LOCATION JACKPOT                 NV

Established Series
Rev. MDD-TSB-RLB-JBF
01/2019

JACKPOT SERIES

The Jackpot series consists of shallow, well drained soils that formed in residuum derived from ashy tuff. Jackpot soils are on rock pediments, side slopes of hills and fan piedmonts with a rock core. Slopes are 4 to 15 percent. The mean annual precipitation is about 230 mm and the mean annual temperature is about 8 degrees C.

TAXONOMIC CLASS: Ashy, glassy, mesic, shallow Vitrixerandic Haplocambids

TYPICAL PEDON: Jackpot ashy sandy loam--rangeland. (Colors are for dry soil unless otherwise noted.)

A--0 to 10 cm; brown (10YR 5/3) ashy sandy loam, brown (10YR 4/3) moist; weak thick platy structure; soft, very friable, nonsticky and nonplastic; few very fine roots; many very fine interstitial pores; 10 percent gravel; slightly alkaline (pH 7.8); clear smooth boundary. (10 to 15 cm thick)

Bw--10 to 28 cm; pale brown (10YR 6/3) ashy sandy loam, brown (10YR 4/3) moist; weak moderate subangular blocky structure; soft, very friable, nonsticky and nonplastic; common very fine and few fine roots; many very fine interstitial pores; 5 percent gravel; slightly alkaline (pH 7.8); abrupt wavy boundary; (15 to 36 cm thick)

Cr--28 cm; soft tuff.

TYPE LOCATION: Elko County, Nevada; approximately 10 miles south of Jackpot, Nevada, about 1,500 feet west and 2,000 feet north of the southeast corner, sec. 28, T. 46 N., R. 64 E.; USGS Middle Stack Mountain 7.5 minute topographic quadrangle; latitude 41 degrees 50 minutes 35.92 seconds N and longitude 114 degrees 43 minutes 16.00 seconds W; WGS84 Decimal Degrees 41.8433333 latitude, -114.7211111 longitude.

RANGE IN CHARACTERISTICS:
Soil moisture: Dry from June through October, but are moist in winter and spring; aridic soil moisture regime bordering on xeric.
Mean annual soil temperature: 8 to 10 degrees C.
Reaction: Neutral or slightly alkaline.
Pyroclastic material: 75 to 90 percent of the 0.02 to 2 mm fraction and 45 to 70 percent of the fine earth fraction.
Depth to bedrock: 25 to 50 cm.

Particle-size control section - Clay content: 5 to 10 percent.
Rock fragments: Up to 15 percent.

A horizon
Value: 5 or 6 dry, 3 or 4 moist.
Chroma: 2 or 3.

Bw horizon
Value: 6 or 7 dry, 4 or 5 moist.
Chroma: 3 or 4.

COMPETING SERIES: These are Pegler and Weash series.

Pegler and Weash soils have more than 10 percent clay in the particle-size control section.

GEOGRAPHIC SETTING: Jackpot soils are on rock pediments, side slopes of hill and fan piedmonts with a rock core. These soils formed in residuum derived from ashy tuff. Slopes are 4 to 15 percent. Elevations are 1,590 to 1,955 meters. The climate is cool semiarid with warm, dry summers and cool moist winters. Mean annual precipitation is 200 to 250 mm; mean annual temperature is 7 to 9 degrees C; and the frost-free season is 100 to 120 days.

GEOGRAPHICALLY ASSOCIATED SOILS: This is the Chuska soils. Chuska are less than 50 cm deep to a duripan.

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Well drained, medium runoff, moderately high saturated hydraulic conductivity.

USE AND VEGETATION: Livestock grazing and wildlife habitat. The principal vegetation is mainly Wyoming big sagebrush, Indian ricegrass, rabbitbrush, needleandthread and bottlebrush squirreltail.

DISTRIBUTION AND EXTENT: Northeast Nevada. These soils are not extensive. MLRA 25, 28B.

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Davis, California

SERIES ESTABLISHED: Elko County, Nevada, Northeast Part, 1986.

REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - The zone from the soil surface to 18 cm (A and part of Bw horizon).
Cambic horizon - The zone from 10 to 28 cm (Bw horizon).
Pyroclastic material - 75 to 90 percent of the 0.02 to 2 mm fraction and from 45 to 70 percent of the fine earth reaction.
Paralithic contact - The contact at 28 cm (Cr layer).
Particle-size control section - The soil surface to 28 cm (A and C horizons).

In 1992, the classification was changed from Ashy, nonacid, mesic, shallow Xeric Torriorthents to Ashy, mesic, shallow Vitrixerandic Camborthids.

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National Cooperative Soil Survey
U.S.A.