LOCATION ROMAYOR TXTentative Series
TAXONOMIC CLASS: Sandy over loamy, siliceous, semiactive, nonacid, thermic Aquic Udifluvents
TYPICAL PEDON: Romayor sand.
(Colors are for moist soil unless otherwise stated.)
Ap--0 to 7 inches; dark brown (10YR 4/3) sand; single grain; loose; common fine and medium roots; slightly acid; clear smooth boundary. (4 to 10 inches thick)
C--7 to 22 inches; yellowish brown (10YR 5/4) sand; single grain; loose; neutral; abrupt smooth boundary. (14 to 29 inches thick)
2Ab--22 to 27 inches; grayish brown (10YR 5/2) sandy loam; common fine and medium distinct strong brown (7.5YR 5/6) mottles; weak fine subangular blocky structure; hard, friable, sticky, slightly plastic; slightly acid; clear smooth boundary. (5 to 8 inches thick)
2Bgb--27 to 35 inches; dark gray (10YR 4/1) sandy clay loam; common fine and medium distinct yellowish red (5YR 5/6) mottles; weak fine subangular blocky structure; very hard, firm, sticky, slightly plastic; few pockets of sandy loam material; medium acid; gradual smooth boundary. (8 to 12 inches thick)
2Cg1--35 to 53 inches; dark gray (10YR 4/1) sandy clay; common fine and medium distinct strong brown (7.5YR 5/6) and few common distinct brownish yellow (10YR 6/6) mottles; massive; extremely hard, very firm, sticky, plastic; few small gravels; few fine and medium pores; few streaks of loamy sand; medium acid; gradual smooth boundary. (5 to 30 inches thick)
2Cg2--53 to 72 inches; dark gray (10YR 4/1) sandy clay; common fine and medium prominent red (2.5YR 4/6) mottles; massive; extremely hard, very firm, sticky, plastic; few small gravels; few fine and medium pores; few streaks of loamy sand; moderately alkaline.
TYPE LOCATION: Liberty County, Texas; from Romayor, 2.0 miles west on Texas Highway 105 past Trinity River bridge, and 300 yards southwest in pasture.
RANGE IN CHARACTERISTICS: Solum thickness ranges from 60 to more than 80 inches. Reaction ranges from medium acid through moderately alkaline.
The A and C horizons, in the overwash materials, have a hue of 10YR, value of 4 or 5, and chroma of 2 through 4. Texture is sand or loamy sand. These horizons range from 20 to 36 inches thick.
The Ab horizon has colors in hue of 10YR, value of 5 or 6, and chroma of 1 or 2. Texture is sandy loam, loam or sandy clay loam. Mottles range from none to common in shades of brown, red and yellow.
The Bgb and Cg horizons have colors in hue of 10YR, value of 3 through 5, and chroma of 1 or 2. Texture is sandy clay loam, sandy clay, or clay. Some pedons have a few small round pebbles and pockets and streaks of loamy sand. Mottles range from few to common in shades of red, yellow and brown throughout the B horizons. Calcium carbonate concretions range from none to few.
COMPETING SERIES: There are no series in the same family. Other soils are the Bruno, Hatliff, Iuka, Kemp, Lassiter, Nahatche and Ochlockonee series. Bruno soils have sandy control sections. Hatliff and Ochlockonee soils have a coarse loamy control section. Lassiter soils have a fine-silty control section and Kemp and Nahatche soils have a fine-loamy control section.
GEOGRAPHIC SETTING: Romayor soils are on flood plains and lower terraces of the Trinity River and major streams. Slopes range from 0 to 3 percent. Romayor soils formed in sandy overwash material deposited over clayey and loamy alluvium. Mean annual rainfall ranges from 48 to 52 inches. Mean annual temperature ranges from 67 to 70 degrees F. Thornthwaite annual P-E indices range from 70 to 84.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the competing Ochlockonee, Bruno, Hatliff and Kaman soils. Ochlockonee and Bruno soils are on slightly higher positions and lack gray mottles. Hatliff soils are on similar positions and have a coarse-loamy control section. Kaman soils are in lower positions and are clayey throughout.
DRAINAGE AND PERMEABILITY: Romayor soils are somewhat poorly drained; runoff is slow; permeability is moderately slow. They have a water table at a depth of 2 to 4 feet in the winter and spring.
USE AND VEGETATION: Used mainly for growing timber. A few areas have been cleared and are used for pasture. The trees grown are mixed hardwoods. The understory consists of American beautyberry, wild grape, berry vines, greenbrier, yaupon, myrtle, peppervine, longleaf uniola, beaked panicum, switchgrass and switchcane.
DISTRIBUTION AND EXTENT: Southeast Texas, mainly along rivers and streams draining areas of loamy and sandy soils. The series is of minor extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Temple, Texas
SERIES ESTABLISHED: Liberty County, Texas; 1982. Name is from a nearby community.
REMARKS: These soils were formerly mapped as Kaman with a sandy overwash. Areas mapped to date are believed to have formed during one large flood that occurred in 1941.
Diagnostic horizons and features recognized in this pedon are:
An ochric epipedon.
Stratifications and buried horizons and mottles due to
wetness.