LOCATION WAMBOLT NV
Established Series
Rev. JFH-TM-JVC-JBF
12/2022
WAMBOLT SERIES
The Wambolt series consists of very deep, well drained soils that formed in colluvium and alluvium derived from quartzite. Wambolt soils are on mountains and upper fan remnants. Slopes are 8 to 30 percent. The mean annual precipitation is about 380 mm and the mean annual temperature is about 6 degrees C.
TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive, frigid Typic Argixerolls
TYPICAL PEDON: Wambolt extremely gravelly loam--mountainmahogany savanna. (Colors are for dry soil unless otherwise noted.)
A--0 to 25 cm; brown (10YR 4/3) extremely gravelly loam, dark brown (10YR 3/3) moist; weak medium subangular blocky structure; soft, very friable, slightly sticky and slightly plastic; common very fine and fine, and few medium and coarse roots; many very fine and fine, and common medium tubular pores; 50 percent gravel, 20 percent cobbles, and 5 percent stones; neutral (pH 6.6); clear wavy boundary. (20 to 30 cm thick)
Bt1--25 to 51 cm; yellowish brown (10YR 5/4) extremely gravelly clay loam; dark yellowish brown (10YR 4/4) moist; weak medium subangular blocky structure; slightly hard, friable, slightly sticky and moderately plastic; common very fine and fine, and few medium roots; many very fine and fine tubular pores; few faint clay films on faces of peds; 55 percent gravel, 20 percent cobbles, and 5 percent stones; neutral (pH 6.6); clear wavy boundary. (20 to 30 cm thick)
Bt2--51 to 91 cm; light brown (7.5YR 6/4) extremely gravelly clay loam, brown (7.5YR 5/4) moist; moderate very fine subangular blocky structure; hard, firm, moderately sticky and moderately plastic; common very fine and fine roots; common very fine and fine tubular pores; many prominent and distinct red (2.5YR 5/6) clay films on faces of peds; 60 percent gravel, 15 percent cobbles, and 10 percent stones; neutral (pH 6.8); clear wavy boundary. (20 to 45 cm thick)
C--91 to 152 cm; light brown (7.5YR 6/4) extremely gravelly sandy loam; brown (7.5YR 5/4) moist; massive; soft, very friable, nonsticky and nonplastic; few very fine and fine roots; 60 percent gravel, 20 percent cobbles, and 5 percent stones; neutral (pH 6.6).
TYPE LOCATION: Lincoln County, Nevada; about 2.9 miles northeast of Cave Spring along a jeep trail; about 1,200 feet north and 1,400 feet east of the southwest corner of section 2, T. 9 N., R. 64 E.; USGS Parker Station 7.5 minute topographic quadrangle; latitude 38 degrees 39 minutes 48 seconds N and longitude 114 degrees 45 minutes 56 seconds W; NAD 83.
RANGE IN CHARACTERISTICS:
Soil moisture: Moist in winter and spring, and intermittently moist for 10 to 20 cumulative days in the upper part of the moisture control section during July through September due to convection storms; xeric soil moisture regime that borders on aridic.
Mean annual soil temperature: 6 to 8 degrees C.
Mollic epipedon thickness: 25 to 48 cm; includes the Bt1 horizon in some pedons.
Reaction: Neutral or slightly alkaline.
Particle-size control section - Clay content: 27 to 35 percent.
Rock fragments: 60 to 85 percent, mainly gravel. Lithology of fragments is mainly quartzite.
A horizon
Value: 4 or 5 dry, 2 or 3 moist.
Chroma: 1 through 3, dry or moist.
Organic matter content: 2 to 4 percent.
Bt horizons
Hue: 10YR or 7.5YR in interiors of peds; 2.5YR through 10YR for clay films on faces of peds.
Value: 5 or 6 dry, 3 through 5 moist.
Chroma: 2 through 6, dry or moist.
Structure: Angular blocky or subangular blocky.
Organic matter content: 0.5 to 1 percent.
Other features: Texture of extremely gravelly clay is in the Bt2 horizons of some pedons.
C horizon
Hue: 10YR or 7.5YR.
Value: 5 or 6 dry, 4 through 6 moist.
Chroma: 4 through 6, dry or moist.
Clay content: 5 to 15 percent.
Rock fragments: 60 to 85 percent, mainly gravel.
COMPETING SERIES: These are the
Clanalpine,
Devaul,
Elaero,
Glideski,
Heechee,
Heenlake,
Holmes,
Horrocks,
Hoskin,
Howcan,
Longday,
Pequop,
Moreypeak,
Suak,
Valmar, and
Vitale series.
Clanalpine,
Elaero,
Heenlake,
Moreypeak,
Suak, and
Vitale soils are moderately deep to paralithic contacts, and except for Moreypeak are not intermittently moist for 10 to 20 days cumulative between July and September due to convection storms.
Devaul soils are deep to paralithic contacts and are not intermittently moist for 10 to 20 days cumulative between July and September due to convection storms.
Heechee and
Holmes soils have 35 to 60 percent rock fragments in the particle-size control section.
Horrocks soils are deep to lithic contacts.
Hoskin and
Valmar soils are moderately deep to lithic contacts.
Howcan soils have 40 to 60 percent rock fragments, mainly cobbles, in the particle-size control section. Glidski and
Longday soils average less than 27 percent clay in the particle-size control section.
Pequop soils are not moist in the upper part of the moisture control section for 10 to 20 days cummulative from precipitation received between July and September.
GEOGRAPHIC SETTING: Wambolt soils are on north aspects of mountains and upper fan remnants. These soils formed in colluvium and alluvium derived from quartzite. Slopes are 8 to 30 percent. Elevations range from 1,985 to 2,595 meters. The climate is semiarid with cold, moist winters and warm, dry summers. The mean annual precipitation is 360 to 410 mm, mean annual temperature is 4 to 7 degrees C, and the frost-free period is 70 to 90 days.
GEOGRAPHICALLY ASSOCIATED SOILS: This is the competing
Suak soil. Suak soils are moderately deep to a lithic contact.
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Well drained; very high surface runoff; moderately high saturated hydraulic conductivity class.
USE AND VEGETATION: Wambolt soils are used for livestock grazing and wildlife habitat. The potential native vegetation is mainly a savanna of curlleaf mountainmahogany with an understory of mountain big sagebrush, muttongrass, and needlegrass. This pedon is correlated to Ecological Site R028AY059NV, Mahogany Savanna.
DISTRIBUTION AND EXTENT: Eastern Nevada. These soils are not extensive. MLRAs 28A.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Phoenix, Arizona.
SERIES ESTABLISHED: Lincoln County, Nevada, North Part, 1993. The name is from Wambolt Creek.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Mollic epipedon - The zone from the soil surface to 25 cm (A horizon).
Argillic horizon - The zone from 25 to 91 cm (Bt1 and Bt2 horizons).
Particle-size control section - The zone from 25 to 75 cm (Bt1 and the upper part of Bt2 horizons).
The Wambolt series was originally proposed in White Pine County, Nevada in 1982 and later dropped. It has been revised and proposed for use in Lincoln County.
National Cooperative Soil Survey
U.S.A.