LOCATION CRANFILL                TX

Established Series
Rev. CLN:GLL
04/2022

CRANFILL SERIES


The Cranfill series consists of very deep, well drained, moderately permeable soils that formed in loamy calcareous colluvial sediments containing limestone gravel. These soils are on foot slopes of ridges on hills. Slopes are dominantly 3 to 8 percent but range from 3 to 20 percent. Mean annual precipitation is about 864 mm (34 in), and mean annual air temperature is about 18.3 degrees C (65 degrees F).

TAXONOMIC CLASS: Fine-loamy, carbonatic, thermic Udic Haplustepts

TYPICAL PEDON: Cranfill gravelly clay loam--rangeland. (Colors are for dry soil unless otherwise stated.)

A--0 to 25 cm(0 to 10 in); grayish brown (10YR 5/2) gravelly clay loam, dark grayish brown (10YR 4/2) moist; moderate fine granular structure; hard, friable; few fine pores; common fine roots; common films, threads, and concretions of calcium carbonate; 20 percent by volume of limestone fragments from 2 mm to 2.5 cm in diameter; about 80 percent calcium carbonate equivalent; violently effervescent; moderately alkaline, gradual smooth boundary. (Thickness is 20 to 38 cm [8 to 15 in])

Bk1--25 to 56 cm(10 to 22 in); very pale brown (10YR 7/4) gravelly clay loam, light yellowish brown (10YR 6/4) moist; moderate medium granular and weak medium subangular blocky structure; hard, friable; few fine roots; few fine pores; many films, threads, and concretions of calcium carbonate; 26 percent by volume of limestone fragments from 2 mm to 4 cm in diameter; about 90 percent calcium carbonate equivalent; violently effervescent; moderately alkaline; gradual smooth boundary. (Thickness is 25 to 58 cm [10 to 23 in])

Bk2--56 to 137 cm(22 to 54 in); light yellowish brown (10YR 6/4) gravelly clay loam, yellowish brown (10YR 5/4) moist; moderate medium granular and moderate medium subangular blocky structure; hard, friable; few fine roots; few fine pores; many films, threads, and concretions of calcium carbonate; 31 percent by volume of limestone fragments from 2 mm to 4 cm in diameter; about 90 percent calcium carbonate equivalent; violently effervescent; moderately alkaline; gradual smooth boundary. (Thickness is 56 to 86 cm [22 to 34 in])

BCk--137 to 203 cm (54 to 80 in); very pale brown (10YR 7/4) gravelly clay loam, light yellowish brown (10YR 6/4) moist; weak fine subangular blocky structure; hard, friable; many films, threads, and concretions of calcium carbonate; 20 percent by volume of limestone fragments from 2 mm to 4 cm in diameter; about 90 percent calcium carbonate equivalent; violently effervescent; moderately alkaline.

TYPE LOCATION: Bosque County, Texas;
Typical pedon of Cranfill gravelly clay loam, 3 to 5 percent slopes; from the intersection of Texas Highway 6 and Texas Highway 22 in Meridian, 6.3 miles south on Texas Highway 6; 600 feet west in a native grass pasture. USGS topographic quadrangle: Clifton, TX:
Latitude: 31 degrees, 50 minutes, 32.62 seconds, N;
Longitude: 97 degrees, 37 minutes, 22.67 seconds, W;
Datum: WGS84.
UTM Easting 630164.65 m, UTM Northing 3523790.98m; UTM Zone 14.

RANGE IN CHARACTERISTICS:
Soil Moisture: udic ustic soil moisture regime.
Solum thickness: 150 to 203 cm (60 to 80 in)
calcium carbonate equivalent: 50 to 85 percent
Texture: Gravelly loam, gravelly clay loam or gravelly silty clay loam
Rock fragments: 15 to 35 percent; kind-limestone; shape-nonflat; size-gravels

A horizon
Hue: 7.5YR, 10YR, or 2.5Y
Value: 5 or 6
Chroma: 2 or 3
Texture: Gravelly loam, gravelly clay loam or gravelly silty clay loam
Bk or BCK horizon
Hue: 7.5YR, 10YR, or 2.5Y
Value: 5 to 7
Chroma: 2 to 4
Texture: Gravelly loam, gravelly clay loam or gravelly silty clay loam

COMPETING SERIES: These are the Seawillow soils in the same family and closely similar Altoga, Brackett, Cuthand, Doudle, Howe, Mclennan, Sunev and Venus.

Altoga and Mclennan soils: have fine-silty control sections and less than 15 percent coarse fragments in the 25 to 102 cm (10 to 40-in) control section. Brackett soils: have sola 51 to 102 cm (20 to 40 in) thick and a paralithic contact with limestone.
Doudle soils: have a Coarse loamy control section.
Cuthand, Seawillow, Sunev, and Venus soils: have less than 15 percent coarse fragments in the control section.
Cuthand soils: have coarse-silty control sections.
Sunev and Venus soils: have mollic epipedons.

GEOGRAPHIC SETTING: Parent material: calcareous loamy colluvium containing limestone gravel
Landscape: hills
Landform: side slopes and base slopes of ridges
Slope: 3 to 20 percent
Precipitation Pattern: The majority of the yearly amount occurs during the fall and spring months. The winter and summer months are normally drier.
Mean annual precipitation: 762 to 889 mm (30 to 35 in)
Mean annual temperature: 17.8 to 18.8 degrees C (64 to 66 degrees F)
Frost-free period: 235 to 245 days
Elevation: 137 to 496 m (450 to 1627 ft)

GEOGRAPHICALLY ASSOCIATED SOILS: These are the competing Seawillow series, and Brackett, Denton, Eckrant, Frio, Krum, Maloterre, and Purves series.
Brackett soils: are on steeper slopes on side slopes and have shallow to paralithic contact.
Seawillow soils are on risers of stream terrace positions.
Denton soils: have more than 35 percent clay and have lithic contact within 152 cm (40 in).
Eckrant and Purves soils: have sola less than 51 cm.
Frio soils: have thick mollic epipedons and occupy the flood plains.
Krum soils: have mollic epipedons, fine textured control sections and occupy lower concave positions.
Maloterre soils: have sola less than 25 cm (10 in) thick.

DRAINAGE AND PERMEABILITY:
Drainage class: well
Permeability class: moderate
Runoff: low on 3 to 5 percent slopes, and medium on 5 to 20 percent slopes
USE AND VEGETATION: Used mainly for rangeland.Native vegetation includes little bluestem, indiangrass, big bluestem, sideoats grama, silver bluestem, Texas oak, juniper and mesquite.

DISTRIBUTION AND EXTENT:
General location: north-central Texas
Land Resource Region: J-Southwestern Prairies Cotton and Forage Region
Major Land Resource Area: 85-Grand Prairie
Extent: moderate
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Temple, Texas

SERIES ESTABLISHED: Bosque County, Texas; 1977.

REMARKS: These soils were previously included with the Lewisville or Altoga series.

Classification was changed 11/89 from Typic Ustochrepts to Udic Ustochrepts.

Diagnostic horizons and features recognized in this pedon are:

Ochric epipedon: 0 to 25 cm (0 to 10 in) (A horizon)
Calcic horizon: 25 to 203 cm (12 to 51 in) (Bk1, Bk2 and BCk)
Taxonomic Version: Keys to Soil Taxonomy, Twelfth Edition, 2014


National Cooperative Soil Survey
U.S.A.