LOCATION ANNAROSE TX

Established Series
PDH-JDN-CKH
02/2018

ANNAROSE SERIES

The Annarose series consists of soils that are deep to weakly consolidated sandstone. These well drained soils formed in calcareous sandy and loamy residuum derived from the Oakville Sandstone and Fleming Formation of the Tertiary Period. These gently and moderately sloping soils are on summits and shoulders of broad interfluves. Slopes range from 2 to 8 percent. Mean annual temperature is 22 degrees C (72 degrees F) and mean annual precipitation is about 610 mm (24 in).

TAXONOMIC CLASS: Coarse-loamy, mixed, superactive, hyperthermic Aridic Calciustepts

TYPICAL PEDON: Annarose fine sandy loam, on a east facing, convex, 3 percent slope in rangeland; elevation is 120 meters (390 feet). (Colors are for dry soil unless otherwise stated.)

A--0 to 23 cm (0 to 9 in); pale brown (10YR 6/3) fine sandy loam, brown (10YR 5/3) moist; weak fine and medium subangular blocky structure; 80 percent of surface has massive crust about 1/4 inch thick with 5 percent cover of lichen growth; hard, friable; common fine and few medium and coarse roots; common fine and few medium tubular pores; few snail shell fragments; common worm casts; violently effervescent; moderately alkaline; clear smooth boundary. (thickness of A horizon ranges from 8 to 51 cm [3 to 20 in])

Bw1--23 to 41 cm (9 to 16 in); light yellowish brown (10YR 6/4) sandy clay loam, yellowish brown (10YR 5/4) moist; weak medium prismatic structure parting to weak fine and medium subangular blocky; hard, friable; common medium roots; common very fine, fine, and medium tubular pores; few snail shell fragments; few rounded chert fragments; few films and threads of calcium carbonate; common worm casts; violently effervescent; moderately alkaline; clear smooth boundary.

Bw2--41 to 64 cm (16 to 25 in); light yellowish brown (10YR 6/4) sandy clay loam, yellowish brown (10YR 5/4) moist; weak medium prismatic structure parting to weak fine and medium subangular blocky; hard, friable; few fine and medium roots; common very fine and fine, and few medium and coarse tubular pores; few rounded weakly cemented chalk fragments and few rounded chert fragments; few fine threads of calcium carbonate; few worm casts; violently effervescent; moderately alkaline; clear wavy boundary. (combined thickness of the Bw horizons range from 0 to 51 cm [0 to 20 in])

Bk1--64 to 89 cm (25 to 35 in); very pale brown (10YR 7/3) sandy clay loam, light yellowish brown (10YR 6/4) moist; weak medium prismatic structure parting to weak fine and medium subangular blocky; hard, friable; few fine and medium roots; many very fine and fine, and common medium tubular pores; few worm casts; few rounded weakly cemented chalk fragments and few rounded chert fragments; 10 percent coatings, threads, concretions and masses of calcium carbonate; violently effervescent; moderately alkaline; clear wavy boundary.

Bk2--89 to 109 cm (35 to 43 in); very pale brown (10YR 7/3) fine sandy loam, light yellowish brown (10YR 6/4) moist; weak medium and coarse prismatic structure parting to weak medium subangular blocky; hard, firm; few fine and medium roots; many very fine and fine, and common medium tubular pores; few worm casts; common rounded weakly cemented chalk fragments; 15 percent coatings, threads, concretions and masses of calcium carbonate; violently effervescent; moderately alkaline; clear wavy boundary. (combined thickness of the Bk horizons range from 20 to 102 cm [8 to 40 in])

BCk--109 to 127 cm (43 to 50 in); very pale brown (10YR 7/3) and very pale brown (10YR 8/2) fine sandy loam, light yellowish brown (10YR 6/4) and light gray (10YR 7/2) moist; weak medium and coarse prismatic structure parting to weak medium subangular blocky; slightly hard, very friable; common fine and few medium and coarse roots; common fine and few medium tubular pores; common worm casts; 10 percent coatings, threads, masses and concretions of calcium carbonate; violently effervescent; moderately alkaline; gradual wavy boundary.(thickness of the BCk horizons range from 10 to 66 cm [4 to 26 in])

Cdk1--127 to 175 cm (50 to 69 in); very pale brown (10YR 8/2) weakly consolidated sandstone, and about 10 percent very pale brown (10YR 7/3) fine sandy loam; light gray (10YR 7/2), and light yellowish brown (10YR 6/4) moist; massive; hard, firm; few very fine and fine roots in fractures; common very fine and fine tubular pores; fractures are spaced 5 to 15 inches apart; 8 percent by volume threads and masses of calcium carbonate; 80 percent of matrix is violently effervescent with 20 percent noneffervescent; moderately alkaline; gradual wavy boundary.

Cdk2--175 to 203 (69 to 80 in); very pale brown (10YR 8/2) weakly consolidated sandstone, and about 10 percent very pale brown (10YR 7/3) fine sandy loam along fractures; light gray (10YR 7/2), and light yellowish brown (10YR 6/4) moist; massive; hard, firm; few very fine and fine roots in fractures; common very fine and fine tubular pores; fractures are spaced 10 to 20 inches apart; 5 percent by volume threads and masses of calcium carbonate; 60 percent of matrix is violently effervescent with 40 percent noneffervescent; moderately alkaline.

TYPE LOCATION: Live Oak County, Texas; from the intersection of U.S. Highway 59 and U.S. Highway 281 in George West; 2.4 miles north on U.S. Highway 281; 12.6 miles southwest on Farm Road 889; 0.4 mile southeast on private road, and 100 feet east in rangeland. Clegg NE, Texas USGS topographic quadrangle; Latitude: 28 degrees, 12 minutes, 42 seconds N; Longitude: 98 degrees, 17 minutes, 32 seconds W.; NAD 83.

RANGE IN CHARACTERISTICS:

Soil Moisture: An aridic-ustic moisture regime. The soil moisture control section is dry in some or all parts for more than 90 days but less than 180 cumulative days in normal years.
Mean annual soil temperature: 22 to 23 degrees C (72 to 74 degrees F)

Particle-size control section (weighet average)
Clay content: 12 to 18

A horizon
Hue: 10YR
Value: 4 to 6
Chroma: 2 to 3
Texture: fine sandy loam
Clay content: 15 to 25 percent
Calcium carbonate equivalent: 10 to 25 percent
Effervescense: slightly effervescence to strongly effervescent
Reaction: slightly alkaline to moderately alkaline

Bw horizon
Hue: 10YR
Value: 4 to 6
Chroma: 2 to 4
Texture: fine sandy loam, loam or sandy clay loam
Clay content: 15 to 25 percent
Coarse fragments: 0 to 3 percent, nonflat, rounded, indurated chert
Calcium carbonate equivalent: 20 to 35 percent
Effervescence: slightly effervescence to strongly effervescent
Reaction: slightly alkaline to moderately alkaline

Bk Horizon
Hue: 10YR
Value: 5 to 7
Chroma: 3 to 4
Texture: fine sandy loam, loam or sandy clay loam
Clay content: 10 to 25 percent
Coarse fragments: 0 to 3 percent, nonflat, rounded, indurated chert
Calcium carbonate equivalent: 20 to 35 percent
Effervescence: Slightly effervescent to violently effervescent
Reaction: slightly alkaline to moderately alkaline

BCk horizon (where present)
Hue: 10YR
Value: 7 to 8
Chroma: 2 or 3
Texture: fine sandy loam or sandy clay loam
Clay content: 15 to 25 percent
Calcium carbonate equivalent: 20 to 35 percent
Effervescence: strongly effervescent to violently effervescent
Reaction: slightly alkaline to moderately alkaline

Cdk horizon
Hue: 10YR
Value: 7 to 8
Chroma: 2 to 3
Texture: weakly consolidated noncemented sandstone that slakes in water within one hour that has
loamy fine sand or fine sandy loam texture
Clay content: 8 to 20 percent
Calcium carbonate equivalent: 15 to 30 percent
Effervescence: strongly effervescent to violently effervescent
Reaction: slightly alkaline to moderately alkaline

COMPETING SERIES: There are no other series in the same family. Similar soils are the Atco (TX), Bookout (TX), Colibro (TX), McAllen (TX), Sabenyo (TX) and Saspamco (TX) series.
Colibro, McAllen, and Sabenyo soils: fine-loamy control sections.
McAllen soils: are saline throughout.
Bookout soils: have a fine-silty control section.
Colibro and Saspamco soils: are moist in the moisture control section for longer periods of time. Atco and Sabenyo soils: have carbonatic mineralogy.

GEOGRAPHIC SETTING:
Parent Material: Coarse-loamy material derived from weakly consolidated sandstone of the Oakville Sandstone and Fleming Formations of the Tertiary Period.
Landscape: inland dissected coastal plains
Landforms: summits and shoulders of broad interfluves and ridges.
Slope: 2 to 8 percent.
Mean annual precipitation: 56 to 71 cm (22 to 28 in)
Precipitation pattern: These soils are intermittently moist in September through November and March through May. June through August and December through February are the driest months.
Thornthwaite annual P-E indices: 26 to 40
Mean annual temperature: 21 to 24 degrees C (70 to 74 degrees F)
Frost free days: 275 to 320 days
Elevation: 75 to 200 meters (250 to 650 feet)

GEOGRAPHICALLY ASSOCIATED SOILS: These include the Pernitas (TX), Pharr (TX), and Weesatche (TX) series.
Pernitas, Pharr, and Weesatche soils are on lower positions and
have mollic epipedons.
Pernitas and Weesatche soils have an argillic horizon.

DRAINAGE AND PERMEABILITY: The soil is well drained. Permeability is
moderate. Runoff is very low on slopes less than 3 percent, low on slopes of 3
to 5 percent, and medium on slopes of 5 to 8 percent.

USE AND VEGETATION: Used mainly for rangeland and wildlife habitat. Some areas
are used for cropland. Native grasses are twoflower and fourflower trichloris,
pink pappusgrass, plains bristlegrass, hooded windmillgrass and lovegrass
tridens. Woody plants include guajillo, mountain laurel, paloverde, mesquite,
and agarita.

DISTRIBUTION AND EXTENT: In the northeastern part of the Central Rio Grande
Plain; LRR I; MLRA 83C; moderate extent.

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Temple, Texas

SERIES ESTABLISHED: Live Oak County, Texas; 1997.

REMARKS: These soils were formerly included with the Colibro series.

Added clay content, coarse fragments, and calcium carbonate equivalent to RIC (RFG 11/2013)

Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon: 0 to 23 cm (0 to 9 in). (A horizon)
Cambic horizon: 23 to 64 cm (9 to 25 in). (Bw1, Bw2 horizons)
Calcic horizon: 64 to 127 cm (25 to 50 in). (Bk1, Bk2, BCk horizons)
Densic material: 127 to 203 cm (50 to 80 in). (Cdk horizons)

ADDITIONAL DATA: NSSL data from Live Oak County (S91TX-297-003)

Taxonomic version: Keys to Soil Taxonomy, Eleventh Edition, 2010.

National Cooperative Soil Survey
U.S.A.