LOCATION DOZER NM+AZEstablished Series
TAXONOMIC CLASS: Loamy-skeletal, carbonatic, thermic Lithic Torriorthents
TYPICAL PEDON: Dozer extremely cobbly loam - rangeland. (Colors are for dry soil unless otherwise stated.)
A--0 to 1 inch; pale brown (10YR 6/3), crushed, extremely cobbly loam, brown (10YR 5/3), crushed, moist; moderate thin platy structure parting to moderate very fine granular; slightly sticky and slightly plastic, few very fine roots throughout; 19.0 percent clay; 30 percent subangular limestone gravel and 30 percent subangular limestone cobbles; violently effervescent throughout; moderately alkaline; abrupt smooth boundary. (0 to 3 inches thick)
C--1 to 13 inches; light gray (10YR 7/2), crushed, very gravelly loam, brown (10YR 5/3), crushed, moist; massive; slightly sticky and slightly plastic, few very fine roots throughout; 19.0 percent clay; 25 percent subangular limestone gravel and 15 percent subangular limestone cobbles; violently effervescent throughout; moderately alkaline; abrupt smooth boundary.
R--13 inches; hard limestone
TYPE LOCATION: Otero County, New Mexico; approximately 1.2 miles west and 25.4 miles south of Oro Grande; NW 1/4, NW 1/4 sec. 35, T. 26 S., R. 8 E; UTM zone 13, 0395910E, 3541379N; NAD 27; USGS Desert SE topographic quadrangle; lat. 32 degrees, 0 minutes, 19 seconds N. and long. 106 degrees, 6 minutes, 6 seconds W.
RANGE IN CHARACTERISTICS:
Soil Moisture: The moisture control section is usually dry in all parts more than three-fourths of the time that the soil temperature exceeds 41 degrees F. Typic aridic soil moisture regime.
Soil temperature: 62 to 69 degrees F.
Depth to bedrock: 6 to 20
Clay content: 18 to 35 percent
Coarse fragments: 35 to 65 percent
Calcium carbonates equivalent: 40 to 60 percent
A horizon
Hue: 10YR, 7.5YR, 2.5Y
Value: 5 to 8 dry, 4 to 6 moist
Chroma: 2 to 4, dry or moist
Coarse fragments: limestone fragments; 35 to 65 percent total; 10 to 35 percent gravel; 10 to 35 percent cobbles
C horizon
Hue: 10YR, 7.5YR, 2.5Y
Value: 5 to 8 dry, 4 to 6 moist
Chroma: 2 to 4, dry or moist
Texture: very gravelly, very cobbly, extremely cobbly loam, clay loam
Coarse fragments: limestone fragments; 35 to 65 percent total; 10 to 35 percent gravel; 10 to 35 percent cobbles
COMPETING SERIES: These are the Birdspring (NV), Saguaro (AZ), and St. Thomas (NV), and Umberci (CA) series. The Birdspring and St. Thomas and Umberci soils are intermittently moist in the upper part of the moisture control section for less than 20 days during the summer months. These soils also receive winter precipitation and support vegetation typical of the Mojave Desert (MLRA 30) environment. Mariscal soils have mean annual soil temperatures greater than 67 degrees and are derived from chalky and marly material. Saguaro soils have 5 to 20 percent clay in the particle size control section. Umberci soils have 8 to 14 percent clay in the particle-size control section.
GEOGRAPHIC SETTING: Dozer soils formed in residuum from limestone on gently sloping to very steep hills. Slopes range from 5 to 65 percent. Mean annual precipitation ranges from 8 to 12 inches, and mean annual temperature ranges from 60 to 67 degrees F. Frost-free days range from 190 to 250 and elevation ranges from 2,500 to 4,200 feet.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Copia, Hueco, Wink, and Nations soils. These soils are all deeper than 60 inches to bedrock. Hueco and Nations soils are moderately deep to petrocalcic horizons.
DRAINAGE AND PERMEABILITY: Well drained. Permeability is moderately slow above very slowly permeable limestone bedrock. Runoff is very high.
USE AND VEGETATION: Used for livestock grazing. Vegetation is of the desert shrub type consisting of sideoats grama, threeawn spp., black grama, slender tridens, bush muhly, plains bristlegrass, prickleaf dogweed, ocotillo, whitethorn acacia, creosotebush, mariola, and sotol.
DISTRIBUTION AND EXTENT: Trans-Pecos of Texas and southern Arizona and New Mexico in MLRAs 41 and 42. The series is of small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Phoenix, Arizona
SERIES ESTABLISHED: Otero County, New Mexico; 2001.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - 0 to 7 inches (A and C horizons, mixed to 7 inches)
Lithic contact - the contact with hard bedrock at 13 inches
Classified according to Soil Taxonomy, Second Edition, 1999; Keys to Soil Taxonomy, Tenth Edition, 2006.
Revised for the correlation of AZ675, 5/2009, WWJ