LOCATION EASTLAND                NV+AZ

Established Series
Rev. LNL/ELS/RPZ
04/2015

EASTLAND SERIES

The Eastland series consists of very deep, well drained soils formed in alluvium from mixed rock sources. Eastland soils are on erosional fan remnants. Slopes are 0 to 8 percent. The mean annual precipitation is about 5 inches and the the mean annual temperature is about 65 degrees F.

TAXONOMIC CLASS: Sandy-skeletal, mixed, thermic Typic Haplocalcids

TYPICAL PEDON: Eastland gravelly loamy sand, rangeland. (Colors are for dry soil unless otherwise noted.) About 60 percent of the soil surface is covered with pebbles.

A--0 to 1 inch; light brown (7.5YR 6/4) gravelly loamy sand, brown (7.5YR 4/4) moist; massive; soft, very friable, nonsticky and nonplastic; few very fine and fine roots; many fine, common medium vesicular pores, 25 percent pebbles; violently effervescent; moderately alkaline (pH 8.4); abrupt, smooth boundary. (l to 3 inches thick).

C1--1 to 17 inches; light brown (7.5YR 6/4) gravelly loamy sand, brown (7.5YR 4/4) moist; massive; soft, very friable, nonsticky and nonplastic; few very fine and fine roots; many very fine and fine tubular pores; 35 percent pebbles; violently effervescent; moderately alkaline (pH 8.4); abrupt smooth boundary. (4 to l8 inches thick)

C2--17 to 26 inches; light brown (7.5YR 6/4) extremely gravelly sand, brown (7.5YR 4/4) moist; massive; slightly hard, very friable, nonsticky and nonplastic; few very fine roots; many very fine and fine interstitial pores; 80 percent pebbles; violently effervescent; moderately alkaline (pH 8.4); abrupt smooth boundary. (2 to l2 inches thick)

C3--26 to 38 inches; light brown (7.5YR 6/4) loamy sand, brown (7.5YR 4/4) moist; massive; slightly hard, very friable, nonsticky and nonplastic; few very fine roots; few very fine and fine tubular pores; l0 percent pebbles; violently effervescent; moderately alkaline (pH 8.2); clear wavy boundary. (6 to 18 inches thick)

Ck1--38 to 52 inches; pink (7.5YR 8/4) weakly lime-cemented sandy loam, light brown (7.5YR 6/4) moist; massive; very hard, friable, slightly sticky, slightly plastic; few very fine tubular pores; violently effervescent; strongly alkaline (pH 8.6); clear wavy boundary. (10 to 20 inches thick)

Ck2--52 to 60 inches; pink (7.5YR 8/4) very weakly lime-cemented gravelly loamy sand, light brown (7.5YR 6/4) moist; massive; slightly hard, very friable; many very fine and fine interstitial pores; 25 percent pebbles; violently effervescent; moderately alkaline (pH 8.2).

TYPE LOCATION: Clark County, Nevada; about 500 feet south and 300 feet east of the northwest corner of section l7, T. l3 S., R. 70 E.

RANGE IN CHARACTERISTICS:

Soil moisture: Usually dry. Moist for short periods throughout the moisture control section December through March. Moist above and periodically in upper part of moisture control section l to l0 days cumulative, June through August. Soil temperature: 64 to 7l degrees F. (average annual) Control section Texture of fine earth: Stratified, but averages loamy sand. Percent clay: 3 to l0, by average. Rock fragments: 35 to 60, by average, dominantly pebbles. Depth to calcic horizon: 30 to 40 inches. Thickness of calcic horizon. l8 to 36 inches. Reaction: Moderately alkaline or strongly alkaline, commonly highest in the calcic horizon. C horizon Hue: 10YR or 7.5YR. Value: 6 or 7 dry, 4 or 5 moist. Chroma: 2, 3, or 4.

Ck horizon Hue: 10YR or 7.5YR. Value: 6 through 8 dry, 4 through 6 moist. Chroma: l through 4. Consistence: Hard or very hard dry, friable or firm moist. Other features: Weak lime cementation, commonly with discontinuous strongly cemented lenses.

COMPETING SERIES: These are the Caliza and Tonopah series. Caliza soils have a calcic horizon at a depth between l and l8 inches. Tonopah soils have a calcic horizon at a depth between l8 and 30 inches.

GEOGRAPHIC SETTING: Eastland soils are on erosional fan remnants. These soils formed in alluvium from mixed rock sources. Slopes are 0 to 8 percent. Elevations are l,800 to 4,000 feet. The climate is arid with hot, dry summers and mild winters. The mean annual precipitation is 4 to 9 inches; mean annual temperature is 61 to 69 degrees F., and the frost-free season is l80 to 250 days.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Glendale, Land, Mormon Mesa, and Vinton soils. Glendale and Vinton soils lack a calcic horizon and have less than 35 percent rock fragments. Land soils have a salic horizon and a fine-silty control sections. Mormon Mesa soils have a petrocalcic horizon.

DRAINAGE AND PERMEABILITY: Well drained; slow or medium runoff; moderate permability.

USE AND VEGETATION: Irrigated crops and pasture, rangeland, and wildlife habitat. The present vegetation is mainly creosotebush, white bursage, dalea, shadscale, and big galleta.

DISTRIBUTION AND EXTENT: Southern Nevada. These soils are not extensive.

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: PHOENIX, ARIZONA

SERIES ESTABLISHED: Clark County, Nevada, l964.

Responsibility for this series was transferred from Davis to Phoenix 4/2015. The last revision to the series was 5/1997. ET

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National Cooperative Soil Survey
U.S.A.