LOCATION TROFES NMTentative Series
TAXONOMIC CLASS: Fine-loamy, mixed, active, mesic Ustic Gypsiargids
TYPICAL PEDON: Trofes loam--on a floodplain step sloping 2 percent to the south-southeast at 6,204 feet elevation--rangeland. (Colors are for dry soil unless otherwise noted. When described on May 23, 2002, the soil was dry throughout.)
A--0 to 2 inches; grayish brown (10YR 5/2) loam, brown (10YR 4/3) moist; moderate medium platy structure; soft, friable, slightly sticky and nonplastic; common medium and common fine roots; common medium, common fine, and few very fine tubular pores; slightly effervescent (1 percent calcium carbonate equivalent); moderately alkaline (pH 8.2); clear smooth boundary. (1 to 3 inches thick)
Bt--2 to 9 inches; brown (7.5YR 5/4) clay loam, brown (7.5YR 4/4) moist; strong medium subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; few fine and few very fine roots; common fine and few very fine tubular pores; many distinct clay films on faces of peds; slightly effervescent (2 percent calcium carbonate equivalent); moderately alkaline (pH 8.2); clear wavy boundary. (5 to 9 inches thick)
Btk1--9 to 15 inches; pink (7.5YR 7/3) clay loam, brown (7.5YR 5/4) moist; strong medium subangular blocky structure; slightly hard, firm, moderately sticky and slightly plastic; few fine and few very fine roots; few medium, common fine, and common very fine tubular pores; many distinct clay films on faces of peds; violently effervescent, secondary calcium carbonate segregated as many fine and medium irregularly shaped soft masses (18 percent calcium carbonate equivalent); moderately alkaline (pH 8.4); clear smooth boundary. (5 to 13 inches thick)
Btk2--15 to 23 inches; reddish brown (5YR 5/4) clay loam, reddish brown (5YR 4/4) moist; moderate medium subangular blocky structure; moderately hard, firm, moderately sticky and slightly plastic; few very fine roots; few medium, common fine, and common very fine tubular pores; many distinct clay films on faces of peds; strongly effervescent, secondary calcium carbonate segregated as few fine irregularly shaped soft masses (19 percent calcium carbonate equivalent); moderately alkaline (pH 8.4); clear wavy boundary. (6 to 12 inches thick)
Btky1--23 to 41 inches; reddish brown (5YR 5/4) clay loam, reddish brown (5YR 4/4) moist; moderate medium subangular blocky structure; slightly hard, friable, very sticky and slightly plastic; common medium interstitial pores; many prominent clay films on faces of peds; strongly effervescent, secondary calcium carbonate segregated as common fine irregularly shaped soft masses (19 percent calcium carbonate equivalent); secondary gypsum segregated as common fine irregularly shaped filaments (4 percent gypsum); moderately alkaline (pH 8.4); clear wavy boundary. (3 to 11 inches thick)
Btky2--41 to 55 inches; yellowish red (5YR 4/6) clay loam, reddish brown (5YR 4/3) moist; moderate medium subangular blocky structure; moderately hard, firm, moderately sticky and slightly plastic; common medium interstitial pores; many distinct clay films on faces of peds; strongly effervescent, secondary calcium carbonate segregated as common medium irregularly shaped soft masses (13 percent calcium carbonate equivalent); secondary gypsum segregated as common fine irregularly shaped filaments (17 percent gypsum); moderately alkaline (pH 8.4); clear smooth boundary. (3 to 11 inches thick)
Bky--55 to 72 inches; light brown (7.5YR 6/4) fine sandy loam, brown (7.5YR 5/4) moist; massive; moderately hard, firm, slightly sticky and slightly plastic; common medium interstitial pores; strongly effervescent, secondary calcium carbonate segregated as common medium irregularly shaped soft masses (15 percent calcium carbonate equivalent); secondary gypsum segregated as common medium irregularly shaped filaments (18 percent gypsum by weight); strongly alkaline (pH 8.6); abrupt smooth boundary. (5 to 25 inches thick)
By1--72 to 76 inches; pale olive (5Y 6/4) clay loam, olive (5Y 5/3) moist; massive; slightly hard, friable, nonsticky and nonplastic; common medium interstitial pores; violently effervescent (18 percent calcium carbonate equivalent), secondary gypsum segregated as common medium irregularly shaped soft masses and filaments(19 percent gypsum by weight); moderately alkaline (pH 8.4); clear wavy boundary. (0 to 25 inches thick)
By2--76 to 80 inches; pale olive (5Y 6/4) and yellowish red (5YR 5/6) clay loam, olive (5Y 5/3) and yellowish red (5YR 4/6) moist; massive; slightly hard, friable, nonsticky and nonplastic; many medium and many fine interstitial pores; violently effervescent (15 percent calcium carbonate equivalent); secondary gypsum segregated as few fine irregularly shaped soft masses and filaments (6 percent gypsum by weight); moderately alkaline (pH 8.4). (0 to 25 inches thick)
2BCy--80 to 98 inches; reddish yellow (7.5YR 6/6) loamy sand, strong brown (7.5YR 5/8) moist; single grain; loose, nonsticky and nonplastic; many medium and common fine interstitial pores; slightly effervescent (2 percent calcium carbonate equivalent); secondary gypsum segregated as few fine irregularly shaped filaments (1 percent gypsum by weight); moderately alkaline (pH 8.4).
TYPE LOCATION: Santa Fe County, New Mexico; about 7 miles southeast of Stanley; 2620 feet north and 950 feet west of the southeast corner of section 34, T.10N., R.9E.; USGS Longhorn Reservoir 7.5 minute topographic quadrangle; Latitude 35 degrees 02 minutes 52.9 seconds North and Longitude 105 degrees 57 minutes 51.8 seconds West, NAD 27.
RANGE IN CHARACTERISTICS:
Soil moisture - The soil moisture control section is intermittently moist in some part from July to October and December to March. It is assumed to be dry in all parts 50 to 75 percent of the time (cumulative), when the soil temperature at 20 inches is 41 degrees F. or higher. The soils are driest in May and June. The soil moisture regime is ustic aridic.
Soil temperature - 51 to 54 degrees F.
Depth to base of argillic horizon - 34 to 47 inches
Depth to calcareous material (as visible secondary calcium carbonates) - 8 to 22 inches
Depth to calcic horizon - 12 to 21 inches
Depth to gypsic horizon - 40 to 46 inches
Particle-size control section weighted averages-
Silicate clay content: 25 to 35 percent
Sand content: 30 to 45 percent
Fine sand or coarser content: 20 to 35 percent
Reaction - moderately alkaline to strongly alkaline throughout the profile
A horizon
Value: 4 or 5 dry, 3 or 4 moist
Chroma: 2 or 3, dry or moist
Bt horizon
Value: 4 or 5 dry, 3 or 4 moist
Chroma: 3 or 4 dry, 4 or 6 moist
Texture: clay loam, silty clay loam, silt loam
Btk horizons
Hue: 7.5YR or 5YR
Value: 6 or 7 dry, 4 or 5 moist
Chroma: 3 or 4, dry or moist
Texture: clay loam, silty clay loam, silt loam
Calcium carbonate equivalent: 15 to 25 percent
Btky horizons
Hue: 7.5YR or 5YR
Value: 5 or 6 dry, 4 or 5 moist
Chroma: 3 or 4 dry, 4 or 6 moist
Texture: clay loam, silty clay loam, silt loam
Calcium carbonate equivalent: 15 to 25 percent
Gypsum content: 4 to 15 percent
Bky horizon
Hue: 7.5YR or 5YR
Value: 5 or 6 dry, 4 or 5 moist
Chroma: 3 or 4, dry or moist
Texture: fine sandy loam or silt loam
Calcium carbonate equivalent: 15 to 25 percent
Gypsum content: 10 to 20 percent
By horizons
Hue: 5 YR, 7.5YR, 2.5Y, or 5Y
Value: 5 or 6 dry, 4 or 5 moist
Chroma: 4 or 6 dry, 3, 4, or 6 moist
Texture: clay loam, silty clay loam, silt loam
Calcium carbonate equivalent: 15 to 25 percent
Gypsum content: 10 to 20 percent
2BCy horizon
Value: 5 or 6 dry, 4or 5 moist
Chroma: 6 or 8, dry or moist
Texture: loamy sand or sandy loam
Rock fragments: 0 to 10 percent gravel
Calcium carbonate equivalent: 1 to 4 percent
Gypsum content: 1 to 5 percent
COMPETING SERIES: There are currently no competing series for this family.
GEOGRAPHIC SETTING: Trofes soils are on low stream terraces of basin floors. They formed in eolian, lacustrine, and alluvial material derived from mixed sources. Slopes are 0 to 2 percent. Elevation ranges from 6,200 to 6,900 feet. The mean annual precipitation is 12 to 14 inches with about 45 percent falling as rain from high-intensity convective thunderstorms between July and September. The mean annual air temperature is 49 to 51 degrees F. The frost-free period is 140 to 160 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Arojomil, Hyer, and Spyglass soils. Arojomil soils are moderately deep to a petrocalcic horizon, do not have secondary gypsum, and occur on summits of undulating plateaus. Hyer soils are fine-silty, do not have secondary gypsum, and occur on summits of undulating plains. Spyglass soils have gypsic horizons above forty inches and occur on floodplain steps of basin floors.
DRAINAGE AND PERMEABILITY: Well drained; medium surface runoff; permeability moderately slow
USE AND VEGETATION: Trofes soils are used for livestock grazing, wildlife habitat, and recreation. Present vegetation is blue grama, walkingstick cholla, and four-wing saltbush.
DISTRIBUTION AND EXTENT: Trofes soils are of small extent in the central part of the Estancia Basin in the Mexican Highland section of the Basin and Range physiographic province in northcentral to central New Mexico, MLRA 70C.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Phoenix, Arizona.
SERIES PROPOSED: Santa Fe County, New Mexico; Santa Fe Area Soil Survey Update; 2003. Trofes is a coined name.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - 0 to about 2 inches (A horizon)
Argillic horizon - 2 to about 55 inches (Bt, Btk1, Btk2, Btky1 and Btky2 horizons)
Calcic horizon - 9 to about 80 inches (Btk1, Btk2, Btky1, Btky2, Bky, By1 and By2 horizons)
Gypsic horizon - 41 to about 72 inches (Btky2, Bky, By1, and By2 horizons)
Classified according to Keys to Soil Taxonomy Tenth Edition, 2006.
ADDITIONAL DATA: The series type location has been sampled for full characterization by the Soil Survey Laboratory (SSL), Lincoln, NE, as soil survey sample number S-NM-02-049-006; calcium carbonate equivalence was determined using a field calcimeter.