LOCATION DALZELL                 NV

Established Series
Rev. WMA/ELS/RLB/JBF
04/2017

DALZELL SERIES

The Dalzell series consists of moderately deep, somewhat poorly drained soils that form in lacustrine materials. Dalzell soils are on lake terraces. Slopes are 0 to 5 percent. The mean annual precipitation is about 200 mm and the mean annual temperature is about 10 degrees C.

TAXONOMIC CLASS: Fine-loamy, mixed, superactive, mesic Natrargidic Natridurids

TYPICAL PEDON: Dalzell clay loam--pasture. (Colors are for dry soil unless otherwise noted.)

A--0 to 8 cm; pale brown (10YR 6/3) clay loam, brown (10YR 4/3) moist; massive; hard, friable, sticky and slightly plastic; root crowns and many fine and very fine roots; common very fine tubular pores; strongly effervescent; strongly alkaline (pH 8.8); clear wavy boundary. (5 to 10 cm thick)

Btn1--8 to 25 cm; grayish brown (2.5Y 5/2) silty clay loam, brown (10YR 4/3) moist; weak fine prismatic structure; slightly hard, friable, sticky and slightly plastic; common very fine roots; few very fine and common very fine tubular pores; common thin clay films on faces of peds and in pores; strongly effervescent; moderately alkaline (pH 8.4); clear wavy boundary. (15 to 20 cm thick)

Btn2--25 to 43 cm; light gray (10YR 7/2) silty clay loam, light yellowish brown (2.5Y 6/4) moist; few coarse distinct brown (10YR 4/3) mottles; weak medium prismatic structure; hard, friable, sticky and slightly plastic; few very fine roots; few very fine tubular pores; many thin clay films on peds and in pores; strongly effervescent; very strongly alkaline (pH 9.3); gradual smooth boundary. (15 to 23 cm thick)

Btqkn--43 to 53 cm; light brownish gray (2.5Y 6/2) sandy loam, light yellowish brown (2.5Y 6/4) moist; common coarse distinct brown (10YR 4/3) mottles; massive; hard, firm, nonsticky and nonplastic; few very fine roots; few fine tubular pores; many thin clay films lining pores; 40 percent 0.6 and 1.2 cm extremely hard cylindrical durinodes; strongly effervescent; strongly alkaline (pH 8.8); clear smooth boundary. (8 to 15 cm thick)

2Bqkm1--53 to 58 cm; very pale brown (10YR 7/3) strongly cemented duripan, pale brown (10YR 6/3) and dark brown (10YR 3/3) moist; massive; extremely hard, extremely firm, nonsticky and nonplastic; few fine tubular pores; strongly effervescent; moderately alkaline (pH 8.4); clear smooth boundary. (3 to 10 cm thick)

2Bqkm2--58 to 71 cm; light gray (10YR 7/1) strongly cemented duripan, pale brown (10YR 6/3) and brown (10YR 4/3) moist; massive; very hard, very firm, nonsticky and nonplastic; few very fine tubular pores; strongly effervescent; strongly alkaline (pH 8.6); clear smooth boundary. (10 to 18 cm thick)

C1--71 to 117 cm; light gray (10YR 7/1) sandy loam, very pale brown (10YR 7/3) and yellowish brown (10YR 5/4) moist; massive; hard, friable, nonsticky and nonplastic; common very fine interstitial pores; strongly effervescent; very strongly alkaline (pH 9.2); clear wavy boundary. (10 to 20 cm thick)

C2--117 to 132 cm; light olive brown (2.5Y 5/4) sandy loam, brown (10YR 5/3) moist; massive; hard, friable, nonsticky and nonplastic; common very fine interstitial pores; strongly effervescent; very strongly alkaline (pH 9.2); clear wavy boundary. (10 to 20 cm thick)

C3--132 to 160 cm; light olive brown (2.5Y 5/4) loamy sand, brown (10YR 5/3) moist; massive; soft, very friable; many very fine interstitial pores; 20 percent strongly cemented lime nodules; strongly effervescent; very strongly alkaline (pH 9.2).

TYPE LOCATION: Lyon County, Nevada; 2,500 feet south and 2,000 feet west of the northeast corner of section 15, T.12N., R.23E.; latitude 38 degrees 54 minutes 15 seconds N and longitude 119 degrees 23 minutes 29 seconds W; WGS84 Decimal Degrees 38.9041667 latitude, -119.391389 longitude.

RANGE IN CHARACTERISTICS:
Soil moisture: Usually dry but are moist during the winter and spring months, typic aridic soil moisture regime.
Mean annual soil temperature: 11 to 13 degrees C.
Depth to the strongly cemented duripan: 50 to 100 cm.

Particle-size control section - Clay content: 20 to 35 percent.

A horizons
Hue of 10YR or 2.5Y.
Value: 5 through 7 dry, 4 or 5 moist.
Chroma: 2 or 3.

Btn and Btqkn horizons
Hue: 10YR or 2.5Y.
Value: 5 through 7 dry, 4 through 6 moist.
Chroma: 1 through 3.
Texture: Sandy loam, sandy clay loam, loam, clay loam or silty clay loam.
Structure: Weak to strong fine or medium prismatic structure.
Sodicity (SAR): 15 to 35 percent.
Clay films: Common to many thin to moderately thick clay bridges.

C horizon
Hue: 10YR or 2.5Y.
Value: 5 through 7 dry, 4 through 7 moist.
Chroma: 2 through 4.

Bqkm horizon
Cementation: Strong or very strong silica lime cementation, induration occur in certain areas.

COMPETING SERIES: This is the Golconda series. Golconda soils have mean annual soil temperatures of 8 to 11 degrees C.

GEOGRAPHIC SETTING: Dalzell soils are on lake terraces at elevations of 1,220 to 1,555 meters. Slopes are 0 to 15 percent. The soils formed in mixed lacustrine materials. The climate is cool, semiarid with an annual precipitation of about 150 to 200 mm. The mean annual temperature is 10 to 11 degrees C., and the mean summer temperature is 18 to 20 degrees C. The frost free season is about 100 to 120 days.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Obanion, Wedertz and Wellington soils. Obanion soils are saturated and lack natric horizons. Wedertz soils lack natric horizon and strongly cemented duripan. Wellington soils lack a natric horizon and have an indurated duripan.

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Somewhat poorly drained; medium or slow runoff, or ponded; moderately high saturated hydraulic conductivity.

USE AND VEGETATION: Used primarily for livestock grazing and wildlife habitat. The vegetation is principally black greasewood, rubber rabbitbrush, shadscale and saltgrass.

DISTRIBUTION AND EXTENT: Valleys in western Nevada. MLRA 26. They are of small extent.

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Davis, California

SERIES ESTABLISHED: Lyon County (Physical Survey of Mason Valley SCD), Nevada, 1940. The series was inactive from 1962 through 1972 and was returned to the active list in 1973.

REMARKS: This soil has a somewhat poorly drained drainage class, but no mention in soil moisture about depth of water table. Does this soil meet the aquic requirement? Needs to be evaluated during MLRA update.

Diagnostic horizon and features recognized in this pedon are:
Ochric epipedon - The zone from the soil surface to 8 cm (A horizon).
Argillic horizon - The zone from 8 to 53 cm (Btn1, Btn2 and Btqkn3).
Duric horizon - The zone from 53 to 71 cm (Bqkm1 and Bqkm2).
Particle size control section - The zone from 8 to 53 cm (Btn1, Btn2 and Btqkn3).

ADDITONIAL DATA: User Pedon ID: 2006NV019016.

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National Cooperative Soil Survey
U.S.A.