LOCATION GINLAND AZEstablished Series
TAXONOMIC CLASS: Clayey over loamy, smectitic over mixed, superactive, calcareous, hyperthermic Vertic Torrifluvents
TYPICAL PEDON: Ginland clay - cultivated. (Colors are for dry soil unless otherwise noted.)
Ap--0 to 13 inches; brown (7.5YR 5/4) clay, brown (7.5YR 4/4) moist; massive; hard, very firm, sticky and plastic; many very fine and fine roots; few very fine and fine tubular pores; strongly effervescent; moderately alkaline (pH 8.2); abrupt smooth boundary. (10 to 14 inches thick)
A--13 to 24 inches; brown (7.5YR 5/4) clay, brown (7.5YR 4/4) moist; weak fine subangular blocky structure; hard, very firm, sticky and very plastic; many fine roots; common and fine tubular pores; few calcium carbonate filaments; strongly effervescent; moderately alkaline (pH 8.2); abrupt smooth boundary. (10 to 22 inches thick)
2Btkb1--24 to 35 inches; strong brown (7.5YR 5/6) sandy clay loam, strong brown (7.5YR 5/8) moist; weak fine subangular blocky structure; slightly hard, very friable, slightly sticky and slightly plastic; common very fine and fine roots; many very fine and fine tubular pores; few faint clay bridges; common fine irregular calcium carbonate masses; strongly effervescent; moderately alkaline (pH 8.4); clear wavy boundary. (10 to 12 inches thick)
2Btkb2--35 to 56 inches; reddish yellow (7.5YR 6/8) sandy clay loam, strong brown (7.5YR 5/6) moist; weak fine subangular blocky structure; slightly hard, very friable, slightly sticky and slightly plastic; common very fine and fine roots; common very fine and fine tubular pores; few fain clay bridges; common fine irregular calcium carbonate masses; moderately alkaline (pH 8.0); gradual wavy boundary. (15 to 24 inches thick)
2Btk3--56 to 60 inches; reddish yellow (7.5YR 6/6) sandy clay loam, strong brown (7.5YR 5/6) moist; weak fine subangular blocky structure; slightly hard, very friable, sticky and plastic; few very fine and fine roots; common very fine and fine tubular pores; few faint clay bridges; common fine irregular calcium carbonate masses; violently effervescent; moderately alkaline (pH 8.2).
TYPE LOCATION: 1500 feet south and 500 feet east of the northwest corner of section 36, T. 6 S., R. 6 E.
RANGE IN CHARACTERISTICS:
Soil moisture - Intermittently moist in some part of the soil moisture control section during July-August and December-January. Driest during May and June. Typic aridic soil moisture regime.
Soil temperature - 72 to 78 degrees F.
Rock fragments - 0 to 5 percent; less than .5 inch diameter
Depth to contrasting material - 20 to 39 inches
Reaction - Slightly alkaline to strongly alkaline
Soil Cracking - Cracks are 1 cm or more wide at 20 inches for extended periods each year
Shrink-swell - COLE of 0.05 or more in the upper 20 to 39 inches
Calcium carbonate equivalent - 5 to 15 percent
A or C horizon
Hue: 10YR, 7.5YR
Value: 4 through 6 dry, 2 through 4 moist
Chroma: 2 through 4, dry or moist
Texture: Clay, silty clay (40 to 55 percent clay)
2B horizon
Hue: 10YR, 7.5YR, 5YR
Value: 4 through 6 dry, 2 through 5 moist
Chroma: 2 through 8, dry or moist
Texture: Clay loam, sandy clay loam, loam (20 to 30 percent clay)
COMPETING SERIES: There are no competing series.
GEOGRAPHIC SETTING: Ginland soils are on flood plains and have slopes of 0 to 1 percent. They formed in stratified stream alluvium from granite, schist, rhyolite and basic igneous rocks. Elevations are 500 to 2000 feet. Mean annual precipitation is 4 to 10 inches. Mean annual air temperature is 70 to 75 degrees F. Frost-free period is about 250 to 350 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Cashion, Gadsden and Glenbar soils. Gadsden and Glenbar soils do not have a strongly contrasting particle-size class and buried B horizons. Glenbar soils also average less than 35 percent clay in the particle-size control section. Cashion soils do not have buried B horizons.
DRAINAGE AND PERMEABILITY: Well drained; slow runoff; slow permeability.
USE AND VEGETATION: Used mainly for growing irrigated cotton and small grains.
DISTRIBUTION AND EXTENT: Southern Arizona. These soils are not extensive. MLRA is 40.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Phoenix, Arizona
SERIES ESTABLISHED: Pinal County, Arizona, Western Part; 1984.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Contrasting material - 20 to 39 inches of Holocene alluvium overlying a Pleistocene age buried soil that has an argillic horizon.
Entisol feature - The absence of diagnostic subsurface horizons
Vertic subgroup - COLE of 0.05 or more and cracks each year