LOCATION CHUCKRIDGE              NV

Established Series
Rev. DJM-EWB-WED-JBF
05/2016

CHUCKRIDGE SERIES

The Chuckridge series consists of shallow and very shallow over a duripan, well drained soils that formed in alluvium derived from basalt, rhyolite and rhyolitic tuffs. They are on fan piedmonts, fan remnants, and beach plains. Slopes are 0 to 30 percent. The mean annual precipitation is about 250 mm and the mean annual temperature is about 12 degrees C.

TAXONOMIC CLASS: Loamy, mixed, superactive, mesic, shallow Xeric Argidurids

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

A--0 to 5 cm; pale brown (10YR 6/3) gravelly sandy loam, dark grayish brown (10YR 4/2) moist; weak thin platy structure; soft, very friable, nonsticky and nonplastic; many micro roots; many very fine interstitial and common very fine tubular pores; 30 percent gravel; moderately alkaline (pH 8.0); clear smooth boundary. (3 to 15 cm thick)

Bt--5 to 13 cm; pale brown (10YR 6/3) gravelly loam, dark brown to brown (10YR 4/3) moist; strong fine to medium subangular blocky structure parting to strong very fine subangular blocky; slightly hard, friable, slightly sticky and slightly plastic; common very fine and fine, and few medium roots; common very fine and fine interstitial, and common fine tubular pores; 20 percent gravel; common distinct clay films lining pores; moderately alkaline (pH 8.0); clear smooth boundary. (5 to 13 cm thick)

Btqk--13 to 30 cm; pale brown (10YR 6/3) gravelly loam, dark yellowish brown (10YR 4/4) moist; moderate fine subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; many very fine and fine, and few medium roots; many very fine and fine interstitial, and common fine tubular pores; 30 percent gravel, and 20 percent moderately cemented duripan fragments; common faint clay films lining pores and on faces of peds; strongly effervescent; secondary calcium carbonate pendants on the bottom of gravel; moderately alkaline (pH 8.4); clear wavy boundary. (0 to 18 cm thick)

Bqkm1--30 to 41 cm; very pale brown (10YR 8/2) cemented material, very pale brown (10YR 7/3) moist; 20 percent gravel and 10 percent cobbles; indurated duripan with continuous 0.3 cm laminar plates; violently effervescent; strongly alkaline (pH 9.0); clear wavy boundary. (8 to 20 cm thick)

Bqkm2--41 to 66 cm; light gray (10YR 7/2) cemented material, pale brown (10YR 6/3) moist; 40 percent gravel and 10 percent cobbles; strongly cemented duripan; violently effervescent; very strongly alkaline (pH 9.1); clear wavy boundary. (18 to 124 cm thick)

Bqk--66 to 152 cm; very pale brown (10YR 7/3) discontinuous strongly to weakly silica cemented very gravelly sandy loam, yellowish brown (10YR 5/4) moist; massive; slightly hard, very friable, nonsticky and nonplastic; common fine interstitial pores; 45 percent gravel, 10 percent cobbles; violently effervescent; very strongly alkaline (pH 9.1).

TYPE LOCATION: Mineral County, Nevada, about 1,320 feet east and 1,320 feet south of the northwest corner of section 31, T. 10 N., R. 33 E., approximately 1,700 feet north on the fence line road from the northern-most cattle guard west of Win Wan Flat. latitude 38 degrees 40 minutes 56 seconds N and longitude 118 degrees 20 minutes 46 seconds W; WGS84 Decimal Degrees 38.6823333 latitude, -118.346111 longitude.

RANGE IN CHARACTERISTICS:
Soil moisture: Moist in winter and spring, dry in summer and fall except for 10 to 20 cumulative days between July and September due to convection storms; aridic soil moisture regime that borders on xeric.
Mean annual soil temperature: 12 to 15 degrees C.
Depth to duripan: 18 to 36 cm.
Effervescence: Noneffervescent or slightly effervescent in the upper part, strongly effervescent or violently effervescent in the lower part.

Particle-size control section - Clay content: 22 to 32 percent.
Rock fragments: 15 to 35 percent dominantly gravel.

A horizon
Value: 6 or 7 dry, 4 or 5 moist.
Chroma: 2 or 3, dry or moist.
Reaction: Slightly alkaline or moderately alkaline.

Bt and Btqk horizons
Hue: 10YR or 7.5YR.
Value: 5 through 8 dry, 4 through 7 moist.
Chroma: 2 through 4, dry or moist.
Texture: Gravelly loam, gravelly clay loam, or gravelly sandy clay loam.
Clay content: 25 to 35 percent.
Rock fragments: 15 to 35 percent, predominantly gravel and weathered duripan fragments.
Structure: Strong or moderate subangular blocky or platy.
Consistence: Slightly hard or hard dry, slightly sticky or moderately sticky and slightly plastic or moderately plastic wet.
Reaction: Slightly alkaline to strongly alkaline.

Bqkm horizons
Value: 7 or 8 dry, 5 through 7 moist.
Chroma: 2 or 3, dry or moist.
Rock fragments: 30 to 60 percent, predominantly gravel, with 10 to 30 percent cobbles in some pedons.
Cementation: Indurated duripan with 0.16 to 0.32 cm silica laminae. The lower portion of the duripan is strongly cemented with discontinuous silica laminae coating and bridging rock fragments.

Bqk horizon (when present)
Value: 6 or 7 dry, 4 or 5 moist.
Chroma: 3 or 4, dry or moist.
Texture: Very gravelly loamy sand or very gravelly sandy loam.
Clay content: 8 to 18 percent.
Rock fragments: 35 to 60 percent, predominantly gravel.
Reaction: Strongly alkaline or very strongly alkaline.
Cementation: Discontinuous strong and weak silica cementation with secondary calcium carbonate and silica pendants on the bottom of rock fragments.

COMPETING SERIES: These are the Argalt, Bigfrog, Bruncan, Chuska, Colthorp, Dewar, Grassval, Handpah, Minu, Packwood, Pipeline, Roseworth, Roval, Thoms, and Wellington series.

Argalt, Bruncan, Colthorp, and Packwood soils have bedrock within 100 cm. Handpah, Minu and Roval soils have a duripan at a depth of 36 to 50 cm. Bigfrog soils have a mean annual soil temperature of 8 to 11 degrees C. and a frost free period of 80 to 100 days. Chuska soils have bedrock at 100 to 150 cm and soil temperature of less than 10 degrees C. Dewar and Grassval soils lack durinodes, are not moist for 10 to 20 days in summer, and have mean annual soil temperature of less than 10 degrees C. Pipeline and Roseworth soils have less than 15 percent fine sand or coarser in the Bt horizon and are silt loam or silty clay loam. Thoms and Wellington soils are slightly acid or neutral above the duripan and are not moist for 10 to 20 days in the summer.

GEOGRAPHIC SETTING: Chuckridge soils are on fan piedmonts, fan remnants and beach plains. These soils formed in alluvium derived predominantly from basalt, rhyolite and rhyolitic tuffs. Slopes are 0 to 30 percent. Elevations are 1,295 to 2,135 meters. The mean annual temperature ranges from 10 to 12 degrees C, mean annual precipitation ranges from 200 to 300 mm, and the frost-free season is 100 to 130 days.

GEOGRAPHICALLY ASSOCIATED SOILS: This is the Crunker series. Crunker soils lack an argillic horizon and a duripan.

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Well drained; low through high runoff; moderately high saturated hydraulic conductivity.

USE AND VEGETATION: The Chuckridge soils are used for livestock grazing and wildlife habitat. The present vegetation is mainly black sagebrush, Nevada ephedra, Bailey greasewood, spiny hopsage, bottlebrush squirreltail, Sandberg bluegrass and galleta.

DISTRIBUTION AND EXTENT: West-central Nevada. These soils are not extensive. MLRA 27, 28B, 28A and 29.

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 soil surface to 5 cm (A horizon).
Argillic horizon - The zone from 5 to 30 cm (Bt and Btqk horizons).
Indurated duripan - The zone from 30 to 41 cm, strongly cemented from 41 to 66 cm (Bqkm1 and Bqkm2 horizons).
Particle-size control section - The zone from 0 to 30 cm (A, Bt, and Btqk horizons).

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National Cooperative Soil Survey
U.S.A.