LOCATION DOUBLE NM
Established Series
Rev. DGS/RLB
11/2014
DOUBLE SERIES
The Double series consists of very deep, well drained, moderately slowly permeable soils that formed in calcareous alluvium. These gently sloping soils are on alluvial fans. Slope ranges from 0 to 5 percent. Mean annual precipitation is about 13 inches and the mean annual temperature is about 60 degrees F.
TAXONOMIC CLASS: Fine-loamy, mixed, superactive, thermic Ustic Haplocambids
TYPICAL PEDON: Double silt loam--rangeland (Colors are for dry soil unless otherwise stated.).
A--0 to 2 inches; light brown (7.5YR 6/3), silt loam, brown (7.5YR 4/3), moist; 24 percent clay; moderate very fine granular structure; moderately sticky, nonplastic; many fine roots and many very fine roots; violently effervescent, by HCl, 1 normal; moderately alkaline; clear smooth boundary (1 to 5 inches thick).
Bw1--2 to 8 inches; brown (7.5YR 5/3), silt loam, brown (7.5YR 4/3), moist; 27 percent clay; moderate very fine subangular blocky structure; moderately sticky, nonplastic; many fine roots and many very fine roots; few medium tubular pores; violently effervescent, by HCl, 1 normal; moderately alkaline; clear smooth boundary (4 to 10 inches thick).
Bw2--8 to 37 inches; light brown (7.5YR 6/4), clay loam, brown (7.5YR 4/4), moist; 32 percent clay; moderate medium subangular blocky structure; moderately sticky, nonplastic; common fine roots and common very fine roots; common medium tubular pores; violently effervescent, by HCl, 1 normal; moderately alkaline; gradual smooth boundary (20 to 34 inches thick).
Bw3--37 to 80 inches; light brown (7.5YR 6/4), loam, brown (7.5YR 4/4), moist; 25 percent clay; weak medium subangular blocky structure; moderately sticky, nonplastic; common very fine roots; few medium tubular pores; violently effervescent, by HCl, 1 normal; moderately alkaline.
TYPE LOCATION: Otero County, New Mexico; approximately 6.8 miles north and 19.8 miles east of Oro Grande; 2,300 ft. south and 1,050 ft. east of the northwest corner of section 17, T 21 S. R. 12 E. USGS El Paso Draw, NM topographic quadrangle; lat. 32 degrees 28 minutes 47.8 seconds N. and long. 105 degrees 44 minutes 45.78 seconds W. UTM zone 13, 429902E, 3593694N; NAD 27.
RANGE IN CHARACTERISTICS:
Soil moisture: usually dry in all parts less than three-fourths of the time that the soil temperature exceeds 41 degrees F. Ustic aridic moisture regime.
Mean annual soil temperature: 59 to 62 degrees F.
Particle-size control section (weighted average):
Clay content: 18 to 35 percent
Coarse fragment content: 0 to 5 percent
A horizon
Hue: 7.5YR, 10YR
Value: 4 to 6 dry, 3 to 6 moist
Chroma: 2 to 4, dry or moist
Bw horizon
Hue: 7.5YR, 10YR
Value: 5 to 7 dry, 4 to 6 moist
Chroma: 2 to 6, dry or moist
Texture: loam, silt loam, clay loam, silty clay loam, sandy clay loam
Coarse fragments: limestone fragments; 0 to 5 percent gravel
COMPETING SERIES: These are
Hooks (AZ), Lalande (NM), and
Tenneco (AZ) series.
Hooks soils are noneffervescent throughout. Lalande soils formed in material from redbed formations and are noneffervescent in the upper 10 inches in some pedons, also mapped on the high plains of Texas and are moist in the soil moisture control section during
May and June.
Tenneco soils have Bk horizons and secondary carbonates in the lower part of the subsoil and mean annual soil temperature of 62-69 degrees F.
GEOGRAPHIC SETTING: Double soils are on alluvual fans. They formed in calcareous alluvium. Slopes range from 0 to 5 percent. Elevation ranges from 4,700 to 6,000 feet. The mean annual air temperature is 58 to 61 degrees F. The frost-free period is 140 to 180 days. The mean annual precipitation is 12 to 14 inches. Precipitation falls mostly during the months of July through September. The driest months are March and April.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Armesa,
Jerag,
Reyab, and
Salado soils. Armesa soils have calcic horizons within 20 inches of the surface and are on erosional remnants. Jerag soils have petrocalcic horizons within 20 inches of the surface and are on uplands. Reyab soils are fine-silty and are on inset fans. Salado soils have calcic horizons and are on inset fans.
DRAINAGE AND PERMEABILITY: Well drained. Permeability is moderately slow. Runoff is low.
USE AND VEGETATION: Used for livestock grazing. Vegetation is of the mixed prairie type consisting of alkali sacaton, blue grama, tobosa, sand muhly, burrograss, yucca, and cholla.
DISTRIBUTION AND EXTENT: Trans-Pecos of Texas and southern New Mexico; LRR D, MLRA 42; small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Phoenix, Arizona
SERIES ESTABLISHED: Otero County, New Mexico; 2001. Fort Bliss Military Reservation
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Particle-size control section: The zone from 10 to 40 inches (Bw2 and Bw3 horizons)
Ochric epipedon: The zone from 0 to 8 inches (A and Bw1 horizons)
Cambic horizon: The zone from 2 to 80 inches (Bw1, Bw2, and Bw3 horizons)
Ustic feature: The soil has an aridic moisture regime that borders on the ustic regime
The assignment of the cation-exchange activity class is inferred from lab data from similar soils in the surrounding area.
Updated competing series section 3/20/08, CEM
Classified according to Soil Taxonomy Second Edition, 1999; Keys to Soil Taxonomy, Twelfth Edition, 2014.
Revised for the correlation of Hudspeth County, Texas (Main Part) and Culberson County, Texas (Main Part); July, 2012, NMS
Revised for the correlation of White Sands Missile Range, New Mexico; October, 2014, NMS
National Cooperative Soil Survey
U.S.A.