LOCATION AYSEES                  NV+ID

Established Series
Rev. LNL/LR/RPZ/JBF
04/2012

AYSEES SERIES

The Aysees series consists of very deep, somewhat excessively drained soils formed in alluvium derived from mixed rocks. Aysees soils are on alluvial fans and have slopes of 0 to l2 percent. The mean annual precipitation is about 200 mm and the mean annual temperature is about 11 degrees C.

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

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

A--0 to 10 cm; very pale brown (10YR 7/3) gravelly sandy loam, brown (10YR 4/3) moist; weak thick platy structure; soft, very friable, nonsticky and nonplastic; few fine roots; many fine and medium vesicular pores; 30 percent gravel; strongly effervescent; moderately alkaline (pH 8.3); abrupt smooth boundary. (8 to 15 cm thick)

C--10 to 38 cm; very pale brown (10YR 7/3) fine sandy loam, brown (10YR 5/3) moist; massive; slightly hard, friable, nonsticky and slightly plastic; many very fine and fine roots; many very fine and fine tubular pores; 2 percent gravel; some of the gravel have small amounts of lime on lower sides; strongly effervescent; strongly alkaline (pH 8.9); clear wavy boundary. (20 to 30 cm thick)

2Ck--38 to 56 cm; light gray (10YR 7/2) gravelly sandy loam, dark grayish brown (10YR 4/2) moist; massive; soft, very friable, nonsticky and nonplastic; many very fine roots; common very fine and fine interstitial pores; 30 percent lime-coated gravel; violently effervescent; very strongly alkaline (pH 9.1); clear wavy boundary. (15 to 20 cm thick)

3C--56 to 152 cm; grayish brown (10YR 5/2) extremely gravelly sand, dark grayish brown (10YR 4/2) moist; single grained; loose, nonsticky and nonplastic; common very fine and fine roots; many very fine and fine interstitial pores; 60 percent gravel with thin lime coats on underside; strongly effervescent; moderately alkaline (pH 8.1).

TYPE LOCATION: Lincoln County, Nevada; about 2.5 miles east and 0.3 miles south of benchmark 4772; about 1,930 feet north and 2,730 feet east of the southwest corner of section 30, T. 3 S., R. 56 E.; latitude 37 degrees 37 minutes 18 seconds N and longitude 115 degrees 43 minutes 27 seconds W; NAD 83.

RANGE IN CHARACTERISTICS:
Soil moisture: Usually dry, moist in winter and spring, and are moist in the upper part of the moisture control section for 10 to 20 cumulative days due to convection storms in July and August; typic aridic soil moisture regime.
Soil temperature: 10 to 14 degrees C.
Carbonates: Strongly effervescent or violently effervescent throughout.

Particle-size control section - Clay content: 5 to 10 percent in the upper part and 0 to 5 in the lower part.
Rock fragments: Averages 35 to 60 percent.

A horizon
Value: 6 or 7 dry, 4 or 5 moist.
Chroma: 2 or 3.
Calcium carbonate equivalent: 5 to 15 percent

C and 2Ck horizon
Hue: 10YR or 2.5Y.
Value: 5 through 7 dry, 4 or 5 moist.
Chroma: 2 or 3.
Texture: Stratified layers averaging fine sandy loam or sandy loam.
Rock fragments: Average 10 to 30 percent.
Reaction: Moderately alkaline or strongly alkaline.
Calcium carbonate equivalent: 10 to 30 percent

2C horizon
Hue: 10YR or 2.5Y.
Value: 5 through 7 dry, 4 or 5 moist.
Chroma: 2 or 3.
Texture: Loamy coarse sand or sand.
Rock fragments: Average 50 to 70 percent
Reaction: Moderately alkaline through very strongly alkaline.
Calcium carbonate equivalent: 5 to 15 percent

COMPETING SERIES: These are the Loray and Oljeto series.

Loray soils average 60 to 80 percent rock fragments in the particle size control section and are not moist in the upper part of the moisture control section for 10 to 20 cumulative days due to convection storms in July and August. Oljeto soils have hue of 2.5YR or 5YR.

GEOGRAPHIC SETTING: These soils are on smooth alluvial fans at elevations of 1,370 to 1,770 meters. Slopes are 0 to l2 percent. The soils formed in alluvium mainly from limestone, dolomite, shale, sandstone, quartzite, and tuff. The climate is arid with a mean annual precipitation of 175 to 225 mm. The mean annual temperature is 9 to 13 degrees C and the average frost-free season is 100 to 150 days.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Alpowa, Bluewing, Cliffdown, Garbutt, and Paniogue soils. Alpowa soils have a mollic epipedon. Bluewing and Cliffdown soils lack a calcic horizon. Also Cliffdown soils are not very gravelly in the particle-size control section. Garbutt soils are coarse-silty. Paniogue soils are coarse-loamy over sandy or sandy-skeletal.

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Somewhat excessively drained; slow runoff; high saturated hydraulic conductivity.

USE AND VEGETATION: Used for livestock grazing. The vegetation is mainly shadscale, bud sagebrush, winerfat and galleta.

DISTRIBUTION AND EXTENT: Southeastern Nevada and southern Idaho. The series is moderately extensive.

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

SERIES ESTABLISHED: Lincoln County (Pahranagat and Penoyer Valleys), Nevada, l974.

REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - The zone from the soil surface to 18 cm (part of the A horizon).
Calcic horizon - The zone from 38 to 94 cm (2Ck horizon).
Particle size control section - The zone from 25 to 100 cm (C1, 2Ck and part of the 3C horizons).

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National Cooperative Soil Survey
U.S.A.