LOCATION VINTON AZ+NM TXEstablished Series
TAXONOMIC CLASS: Sandy, mixed, thermic Typic Torrifluvents
TYPICAL PEDON: Vinton loamy sand-cropland. (Colors are for dry soil unless otherwise noted.)
Ap--0 to 12 inches; brown (10YR 5/3) loamy sand, dark yellowish brown (10YR 4/4) moist; massive; soft, very friable, nonsticky and nonplastic; few fine roots; many fine irregular pores; 12 percent fine gravel; slightly effervescent; slightly alkaline (pH 7.5); clear smooth boundary. (6 to 16 inches thick)
C1--12 to 24 inches; yellowish brown (10YR 5/4) stratified loamy sand, dark yellowish brown (10YR 4/4) moist; massive; slightly hard, very friable, nonsticky and nonplastic; few fine roots; many fine irregular pores; 10 percent fine gravel; slightly effervescent; moderately alkaline (pH 8.0); clear smooth boundary. (10 to 20 inches thick)
C2--24 to 36 inches; brown (10YR 5/3) loamy sand, brown (10YR 4/3) moist; massive; slightly hard, very friable, nonsticky and nonplastic; few very fine roots; many fine irregular and few very fine tubular pores; 10 to 15 percent fine gravel; slightly effervescent; moderately alkaline (pH 8.0); clear smooth boundary. (10 to 20 inches thick)
C3--36 to 48 inches; yellowish brown (10YR 5/4) loamy sand, dark yellowish brown (10YR 3/4) moist; massive; slightly hard, very friable, nonsticky and nonplastic; many fine irregular pores; 10 to 15 percent fine gravel; strongly effervescent; moderately alkaline (pH 8.0); clear wavy boundary. (10 to 18 inches thick)
C4--48 to 60 inches; yellowish brown (10YR 5/4) fine sand, dark yellowish brown (10YR 3/4) moist; single grained; loose, nonsticky and nonplastic; many fine irregular pores; few fine gravel; strongly effervescent; moderately alkaline (pH 8.0).
TYPE LOCATION: Pima County, Arizona; intersection of Continental Road and Highway 89 - in the San Ignacio De La Canoa Land Grant - 75 feet south of Continental Road, 500 feet east of U. S. Highway 89 - in the northwest corner of field; west of Continental, T. 18 S., R. 13 E.
RANGE IN CHARACTERISTICS:
Soil Moisture: Usually dry but may be intermittently moist in some part of the soil moisture control section during July-September and December- February. Driest during May and June. Typic aridic soil moisture regime.
Rock Fragments: Usually nongravelly, but may range to 20 percent in any one horizon
Organic Matter: Less than 1 percent that decreases irregularly with depth
Reaction: Neutral to moderately alkaline
Stratification: Usually .5 to 2 inches thick of finer or coarser material. Some strata may range to 5 inches thick
A horizon
Hue: 7.5YR, 10YR
Value: 4 through 7 dry, 3 through 5 moist
Chroma: 2 through 4, dry or moist
C horizon
Hue: 7.5YR, 10YR
Value: 4 through 7 dry, 3 to 5 moist
Chroma: 2 through 4, dry or moist
Texture: loamy sand, loamy fine sand, fine sand; contains strata of finer or coarser material
COMPETING SERIES: These are the Franconia (AZ), Manet (CA), Villa (CA), and Vineland (T) (CA) series. Franconia, Manet, and Villa are in the Mohave Desert and Vineland is in the San Joaquin Valley. All are moist in the soil moisture control section for less than 20 days cumulative between July and September.
GEOGRAPHIC SETTING: Vinton soils are on flood plains at elevations of 1,750 to 5,300 feet. These soils formed in stratified alluvium from mixed sources. Slopes range from 0 to 5 percent. The mean annual precipitation is 7 to 12 inches. The mean annual air temperature is 56 to 70 degrees F. The frost-free period is 165 to 280 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Anthony, Brazito, and Gila soils. Anthony and Gila soils are coarse-loamy. Brazito soils are coarser than loamy fine sand in all parts.
DRAINAGE AND PERMEABILITY: Somewhat excessively drained. Very low and low runoff. Moderately rapid permeability.
USE AND VEGETATION: Vinton soils are used for grazing and irrigated cropland. The present vegetation is mesquite, catclaw and annual grasses.
DISTRIBUTION AND EXTENT: Southern and west central Arizona, southern New Mexico, and west Texas. This soil occurs in LRR-D, MLRAs are 40, 41, and 42. This series is moderately extensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Phoenix, Arizona
SERIES ESTABLISHED: Lower Rio Grande Watershed Conservation Survey, New Mexico, 1940.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - The zone from 0 to 12 inches (Ap horizon)
Entisol feature - The absence of diagnostic horizons
Fluvial feature - Irregular decrease in organic carbon in the zone from 12 to 60 inches (C1, C2, C3, C4 horizons)
Classified according to Soil Taxonomy, Second Edition, 1999; Keys to Soil Taxonomy, Tenth Edition, 2006.
Revised for the correlation of AZ661, 2/2009, WWJ