LOCATION WILLYNAT NVEstablished Series
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 pebbles.
A1--0 to 6 inches; 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, fine and few medium roots; few fine tubular, many very fine and fine interstitial pores; 20 percent pebbles; neutral (pH 7.2); clear smooth boundary. (3 to 7 inches thick.)
A2--6 to 18 inches; 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, fine and few medium roots; many very fine and fine interstitial, few fine tubular pores; 50 percent pebbles; slightly alkaline (pH 7.4); clear wavy boundary. (10 to 15 inches thick.)
A3--18 to 27 inches; 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, few medium roots; many very fine and fine interstitial, many fine tubular pores; 50 percent pebbles; slightly alkaline (pH 7.5); clear wavy boundary. (7 to 12 inches thick.)
A4--27 to 56 inches; 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 pebbles, 5 percent cobbles; slightly alkaline (pH 7.6); clear wavy boundary. (15 to 35 inches thick.)
C--56 to 60 inches; 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, fine tubular, and many fine interstitial pores; 45 percent pebbles, 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 2350 feet west and 875 feet north of the southeast corner of Sec. 15, T. 21 N., R. 69 E.; 39 degrees, 41 minutes, 29 seconds north latitude and 114 degrees, 09 minutes, 45 seconds west 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.
Annual soil temperature - 43 to 47 degrees F.
Mollic epipedon thickness - 40 to 60 inches.
Control section - Clay content: 5 to 15 percent.
Rock fragments: 35 to 60 percent, mainly 2 to 5 mm diameter pebbles.
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 pebbles.
COMPETING SERIES: These are the Baldridge (OR), Burgi (UT), Chambeam (OR), Climine (NV), Fredonyer (CA), Ginser (OR), Glean (CA), Lambring (OR), Rondowa (T OR), Sinker (OR), St. Anthony (ID), Webfoot (OR), Westbutte (OR) series. Baldridge, Burgi, Chambeam, Climine, Fredonyer, Ginser and Lambring soils contain 18 to 30 percent clay in the particle size control section. Climine soils also have additions of loess high in volcanic ash which aids in the formation of durinodes and silica pendants. Glean soils have bedrock at 40 to 70 inches and rock fragments consist of gavel, cobble and stones. Ginser, Sinker and Westbutte soils are moderately deep to bedrock and contain more than 20 percent clay. St. Anthony and Webfoot soils have mollic epipedons that are 20 to 40 inches thick. Rondowa soils have mollic epipedons that are 20 to 30 inches thick.
GEOGRAPHIC SETTING: Willynat soils are on upper fan remnants. These soils formed in alluvium from quartz monzonite. Slopes are 4 to 15 percent. Elevations are 6,300 to 8,600 feet. The climate is cool, semiarid with warm dry summers and cool moist winters. The mean annual precipitation is 12 to 14 inches; mean annual temperature is 43 to 47 degrees F., 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 PERMEABILITY: Well drained; very low and low runoff; moderately rapid permeability.
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 OFFICE RESPONSIBLE: Reno, Nevada
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 56 inches (A1, A2, A3 and A4 horizons).
Particle-size control section - The zone from 10 to 40 inches. (A2, A3 and A4 horizons).
The superactive cation exchange activity class was added in 03/2003 to the taxonomic classification by the National Soil Survey Center on request of the Reno MLRA office, without review of the soil series property data. The remainder of this document has not been updated.