LOCATION GOMERY TXEstablished Series
TAXONOMIC CLASS: Loamy, siliceous, semiactive, thermic Arenic Hapludults
TYPICAL PEDON: Gomery loamy fine sand - forested. (Colors are for moist soil unless otherwise stated.)
A--0 to 5 inches; dark grayish brown (10YR 4/2) loamy fine sand; grayish brown (10YR 5/2) dry; weak granular structure; very friable, soft; many very fine, medium, and coarse roots; few rounded siliceous pebbles 2 mm. to 15 mm. in. diameter; slightly acid; clear smooth boundary. (3 to 7 inches thick)
E1--5 to 18 inches; pale brown (10YR 6/3) loamy fine sand; very pale brown (10YR 7/3) dry; single grained; loose, very friable; many fine, medium, and coarse roots; few rounded siliceous pebbles 2 mm. to 15 mm. in. diameter; slightly acid; clear smooth boundary. (10 to 15 inches thick)
E2--18 to 26 inches; light yellowish brown (10YR 6/4) loamy fine sand; very pale brown (10YR 7/4) dry; common medium strong brown (7.5YR 5/6) mottles; single grained; slightly hard, very friable; many fine, medium, and coarse roots; few rounded siliceous pebbles 2 mm. to 25 mm. in diameter; slightly acid; clear smooth boundary. (7 to 16 inches thick)
Bt--26 to 31 inches; mottled grayish brown (10YR 5/2), red (10R 4/8) and yellowish brown (10YR 5/4) sandy clay loam; moderate fine subangular blocky structure; very hard, friable, slightly sticky and slightly plastic; common fine roots; many medium and coarse roots; common fine pores; few black concretions 5 mm. to 15 mm. in diameter; few rounded siliceous pebbles 5 mm. to 15 mm. in diameter; strongly acid; clear smooth boundary. (0 to 10 inches thick)
Btg1--31 to 47 inches; grayish brown (10YR 5/2) sandy clay loam; light brownish gray (10YR 6/2) dry; common medium prominent red (10R 4/6) mottles; moderate fine subangular blocky structure; very hard, friable, sticky and plastic; few fine roots; common fine pores; thick continuous brown (10YR 5/3) clay films on surfaces of peds; moderately acid; clear smooth boundary. (10 to 16 inches thick)
Btg2--47 to 54 inches; gray (10YR 5/1) sandy clay loam; gray (10YR 6/1) dry; common medium prominent red (2.5YR 4/6) mottles; moderate fine subangular blocky structure; very hard, friable, sticky and plastic; few fine roots; common fine pores; few light gray fragments of sandstone; moderately acid; clear smooth boundary. (4 to 10 inches thick)
Cr--54 to 60 inches; strongly cemented gray sandstone.
TYPE LOCATION: Walker County, Texas; from the intersection of Farm Road 230 and Texas Highway 19 in Trinity, Texas, 4.9 miles north on Texas Highway 19; then west 0.9 mile on Farm Road 1893 and northwest of road 60 feet in a loblolly pine plantation.
RANGE IN CHARACTERISTICS: Solum thickness and depth to paralithic contact ranges from 40 to 60 inches. The A and E horizons are loamy fine sand, loamy sand, or fine sand and range from slightly acid to very strongly acid.
The A horizon has hue of 10YR, value of 3 to 5 and chroma 2 or 3.
The E horizons have hue 10YR, value of 5 to 7 and chroma of 2 to 4.
The Btg or Bt horizons have hue of 10YR, value of 4 to 7 and chroma of 1 or 2 with few to many yellowish brown, dark brown, yellowish red, and red mottles. Some pedons have a mottled matrix, and some pedons have chroma of 3 with mottles in the lower part of the argillic horizon. They are sandy clay loam or clay loam, and range to sandy clay in the lower part of some pedons. The Bt horizons range from moderately acid to very strongly acid.
The Cr layer ranges from stratified shaly clay and sandstone to weakly or strongly cemented sandstone.
COMPETING SERIES: These are the Baymeade, Blaney, Chisolm, Tenaha, and Valhalla series in the same family, and the similar Elmina series. All of these soils lack paralithic contact at 40 to 60 inches. Elmina soils have more than 35 percent base saturation and have clayey Bt horizons.
GEOGRAPHIC SETTING: The Gomery soils are on gently sloping to moderately steep uplands. Surfaces are plane to convex. Slope gradient ranges from 1 to 15 percent. The soil is formed in beds of clay and shaly sandstone of the Manning and Wellborn formations. The climate is warm and humid. The average annual precipitation ranges from 42 to 48 inches. The average annual temperature ranges from 67 degrees to 70 degrees F., and Thornthwaite annual P-E indices from 64 to
78.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Goreen, Moten, and Rosenwall series. Goreen and Rosenwall soils have surface layers less than 20 inches thick and sola less than 40 inches thick. Moten soils have loamy surface layers and coarse-loamy control section.
DRAINAGE AND PERMEABILITY: Somewhat poorly drained. Slow to medium runoff. Moderately slow permeability. Water is perched on top of the rock during wet seasons.
USE AND VEGETATION: Small acreages in pasture and row crops but mainly in forest. Pastures are mostly improved pastures of coastal bermudagrass. Row crops are corn and forage crops. Native vegetation is a pine-hardwood forest with an
understory of eastern little bluestem and low panicums.
DISTRIBUTION AND EXTENT: Southeastern Texas. Acreage is of moderate extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Temple, Texas
SERIES ESTABLISHED: Walker County, Texas; l975.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - 0 to 5 inches
Albic horizon - 5 to 26 inches
Argillic horizon - 26 to 54 inches
Paralithic contact - at 54 inches
Aquic feature - gray mottles due to wetness in upper Bt