LOCATION ANGORA NE

Established Series
Rev. DWJ, DJB, JWW
11/2020

ANGORA SERIES

The Angora series consists of deep, well drained, moderately permeable soils that formed in loess. These soils are on ridges and side slopes of dissected uplands. Slopes range from 1 to 20 percent. Mean annual precipitation is about 406 mm (16 inches) and mean annual air temperature is about 9 degrees C (49 degrees F) at the type location.
TAXONOMIC CLASS: Coarse-silty, mixed, superactive, mesic Aridic Haplustepts

TYPICAL PEDON: Angora very fine sandy loam - on a convex summit of an upland interfluve with a 2 percent south-facing slope; in native grass. When described, the soil was dry throughout. (Colors are for dry soil unless otherwise stated.)

A--0 to 13 cm (0 to 5 inches); brown (10YR 5/3) very fine sandy loam, brown (10YR 4/3) moist; weak fine and very fine granular structure; soft, very friable; neutral; clear smooth boundary. (8 to 15 cm (3 to 6 inches) thick)

Bw1--13 to 20 cm (5 to 8 inches); grayish brown (10YR 5/2) very fine sandy loam, dark grayish brown (10YR 4/2) moist; weak coarse prismatic structure parting to weak very fine granular; soft, very friable; neutral; clear smooth boundary.

Bw2--20 to 28 cm (8 to 11 inches); brown (10YR 5/3) very fine sandy loam, brown (10YR 4/3) moist; weak coarse prismatic structure parting to weak very fine granular; soft, very friable; neutral; clear smooth boundary. (Combined thickness of the Bw horizon is 10 to 23 cm (4 to 9 inches))

BC--28 to 41 cm (11 to 16 inches); pale brown (10YR 6/3) very fine sandy loam, brown (10YR 5/3) moist; weak coarse prismatic structure; soft, very friable; lacework pattern of calcium carbonate threads 1 millimeter wide; strong effervescence; slightly alkaline; clear smooth boundary. (0 to 13 cm (0 to 5 inches) thick)

Ck--41 to 61 cm (16 to 24 inches); very pale brown (10YR 7/3) and light gray (2.5Y 7/2) very fine sandy loam, brown (10YR 5/3) and light brownish gray (2.5Y 6/2) moist; massive; slightly hard; friable; irregular pattern of calcium carbonate accumulations; violent effervescence; moderately alkaline; gradual smooth boundary. (0 to 23 cm (0 to 9 inches) thick)

C--61 to 152 cm (24 to 60 inches); very pale brown (10YR 7/3) very fine sandy loam, brown (10YR 5/3) moist; massive; soft; violent effervescence; moderately alkaline.

TYPE LOCATION: Morrill County, Nebraska; about 16 km (10 miles) north of Bayard; 777 m (2,550 ft) north and 259 m (850 ft) east of the southwest corner of section 11, T. 22 N., R. 52 W.

RANGE IN CHARACTERISTICS:
The solum typically is 28 to 41 cm (11 to 16 inches) thick with a full range of 28 to 51 cm (11 to 20 inches).
Depth to free carbonates is most commonly 13 to 36 cm (5 to 14 inches), with a full range of 13 to 51 cm (5 to 20 inches). Either the organic carbon content is less than 0.6 percent or the epipedon is less than 18 cm (7 inches). A few sandstone pebbles are in some pedons.

A horizon:
Hue: 10YR
Value: 4 through 6 dry and 3 or 4 moist
Chroma: 2 or 3 (dry or moist)
Reaction: Neutral, slightly alkaline, or moderately alkaline

C horizon:
Hue: 10YR or 2.5Y
Value: 6 through 8 dry and 5 or 6 moist
Chroma: 2 or 3 (dry or moist)
Reaction: Slightly or moderately alkaline.

The Ck horizon is typically present, but this horizon is not present in all pedons.

COMPETING SERIES: There are no other series in the same family. Competing series in other families are the Bridget, Creighton, Gates, Keota, Mitchell, and Oglala series. Bridget soils have a mollic epipedon and do not have a cambic horizon. Creighton soils are coarse-loamy, have a mollic epipedon and a thicker solum. Gates soils occur in a moister climate, contain less than 0.3 percent organic carbon content and do not have a cambic horizon. Keota soils have a paralithic contact at depths of 20 to 40 inches, are calcareous throughout and do not have a cambic horizon. Mitchell soils are calcareous throughout and do not have a cambic horizon. Oglala soils typically do not have a B horizon, have carbonates at a lower depth, and have soft bedrock at a depth of 40 to 60 inches.

GEOGRAPHIC SETTING: Angora soils are on ridges, interfluves, and side slopes of dissected uplands. Slopes are convex and range from 1 to 20 percent. The soils formed in very fine sandy loam calcareous loess. The range of mean annual precipitation is 14 to 18 inches. The range of mean annual air temperature is 47 to 51 degrees F.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Busher, Canyon, and Tassel soils. Busher soils are coarse-loamy, have a mollic epipedon, a thicker solum and are on similar landscapes and on side slopes at lower parts of the landscape. Canyon soils are shallow to soft bedrock and are on lower parts of the landscape. Tassel soils have a paralithic contact at depths of 10 to 20 inches, are calcareous throughout and are on side slopes at lower parts of the landscape.

DRAINAGE AND PERMEABILITY: Well drained. Runoff is medium or rapid. Permeability is moderate.

USE AND VEGETATION: Most of the acreage is in native grasses. Much of the acreage with slopes less than 6 percent is cultivated dryland. The dominant native species in rangeland are threadleaf sedge, blue grama, and needleandthread. The main cultivated crop is winter wheat grown on summer fallowed land.

DISTRIBUTION AND EXTENT: Western Nebraska; possibly eastern Wyoming. The Angora series is not extensive.

SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Salina, Kansas.

SERIES ESTABLISHED: Morrill County, Nebraska, October 1981.

REMARKS: The fine sand and coarser separate (diameter between 0.1 mm and 2.0 mm) totals about 15 percent. The particle-size class of coarse-silty is provisional. Where this soil is in native grass, the diagnostic horizons are evident. Where cultivated, the plow layer generally includes both the surface layer and most of the subsoil and the genetic horizons are not so easy to discern.
Diagnostic horizons and features recognized in this pedon are: ochric epipedon--the zone from 0 to 13 centimeters (0 to 5 inches) (A horizon); cambic horizon--the zone from 13 to 41 centimeters (5 to 16 inches) (Bw and BC horizons).

Angora soils were previously included in the Jayem, Creighton, and Oglala series.

ADDITIONAL DATA: One pedon is in the KSSL database; Lab pedon id 78NE123005.
11/2020 Changed Taxonomic Class from obsolete Coarse-silty, mixed, mesic Aridic Ustochrepts to Coarse-silty, mixed, superactive, mesic Aridic Haplustepts per Keys to Soil Taxonomy, Twelfth Edition, 2014. Cation-Exchange Activity Class was added based on KSSL pedon data (lab pedon id 78NE123005).
11/2020 Added diagnostic horizons and features to OSD.

National Cooperative Soil Survey
U.S.A.