LOCATION DOOWAK NVEstablished Series
TAXONOMIC CLASS: Sandy-skeletal, mixed, mesic Xeric Torriorthents
TYPICAL PEDON: Doowak very gravelly loamy sand, rangeland. (Colors are for dry soil unless otherwise noted.)
A--0 to 6 inches; grayish brown (10YR 5/2) very gravelly loamy sand, very dark grayish brown (10YR 3/2) moist; moderate medium and thick platy structure; soft, very friable, nonsticky and nonplastic; common fine and few very fine roots; many very fine vesicular pores; 40 percent pebbles; mildly alkaline (pH 7.6); abrupt smooth boundary. (4 to 6 inches thick)
Bw--6 to 18 inches; grayish brown (10YR 5/2) extremely gravelly sand, very dark grayish brown (10YR 3/2) moist lithochromic colors; single grained; loose, nonsticky and nonplastic; common fine and few medium roots; many very fine interstitial pores; 65 percent pebbles; moderately alkaline (pH 8.0); clear smooth boundary. (10 to 25 inches thick)
Bk1--18 to 33 inches; grayish brown (10YR 5/2) extremely gravelly loamy sand, very dark grayish brown (10YR 3/2) moist lithochromic colors; single grained; loose, nonsticky and nonplastic; common very fine and fine roots; many very fine interstitial pores; 70 percent pebbles; very thin lime coatings on undersides of pebbles; slightly effervescent; moderately alkaline (pH 8.0); gradual smooth boundary. (10 to 15 inches thick)
Bk2--33 to 48 inches; grayish brown (10YR 5/2) extremely gravelly loamy sand, very dark grayish brown (10YR 3/2) moist lithochromic colors; single grained; loose, nonsticky and nonplastic; common very fine and fine, few medium roots; many very fine interstitial pores; 75 percent pebbles and 2 percent cobbles; very thin lime coatings on undersides of rock fragments; slightly effervescent; moderately alkaline (pH 8.0); clear smooth boundary. (10 to 15 inches thick)
Bk3--48 to 60 inches; grayish brown (10YR 5/2) extremely gravelly sand, very dark grayish brown (10YR 3/2) moist lithochromic colors; single grained; loose, nonsticky and nonplastic; many very fine interstitial pores; 60 percent pebbles and 5 percent cobbles; very thin lime coatings on undersides of rock fragments; strongly effervescent; moderately alkaline (pH 8.4).
TYPE LOCATION: Lander County, Nevada; approximately 18 miles south of Battle Mountain, about 1,000 feet north and 1,000 feet west of the southeast corner of section 9, T. 29 N., R. 44 E.; 40 degrees, 24 minutes, 20 seconds north latiutde and 117 degrees, 1 minutes, 38 seconds west longitude
RANGE IN CHARACTERISTICS:
Soil moisture - Usually dry, moist in winter and spring, dry early June through October.
Soil temperature - 47 to 52 degrees F.
Control section - Clay content: 3 to 8 percent.
Rock fragments: 60 to 80 percent, mainly pebbles.
Texture: Stratified extremely gravelly sand to extremely gravelly loamy sand.
Reaction: Mildly alkaline or moderately alkaline.
A horizon - Value: 5 or 6 dry.
Bk horizon - Effervescence: Slightly to strongly effervescent.
COMPETING SERIES: These are the Burbank, Crunkvar, Sheeprock, Skaha, and Wrango series. Burbank soils have mean annual soil temperatures of 52 to 56 degrees F and lack lithocromic colors. Crunkvar soils are noncalcareous and have a mean annual soil temperature of 53 to 57 degrees F. Sheeprock soils are calcareous, have a sand fraction that is dominantly coarse and most rock fragments one-eighth to one-half inch in diameter. Skaha soils are neutral and noncalcareous throughout. Wrango soils are calcareous throughout the particle-size control section.
GEOGRAPHIC SETTING: Doowak soils are on inset fans. These soils formed in alluvium from mixed rock sources. Slopes are 0 to 2 percent. Elevations are 4,500 to 6,000 feet. The climate is cool semiarid with hot, dry summers and cold, moist winters. The mean annual precipitation is 8 to 10 inches; mean annual temperature is 45 to 50 degrees F.; and frost-free season is 100 to 120 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Oxcorel and Zineb soils. Oxcorel soils have a clayey textured natric horizon. Zineb soils have a cambic horizon and are loamy-skeletal.
DRAINAGE AND PERMEABILITY: Excessively drained; slow runoff; very rapid permeability; rare or occasionally flooded.
USE AND VEGETATION: Rangeland and wildlife habitat. The present vegetation is mainly Wyoming big sagebrush, spiny hopsage, Thurber needlegrass, and Indian ricegrass.
DISTRIBUTION AND EXTENT: Central Nevada. These soils are not extensive.
MLRA OFFICE RESPONSIBLE: Reno, Nevada
SERIES ESTABLISHED: Lander County, North Part, Nevada, 1985.
REMARKS:
Diagnostic horizon and features recognized in this pedon are:
Ochric epipedon - The zone from the soil surface to 6 inches (the A horizon).
Particle-size control section - The zone from 10 to 40 inches (The Bk1 and parts of the Bw and Bk2 horizons)