LOCATION GASIL TX+OK

Established Series
Rev. CMT-BJW-CLN-RM
01/2017

GASIL SERIES

The Gasil series consists of very deep, well drained, moderately permeable soils formed in deeply weathered loamy residuum derived from sandstones. These soils are on nearly level to strongly sloping uplands. Slopes range from 0 to 12 percent. Mean annual precipitation is about 940 mm (37 in) and the mean annual air temperature is about 17.8 degrees C (64 degrees F).

TAXONOMIC CLASS: Fine-loamy, siliceous, semiactive, thermic Ultic Paleustalfs

TYPICAL PEDON: Gasil fine sandy loam--pasture.
(Colors are for dry soil unless otherwise stated.)

Ap--0 to 20 cm (0 to 8 in); brown (10YR 5/3) fine sandy loam, brown (10YR 4/3) moist; weak fine granular structure; soft, very friable; common fine roots; few fine pebbles of ironstone; slightly alkaline; clear smooth boundary. (10 to 33 [4 to 13 in] thick)

E--20 to 43 cm (8 to 17 in); very pale brown (10YR 7/3) fine sandy loam, pale brown (10YR 6/3) moist; weak fine granular structure; soft, very friable; common fine roots; few fine pebbles of ironstone; neutral; clear smooth boundary. (0 to 36 cm [0 to 14 in] thick)

Bt1--43 to 76 cm (17 to 30 in); reddish yellow (7.5YR 6/6) sandy clay loam, strong brown (7.5YR 5/6) moist; few fine distinct red mottles; moderate medium subangular blocky structure; hard, firm; common fine roots; many fine pores and root channels; few fine pebbles of ironstone; few fragments of sandstone up to 5 cm (2 in) in length; strongly acid; gradual smooth boundary. (10 to 64 cm [4 to 25 in] thick)

Bt2--76 to 135 cm (30 to 53 in); brownish yellow (10YR 6/8) sandy clay loam, yellowish brown (10YR 5/8) moist; moderate coarse prismatic structure parting to weak fine and medium subangular blocky; hard, firm; common fine roots; many fine pores and root channels; few fine pebbles of ironstone; few fragments of sandstone up to 50 mm (2 in) in length; common medium distinct red (2.5YR 4/8) masses of iron accumulation; strongly acid; gradual smooth boundary. (25 to 76 cm [10 to 30 in] thick)

Bt3--135 to 191 cm (53 to 75 in); brownish yellow (10YR 6/8) sandy clay loam, yellowish brown (10YR 5/8) moist; many medium distinct red (2.5YR 4/8) mottles; moderate coarse prismatic structure parting to weak fine and medium subangular blocky; hard, firm; few fine roots; many fine pores and root channels; few fine reddish black concretions and masses; few fine pockets of uncoated sand grains; moderately acid. (50 to 64 cm [20 to 25 in] thick)

TYPE LOCATION: Cooke County, Texas; from the intersection of U.S. Highway 82 and Farm Road 372 in Gainesville, about 7 miles east on U.S. Highway 82 to Farm Road 678, then 2.3 miles east of Farm Road 678 on U.S. Highway 82, then 2.7 miles south on a county road, and 50 feet east of road in pasture.
USGS Topographic Quadrangle: Collinsville, Texas
Latitude: 33 degrees, 36 minutes, 55.58 seconds, North
Longitude: 96 degrees, 58 minutes, 27.91 seconds, West
Datum: WGS84

RANGE IN CHARACTERISTICS:
Soil Moisture: a Udic-Ustic moisture regime. The soil moisture control section is dry in some part for four-tenths or less of the cumulative days in normal years.
Thickness of the ochric epipedon: 20 to 51 cm (8 to 20 in)
Depth to albic horizon (when present): 10 to 33 cm (4 to 13 in)
Depth to argillic: 20 to 51 cm (8 to 20 in)
Depth to redox concentration: 38 to 79 cm (15 to 31 in)
Depth to redox depletions (when present): 76 to 112 cm (30 to 44 in)
Base saturation: 35 to 65 percent throughout the argillic

Particle size control section (weighted average)
Clay content: 18 to 30 percent

A horizon:
Hue: 10YR or 7.5YR
Value: 4 to 6
Chroma: 2 to 4
Texture: loamy fine sand or fine sandy loam
Rock fragments: 0 to 6 percent; 2 to 75 mm; ironstone nodules
Reaction (pH): moderately acid to slightly alkaline (5.6 - 7.8)

E horizon: (when present)
Hue: 10YR or 7.5YR
Value: 5 to 8
Chroma: 2 to 4
Texture: loamy fine sand or fine sandy loam
Rock fragments: 0 to 6 percent; 2 to 75 mm; ironstone nodules
Reaction (pH): moderately acid to slightly alkaline (5.6 - 7.8)

Bt horizon:
Hue: 10YR, 7.5YR, 2.5YR or 2.5Y
Value: 4 to 7
Chroma: 4 to 8
Texture: fine sandy loam, loam, or sandy clay loam
Clay content: 15 to 35 percent
Redox concentrations: 1 to 10 percent; fine to medium; distinct; in shades of red, yellow, and brown
Redox depletions: 0 to 1 percent; fine to medium; distinct; in shades of grayish; below a depth of 76 cm (30 in)
Rock fragments: 0 to 6 percent; 2 to 75 mm; ironstone nodules and sandstone
Reaction (pH): strongly acid to slightly acid (5.1 - 6.5)

COMPETING SERIES: These are no series in the same family. Similar soils are the Bastrop, Dougherty, Duffau, Galey, Harrah, Konawa, Konsil, May, Silstid, Stephenville, Stidham, and Weatherford series.
Harrah and Konsil soils: have hue redder than 7.5YR in the upper Bt horizon and have an active clay activity class.
Bastrop, Duffau, and May soils: have argillic horizons with a base saturation of more than 75 percent in some part.
Dougherty, Silstid, and Stidham soils: have sandy A horizons more than 51 cm (20 in) thick.
Galey and Konawa soils: have mixed mineralogy.
Stephenville and Weatherford soils: have sola thickness less than 152 cm (60 in).

GEOGRAPHIC SETTING:
Parent material: weathered beds of loamy residuum and interbedded sandstone
Lanscape: Hills
Landform: Interfluves and side slopes of ridges and hills
Slope: 0 to 12 percent, but are mainly in the range of 1 to 8 percent.
Mean annual precipitation: 813 to 1077 mm (32 to 42 in)
Thornthwaite P-E Index: 44 to 64
Mean annual air temperature: 16.7 to 20.6 degrees C (62 to 69 degrees F)
Frost-free period: 220 to 270 days
Elevation: 61.0 to 365.8 m (200 to 1200 ft)

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Dougherty, Galey, Konawa, Konsil, Silstid, and Stidham series.
Dougherty soils: in the loamy family and occur on terraces
Galey soils: occupy positions similar to Gasil
Konawa soils: on stream terraces in the cross timbers MLRA
Konsil soils: occupy positions similar to Gasil
Silstid soils: occur on slightly higher positions in the landscape
Stidham soils: occur on terraces

DRAINAGE AND PERMEABILITY: Well drained. Permeability is moderate. Runoff is negligible on slopes less than 1 percent, low on 1 to 5 percent slopes, and medium on 5 to 12 percent slopes.

USE AND VEGETATION: Used mainly for pasture. Principal cultivated crops are grain sorghum, small grains, and peanuts. Native vegetation is post oak and blackjack oak with an understory of bluestems and other grasses.

DISTRIBUTION AND EXTENT: North-central Texas and southeastern Oklahoma. Cross Timbers (MLRAs 84B & 84C); Texas claypan areas (MLRA 87A). The series is extensive.

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

SERIES ESTABLISHED: Cooke County, Texas; 1973.

REMARKS: Gasil soils were formerly included with the Galey series.

Semiactive cation exchange activity class.
Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon: 0 to 43 cm (0 to 17 in) (Ap and E horizons)
Albic horizon: 20 to 43 cm (8 to 17 in) (E horizon)
Argillic horizon: 43 to 191 cm (17 to 75 in) (Bt1, Bt2, and Bt3 horizons)
Ultic feature: base saturation is less than 75 percent throughout the argillic horizon.

ADDITIONAL DATA: National Soil Survey Laboratory: Cooke Co. TX. S71TX-049-1 (71L290-71L292), and Leon Co. S82TX-289-28.

Taxonomic Version: Keys to Soil Taxonomy, Twelfth Edition, 2014.

National Cooperative Soil Survey
U.S.A.