LOCATION SOGZIE UT+AZ NMEstablished Series
TAXONOMIC CLASS: Coarse-loamy, mixed, superactive, mesic Typic Calciargids
TYPICAL PEDON: Sogzie loamy fine sand -- rangeland. (Colors are for dry soil unless otherwise noted.)
A-- 0 to 5 inches; reddish yellow (5YR 6/6) loamy fine sand, yellowish red (5YR 5/6) moist; weak very thick platy structure; soft, very friable, nonsticky and nonplastic; few fine roots; few fine pores; slightly effervescent; slightly alkaline (pH 7.5); clear wavy boundary. (3 to 10 inches thick)
Bt1-- 5 to 12 inches; yellowish red (5YR 5/6) very fine sandy loam, yellowish red (5YR 4/6) moist; weak medium subangular blocky structure; soft, very friable, slightly sticky and nonplastic; few medium and fine roots; common fine and very fine pores; few faint clay films on faces of peds and lining pores; slightly effervescent; moderately alkaline (pH 7.9); gradual wavy boundary. (5 to 9 inches thick)
Bt2-- 12 to 21 inches; yellowish red (5YR 5/6) fine sandy loam, yellowish red (5YR 4/6) moist; weak medium prismatic structure parting to weak medium subangular blocky; slightly hard, very friable, slightly sticky and nonplastic; few fine roots; few fine and very fine pores; few faint clay films on faces of peds and lining pores; strongly effervescent; moderately alkaline (pH 7.9); gradual wavy boundary. (7 to 11 inches thick)
Btk1-- 21 to 39 inches; yellowish red (5YR 5/6) fine sandy loam, yellowish red (5YR 4/6) moist; weak coarse prismatic structure parting to weak medium subangular blocky; hard, friable, slightly sticky and nonplastic; few fine roots; few medium and common fine and very fine pores; few faint clay films on faces of peds and lining pores; strongly effervescent, secondary calcium carbonates segregated as few fine irregularly shaped accumulations on faces of peds; moderately alkaline (pH 8.0); clear irregular boundary. (16 to 24 inches thick)
Btk2-- 39 to 70 inches; pink (5YR 7/3) very fine sandy loam, reddish brown (5YR 5/4) moist; weak medium subangular blocky structure; very hard, firm, slightly sticky and nonplastic; few fine roots; common fine and very fine pores; few faint clay films on faces of peds and lining pores; violently effervescent, secondary calcium carbonates segregated as common medium irregularly shaped accumulations on faces of peds; moderately alkaline (pH 8.1).
TYPE LOCATION: San Juan County, Utah; on the Navajo Indian Reservation about 3 miles south of White Mesa Village; 500 feet north and 2,000 feet east of the SW corner of section 33, T.42S., R.24E.
RANGE IN CHARACTERISTICS:
Soil moisture - The soil moisture control section is intermittently moist in some part from July to October and December to March. Driest during May and June. Typic aridic moisture regime.
Soil temperature - 54 to 58 degrees F.
Soil depth - 40 to greater than 60 inches to soft bedrock
Depth to base of argillic horizon - 28 to more than 60 inches
Depth to calcic horizon - 20 to 40 inches
Particle-size control section - clay content: 8 to 18 percent
Reaction - ranges from slightly alkaline in the surface to strongly alkaline in the subsoil and substratum
A horizon
Hue: 5YR, 7.5YR
Value: 5 or 6 dry, 4 or 5 moist
Chroma: 4 through 6, dry or moist
Organic carbon content: 0.12 to 0.41 percent
Other features: some pedons have subsurface horizons (AB or BA) of loamy fine sand up to 10 inches thick
Bt and Btk horizons
Hue: 5YR, 7.5YR
Value: 5 through 8 dry, 4 through 6 moist
Chroma: 3 through 6, dry or moist
Texture: very fine sandy loam or fine sandy loam
Organic carbon content: 0.12 to 0.35 percent
Calcium carbonate equivalent: 5 to 25 percent
Bk or 2BCk horizon (when present)
Hue: 5YR, 7.5YR, 10YR
Value: 6 through 8 dry, 4 through 7 moist
Chroma: 2 through 6, dry or moist
Texture: loam, fine sandy loam, loamy fine sand, loamy sand
Organic carbon content: 0.12 to 0.23 percent
Calcium carbonate equivalent: 5 to 15 percent
Other features: 0 to 20 percent gravel or soft sandstone fragments
COMPETING SERIES: There are no competitors.
GEOGRAPHIC SETTING: Sogzie soils are on summits of mesas, undulating plateaus, fan terraces, and dipslopes of cuestas. They formed in eolian material, alluvium and residuum derived from sandstone and siltstone. Slopes range from 1 to 8 percent. Elevation ranges from 4,600 to 6,200 feet. The mean annual precipitation is 6 to 10 inches with 35 to 60 percent falling as rain from high-intensity thunderstorms between July and September. The mean annual air temperature is 52 to 56 degrees F. The average frost-free period is 130 to 160 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Aneth, Sheppard, and Whit soils. Aneth soils are sandy, contain buried loamy horizons, and occur on adjacent eolian-mantled surfaces. Sheppard soils are sandy and occur on stable dunes. Whit soils are fine-silty and occur on adjacent undulating plateaus.
DRAINAGE AND PERMEABILITY: Well drained; slow runoff; moderate or moderately rapid permeability
USE AND VEGETATION: Sogzie soils are used for livestock grazing. Present vegetation is Indian ricegrass, sand dropseed, galleta, needleandthread, fourwing saltbush, and Cutler Mormon tea.
DISTRIBUTION AND EXTENT: Sogzie soils are on the Colorado Plateau province in southeast Utah, northeast Arizona, and northwest New Mexico. MLRA 35; LRR-D. These soils are moderately extensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Phoenix, Arizona
SERIES ESTABLISHED: Soil Survey of Navajo Indian Reservation, San Juan County, Utah, 1972.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - The zone from 0 to 5 inches. (A horizon)
Argillic horizon - The zone from 5 to about 70 inches. (Bt1, Bt2, Btk1, and 2Btk2 horizons)
Calcic horizon - The zone from 39 to about 70 inches. (2Btk2 horizon)
Classified according to Soil Taxonomy, Second Edition, 1999; Keys to Soil Taxonomy, Tenth Edition, 2006.
ADDITIONAL DATA: Reference samples were taken at series type location and analyzed for particle-size, organic matter, and calcium carbonate equivalence at the BIA soils lab in Gallup, NM as sample S88NM-045-3. Calcium carbonate equivalence on other pedons was determined with a field volume calcimeter. Lab results confirm the presence of a silicate clay bulge. Percent of size fraction larger than very fine sand is also greater than 15 percent as determined by the lab analyses and also wet sieve analysis.
Updated and revised for the correlation of Ft. Defiance Area AZ715 2/08 DWD