LOCATION TAFOYA             NM

Established Series
Rev. PGM/BDS/CDL
03/2003

TAFOYA SERIES

The Tafoya series consists of deep, well drained, slowly permeable soils that formed in alluvium and colluvium. These soils are on foothills and mountain slopes and have slopes ranging from 9 to 45 percent. Average annual precipitation is about 16 inches and the average annual air temperature is about 47 degrees F.

TAXONOMIC CLASS: Clayey-skeletal, mixed, superactive, mesic Aridic Argiustolls

TYPICAL PEDON: Tafoya stony loam-rangeland. (Colors are for dry soil unless otherwise noted.)

A--0 to 6 inches; dark grayish brown (10YR 4/2) stony loam, very dark grayish brown (10YR 3/2) moist; weak fine granular structure; slightly hard, friable, slightly sticky, slightly plastic; many fine roots; many fine pores; 15 percent stones, 5 percent cobbles, 10 percent pebbles; neutral; clear wavy boundary. (5 to 9 inches thick)

Bw--6 to 14 inches; brown (7.5YR 4/2) very stony silt loam, dark brown (7.5YR 3/2) moist; moderate fine granular and moderate fine subangular blocky structure; hard, friable, slightly sticky, plastic; many fine roots; many fine pores; 20 percent stones; 20 percent cobbles, 10 percent pebbles; neutral, clear wavy boundary. (5 to 10 inches thick)

Bt1--14 to 25 inches; light brown (7.5YR 6/4) extremely gravelly clay, brown (7.5YR 5/4) moist; moderate fine subangular blocky structure; hard, firm, slightly sticky, plastic; common fine roots; few fine pores; common thin clay films on peds and rock fragments; 50 percent pebbles, 10 percent cobbles; 5 percent stones; neutral; clear wavy boundary. (10 to 14 inches thick)

BC--25 to 39 inches; brown (7.5YR 5/4) very gravelly clay, dark yellowish brown (10YR 4/4) moist; moderate fine subangular blocky structure; hard, firm, plastic; few fine roots; few fine tubular pores; 50 percent fine gravel, 10 percent cobbles; neutral, clear wavy boundary. (13 to 18 inches thick)

C--39 to 46 inches; pale brown (10YR 6/3) very gravelly sandy clay loam, brown (10YR 5/3) moist; massive; hard, friable, plastic; few fine roots; few fine tubular pores; 30 percent pebbles, 10 percent cobbles; neutral; gradual wavy boundary. (7 to 20 inches thick)

R--46 inches; igneous bedrock.

TYPE LOCATION: Colfax County, New Mexico; about 20 miles east of Maxwell; 320 feet south and 160 feet east of the NW corner of section 33, T. 27N., R.26E.

USE AND VEGETATION: Native rangeland, wildlife habitat, recreation, and watershed. Principal vegetation is blue grama, sideoats grama, little bluestem, pinyon pine, juniper, and Gambel oak.

DISTRIBUTION AND EXTENT: Northern, New Mexico. The series is inextensive.

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Phoenix, Arizona

SERIES ESTABLISHED: Colfax County, New Mexico, 1974.

OSED scanned by SSQA. Last revised by state on 3/83.

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National Cooperative Soil Survey
U.S.A.