LOCATION TRAVERTINE OKEstablished Series
TAXONOMIC CLASS: Loamy-skeletal, siliceous, active, thermic, shallow Udic Haplustepts
TYPICAL PEDON: Travertine channery silt loam--under a canopy of hardwoods. (Colors are for dry soil unless otherwise stated.)
A--0 to 13 inches; pale brown (10YR 6/3) channery silt loam, brown (10YR 4/3) moist; weak fine granular structure; soft, friable; common medium and coarse roots; many fine and medium pores; flat fragments of shale and siltstone make up 35 percent by volume; slightly acid; gradual wavy boundary. (5 to 13 inches thick)
Bw--13 to 18 inches; pink (7.5YR 7/4) extremely channery loam, brown (7.5YR 5/4) moist; weak fine granular structure; soft, friable; few fine and medium roots; flat fragments of shale and siltstone make up 70 percent by volume; neutral; clear wavy boundary. (4 to 12 inches thick)
Cr--18 to 26 inches; platy siliceous shale and siltstone tilted 60 degrees from horizontal.
TYPE LOCATION: Murray County, Oklahoma; about 1/4 mile east of Dougherty on Oklahoma Highway 110; 1,350 feet west and 650 feet north of the southeast corner of sec. 1, T. 2 S., R. 2 E.
RANGE IN CHARACTERISTICS: Solum thickness and depth to shale and siltstone bedrock ranges from 10 to 20 inches.
The A horizon has hue of 10YR, value of 5 or 6, and chroma of 2 or 3. It is channery or very channery silt loam or loam. Content of coarse flat fragments make up 20 to 45 percent by volume. About 10 to 25 percent by volume is less than 76 mm in diameter and 10 to 20 percent by volume is more than 76 mm in diameter. Reaction is medium or slightly acid.
The B horizon has hue of 10 YR or 7.5YR, value of 5 to 8, and chroma of 2 or 4. It is extremely channery silt loam, extremely channery clay loam,extremely channery silty clay loam, or extremely channery loam. Content of coarse flat fragments make up 60 to 90 percent by volume. About 10 to 20 percent by volume is less than 76 mm in diameter and 50 to 70 percent by volume is more than 76 mm in diameter. Reaction is very strongly acid to neutral.
The Cr horizon is platy siliceous shale and siltstone that is tilted more than 20 degrees from horizontal.
COMPETING SERIES: There are no other series in the this family.
GEOGRAPHIC SETTING: Travertine soils are on gently sloping to steep shoulders and summits of hills or ridges in the Arbuckle Mountains. The soil formed in residuum weathered from tilted platy siliceous shale, sandstone and siltstone of Mississipan or Ordovician age. Slopes are 3 to 30 percent. The climate is subhumid. Mean annual precipitation is 36 to 38 inches. Mean annual temperature ranges from 62 to 64 degrees F. Thornthwaite annual P-E indices range from 46 to 62.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the competing Bromide, Chigley and Kiti soils. Bromide soils occur on side slopes. Chigley soils have less than 35 percent coarse fragments and more than 35 percent clay and occur on similar areas.Kiti soils occur on ridgetops over hard tilted limestone bedrock.
DRAINAGE AND PERMEABILITY: Travertine soils are well drained. Runoff is rapid and permeability is moderate.
USE AND VEGETATION: Used mainly for rangeland. The canopy vegetation consists primarily of post oak and blackjack oak. The understory consists of a few winged elm and sparse clumps of tall and midgrasses.
DISTRIBUTION AND EXTENT: Arbuckle Mountains of Oklahoma. The series is not extensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Temple, Texas
SERIES ESTABLISHED: Murray County, Oklahoma; 1982.
ADDITIONAL DATA: Oklahoma State University laboratory data 78-OK-50-6.