LOCATION NAZARIO NMEstablished Series
TAXONOMIC CLASS: Fine-loamy over sandy or sandy-skeletal, mixed, superactive, mesic Aridic Calciustepts
TYPICAL PEDON: Nazario gravelly loam--on a slightly convex summit sloping 5 percent to the southwest at 6,890 feet elevation--woodland. (Colors are for dry soil unless otherwise noted. When described, the soil was moist from 0 to 8 inches and dry below.)
ABk--0 to 2 inches; brown (7.5YR 5/3) gravelly loam, brown (7.5YR 4/3) moist; moderate coarse platy structure parting to weak medium granular; soft, very friable, slightly sticky and slightly plastic; few fine and common very fine roots; few very fine irregularly shaped pores; 20 percent gravel and 5 percent cobbles; strongly effervescent, secondary calcium carbonate segregated as few fine irregularly shaped coats on undersides of rock fragments; slightly alkaline (pH 7.6); clear smooth boundary. (2 to 4 inches thick)
Bk1--2 to 7 inches; light brown (7.5YR 6/3) gravelly loam, brown (7.5YR 4/3) moist; moderate coarse subangular blocky structure; soft, very friable, slightly sticky and slightly plastic; few fine and common very fine roots; few fine and few very fine tubular pores; 15 percent gravel and 5 percent cobbles; violently effervescent, secondary calcium carbonate segregated as common fine irregularly shaped coats on faces of peds and on rock fragments; moderately alkaline (pH 8.2); clear smooth boundary. (3 to 11 inches thick)
Bk2--7 to 15 inches; pinkish white (7.5YR 8/2) gravelly loam, light brown (7.5YR 6/3) moist; weak coarse platy structure parting to moderate coarse subangular blocky; slightly hard, friable, slightly sticky and slightly plastic; few medium, few fine, and common very fine roots; few very fine tubular pores; 15 percent gravel; violently effervescent, matrix is impregnated with secondary calcium carbonate; strongly alkaline (pH 8.6); clear wavy boundary. (6 to 11 inches thick)
Bk3--15 to 24 inches; pink (7.5YR 8/3) gravelly loam, light brown (7.5YR 6/3) moist; moderate coarse subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; few medium, few fine, and few very fine roots; few very fine tubular pores; 20 percent gravel; violently effervescent, matrix is impregnated with secondary calcium carbonate; strongly alkaline (pH 8.6); abrupt wavy boundary. (6 to 15 inches thick)
2BCk1--24 to 43 inches; reddish brown (2.5YR 5/4) very gravelly loamy coarse sand, reddish brown (2.5YR 4/4) moist; single grain; loose, slightly sticky and nonplastic; few medium and few very fine roots; 40 percent gravel and 5 percent cobbles; strongly effervescent, secondary calcium carbonate segregated as common fine and medium irregularly shaped coats on rock fragments and coarse sand grains; moderately alkaline (pH 8.2); clear smooth boundary. (8 to 22 inches thick)
2BCk2--43 to 52 inches; reddish brown (2.5YR 5/4) gravelly loamy coarse sand, reddish brown (2.5YR 4/4) moist; massive; soft, very friable, slightly sticky and nonplastic; few medium and few fine roots; 20 percent gravel; strongly effervescent, secondary calcium carbonate segregated as few fine and medium irregularly shaped coats on rock fragments and sand grains; moderately alkaline (pH 8.0); clear smooth boundary. (0 to 15 inches thick)
2C1--52 to 67 inches; light reddish brown (5YR 6/4) coarse sand, reddish brown (5YR 5/4) moist; single grain; loose, nonsticky and nonplastic; few fine roots; 10 percent gravel; slightly effervescent; slightly alkaline (pH 7.8); clear smooth boundary. (11 to 30 inches thick)
2C2--67 to 94 inches; reddish brown (2.5YR 5/4) gravelly coarse sand, reddish brown (2.5YR 4/4) moist; massive; soft, very friable, nonsticky and nonplastic; 25 percent gravel; slightly effervescent; slightly alkaline (pH 7.8).
TYPE LOCATION: Santa Fe County, New Mexico; about 3.5 miles west-northwest of downtown Santa Fe; 325 feet east and 350 feet south of the northwest corner of section 21, T.17N., R.9E.; USGS Santa Fe 7.5 minute topographic quadrangle; Latitude 35 degrees 41 minutes 44 seconds North and Longitude 105 degrees 59 minutes 55 seconds West, NAD 27.
RANGE IN CHARACTERISTICS:
Soil moisture - The soil moisture control section is moist in all parts during the 60 days following the winter solstice. It is moist in some part less than 40 percent and moist in all parts less than 25 percent of the time when the soil temperature at 20 inches is above 41 degrees F. The soils are driest in May and June. The soil moisture regime is aridic ustic.
Mean annual soil temperature - 49 to 52 degrees F.
Depth to calcareous material (as visible secondary calcium carbonate) - 0 to 1 inch
Depth to calcic horizon - 2 to 15 inches
Depth to lithologic discontinuity of sandy material - 19 to 34 inches
Lithology of rock fragments: granite, gneiss, and schist
Particle-size control section (weighted averages)
Upper part
Silicate clay content: 18 to 24 percent
Sand content: 40 to 60 percent
Fine sand and coarser content: 45 to 70 percent
Rock fragment content: 15 to 25 percent
Lower part
Silicate clay content: 0 to 8 percent
Sand content: 80 to 90 percent
Fine sand and coarser content: 85 to 95 percent
Rock fragment content: 35 to 45 percent
Reaction - slightly alkaline to moderately alkaline in the surface; moderately alkaline to strongly alkaline in the Bk horizons; moderately alkaline in the 2Ck horizons; slightly alkaline to moderately alkaline in the 2C horizons
ABk horizon
Value: 5 or 6 dry, 3 or 4 moist
Chroma: 2 or 3, dry or moist
Texture: gravelly loam or very gravelly loam
Rock fragments: total range is 20 to 50 percent
20 to 45 percent gravel
0 to 5 percent cobbles
Calcium carbonate equivalent: 1 to 15 percent
Bk1 horizon
Value: 5 or 6 dry, 4 or 5 moist
Chroma: 2 or 3, dry or moist
Texture: gravelly loam or gravelly sandy loam
Rock fragments: total range is 15 to 35 percent
15 to 30 percent gravel
0 to 5 percent cobbles
Calcium carbonate equivalent: 5 to 15 percent
Bk2 and Bk3 horizons
Value: 6 through 8 dry, 5 through 7 moist
Chroma: 1 through 4, dry or moist
Texture: gravelly loam, gravelly sandy loam, or gravelly coarse sandy loam
Rock fragments: total range is 15 to 35 percent
15 to 30 percent gravel
0 to 5 percent cobbles
Calcium carbonate equivalent: 15 to 30 percent
Salinity, mmhos/cm: 0 to 2
Sodicity, SAR: 0 to 4
2BCk horizons
Hue: 2.5YR or 5YR
Value: 5 through 7 dry, 4 through 6 moist
Chroma: 3 through 6, dry or moist
Texture: very gravelly loamy coarse sand, gravelly loamy coarse sand, gravelly coarse sand, or very gravelly coarse sand
Rock fragments: total range is 25 to 55 percent
25 to 55 percent gravel
0 to 5 percent cobbles
Calcium carbonate equivalent: 1 to 5 percent
2C horizons
Hue: 2.5YR, 5YR, or 7.5YR
Value: 5 or 6 dry, 4 or 5 moist
Chroma: 4 or 6, dry or moist
Texture: coarse sand, gravelly coarse sand, very gravelly coarse sand, or very gravelly loamy coarse sand
Rock fragments: total range is 10 to 55 percent
10 to 55 percent gravel
0 to 5 percent cobbles
Other features: some pedons have buried horizons ranging in texture from loam to very gravelly coarse sandy loam
COMPETING SERIES: At present, there are no other series in this family.
GEOGRAPHIC SETTING: Nazario soils are on narrow beveled summits and shoulders of erosional fan remnants. They formed in alluvium derived from Precambrian granite, gneiss, and schist and Quaternary loess over residuum derived from Tertiary granitic fanglomerate and sandstone. Slopes are 2 to 15 percent. Elevation ranges from 5,600 to 7,500 feet. The mean annual precipitation is 12 to 15 inches with about 45 percent falling as rain from high-intensity convective thunderstorms between July and September. The mean annual air temperature is 47 to 50 degrees F. The frost-free period is 140 to 160 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Horcado, Encantado, and Tanoan soils. Horcado and Encantado soils are sandy-skeletal and occur on backslopes of erosional fan remnants. Tanoan soils are coarse-loamy and occur on shoulders and footslopes of erosional fan remnants.
DRAINAGE AND PERMEABILITY: Well drained; medium surface runoff; permeability is moderate in the upper part of the profile and very rapid in the lower part.
USE AND VEGETATION: Nazario soils are used for urban development, livestock grazing, and recreation. The historic climax vegetation is twoneedle pinyon, oneseed juniper, New Mexico feathergrass, black grama, galleta, sideoats grama, muttongrass, and blue grama. The ecological site is Juniperus monosperma-Pinus edulis/Fallugia paradoxa-Chrysothamnus nauseosus/Bouteloua hirsuta-Bouteloua gracilis(F036XB136NM).
DISTRIBUTION AND EXTENT: Nazario soils are of small extent on the southeastern Espanola Basin part of the Basin and Range province in northcentral New Mexico. The MLRA is 36.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Bozeman, Montana
SERIES ESTABLISHED: Santa Fe County, New Mexico; Santa Fe Area Soil Survey Update; 2008. Nazario is a street name in Santa Fe.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - The zone from the soil surface to a depth of about 2 inches. (ABk horizon)
Calcic horizon - The zone from 7 to about 24 inches. (Bk2 and Bk3 horizons)
Lithologic discontinuity - The abrupt change to sandy material at about 24 inches. (2BCk1, 2Ck2, 2C1, and 2C2 horizons)
Particle-size control section - The zone from 10 to 40 inches (part of Bk2, Bk3, and part of 2BCk1 horizon)
Series control section - The zone from 0 to 60 inches.
Classified according to Keys to Soil Taxonomy, Tenth Edition, 2006.