LOCATION KAWICH NV+OREstablished Series
TAXONOMIC CLASS: Mixed, mesic Typic Torripsamments
TYPICAL PEDON: Kawich fine sand, rangeland. (Colors are for dry soil unless otherwise noted.)
A--0 to 2 inches; very pale brown (10YR 7/3) fine sand, brown (10YR 5/3) moist; single grained; loose; few very fine and fine roots; many micro and very fine interstitial pores; violently effervescent; strongly alkaline (pH 8.7); clear smooth boundary. (2 to 6 inches thick)
C1--2 to 10 inches; very pale brown (10YR 7/3) fine sand, brown (10YR 5/3) moist; single grained; loose; few medium and abundant very fine and fine roots; many micro and very fine interstitial pores; violently effervescent; strongly alkaline (pH 8.6); gradual smooth boundary. (6 to 60 inches)
C2--10 to 46 inches; very pale brown (10YR 7/3) fine sand, brown (10YR 5/3) moist; single grained; loose; few medium and abundant very fine and fine roots; many micro and very fine interstitial pores; violently effervescent; moderately alkaline (pH 8.4); abrupt smooth boundary. (0 to 50 inches thick)
2C--46 to 60 inches; very pale brown (10YR 7/4) silty clay loam, yellowish brown (10YR 5/4) moist; strong thin platy structure; hard, friable, sticky and plastic; few very fine and fine roots; many very fine and fine vesicular and few very fine tubular pores; violently effervescent; strongly alkaline (pH 8.9).
TYPE LOCATION: Lincoln County, Nevada. About 300 feet west of the northwest corner of section 26, T. 3 S., R. 55 E.
RANGE IN CHARACTERISTICS:
Soil moisture - Usually dry, but moist in some part for short periods during winter and early spring months and for 10 to 20 days cumulative between July and October due to convection storms.
Soil temperature - 54 to 59 degrees F.
Depth to strongly contrasting layers - 40 to over 120 inches.
Control section - Averages fine sand, but may contain strata of sand or loamy fine sand.
A horizon - Hue: 10YR or 7.5YR.
Value: 5 through 8 dry, 4 through 7 moist.
Chroma: 1 through 4, dry or moist.
C horizon - Hue 10YR or 7.5YR
Value: 5 through 8 dry; 4 through 7 moist.
Chroma: 1 through 4, dry or moist.
Consistence: Hard or loose dry, very friable or loose moist.
Structure: Massive or single grain.
Effervescence - Slightly effervescent to violently effervescent.
Soil reaction - Slightly alkaline to very strongly alkaline.
Other features - Contains significant amounts of pyroclastic material.
COMPETING SERIES: These are the Als (OR), Ecklund (CO), Hawsley (NV), Isolde (NV), Kawake (OR), Razito (NM), Sheppard (UT), Stumble (NM), Sundown (NM), Tipper (NM), Tipperary (WY), Tricera (CO) and Yenrab (UT) series. Als soils are noncalcareous throughout and do not receive the 10 to 20 days of summer precipitation. Ecklund soils have a lithic contact at moderate depth. Kewake soils do not receive the 10 to 20 days of summer precipitation and contain 5 to 30 percent sand sized pumice. Hawsley and Isolde are not moist 10 to 20 days in the summer. Razito soils receive more moisture during the late summer and fall and lack pyroclastic material. Sheppard soils have hue of 7.5YR or redder, and do not have a lithologic discontinuity. Stumble and Sundown soils have a loamy fine sand control section. Stumble soils also lack lime in the upper 10 to 15 inches and have a weak Bk horizon. Tipper soils have bedrock at a depth of 20 to 40 inches. Tipperary soils lack pyroclastic material. Tricera soils have lime accumulation at a depth of 40 inches or more. Tricera soils are neutral to moderately alkaline. Yenrab soils lack pyroclastic material.
GEOGRAPHIC SETTING: Kawich soils are on stabilized dunes over lake beds and playas. These soils formed in sandy eolian material derived mainly from mixed rocks. Slopes are 0 to 50 percent. Elevations are 4,100 to 6,100 feet. The mean annual precipitation is about 5 to 8 inches. The January average air temperature is about 35 degrees F., July temperature is about 71 degrees F.; mean annual temperature is about 50 to 57 degrees F., and the frost-free season is 100 to 150 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the McCutchen, Penoyer and Woodrow soils. McCutchen soils are coarse-loamy and have a calcic horizon. Penoyer soils are coarse-silty. Woodrow soils are fine-silty.
DRAINAGE AND PERMEABILITY: Excessively drained; negligible to low runoff; very rapid permeability.
USE AND VEGETATION: Rangeland and wildlife habitat. The vegetation mainly consists of black greasewood, fourwing saltbush, gray molly kochia, shadscale and seepweed.
DISTRIBUTION AND EXTENT: South-central Nevada. MLRA 28A, 28B, and 29. These soils are moderately extensive.
MLRA OFFICE RESPONSIBLE: Reno, Nevada
SERIES ESTABLISHED: Lincoln County, Nevada, 1960.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Particle-size control section - The zone from 10 to 40 inches (C2 horizon).