LOCATION PINITOS NMEstablished Series
TAXONOMIC CLASS: Fine-loamy, mixed, superactive, mesic Aridic Haplustalfs
TYPICAL PEDON: Pinitos sandy loam--rangeland. (Colors are for dry soil unless otherwise noted.)
A--0 to 2 inches; light brown (7.5YR 6/4) sandy loam, brown (7.5YR 4/4) moist; weak fine granular structure; soft, very friable, nonsticky and nonplastic; few very fine and fine roots; common very fine irregular pores; neutral; clear smooth boundary. (1 to 4 inches thick)
Bt1--2 to 6 inches; brown (7.5YR 5/4) sandy clay loam, brown (7.5YR 4/4) moist; weak medium subangular blocky structure; slightly hard, friable, slightly sticky and nonplastic; common very fine and fine and few medium roots common very fine irregular and few very fine tubular pores; few thin clay films on faces of peds and lining pores; neutral; clear smooth boundary. (3 to 11 inches thick)
Bt2--6 to 14 inches; brown (7.5YR 5/4) sandy clay loam, brown (7.5YR 4/4) moist; moderate medium subangular blocky structure; hard, firm, sticky and slightly plastic; common fine and very fine and few medium roots; common fine tubular pores; many moderately thick clay films on faces of peds and lining pores; slightly alkaline; clear smooth boundary. (6 to 13 inches thick)
Bt3--14 to 24 inches; light brown (7.5YR 6/4) sandy clay loam, brown (7.5YR 4/4) moist; weak coarse subangular blocky structure; hard, friable, slightly sticky and nonplastic; common very fine and few fine roots; few fine tubular pores; few thin clay films lining pores and bridging between sand grains; slightly alkaline; abrupt smooth boundary. (0 to 12 inches thick)
Bk1--24 to 38 inches; light yellowish brown (10YR 6/4) sandy loam, yellowish brown (10YR 5/6) moist; massive; soft, very friable, nonsticky and nonplastic; few very fine roots; few very fine irregular pores; slightly effervescent; slightly alkaline; clear smooth boundary. (10 to 14 inches thick)
Bk2--38 to 70 inches; light yellowish brown (10YR 6/4) sandy loam, yellowish brown (10YR 5/6) moist; massive; slightly hard, friable, nonsticky and nonplastic; few very fine roots; few very fine irregular pores; strongly effervescent; calcium carbonate occurs as common medium irregular soft masses; slightly alkaline.
TYPE LOCATION: Cibola County, New Mexico; about one mile east of Balok Ranch, 1,080 feet west, 700 feet north of the southeast corner of section 3, T. 8 N., R. 16 W. 108 degrees, 30 minutes, 22 seconds west longitude; 35 degrees, 56 minutes, 44 seconds north latitude.
RANGE IN CHARACTERISTICS:
Soil Moisture - The soil moisture control section is moist in all parts 30 to 40 consecutive days during the 120 days following the winter solstice and is moist in all parts about 35 percent of the time that the soil temperature at 2 inch depths is above 41 degrees F. These soils are driest during May and June. Aridic ustic moisture regime.
Soil Temperature - 49 to 53 degrees F.
Depth to Calcium Carbonate - 18 to 31 inches.
Depth to the base of the Bt horizon - 18 to 31 inches.
Other features: Bt horizons are underlain by calcareous C horizons in some pedons.
Hue: 7.5YR or 10YR
Value: 5 or 6 dry, 3 or 4 moist
Chroma: 3 or 4 moist
Texture: Sandy loam, fine sandy loam, or loam.
Hue: 7.5YR or 10YR
Value: 4 or 5 dry, 3 or 4 moist
Chroma: 4 through 6 dry
Texture: Sandy clay loam or clay loam
Clay Content: 20 to 35 percent
Sand Content: More than 35 percent.
Bk or C Horizons
Hue: 7.5YR or 10YR
Value: 4 through 6 dry, 3 through 5 moist
Chroma: 4 through 6
Texture: Sandy loam, sandy clay loam or clay loam
Calcium Carbonate Equivalent: Less than 15 percent
COMPETING SERIES: These are the
Bigbow (KS), Bososnoak (NM),
Fort Collins (CO),
Toluca (MT), and
Wagonhound (WY) series.
Arnor soils are underlain by weathered granite at 60 to 80 inches.
Augustine soils are deep, and have mean annual temperatures greater than 49 degrees F and frost-free period longer than 120 days.
Bosonoak soils have hues redder than 7.5YR and sand content less than 35 percent.
Carri, Celacy, Celavar, Evpark, Gateson, Nyjack, Oldwolf, and Ribera soils are moderately deep to a lithic or paralithic contact.
Dermala and Iwela soils have greater than 15 percent rock fragments in the particle-size control section.
Flugle and Pinitos soils are warmer, are not continuously moist, in most years, in some part of the soil moisture control section November through April receiving less effective winter moisture.
Parkelei soils have rock fragments and have hues redder than 7.5YR.
Lykorly and Orlie soils have less than 35 percent sand in the particle-size control section.
Arwite, Bigbow, Dalhart, Deekay, Elwop, Fort Collins, Gateson, Oldwolf, Olnest, Rauzi, Rockybutte, Stoneham, Toluca, and Wagonhound soils receive most of the annual precipitation in the spring and fall and are in LRR-E or LRR-G.
GEOGRAPHIC SETTING: Pinitos soils are on hills, mesas, cuestas and fan terraces. Slopes are 1 to 15 percent. The soils formed in eolian and alluvial materials derived from sandstone and shale. Elevation is 6,700 to 7,800 feet. Average annual temperature is 45 to 52 degrees F. Average annual precipitation is 14 to 16 inches. Frost-free period is 100 to 130 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Silkie and Catman soils. Silkie soils have greater than 35 percent clay in the control section. Catman soils have more than 60 percent clay in the control section.
DRAINAGE AND PERMEABILITY: Well drained; medium runoff; moderate permeability.
USE AND VEGETATION: These soils are used as rangeland. Principal vegetation is blue grama, pinyon and juniper.
DISTRIBUTION AND EXTENT: Westcentral and northcentral New Mexico. This series is of moderate extent. MLRA 35.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Phoenix, Arizona
SERIES ESTABLISHED: Cibola County, New Mexico, 1985.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric Epipedon: The zone from the surface to a depth of 2 inches (A Horizon)
Argillic Horizon: The zone from about 2 to 24 inches (Bt1, Bt2, Bt2 Horizons)
Aridic feature: The soils are dry more than 0.6 of the time in some part of the SMCS.