LOCATION EMBUDO NMEstablished Series
TAXONOMIC CLASS: Coarse-loamy, mixed, superactive, mesic Typic Haplocambids
TYPICAL PEDON: Embudo gravelly fine sandy loam--rangeland. (Colors are for dry soil unless otherwise stated.)
A--0 to 4 inches; brown (10YR 5/3) gravelly fine sandy loam, dark brown (10YR 3/3) moist; weak fine granular structure; soft, very friable, nonsticky and nonplastic; many fine roots; many fine pores; 15 percent fine gravel; moderately alkaline; abrupt smooth boundary. (2 to 10 inches thick)
Bw--4 to 12 inches; brown (10YR 5/3) gravelly sandy loam, brown (10YR 4/3) moist; weak medium subangular blocky structure; soft, friable; nonsticky and nonplastic; many fine roots; few fine tubular pores; 35 percent fine gravel; moderately alkaline; abrupt wavy boundary. (8 to 14 inches thick)
Bk1--12 to 20 inches; light brownish gray (10YR 6/2) gravelly sandy loam, dark grayish brown (10YR 4/2) moist; massive; slightly hard, friable, nonsticky and nonplastic; many fine roots; few fine tubular pores; 20 percent fine gravel; slightly effervescent with carbonates on undersides of gravel; moderately alkaline; clear wavy boundary. (5 to 12 inches thick)
2Bk2--20 to 60 inches; pale brown (10YR 6/3) gravelly loamy coarse sand, brown (10YR 5/3) moist; single grained; loose, nonsticky and nonplastic; few very fine roots in upper part; 35 percent fine gravel; slightly effervescent; less carbonates on gravel than Bk1 horizon; moderately alkaline.
TYPE LOCATION: Bernalillo County, New Mexico; 50 feet north and 100 feet east of junction of Moon and Signal streets, Elena Gallegos Grant; N1/2 sec. 17, T.11N., R.4E.
RANGE IN CHARACTERISTICS:
Soil Moisture: Intermittently moist in some part of the soil moisture control section December through March and July through October. The soil is driest during May and June. Typic aridic moisture regime.
Soil Temperature: 56 to 59 degrees F.
Depth to sandy layer (2Bk horizon): 18 to 30 inches
Rock fragments above the 2Bk2 horizon: 5 to 35 percent granite gravel on a weighted average
A and Bw horizons
Value: 4 through 6 dry, 3 through 5 moist
Chroma: 2 through 4
Texture: Coarse sandy loam through loam
Bk horizon
Value: 4 through 6 dry, 3 through 5 moist
Chroma: 2 through 6
Texture: Dominantly coarse sandy loam and sandy loam
Calcium carbonate equivalent: 2 to 8 percent
2Bk horizon
Colors same as Bk
Rock fragments: 10 to 70 percent gravel
Calcium carbonate equivalent: 2 to 8 percent
COMPETING SERIES: These are the Hessing (NV), Koyen (NV), Monue (UT), Quima (NV), Unionville (NV), and Wall (WY) series. Hessing and Wall soils have mean annual soil temperatures less than 54 degrees F. Hessing, Koyen, Unionville and Quima soils are usually dry in all parts of the soil moisture control section during the warm summer months. Monue soils have hue of 7.5YR or redder.
GEOGRAPHIC SETTING: Embudo soils are on fan terraces ranging from 5,000 to 6,000 feet in elevation. They occupy side slopes and depressional areas adjacent to arroyo channels but are not flooded or overflowed. The parent material is mixed alluvium from coarse-grained granitic rocks. The climate is semiarid continental. The annual temperature is 53 to 57 degrees F., and the frost-free season is 140 to 180 days. Annual precipitation ranges from 8 to 10 inches which is received during July through September and December through March.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Kokan, Tijeras, and Wink soils. Kokan soils are sandy-skeletal. Tijeras soils have an argillic horizon and Wink soils have a calcic horizon.
DRAINAGE AND PERMEABILITY: Well drained, medium runoff; moderate permeability in the upper part and very rapid below a depth of 20 inches.
USE AND VEGETATION: Embudo soils are used mainly for urban expansion and rangeland. Present vegetation is black grama, dropseed spp., snakeweed, Russian thistle, and Apache plume.
DISTRIBUTION AND EXTENT: Bernalillo County, New Mexico. These soils are of moderate extent. MLRA 42.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Phoenix, Arizona
SERIES ESTABLISHED: Albuquerque Area, New Mexico, 1973.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon: The zone from 0 to 4 inches. (A horizon)
Cambic horizon: The zone from 4 to 12 inches. (Bw horizon)
Classified according to Soil Taxonomy Second Edition, 1999.
This series was reclassified from thermic to mesic temperature regime based on a better understanding of the soil temperature regimes in New Mexico. The series was reclassified from Orthents to Cambids based on the redistribution of calcium carbonate.
ADDITIONAL DATA: S71NM-001-002, Lincoln Laboratory.