LOCATION GATLIN NMEstablished Series
TAXONOMIC CLASS: Cindery, mixed, mesic Vitritorrandic Haplustolls
TYPICAL PEDON: Gatlin very gravelly loam-rangeland (colors are for dry soil unless otherwise noted).
A--0 to 4 inches; dark brown (10YR 3/3) very gravelly loam, very dark grayish brown (10YR 3/2) moist; weak fine granular and weak fine subangular blocky structure; loose, friable, slightly sticky and slightly plastic; many fine and very fine roots; 45 percent gravel-size cinders; slightly alkaline (pH 7.4); abrupt smooth boundary. (2 to 6 inches thick)
Bk1--4 to 10 inches; brown (10YR 5/3) very gravelly loam, very dark brown (10YR 2/2) moist; weak fine subangular blocky structure; loose, very friable, slightly sticky and slightly plastic; many fine and very fine roots, about 40 percent gravel size cinders; strongly effervescent; 5 percent calcium carbonate; moderately alkaline (pH 8.4); abrupt smooth boundary. (6 to 15 inches thick)
Bk2--10 to 11 inches; very pale brown (10YR 8/2) very gravelly loamy coarse sand, light yellowish brown (10YR 6/4) moist; weakly cemented layers or plates; very hard, very firm; 40 percent fine gravel size cinders; violently effervescent; 35 percent calcium carbonate; strongly alkaline (pH 8.5); abrupt wavy boundary. (1 to 3 inches thick)
Bk3--11 to 16 inches; very pale brown (10YR 7/3) extremely gravelly loamy coarse sand, brown (10YR 5/3) moist; weakly cemented into weak fine subangular blocks; soft, very friable; 60 percent fine gravel size cinders; strongly effervescent; 6 percent calcium carbonate; moderately alkaline (pH 8.3); abrupt smooth boundary. (5 to 18 inches thick)
C1--16 to 28 inches; dark gray (10YR 4/1) extremely gravelly coarse sand, black (10YR 2/1) moist; single grained; loose; 65 percent fine gravel size cinders; moderately alkaline (pH 8.2); abrupt smooth boundary. (12 to 18 inches thick)
C2--28 to 60 inches; very dark gray (10YR 3/1) extremely gravelly coarse sand, black (10YR 2/1) moist; single grained; loose; 65 percent fine gravel size cinders; moderately alkaline (pH 8.2).
TYPE LOCATION: Catron County, New Mexico; southeast of the intersection of U S. Highway 60 and New Mexico State Road 19 in SW 1/4, NW 1/4, Sec. 10 T. 15, R. 19 W.
RANGE IN CHARACTERISTICS:
Solum thickness: 10 to 17 inches
Coarse fragments: gravel sized cinders.
Soil moisture: Aridic ustic moisture regime
A horizon
Hue: 10YR
Value: 3 to 5 dry; 3 or 4 moist
Chroma: 2 or 3 dry or moist
Texture: very gravelly loam, very gravelly fine sandy loam
Coarse fragments: 40 to 55 percent
Bk horizon (upper part)
Hue: 10YR
Value: 4 or 5 dry; 2 or 3 moist
Chroma: 2 or 3 dry or moist
Texture: very gravelly loam, very gravelly clay loam
Coarse fragments: 35 to 50 percent
Bk horizon (lower part)
Hue: 10YR
Value: 3 to 6 dry; 2 to 5 moist
Chroma: 1 to 3 dry or moist
Texture: sandy loam, coarse sand, coarse sandy loam, loamy coarse sand
Coarse fragments: 35 to 75 percent gravel size cinders
C horizon
Hue: 10YR
Value: 3 to 7 dry; 2 to 5 moist
Chroma: 1 to 3 dry or moist
Texture: sandy loam, coarse sand, coarse sandy loam, loamy coarse sand
Coarse fragments: 35 to 75 percent gravel size cinders
Cementation: The C horizon has discontinuous layers cemented with lime 1/2 to 18 inches thick spaced 1/4 to several feet apart.
COMPETING SERIES: There are no competing series.
GEOGRAPHIC SETTING: These soils formed in volcanic cinders and ash on gently sloping cones or fans at elevations of 6,500 to 7,200 feet. The average annual precipitation is about 10 to 14 inches and the mean annual temperature is about 47 to 50 degrees F. The average frost free season is 110 to 120 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These include Cabezon, Ceniza, Manzano, Rudd and Tejana series. Cabezon and Rudd soils have a lithic contact within 20 inches. Ceniza and Manzano soils have an overthickened mollic epipedon. Additionally, Manzano soils lack cinders. Tejana soils have a lithologic discontinuity at 20 to 40 inches.
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Well drained; medium runoff; moderately low saturated hydraulic conductivity.
USE AND VEGETATION: Principle use is rangeland. The native vegetation is black grama, bottlebrush squirreltail and western wheatgrass.
DISTRIBUTION AND EXTENT: Gatlin soils are on and around volcanic cinder cones in northwestern Catron County, New Mexico. They are of small extent. MLRA is 35.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Phoenix, Arizona
SERIES ESTABLISHED: Catron County, Northern Part, New Mexico; 1982
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Mollic epipedon - The zone from 0 to 10 inches (A horizon)
Classified according to Keys to Soil Taxonomy Tenth Edition, 2006
The classification was reviewed 09/2005 because the classification did not have a mineralogy class Cindery, mixed, mesic Aridic Haplustolls. The series could be in an Aridic Calciustolls if it has the identifiable secondary carbonates. The current classification is based on lab data. Future field investigations should be conducted to ensure proper taxonomic classification.
ADDITIONAL DATA:
Laboratory data are available on this pedon - pedon number 80P0469 (pedon ID number 80NM 003 023) at the National Soil Survey Laboratory in Lincoln, Nebraska. These lab data support the classification.
OSED scanned by SSQA. Last revised by state on 11/81.