LOCATION COYOTE CA
Established Series
REV: PBF/ET
04/2015
COYOTE SERIES
The Coyote series consists of very deep, somewhat excessively drained soils formed in granitic alluvium. The Coyote soils are on upper sideslopes and summits of highly dissected erosional fan remnants. Slope ranges from 2 to 30 percent. The mean annual precipitation is about 5 inches, and the mean annual temperature is about 66 degrees F.
TAXONOMIC CLASS: Sandy, mixed, thermic Durinodic Haplocalcids
TYPICAL PEDON: On Coyote-Cronese complex, 2 to 30 percent slopes at an elevation of 2,465 feet. (Colors are for dry soil unless otherwise noted.) The soil surface is covered with 75 percent gravel, 10 percent cobbles, and 5 percent stones.
A -- 0 to 1 inch; light brownish gray (10YR 6/2) extremely gravelly sandy loam, grayish brown (10YR 5/2) moist; weak thin platy structure; soft, very friable, slightly sticky and slightly plastic; many fine and medium roots throughout; few medium vesicular pores; strongly effervescent (calcium carbonate equivalent of 6 percent); 65 percent gravel and 5 percent cobbles; moderately alkaline (pH 8.1); abrupt smooth boundary. (1 to 6 inches)
Bk -- 1 to 11 inches; pale brown (10YR 6/3) very gravelly loamy sand, light brownish gray (10YR 6/2) moist; weak fine subangular blocky structure; very friable, nonsticky and nonplastic; few fine roots; few distinct fine and medium irregular carbonate concretions throughout; violently effervescent (calcium carbonate equivalent of 5 percent); 35 percent gravel and 5 percent cobbles; moderately alkaline (pH 8.4); clear wavy boundary. (4 to 11 inches.)
Bkq -- 11 to 23 inches; very pale brown (10YR 7/3) gravelly loamy sand, light brownish gray (10YR 6/2) moist; single grain; loose, nonsticky and nonplastic; few thin roots in cracks; common distinct fine and medium irregular carbonate concretions and 25 percent medium irregular durinodes throughout; few, thin (0.5 to 1 inch) brittle, discontinuous strata weakly cemented by silica and calcium carbonate; violently effervescent (calcium carbonate equivalent of 6 percent); 33 percent gravel; moderately alkaline (pH 8.2); clear wavy boundary. (10 to 20 inches thick)
Ck -- 23 to 43 inches; light gray (10YR 7/2) gravelly sand, light brownish gray (10YR 6/2) moist; massive; soft, very friable, nonsticky and nonplastic; few fine and medium roots in cracks; few discontinuous distinct carbonate coats on rock fragments; violently effervescent (calcium carbonate equivalent of 5 percent); 30 percent gravel; moderately alkaline (pH 8.2); clear wavy boundary.
C -- 43 to 65 inches; very pale brown (10YR 8/2) very gravelly sand, light brownish gray (10YR 6/2) moist; massive; soft, very friable, nonsticky and nonplastic; few fine and very fine roots matted around cobbles; violently effervescent (calcium carbonate equivalent of 5 percent); 35 percent gravel and 15 percent cobbles; strongly alkaline (pH 8.8).
TYPE LOCATION: San Bernardino County, California; about 0.5 miles north of the southern boundary of Fort Irwin National Training Center; about 1,650 feet east and 2,220 feet south of the northwest corner of sec. 18, T. 12 N., R. 3 E., 35 degrees, 07 minutes, and 57 seconds north latitude, and 116 degrees, 42 minutes, and 27 seconds west longitude, Langford Well quadrangle. (UTM 11S, 0526721e 3887660n)
RANGE IN CHARACTERISTICS:
Soil moisture control section: Usually dry, moist in some part for short periods during winter and early spring and for 10 to 20 days cumulative between July and October following convection storms. Typic-Aridic soil moisture regime.
Soil temperature: 63 to 72 degrees F
Organic matter: 0 to 0.5 percent
Surface rock fragments: 30 to 75 percent gravel, 0 to 10 percent cobbles, and 0 to 5 percent stones.
Control section -
Clay content: 2 to 10 percent
Texture of the fine earth: sand or loamy sand
Rock fragments: 15 to 35 percent, mainly gravel
Calcium carbonate equivalent: 5 to 10 percent
A Horizon
Hue: 2.5Y or 10YR
Value: 6 to 8 dry and 4 to 7 moist
Chroma: 2 to 4 dry or moist
Texture of the fine earth: loamy sand or sandy loam
Clay content: 5 to 15 percent
Rock fragments: 30 to 65 percent gravel, 0 to 10 percent cobbles, and 0 to 5 percent stones; range is from 35 to 70 percent.
Calcium carbonate equivalent: 1 to 10 percent
Reaction: slightly or moderately alkaline
Bk Horizon
Hue: 2.5Y or 10YR
Value: 6 to 8 dry and 5 to 8 moist
Chroma: 2 to 4 dry or moist
Texture of the fine earth: sand or loamy sand
Clay content: 2 to 10 percent
Rock fragments: 15 to 35 percent gravel, and 0 to 15 percent cobbles; range is from 15 to 40 percent
Calcium carbonate equivalent: 5 to 10 percent
Reaction: moderately or strongly alkaline
Bkq Horizon
Hue: 2.5Y or 10YR
Value: 6 to 8 dry and 5 to 8 moist
Chroma: 2 to 4 dry or moist
Texture of the fine earth: sand or loamy sand
Clay content: 2 to 10 percent
Secondary carbonates: 10 to 25 percent as carbonate concretions
Rock fragments: 15 to 35 percent gravel, and 0 to 15 percent cobbles; range is from 15 to 35 percent
Calcium carbonate equivalent: 5 to 10 percent
Other features: 20 to 40 percent durinodes
Reaction: moderately or strongly alkaline
C and Ck Horizons
Hue: 2.5Y or 10YR
Value: 6 to 8 dry and 5 to 8 moist
Chroma: 2 to 4 dry or moist
Texture of the fine earth: sand or loamy sand
Clay content: 2 to 10 percent
Rock fragments: 20 to 50 percent gravel, and 0 to 15 percent cobbles; range is from 20 to 55 percent
Calcium carbonate equivalent: 1 to 10 percent
Reaction: moderately or strongly alkaline
COMPETING SERIES: These are the
Macagce (T CA) and
Narea (T CA) series. Macagce soils have a calcium carbonate equivalence of 10 to 20 percent in the calcic horizon and contain 45 to 65 percent coarse and very coarse sand. Narea soils are 20 to 30 inches to the durinodic layer and are in drainage ways.
GEOGRAPHIC SETTING: The Coyote soils are on upper sideslopes and summits of highly dissected fan remnants. Slope ranges from 2 to 30 percent. The soils formed in material from granitic sources. Elevations are 1,800 to 3,200 feet. The climate is arid, with hot, dry summers and cool winters. The mean annual precipitation is 3 to 7 inches. The mean annual temperature is 61 to 70 degrees F. Mean July temperature is about 78 degrees F., and mean January temperature is about 42 degrees F. The frost-free season is 240 to 340 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Arizo,
Cajon and
Cronese soils. Arizo soils are sandy-skeletal and are found in included inset fans. Cajon soils are also found in included inset fans and have a sandy particle size control section. Cronese soils are coarse-loamy and are on similar landscape positions.
DRAINAGE AND PERMEABILITY: Somewhat excessively drained; negligible to medium runoff; moderately rapid or rapid permeability in the surface layer and rapid permeability below.
USE AND VEGETATION: Coyote soils are used for military exercises and wildlife habitat. The present vegetation is mainly annual grasses and perennial shrubs such as white bursage, creosotebush, range ratany and desert needlegrass.
DISTRIBUTION AND EXTENT: Mojave Desert of southeastern California. The series is of small extent in MLRA-30.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: PHOENIX, ARIZONA
SERIES ESTABLISHED: San Bernardino County, California, Fort Irwin Soil Survey Area, 2000. The name is from Coyote Lake, a playa.
REMARKS: Diagnostic horizons and features recognized in the profile are:
1. Ochric epipedon -- 0 to 1 inch (A1 horizon)
2. Calcic horizon -- 1 to 23 inches (Bk and Bkq horizons)
3. Durinodic layer - 11 to 23 inches (Bkq horizon)
4. Particle-size control section -- (part of the Bk, the
Bkq and part of the Ck horizons
Responsibility for this series was transferred from Davis to Phoenix 4/2015. The last revision to the series was 5/2000. ET
National Cooperative Soil Survey
U.S.A.