LOCATION JARBOE                  NV

Established Series
Rev. LNL/LR/ELS/JBF
06/2016

JARBOE SERIES

The Jarboe series consists of very deep, moderately well drained soils that formed in mixed alluvium derived from limestone, shale, tuff andesite, basalt and sandstone. Jarboe soils are on concave basins or lake-formed terraces. Slopes are less than 1 percent. The mean annual precipitation is 175 mm and the mean annual temperature is about 12 degrees C.

TAXONOMIC CLASS: Fine-loamy, carbonatic, mesic Petronodic Haplocalcids

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

A1--0 to 8 cm; light gray (10YR 7/2) sandy loam, brown (10YR 5/3) moist; strong thin platy structure; soft, very friable, nonsticky and slightly plastic; very few fine and medium roots; many fine and medium vesicular pores; strongly effervescent; strongly alkaline (pH 8.7); abrupt smooth boundary. (5 to 10 cm thick)

A2--8 to 15 cm; light gray (10YR 7/2) fine sandy loam, brown (10YR 5/3) moist; weak medium platy structure; soft, very friable, nonsticky and nonplastic; few fine and medium roots; many fine vesicular pores; violently effervescent; very strongly alkaline (pH 9.2); clear wavy boundary. (5 to 13 cm thick)

Bk1--15 to 33 cm; white (10YR 8/1) silty clay loam, light gray (10YR 7/2) moist; strong medium and fine subangular blocky structure; extremely hard, firm, moderately sticky and moderately plastic; common fine, medium, and coarse roots; many cracks between aggregates; violently effervescent; strongly alkaline (pH 8.7); clear irregular boundary. (13 to 23 cm thick)

Bk2--33 to 58 cm; white (10YR 8/1) extremely paragravelly silty clay loam, very pale brown (10YR 8/2) moist; weak medium angular blocky structure; very hard, very firm, moderately sticky and moderately plastic; few fine roots in cracks between aggregates; many shells about 1 mm long and 2 mm in diameter; discontinuous (75%) strongly carbonate-cemented lenses; violently effervescent; strongly alkaline (pH 8.9); clear irregular boundary. (18 to 60 cm thick)

C--58 to 168 cm; white (5Y 8/1), pale yellow (5Y 8/2) silt loam, light gray (5Y 7/2) moist; few fine distinct light yellowish brown (10YR 6/4) and reddish brown (5YR 4/4) iron mottles; massive; very hard, firm, nonsticky and slightly plastic; very few fine roots; common fine tubular pores; violently effervescent; strongly alkaline (pH 9.0).

TYPE LOCATION: Lincoln County, Nevada; 1,970 feet north and 850 feet west of the southeast corner of sec. 26, T. 3 S., R. 55 E.; USGS White Blotch Springs NE 7.5 minute topographic quadrangle; latitude 37 degrees 39 minutes 18 seconds N and longitude 115 degrees 45 minutes 16 seconds W; WGS84 Decimal Degrees 37.6550000 latitude, -115.7544444 longitude.

RANGE IN CHARACTERISTICS:
Soil moisture: Saturated for at least 1 month at depths of about 100 cm during most years, mainly during the winter; aridic moisture regime bordering on aquic.
Mean annual soil temperature: 13 to 15 degrees C.
Depth to the Bk horizon: 10 to 23 cm.
Depth to the cemented layer: 25 to 50 cm.
Thickness of cemented layer: 18 to 60 cm.
Other features: Clay fraction is dominated by clay sized calcium carbonate and the soil contains over 40 percent calcium carbonate.

Particle-size control section - Clay content: 18 to 35 percent.

A horizons
Hue of 10YR or 2.5Y.
Value: 6 or 7 dry, 4 or 5 moist.
Chroma of 1 through 3.

Bk horizons
Value 7 or 8 dry, 6 or 7 moist.
Chroma of 1 through 4.
Texture: Silty clay loam or silt loam
Consistence: Very hard or extremely hard and firm or very firm.
Calcium carbonates equivalents: 40 to 70 percent.

C horizon
Hue of 5Y or is neutral.
Value of 6 through 8 dry, 5 through 7 moist.
Chroma of 0 through 2.
Other features: Few or common, fine to coarse, distinct or prominent high chroma iron mottles with hue of 10YR through 5YR are at depths of 50 to 100 cm.

COMPETING SERIES: There are no other series in this family.

GEOGRAPHIC SETTING: Jarboe soils are concave basins or lake-formed terraces at elevations of 1,370 to 1,680 meters. Slopes are less than 1 percent. The soils formed in lacustrine materials derived from mixed rocks including limestone, shale, tuff, andesite, basalt and sandstone. These materials have been modified by carbonate precipitated from evaporating ground water. The climate is cool, semiarid with a mean annual precipitation of 150 to 200 mm. The mean annual temperature 11 to 13 degrees C and the average frost-free period is 130 to 150 days.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Aysees, Cliffdown, Kawich, Papoose, and Timper soils. Aysees soils have sandy-skeletal particle-size control sections; Cliffdown soils have coarse-loamy particle-size control sections; and Kawich soils have sandy particle-size control sections. Papoose soils have sandy clay loam argillic horizons. Timper soils have indurated duripans.

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Moderately well-drained; these soils were formed under more poorly drained conditions than exist today. Evaporation of the lake waters and subsequent lowering of the water table has improved the natural drainage. Very slow runoff; moderately high saturated hydraulic conductivity.

USE AND VEGETATION: These soils are used for livestock grazing. Vegetation is mainly salt and alkali-tolerant plants that are dominated by greasewood, fourwing saltbush, and gray molly.

DISTRIBUTION AND EXTENT: South-central Nevada. MLRA 29. The soil is inextensive.

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

SERIES ESTABLISHED: Lincoln County (Penoyer Valley), Nevada, 1974.

REMARKS: Diagnostic horizon and features recognized in this pedon are:
Ochric epipedon - The zone from the soil surface to 18 cm (Al, A2 and part of Bk1 horizons)
Calcic horizon - The zone from 15 to 58 cm (Bk1 and Bk2 horizons)
Particle size control section - The zone from 25 to 100 cm (parts of the Bk1, Bk2 and the upper part of the C horizons).

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National Cooperative Soil Survey
U.S.A.