LOCATION FAWIN NV
Established Series
Rev: SES/JBF
01/2023
FAWIN SERIES
The Fawin series consists of very deep, well drained soils that formed from sandy alluvium derived from mixed rocks. Fawin soils are on mountain valleys, alluvial flats, fan skirts and fan aprons. Slopes are 0 to 8 percent. The mean annual precipitation is about 180 mm and the mean annual temperature is about 12 degrees C.
TAXONOMIC CLASS: Sandy, mixed, mesic Typic Haplocambids
TYPICAL PEDON: Fawin loamy fine sand--rangeland. (Colors are for dry soil unless otherwise noted.)
A1--0 to 5 cm; light gray (10YR 7/2) loamy fine sand, brown (10YR 4/3) moist; moderate medium platy structure; soft, very friable, nonsticky and nonplastic; very few micro roots; many very fine interstitial and few fine tubular pores; moderately alkaline (pH 8.0); clear smooth boundary. (3 to 8 cm thick)
A2--5 to 13 cm; light gray (10YR 7/2) fine sandy loam, brown (10YR 4/3) moist; weak thin and medium platy structure parting to weak fine subangular blocky; soft, very friable, nonsticky and nonplastic; common very fine and fine roots; many very fine vesicular and common very fine and fine tubular pores; moderately alkaline (pH 8.4); clear smooth boundary. (5 to 10 cm thick)
Bw--13 to 28 cm; pale brown (10YR 6/3) fine sandy loam, brown (10YR 4/3) moist; weak medium subangular blocky structure; soft, very friable, nonsticky and nonplastic; many very fine, fine, and medium roots; many very fine and fine interstitial and common very fine and fine tubular pores; l0 percent gravel; strongly effervescent; moderately alkaline (pH 8.4); clear smooth boundary. (15 to 30 cm thick).
Bk--28 to 86 cm; pale brown (10YR 6/3) loamy sand, brown (10YR 5/3) moist; massive; soft, very friable, nonsticky and nonplastic; many very fine and fine roots; many very fine and fine interstitial and common very fine and fine tubular pores; l0 percent gravel; violently effervescent; strongly alkaline (pH 8.6); gradual smooth boundary. (40 to 56 cm thick)
2Bk--86 to 152 cm; pale brown (10YR 6/3) gravelly coarse sand, brown (10YR 5/3) moist; single grained; loose, nonsticky and nonplastic; many very fine and fine roots; many fine and medium interstitial pores; 25 percent gravel; violently effervescent; strongly alkaline (pH 8.6); (56 to 70 cm thick)
TYPE LOCATION: Mineral County Nevada; about 900 feet north and 200 feet west of the northeast corner of section 35, T. 10 N., R. 32 E.; latitude 38 degrees, 40 minutes, 12 seconds N and longitude 118 degrees, 24 minutes, 48 seconds W; WGS84 Decimal Degrees 2007NV021051 latitude, -118.375556 longitude.
RANGE IN CHARACTERISTICS:
Soil moisture: Usually dry, moist in some part for short periods during winter and early spring, and for l0 to 20 days in cumulative between July and October due to convection storms; typic aridic soil moisture regime.
Mean annual soil temperature: 12 to 15 degrees C.
Depth to 2B horizon: 64 to 100 cm.
Particle-size control section - Clay content: Averages 5 to 10 percent.
Rock fragments: Less than 15 percent, dominantly gravel.
A horizon
Value: 6 or 7 dry, 4 or 5 moist.
Chroma: 2 or 3.
Bw horizon
Value: 6 or 7 dry, 4 or 5 moist.
Chroma: 2 or 3.
Texture: Fine sandy loam or sandy loam.
Clay content: 8 to 18 percent.
Structure: Weak or moderate subangular blocky.
Carbonates: 5 to 8 percent calcium carbonate equivalent by weight.
Noneffervescent through strongly effervescent increasing with depth.
Reaction: Slightly alkaline through strongly alkaline.
Rock fragments: 0 to 15 percent.
Bk horizon Value
6 or 7 dry, 4 or 5 moist.
Chroma: 2 or 3.
Texture: Sand or loamy sand.
Clay percent: 5 to 10 percent.
Structure: Massive or single grained.
Carbonates: l0 to 15 percent calcium carbonate equivalent by weight.
Effervescence: Strongly effervescent to violently effervescent (lime coating the bottoms of gravel).
Reaction: Moderately alkaline or strongly alkaline.
Rock fragments: 0 to 15 percent.
2B horizon
Value: 6 or 7 dry, 4 or 5 moist.
Chroma: 2 or 3.
Texture: Gravelly coarse sand, gravelly loamy sand, or gravelly sand.
Reaction: Moderately alkaline or strongly alkaline.
Carbonates: 1 to 5 percent calcium carbonate equivalent by weight.
Effervescence: Strongly effervescent or violently effervescent.
Rock fragments: 15 to 35 percent.
COMPETING SERIES: This is the
Eastgate series. Eastgate soils have a particle-size control section that averages more than l5 percent gravel, with an unconformable C horizon that averages more than 35 percent rock fragments.
GEOGRAPHIC SETTING: Fawin soils are on nearly level to moderately sloping mountain valley alluvial flats, fan skirts and fan aprons. Elevations are 1,707 to 2,043 meters. Slopes are 0 to 8 percent. These soils formed in sandy alluvium derived from mixed rocks. The mean annual precipitation is 150 to 200 mm, mean annual temperature is 10 to 12 degrees C, and the frost-free season is l00 to l30 days.
GEOGRAPHICALLY ASSOCIATED SOILS: This is the
Crunker soils. Crunker soils have more than 35 percent gravel in the control section.
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Well drained; high saturated hydraulic conductivity.
USE AND VEGETATION: Rangeland and wildlife habitat. The present vegetation is mainly winterfat, bud sagebrush, and Indian ricegrass.
DISTRIBUTION AND EXTENT: West-central Nevada. The series is of small extent.
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 Bw horizons).
Cambic horizon - The zone from about 13 to 18 cm (Bw horizon).
Calcic horizon - The zone from about 28 to 86 cm (Bk horizon).
Particle-size control section - The zone from about 25 to 100 cm (Bk and part of the Bw and 2Bk horizons).
ADDITIONAL DATA: Previous editors and authors include: DJM/EWB/WED.
National Cooperative Soil Survey
U.S.A.