, nonsticky and nonplastic; few very fine and fine roots; common very fine and fine tubular, many fine interstitial pores; 45 percent gravel and 10 percent cobbles; slightly alkaline (pH 7.8).
TYPE LOCATION: White Pine County, Nevada; approximately 2 miles south along Rock Springs Rd. from the intersection of Pleasant Valley Rd.; about 2,350 feet west and 875 feet north of the southeast corner of Section 15, T. 21 N., R. 69 E.; USGS Blue Mass Canyon 7.5-minute topographic quadrangle; latitude 39 degrees 41 minutes 29 seconds N and longitude 114 degrees 09 minutes 45 seconds W; WGS84 Decimal Degrees 39.6913889 latitude, -114.1625000 longitude.
RANGE IN CHARACTERISTICS:
Soil moisture: Usually dry; moist in winter and spring, dry summer and fall except for 10 to 20 days cumulative between July and October due to convection storms; xeric moisture regime bordering on aridic.
Annual soil temperature: 6 to 8 degrees C.
Mollic epipedon thickness: 100 to 150 cm.
Particle-size control section - Clay content: 5 to 15 percent.
Rock fragments: 35 to 60 percent, mainly 2 to 5 mm diameter gravel.
A horizons
Value: 4 or 5 dry, 2 or 3 moist.
C horizon (when present)
Value: 6 or 7 dry, 4 or 5 moist.
Clay content: 5 to 15 percent.
Rock fragments: 35 to 60 percent, mainly 2 to 5 mm diameter gravel.
COMPETING SERIES: These are the
Baldridge,
Beehunt,
Burgi,
Chambeam,
Climine,
Ginser,
Glean,
Lambring,
Lonecabin,
Pinochle,
Rondowa,
Shorthike,
Sinker,
Smidale,
Webfoot, and
Westbutte series.
Baldridge,
Beehunt
Burgi,
Chambeam,
Climine,
Ginser,
Pinochle,
Lambring,
Sinker,
Smidale and
Westbutte soils contain more than 18 percent clay in the particle-size control section.
Glean soils have bedrock at 100 to 176 cm and rock fragments consist of gavel, cobble and stones.
Lonecabin,
Rondowa,
Shorthike and
Webfoot soils have mollic epipedons less than 100 cm thick.
GEOGRAPHIC SETTING: Willynat soils are on upper fan remnants. These soils formed in alluvium derived from quartz monzonite. Slopes are 4 to 15 percent. Elevations are 1,925 to 2,625 meters. The climate is cool, semiarid with warm dry summers and cool moist winters. The mean annual precipitation is 300 to 360 mm, mean annual temperature is 6 to 8 degrees C, and the frost-free season is 60 to 80 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Bluemass,
Snapeed,
Zafod, and
Gremmers soils. Bluemass soils are shallow to a strongly cemented duripan. Snapeed soils are moderately deep to a lithic contact. Zafod soils are moderately deep to a duripan and lack a mollic epipedon. Gremmers soils lack a mollic epipedon.
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Well drained; very low and low runoff; high saturated hydraulic conductivity.
USE AND VEGETATION: Rangeland and wildlife habitat. The present vegetation is mainly mountain big sagebrush, antelope bitterbrush, bluebunch wheatgrass, Thurber needlegrass, needleandthread, and muttongrass.
DISTRIBUTION AND EXTENT: Eastern Nevada. These soils are not extensive. MLRA 28A.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Davis, California
SERIES ESTABLISHED: White Pine County, Nevada, East Part, 2004.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Mollic epipedon(Pachic) - The zone from the surface to 142 cm (The A1, A2, A3 and A4 horizons).
Particle-size control section - The zone from 25 to 100 cm (The A3 and parts of the A2 and A4 horizons).
National Cooperative Soil Survey
U.S.A.