LOCATION FANGIO NMTentative Series
TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive, mesic Calcidic Haplustalfs
TYPICAL PEDON: Fangio extremely cobbly loam, on an upper backslope of an eroded fan remnant sloping 35 percent to the southeast at 145 degrees, at 7,268 feet elevation; pion and juniper woodland. (Colors are for dry soil unless otherwise noted. When described on October 29th, 2004, the soil was dry throughout.) Surface covered with 35 percent gravel, 30 percent cobbles, and 1 percent stones inter-filled with mostly pine needles and some twigs and leaves.
A--0 to 4 inches (0 to 10 cm); brown (7.5YR 4/3) extremely cobbly loam, dark brown (7.5YR 3/3) moist; weak fine granular structure; slightly hard, friable; slightly sticky and slightly plastic; few very fine, few fine, and many medium roots; common fine irregularly shaped pores; 30 percent gravel, 35 percent cobbles, and 1 percent stones; neutral (pH 7.1); clear smooth boundary. (2 to 5 inches thick)
AB--4 to 8 inches (10 to 20 cm); brown (7.5YR 4/4) extremely cobbly loam, brown (7.5YR 4/3) moist; weak medium subangular blocky structure parting to moderate medium granular; slightly hard, friable, slightly sticky and slightly plastic; few very fine, few fine, and many medium roots; common fine irregularly shaped pores; 30 percent gravel and 35 percent cobbles; strongly effervescent; slightly alkaline (pH 7.6); clear smooth boundary. (3 to 10 inches thick)
Btk1--8 to 12 inches (20 to 31 cm); brown (7.5YR 5/4) very cobbly loam, brown (7.5YR 4/4) moist; weak medium subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; many fine and common medium roots; few fine irregularly shaped pores; 25 percent gravel and 25 cobbles; few faint clay films located on ped faces; violently effervescent, secondary calcium carbonate accumulations as few medium irregularly shaped masses throughout matrix; neutral (pH 7.3); gradual wavy boundary.
Btk2--12 to 21 inches (31 to 52 cm); reddish brown (5YR 5/4) very cobbly clay loam, reddish brown (5YR 4/4) moist; weak medium subangular blocky structure; very firm, hard, slightly sticky, slightly plastic; few medium and few fine roots; few fine irregularly shaped pores; 10 percent gravel, 25 percent cobbles, and 5 percent paragravel; few distinct clay films located on ped faces; violently effervescent, secondary calcium carbonate accumulations as many medium irregularly shaped masses throughout horizon; slightly alkaline (pH 7.4); gradual wavy boundary.
Btk3--21 to 28 inches (52 to 70 cm); reddish brown (5YR 5/4) cobbly clay loam, reddish brown (5YR 4/4) moist; moderate medium subangular blocky structure; hard, very firm, moderately sticky, moderately plastic; few medium and few fine roots; few fine irregularly shaped pores; 10 percent gravel, 20 percent cobbles, 10 percent paragravel; common distinct clay films on faces of peds; violently effervescent, secondary calcium carbonate accumulations as many coarse irregularly shaped masses throughout horizon; moderately alkaline (pH 8.0); gradual wavy boundary. (combined thicknesses of Btk horizons is 15 to 30 inches thick)
BCk--28 to 36 inches (70 to 91 cm); pink (5YR 7/4) cobbly clay loam, reddish brown (5YR 5/4) moist; weak fine subangular blocky structure; hard, very firm, moderately sticky, moderately plastic; few medium and fine roots; few fine irregularly shaped pores; 10 percent gravel, 10 percent cobbles, 1 percent stones, and 25 percent paragravel; violently effervescent, secondary calcium carbonate accumulations as many coarse irregularly shaped masses throughout horizon; moderately alkaline (pH 8.1); abrupt smooth boundary. (6 to 12 inches thick)
2BCk--36 to 79 inches (91 to 200 cm); reddish brown (2.5YR 5/4) clay loam, reddish brown (2.5YR 4/4) moist, massive; hard, very firm, moderately sticky and moderately plastic; few fine irregularly shaped pores; violently effervescent; slightly alkaline (pH 7.7); abrupt smooth boundary. (20 to 40 inches thick)
2Cr--79 to 89 inches (200 to 225 cm); moderately cemented shale bedrock.
TYPE LOCATION: Santa Fe County, New Mexico. About 1.3 miles east of Fangio Mesa, USGS Glorieta 7.5 minute topographic quadrangle; Latitude 35 degrees 30 minutes 17.3 seconds North and Longitude 105 degrees 46 minutes 39.9 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. Aridic Ustic soil moisture regime.
Soil Temperature: 48 to 50 degrees F (8.9 to 10.0 degrees C)
Depth to base of argillic horizon 19 to 33 inches
Depth to calcareous material (as visible secondary calcium carbonate) - 4 to 13 inches
Particle-size control section weighted averages:
Silicate clay content: 20 to 35 percent
Sand content: 25 to 35 percent
Rock fragment content: total range is 30 to 60 percent, 5 to 30 percent gravel, 15 to 30 percent cobbles (mostly rounded)
Reaction neutral at the surface to moderately alkaline in the subsurface
Salinity, mmhos/cm 0.2 to 2
Sodicity, SAR - 0 to 1
A horizon
Hues: 5YR to 10YR
Value: 3 to 5 dry, 3 or 4 moist
Chroma: 3 to 5, dry or moist
Rock fragments: 25 to 50 percent gravel, 20 to 35 percent cobbles , 1 percent stones(mostly rounded)
AB horizon
Hues: 5YR to 10YR
Value: 3 to 5 dry, 3 or 4 moist
Chroma: 3 to 5, dry or moist
Texture: very cobbly loam, extremely cobbly loam, very cobbly sandy loam, extremely cobbly sandy loam
Rock fragments: total range is 35 to 80 percent
15 to 50 percent gravel,
10 to 35 percent cobbles (mostly rounded)
Btk horizons
Hues: 5YR to 7.5YR
Value: 3 to 5 dry, 3 or 4 moist
Chroma: 3 to 5, dry or moist
Texture: cobbly loam, very cobbly loam, or very cobbly clay loam
Rock fragments: total range is 30 to 60 percent
5 to 30 percent gravel,
15 to 30 percent cobbles (mostly rounded)
Calcium carbonate content: 5 to 20 percent
BCk Horizons
Hues: 5YR to 7.5YR
Value: 4 to 7 dry, 4 or 5 moist
Chroma: 2 to 4, dry or moist
Texture: very gravelly sandy clay loam, gravelly sandy loam, cobbly clay loam, gravelly loam, very gravelly loam,
Rock fragments: total range is 15 to 60 percent
5 to 50 percent gravel,
0 to 15 percent cobbles (mostly rounded)
1 percent stones
Calcium carbonate content: 15 to 40 percent
2BCk Horizon
Hues: 2.5YR to 7.5YR
Value: 4 to 6 dry, 4 or 5 moist
Chroma: 3 to 5, dry or moist
Texture: clay loam, very gravelly coarse sandy loam, extremely gravelly coarse sand, extremely gravelly loamy coarse sand
Rock fragments: 0 to 60 percent gravel, 0 to 15 percent cobbles
Calcium carbonate content: 5 to 15 percent
COMPETING SERIES: The only known competitors are the Quagmeier and Tsezhin series. Quagmeier soils are very deep to hard sandstone and limestone, have hues that are more yellow, and is in a slightly warmer climate. Tsezhin soils do not have a paralithic contact within 80 inches.
GEOGRAPHIC SETTING: Fangio soils are located on linear to slightly convex upper backslopes of eroded fan remnants nested on undulating plateaus. They are formed in mixed alluvium mostly from Precambrian Age granite, gneiss, and schist with minor amounts of localized Triassic Age sandstone and shale over residuum weathered from shale. They are on slopes of 15 to 50 percent. Elevations are 6,600 to 8,000 feet, mean annual temperature ranges from 46 to 48 degrees, and mean annual precipitation typically ranges from 14 to 16 inches with the peak periods occurring from July through September and December through March. The frost-free period is 120 to 140 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Altega, Ortiz, and Predawn soils. Altega soils are fine-loamy, do not have a calcic horizon, and are on fan aprons. Ortiz soils are fine, do not have a calcic horizon, and are on lower backslopes of eroded fan remnants. Predawn soils are fine-loamy, have an abrupt textural change to the argillic horizon, and are on summits of eroded fan remnants.
DRAINAGE AND PERMEABILITY: Well drained; high surface runoff; moderately slow permeability.
USE AND VEGETATION: Fangio soils are used for livestock grazing and wildlife habitat. Present vegetation is blue grama, plains pricklypear, walkingstick cholla, oneseed juniper, twoneedle pion, and galleta.
DISTRIBUTION AND EXTENT: Fangio soils are of small extent on the northern Glorieta Slope part of the Pecos Valley section of the Great Plains physiographic province in northcentral New Mexico. The MLRA is 70A.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Phoenix, Arizona
SERIES PROPOSED: Santa Fe County, New Mexico, 2005. Fangio is the name of a mesa in Santa Fe County.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - surface to a depth of 8 inches (The A and AB horizons).
Argillic horizon 8 to 28 inches (The Btk horizons).
Calcic horizon 21 to 36 inches (the lower Btk and BCk horizons)
Paralithic contact 79 inches (to of 2Cr layer)
Classified according to Keys to Soil Taxonomy Tenth Edition, 2006.