LOCATION STALLONE NMEstablished Series
TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive, thermic Aridic Haplustolls
TYPICAL PEDON: Stallone extremely bouldery sandy loam--rangeland. (Colors are for dry soil unless otherwise stated.)
A--0 to 2 inches; reddish brown (5YR 5/3) crushed, extremely bouldery sandy loam; dark reddish brown (5YR 3/3) crushed, moist; 12 percent clay; weak fine granular and weak fine subangular blocky structure; soft, very friable; slightly sticky and nonplastic; common fine roots throughout; 40 percent nonflat subangular indurated 0.1- to 3-inch monzonite gravel, 20 percent nonflat subrounded indurated 3- to 10-inch monzonite cobbles and 25 percent nonflat subrounded indurated greater than 24-inch monzonite boulders; noneffervescent by HCl, 1 normal; strongly acid, pH 5.1, pH meter 1:1 water; gradual smooth boundary. (1 to 5 inches thick)
Bw--2 to 8 inches; reddish brown (5YR 5/3) crushed, extremely cobbly sandy loam, dark reddish brown (5YR 3/3) crushed, moist; 14 percent clay; weak medium subangular blocky structure; moderately hard, firm; slightly sticky and nonplastic; common fine roots throughout; few fine dendritic tubular pores; 20 percent nonflat subrounded indurated 0.1- to 3-inch monzonite gravel; 40 percent nonflat subrounded indurated 3- to 10-inch cobbles and 20 percent nonflat subrounded indurated greater than 24-inch monzonite boulders; noneffervescent by HCl, 1 normal; very strongly acid, pH 4.9, pH meter 1:1 water; gradual smooth boundary. (3 to 10 inches thick)
C1--8 to 14 inches; reddish brown (5YR 4/4) crushed, extremely cobbly sandy clay loam, dark reddish brown (5YR 3/3) crushed, moist; 20 percent clay; massive; moderately hard, firm; moderately sticky and moderately plastic; few fine roots throughout; few fine dendritic tubular pores; 30 percent nonflat subrounded indurated 0.1- to 3-inch monzonite gravel, 40 percent nonflat subrounded indurated 3- to 10-inch monzonite cobbles and 15 percent nonflat subrounded indurated greater than 24-inch monzonite boulders; noneffervescent by HCl, 1 normal; strongly acid, pH 5.5, pH meter 1:1 water; clear smooth boundary. (4 to 9 inches thick)
C2--14 to 34 inches; yellowish red (5YR 5/6) crushed, extremely cobbly sandy clay loam, yellowish red (5YR 4/6) crushed, moist; 24 percent clay; massive; moderately hard, firm; moderately sticky and moderately plastic; few fine roots throughout; few fine dendritic tubular pores; 30 percent nonflat subrounded indurated 0.1- to 3 inch monzonite gravel, 40 percent nonflat subrounded indurated 3- to 10-inch monzonite cobbles and 15 percent nonflat subrounded indurated greater than 24-inch monzonite boulders; noneffervescent by HCl, 1 normal; moderately acid, pH 5.6, pH meter 1:1 water; clear smooth boundary. (15 to 24 inches thick)
C3--34 to 80 inches; reddish brown (5YR 5/4) crushed, extremely cobbly sandy clay loam, dark reddish brown (5YR 3/4) crushed, moist; 24 percent clay; massive; moderately hard, firm; moderately sticky and moderately plastic; few fine roots throughout; few fine dendritic tubular pores; 25 percent nonflat subrounded indurated 0.1- to 3-inch monzonite gravel, 30 percent nonflat subrounded indurated 3- to 10-inch monzonite cobbles and 25 percent nonflat subrounded indurated greater than 24 inch monzonite boulders; noneffervescent by HCl, 1 normal; very strongly acid, pH 4.7, pH meter 1:1 water.
TYPE LOCATION: Dona Ana County, New Mexico; approximately 1.2 miles west and 5.6 miles south of White Sands, 1,629 feet north and 440 feet west of the southeast corner of sec. 23, T. 23 S., R. 4 E. USGS Davies Tank topographic quadrangle; latitude 32 degrees, 17 minutes, 26 seconds north and longitude 106 degrees 29 minutes 51 seconds west. UTM zone 13S, 358980E, 3573438N; NAD 27.
RANGE IN CHARACTERISTICS:
Soil moisture: The moisture control section is usually dry in some or in all parts for six-tenths or more of the time that the soil temperature exceeds 41 degrees F. Some part of the epipedon is moist for more than 90 cumulative days in most years when the soil temperature exceeds 41 degrees F. Aridic ustic moisture regime.
Mean annual soil temperature: 59 to 62 degrees F.
Thickness of mollic epipedon: 7 to 15 inches
Particle-size control section (weighted average)
Clay content: 18 to 27 percent
Coarse fragment content: 60 to 85 percent
Reaction: very strongly acid to moderately acid
A horizon:
Hue: 5YR or 7.5YR
Value: 3 to 5 dry, 2 or 3 moist
Chroma: 1 to 3, dry or moist
Coarse fragments: monzonite fragments; 65 to 85 percent total coarse fragments; 30 to 50 percent gravel; 15 to 25 percent cobbles and 20 to 30 percent boulders.
Bw horizon:
Hue: 5YR to 7.5YR
Value: 3 to 5 dry, 2 or 3 moist
Chroma: 1 to 3, dry or moist
Coarse fragments: monzonite fragments; 60 to 85 percent total coarse fragments, 15 to 25 percent gravel, 30 to 50 percent cobbles and 15 to 25 percent boulders.
C horizons:
Hue: 5YR or 7.5YR
Value: 3 to 5 dry, 2 to 5 moist
Chroma: 2 to 6, dry or moist
Coarse fragments: 65 to 85 percent total coarse fragments; 25 to 40 percent gravel; 30 to 50 percent cobbles and 10 to 30 percent boulders.
Texture: sandy clay loam, clay loam, or sandy loam
COMPETING SERIES: There are no competing series.
GEOGRAPHIC SETTING:
Parent material: Debris flow deposits derived from monzonite
Landform: Alluvial fans
Slope: 5 to 15 percent
Mean annual temperature: 58 to 61 degrees
Mean annual precipitation: 12 to 14 inches
Precipitation pattern: Precipitation falls mostly during the months of July through September. The driest months are March and April. Precipitation during the months of January, February and March is less than 13 percent of the total.
Frost-free period: 140 to 180 days
Elevation: 4,500 to 5,500 feet
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Brewster and
Sotol soils.
Brewster soils are less than 20 inches to bedrock and are on mountain tops and flanks.
Sotol soils have argillic horizons and are on mountain flanks and bases.
DRAINAGE AND PERMEABILITY: Well drained. Permeability is moderately slow. Runoff is high .
USE AND VEGETATION: Used for livestock grazing. Vegetation is of the mixed prairie type consisting of black grama, sideoats grama, tanglehead, plains bristlegrass, mesquite, and Torry's yucca.
DISTRIBUTION AND EXTENT: Southern New Mexico; LRR D, MLRA 42. The series is of small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Phoenix, Arizona.
SERIES ESTABLISHED: Dona Ana County, New Mexico; 2001.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Particle-size control section: The zone from 10 to 40 inches. (C1, C2, and C3 horizons)
Mollic epipedon: The zone from 0 to 8 inches. (A, and Bw horizons).
Aridic feature: an ustic moisture regime that borders on the aridic moisture regime.
The assignment of the cation exchange capacity is inferred from lab data from similar soils in the surrounding area.