LOCATION WINGROCK NMEstablished Series
TAXONOMIC CLASS: Coarse-loamy, mixed, active, mesic Typic Haplocalcids
TYPICAL PEDON: Wingrock gravelly loamy sand - on a plane to slightly convex fan terrace surface sloping 8 percent to the east at 5,520 feet elevation - rangeland. (Colors are for dry soil unless otherwise noted. When described, the pedon was dry throughout.)
A--0 to 5 inches; brown (10YR 5/3) gravelly loamy sand, brown (10YR 4/3) moist; weak medium platy and weak fine granular structure; soft, very friable, nonsticky and nonplastic; few very fine roots; few very fine irregularly shaped pores; 20 percent gravel; strongly effervescent; moderately alkaline (pH 8.2); clear smooth boundary. (4 to 6 inches thick)
2Bw--5 to 12 inches; brown (10YR 5/3) sandy loam, brown (10YR 4/3) moist; moderate coarse subangular blocky structure; slightly hard, friable, slightly sticky and nonplastic; common fine and very fine roots; common very fine irregularly shaped pores; 10 percent gravel; strongly effervescent; strongly alkaline (pH 8.6); clear wavy boundary. (6 to 10 inches thick)
2Bk1--12 to 26 inches; brown (10YR 5/3) coarse sandy loam, brown (10YR 4/3) moist; moderate coarse subangular blocky structure; soft, very friable, slightly sticky and nonplastic; common fine and very fine roots; common very fine irregularly shaped pores; 10 percent gravel; strongly effervescent, secondary calcium carbonates segregated in few fine irregularly shaped accumulations on faces of peds and rock fragments; strongly alkaline (pH 8.8); clear wavy boundary. (9 to 15 inches thick)
2Bk2--26 to 36 inches; pale brown (10YR 6/3) gravelly loamy coarse sand, brown (10YR 4/3) moist; weak coarse subangular blocky structure; soft, very friable, nonsticky and nonplastic; few fine and very fine roots; few fine irregularly shaped pores; 15 percent gravel; strongly effervescent, secondary calcium carbonates segregated in few fine irregularly shaped accumulations on faces of peds and rock fragments; strongly alkaline (pH 9.0); clear smooth boundary. (10 to 13 inches thick)
3BCk1--36 to 53 inches; pale brown (10YR 6/3) sandy loam, brown (10YR 5/3) moist; moderate medium subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; few fine and common very fine roots; common very fine tubular pores; 5 percent gravel; strongly effervescent, secondary calcium carbonates segregated in few fine irregularly shaped accumulations on rock fragments; strongly alkaline (pH 9.0); gradual smooth boundary. (10 to 17 inches thick)
3BCk2--53 to 60 inches; pale brown (10YR 6/3) sandy loam, yellowish brown (10YR 5/4) moist; weak medium subangular blocky structure; slightly hard, friable, slightly sticky and nonplastic; few fine and very fine roots; common very fine tubular pores; 5 percent gravel; strongly effervescent, secondary calcium carbonates segregated in few fine irregularly shaped accumulations on rock fragments; strongly alkaline (pH 8.8).
TYPE LOCATION: San Juan County, New Mexico; on the Navajo Indian Reservation about 11 miles southwest of Shiprock, New Mexico and .25 mile east of the Ship Rock diatreme; 1,000 feet south and 300 feet west of the northeast corner, sec. 34, T.29 N., R.19 W.
RANGE IN CHARACTERISTICS:
Soil moisture - typically, the SMCS is intermittently moist in some part from July to October and December to March. The winter moisture peak is not as high as the summer peak. Typic aridic moisture regime.
Soil temperature - 54 to 57 degrees F.
Particle-size control section - clay content: 8 to 15 percent, by weighted average
Reaction - moderately to strongly alkaline
Calcium carbonate equivalence - 5 to 10 percent
Rock fragments are tuff-breccia or similar volcanic rocks
Other features: some pedons have soft sedimentary bedrock between 40 and 60 inches.
A horizon -
Value: 5 or 6 dry
Salinity, mmhos/cm: less than 2
Sodicity, SAR: less than 5
Rock fragments: 15 to 30 percent gravel
Bw horizon -
Value: 5 or 6 dry, 4 or 5 moist
Chroma: 3 or 4
Texture: sandy loam or coarse sandy loam
Salinity, mmhos/cm: 2 to 4
Sodicity, SAR: less than 5
Rock fragments: 5 to 15 percent gravel
Bk horizons -
Value: 5 or 6 dry, 4 or 5 moist
Chroma: 3 or 4
Texture: stratified coarse sandy loam, gravelly coarse sandy loam, and gravelly loamy coarse sand
Salinity, mmhos/cm: 2 to 4
Sodicity, SAR: less than 5
Rock fragments: 10 to 25 percent gravel
BCk horizons -
Hue: 7.5YR or 10YR
Value: 5 or 6 dry, 4 or 5 moist
Chroma: 3 or 4
Texture: sandy loam or fine sandy loam
Salinity, mmhos/cm: 4 to 8
Sodicity, SAR: 5 to 13
Rock fragments: 0 to 10 percent gravel
Other features: some pedons have texture of sandy clay loam or loamy sand; some pedons have trace amounts of secondary gypsum or SAR between 13 and 30.
COMPETING SERIES: There are no competing series.
GEOGRAPHIC SETTING: Wingrock soils are on low fan terraces below volcanic necks and associated dikes. They formed in fan alluvium derived dominantly from tuff-breccia and similar volcanic rocks with additions of local sandstone. Slopes are 4 to 15 percent. Elevation ranges from 5,200 to 6,000 feet. The mean annual precipitation is 5 to 8 inches with 35 to 60 percent falling as rain from high intensity thunderstorms between July and October. The mean annual temperature is 51 to 54 degrees F. The average frost-free period is 140 to 160 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Farb, Fordbutte(T), Huerfano, Kimbeto(T), Persayo, Tocito(T), and Tsebitai(T) soils. Farb soils are shallow to sandstone on adjacent cuestas. Fordbutte and Persayo soils are moderately deep and shallow, respectively, to siltstone bedrock on surrounding areas. Huerfano soils are shallow to shale and sodium affected. Kimbeto soils are fine-loamy and have natric and calcic horizons. Tocito soils are fine-silty and undeveloped on low stream terraces. Tsebitai soils are coarse-silty and occur on fan terraces below outcrops of siltstone.
DRAINAGE AND PERMEABILITY: Well drained; medium runoff; moderately rapid permeability.
USE AND VEGETATION: Wingrock soils are used for livestock grazing. Present vegetation is alkali sacaton, Indian ricegrass, galleta, shadscale, and Russian thistle.
DISTRIBUTION AND EXTENT: Wingrock soils are of small extent on the Four Corners platform portion of the Colorado Plateau in northwest New Mexico. MLRA 35.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Phoenix, Arizona
SERIES ESTABLISHED: Western San Juan County, New Mexico; Shiprock Area Soil Survey, 1993. Wingrock is a coined name.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - The zone from the soil surface to a depth of about 5 inches (A horizon).
Cambic horizon - The zone from 5 to about 12 inches (2Bw horizon).
Particle-size control section - The zone from 10 to about 40 inches (2Bw, 2Bk1, 2Bk2, and 3BCk1 horizons).
Classified according to Soil Taxonomy Second Edition, 1999; Keys to Soil Taxonomy Tenth Edition, 2006.
ADDITIONAL DATA: SAR values are estimated. Salinity values were determined on three pedons, including the type location, with a Wheatstone bridge. Calcium carbonate equivalence determined with a field volume calcimeter.
Soil and Range Inventory Report of District 12; USDI.,BIA, Shiprock Agency, 1978. Soil profile # 4550-1 is within the range of this series.