LOCATION JURADO NV

Established Series
JWM/TM
03/2012

JURADO SERIES

The Jurado series consists of very deep, well drained soils that formed in alluvium derived mainly from quartzite. Jurado soils are on fan remnants. Slopes are 2 to 15 percent. The mean annual precipitation is about 180 mm and the mean annual temperature is about 13 degrees C.

TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive, mesic Typic Haplargids

TYPICAL PEDON: Jurado very cobbly sandy loam--rangeland. (Colors are for dry soil unless otherwise noted.)

A--0 to 13 cm; pale brown (10YR 6/3) very cobbly sandy loam, brown (10YR 5/3) moist; moderate thick platy structure parting to moderate very thin platy; soft, friable, slightly sticky and slightly plastic; common very fine and fine, and few medium roots; common very fine tubular and interstitial pores; few secondary calcium carbonate masses on bottom of rock fragments; 15 percent gravel and 20 percent cobbles; very slightly effervescent; moderately alkaline (pH 8.0); clear smooth boundary. (5 to 15 cm thick)

Bk--13 to 30 cm; pale brown (10YR 6/3) very cobbly sandy loam, brown (10YR 4/3) moist; moderate medium subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; common very fine and fine, and few medium roots; common very fine tubular pores; few secondary calcium carbonate masses on bottom of rock fragments; 25 percent gravel and 10 percent cobbles; very slightly effervescent; slightly alkaline (pH 7.8); gradual smooth boundary. (13 to 18 cm thick)

Btk1--30 to 66 cm; brown (10YR 5/3) extremely gravelly sandy clay loam, dark yellowish brown (10YR 4/4) moist; moderate medium and coarse subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; few very fine, fine and medium roots; common very fine tubular pores; common secondary calcium carbonate masses on the bottom of rock fragments; few faint clay films on ped faces; 55 percent gravel and 10 percent cobbles; slightly alkaline (pH 7.5); gradual smooth boundary. (10 to 36 cm thick)

Btk2--66 to 109 cm; yellowish brown (10YR 5/4) extremely gravelly clay loam, dark yellowish brown (10YR 4/6) moist; moderate medium and coarse angular blocky structure; very hard, firm, slightly sticky and moderately plastic; few very fine, fine and medium roots; common very fine tubular and interstitial pores; many secondary calcium carbonate masses around rock fragments and on faces of peds; common distinct clay films on faces of peds and bridging sand grains; 55 percent gravel and 10 percent cobbles; slightly effervescent; moderately alkaline (pH 8.0); gradual wavy boundary. (36 to 43 cm thick)

2Bk--109 to 152 cm; light brown (7.5YR 6/4) extremely cobbly sandy loam, strong brown (7.5YR 4/6) moist; massive; soft, very friable, nonsticky and nonplastic; few very fine and fine roots; common very fine interstitial pores; secondary calcium carbonate masses around rock fragments; 35 percent gravel and 50 percent cobbles; slightly alkaline (pH 7.5).

TYPE LOCATION: White Pine County, Nevada; 3 miles north of Baker, Nevada, 40 yards west of Highway 487; about 1600 feet south and 2300 feet west of the northeast corner of section 5, T. 13 N., R. 70 E.; USGS Lehman Caves 7.5 minute topographic quadrangle; latitude 39 degrees 01 minutes 53 seconds N and longitude 114 degrees 08 minutes 27 seconds W; NAD 83.

RANGE IN CHARACTERISTICS:
Soil moisture: Usually dry; moist in winter and spring and for 10 to 20 days cumulative between July and October due to convection storms; typic aridic soil moisture regime.
Mean annual soil temperature: 11 to 15 degrees C.
Depth to base of the argillic horizon: 64 to 112 cm.
Calcium carbonate equivalent: 0 to 5 percent.

Particle-size control section - Clay content: averages 27 to 35 percent.
Rock fragments: 35 to 65 percent, mainly gravel.

A horizon
Value: 5 or 6 dry, 4 or 5 moist.
Reaction: Neutral through moderately alkaline.
Effervescence: Very slightly effervescent or slightly effervescent.

Bk horizon
Value: 4 through 6 dry.
Clay content: 12 to 20 percent.
Rock fragments: 25 to 55 percent, mainly cobbles and gravel.
Effervescence: Noneffervescent through slightly effervescent.

Btk horizons
Value: 4 through 7 dry, 4 through 6 moist.
Chroma: 3 through 6 dry, 4 through 6 moist.
Texture: Clay loam or sandy clay loam.
Clay content: averages 27 to 35 percent.
Rock fragments: 35 to 65 percent, mainly gravel.
Reaction: Slightly alkaline or moderately alkaline.
Effervescence: Noneffervescent through strongly effervescent.

2Bk horizon
Hue: 10YR and 7.5YR
Reaction: Slightly alkaline through strongly alkaline.
Effervescence: Noneffervescent through slightly effervescent.

COMPETING SERIES: These are the Fireball, Minnye, Perazzo, Preatorson, Rednik, Stonell and Zaba series.

Fireball soils are deep to bedrock and have an exchangeable sodium percentage that is greater than 15. Minnye soils do not have rock fragments with quartzite lithology and are 25 to 60 cm to the base of the argillic horizon. Perazzo soils have 15 to 35 percent rock fragments in the upper part of the argillic horizon. Preatorson soils lack a Bk above the argillic horizon. Rednik and Zaba soils have an exchangeable sodium percentage that is greater than 15. Stonell soils have less than 18 percent clay in the particle-size control section.

GEOGRAPHIC SETTING: Jurado soils are on fan remnants. These soils formed from alluvium derived mainly from quartzite. Slopes are 2 to 15 percent. Elevations range from 1,620 to 2,045 meters. The climate is semiarid with cool, moist winters and warm, dry summers. The mean annual precipitation is 150 to 200 mm, the mean annual temperature is 10 to 14 degrees C, and the frost-free period is 100 to 120 days.

GEOGRAPHICALLY ASSOCIATED SOILS: These are Badena, Gravier, Summermute and Sycomat soils. Badena soils have a mollic epipedon. Gravier soils have a calcic horizon and do not have an argillic horizon. Summermute and Sycomat soils have calcic horizons and durinodes.

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

USE AND VEGETATION: Jurado soils are used for rangeland and wildlife habitat. The potential vegetation is mainly shadscale, bud sagebrush, Indian ricegrass, and galleta.

DISTRIBUTION AND EXTENT: Eastern Nevada. These soils are not extensive. MLRA 28A.

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Phoenix, Arizona.

SERIES ESTABLISHED: White Pine County, Nevada, East Part, 2004.

REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - The zone from the soil surface to 13 cm (A horizon).
Argillic horizon - 30 to 109 cm (Btk1 and Btk2 horizons).
Particle-size control section - The zone from 30 to 80 cm (Btk1 horizon and upper part of the Btk2 horizon).

National Cooperative Soil Survey
U.S.A.