LOCATION MAYNARD LAKE            NV

Established Series
Rev. LNL/LR/AJE
11/2015

MAYNARD LAKE SERIES

Typically, Maynard Lake soils have thin, light brownish-gray, strongly alkaline A horizons and light grayish brown, strongly alkaline, loamy sand C horizons. These soils contain more than 20 percent volcanic ash or pumice and are calcareous.

TAXONOMIC CLASS: Mixed, thermic Typic Torripsamments

TYPICAL PEDON: Maynard Lake gravelly loamy sand - virgin (Colors for dry conditions unless otherwise noted).

A--0 to 3 inches; light brownish gray (10YR 6/2) gravelly loamy sand, dark grayish brown (10YR 4/2) moist; single grain, loose when dry and moist; practically devoid of roots; many very fine and fine interstitial pores; strongly effervescent; strongly alkaline (pH 8.6); abrupt smooth boundary. (O to 12 inches thick).

C1--3 to 9 inches; light brownish gray (10YR 6/2) gravelly sandy loam, brown (10YR 4/3) moist; massive; soft, very friable, nonsticky, nonplastic; few fine and very fine roots; many very fine and fine interstitial pores; strongly effervescent; strongly alkaline (pH 8.6); abrupt smooth boundary (3 to 7 inches thick).

C2--9 to 20 inches; light brownish gray (10YR 6/2) loamy sand, brown (10YR 4/3) moist; single grain; loose when dry and moist; few very fine and fine roots; many very fine and fine interstitial pores; strongly effervescent; strongly alkaline (pH 8.6); abrupt wavy boundary. (7 to 13 inches thick).

C3--20 to 42 inches; light brownish gray (10YR 6/2) loamy sand, brown (10YR 4/3) moist; massive but breaks readily to single grain; soft, very friable, nonsticky, nonplastic; few very fine roots; many very fine and fine interstitial pores; strongly effervescent; strongly alkaline (pH 8.6); abrupt wavy boundary. (15 to 26 inches thick).

C4--42 to 52 inches; light brownish gray (10YR 6/2) gravelly loamy sand, brown (10YR 5/3) moist; massive but breaks readily to single grain; soft, very friable, nonsticky, nonplastic; few fine and very fine roots; many very fine, fine, and medium interstitial pores; strongly effervescent; strongly alkaline (pH 8.6).

TYPE LOCATION: Lincoln County, Nevada; The site is about 1 mile north of Crystal Springs And 300 feet west of Nevada , Highway 38. The site is about 800 feet west and 1,200 feet south of the northeast corner of Section 3, T. 5 S., R. 6O E., Mount Diablo10 base line and meridian.

RANGE IN CHARACTERISTICS:

Soil moisture: Usually dry during most years, mainly during the late spring, summer and early fall months.

Soil temperature: 59 to 62 degrees F.

Control section - predominantly loamy sand, but may be stratified with loamy fine sand, sand, or fine sand. Contains more than 20 percent volcanic ash and pumice. Gravel content rarely exceeds 30 percent in the control section but may range up to 70 percent in thin strata below 40 inches.

Carbonates show slightly to violently effervescent to 10 percent HCl.


A and C horizons - Hue: 10YR to 7.5YR

Value: 5 to 6.5 dry and 4 or 5 moist.

Chroma: 2 through 4.

COMPETING SERIES: These are the Bluepoint(NV), Brazito(NM), Cajon(CA), Pintura(UT), Toquop(NV) and Yturbide(NM) series. All of these soils differ mainly in having less than 20 percent volcanic ash, glass, or other pyroclastic materials in their silt or coarser fraction. In addition Brazito soils have uncoated sand particles and are predominantly sand or fine sand in the control section; Cajon soils have been derived from granitic sources; Pintura soils have hues of 2.5YR; and Toquop soils have predominantly fine sand control sections.

GEOGRAPHIC SETTING: Maynard Lake soils occur on smooth, slightly undulating or slightly convex nearly level to strongly sloping alluvial fans and flood plains with slope gradients of O to 15 percent. In some areas erosion has cut deep channels through these soils. They have developed in sandy alluvium derived mainly from ignimbrite but partly from dolomite, limestone, quartzite, and basalt. These soils occur at elevations of 3,000 to 3,500 feet where the mean annual precipitation is between 6 and 7 inches. The mean annual air temperature is about 57 to 60 degrees F., and the frost-free period is about 170 to 200 days.

GEOGRAPHICALLY ASSOCIATED SOILS: These are Carrizo and Seaman. Carrizo soils have more than 50 percent coarse fragments in the control section. Seaman soils have fine sandy loam control sections.

DRAINAGE AND PERMEABILITY: Somewhat excessively drained. Runoff is very slow. Soil permeability is rapid.

USE AND VEGETATION: Where water is available for irrigation the soils are used largely for alfalfa and small grain production. Most areas, however, have no irrigation water and are used for livestock grazing. Plant density is about 5 percent and consists mainly of creosotebush, white bursage, shadscale, white burrobrush, and galleta.

DISTRIBUTION AND EXTENT: Lincoln County, Nevada and possibly in adjacent counties in Nevada and Utah. MLRA 30. The soils are of limited extent.

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

SERIES ESTABLISHED: Lincoln County, Nevada (Pahranagat Valley SCD), 1940.

REMARKS: Diagnostic horizon and features recognized in this pedon are:

Ochric epipedon - The zone from 0 to 3 inches (the A horizon)

Particle size control section - The zone from 10 to 40 inches (the C2 and C3 horizons)

Responsibility for this series was transferred from Davis to Phoenix 11/2015. The last revision to the series was 10/1992. ET

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National Cooperative Soil Survey
U.S.A.