LOCATION THURSA SCEstablished Series
TAXONOMIC CLASS: Fine-loamy, kaolinitic, thermic Typic Kandiudults
TYPICAL PEDON: Thursa sand on a smooth 1 percent east-facing slope, in a cultivated field. (Colors are for moist soil, unless otherwise indicated.)
Ap--0 to 10 inches; brown (10YR 5/3) sand, pale brown (10YR 6/3) dry,; weak medium subangular blocky structure; very friable, nonsticky, nonplastic; few fine and medium roots throughout; moderately acid; abrupt smooth boundary. (5 to 12 inches thick)
Bt1--10 to 28 inches; yellowish brown (10YR 5/8) sandy clay loam; moderate medium subangular blocky structure; friable; slightly sticky; moderately plastic; common distinct clay films on faces of peds; strongly acid; clear wavy boundary.
Bt2--28 to 35 inches; yellowish brown (10YR 5/8) sandy clay loam; few medium distinct yellowish red (5YR 5/8) mottles; moderate medium subangular blocky structure; friable; slightly sticky; moderately plastic; common distinct clay films on faces of peds; 1 percent, 2 to 5 mm ironstone nodules; strongly acid; clear wavy boundary. (Combined thickness of the upper Bt is 10 to 30 inches.)
Bt3--35 to 50 inches; yellowish red (5YR 5/6) sandy clay; common medium distinct yellowish brown (10YR 5/6) mottles; moderate medium subangular blocky structure; friable; slightly sticky; moderately plastic; common prominent clay films on faces of peds; 1 percent, 2 to 5 mm ironstone nodules; strongly acid; gradual wavy boundary.
Bt4--50 to 80 inches; red (2.5YR 5/8) clay; common medium prominent yellowish brown (10YR 5/6) mottles; moderate medium subangular blocky structure; friable; slightly sticky; moderately plastic; common distinct clay films on faces of peds; 1 percent, 2 to 5 mm ironstone nodules; very strongly acid. (Combined thickness of the lower Bt horizon is more than 40 inches.)
TYPE LOCATION: Lee County, South Carolina; about 1.2 miles west on W. Church Street from the intersection of Main Street and W. Church Street in Bishopville; about 1.5 miles west on Camden Highway; 0.2 mile south on Traub Road; 45 feet east of Traub Road; Bishopville West, South Carolina 7.5 minute topographic quadrangle; lat. 34 degrees 13 minutes 43 seconds N. and long. 80 degrees 17 minutes 14 seconds W., NAD 83.
RANGE IN CHARACTERISTICS:
Thickness of the sandy surface and subsurface layers: 5 to 19 inches
Depth to top of argillic horizon: 5 to 19 inches
Depth to base of argillic horizon: 60 to more than 80 inches
Depth to top of the kandic horizon: 5 to 19 inches
Depth to bedrock: Greater than 80 inches
Depth to seasonal high water table: 72 to 80 inches or more, November to March
Rock fragment content: 0 to 10 percent, by volume, throughout; mostly ironstone or quartz pebbles
Soil reaction: Extremely acid to moderately acid, unless limed
RANGE OF INDIVIDUAL HORIZONS:
Ap horizon or A horizon (where present):
Color--hue of 10YR or 2.5Y, value of 4 to 7, chroma of 1 to 4
Texture--sand, loamy sand, sandy loam, or fine sandy loam
E horizon (where present):
Color--hue of 10YR or 2.5Y, value of 4 to 7, chroma of 2 to 6
Texture--sand or loamy sand
Bt horizon (upper part):
Color--hue of 7.5YR or 10YR, value of 5 to 8, chroma of 3 to 8
Texture--commonly sandy clay loam, but includes sandy loam, fine sandy loam,
or clay loam
Mottles (where present)--Non-redoximorphic mottles in shades of red and brown
Bt horizon (lower part):
Color--hue of 10R to 5YR, value of 3 to 5, and chroma of 4 to 8
Texture--commonly clay, but includes sandy clay loam, or sandy clay, or clay loam
Mottles (where present)--Non-redoximorphic mottles in shades of red, brown, and yellow
COMPETING SERIES:
Norfolk soils--do not have hue of 5YR or redder in any part of the Bt horizon
Orangeburg soils--have an upper Bt horizon less than 10 inches thick where hue is browner than 5YR
GEOGRAPHIC SETTING:
Landscape: Middle and upper coastal plain
Landform: Uplands
Geomorphic Component: Interfluves
Hillslope Profile Position: summit, shoulder, backslope
Parent Material: Fluviomarine deposits, marine deposits
Slope: 0 to 6 percent
Elevation: 220 to 350 feet
Frost Free Period: 195 to 245 days
Mean Annual Air Temperature: 57 to 70 degrees F.
Mean Annual Precipitation: 35 to 55 inches
GEOGRAPHICALLY ASSOCIATED SOILS:
Dothan soils--have 5 percent or more plinthite in a layer within 60 inches of the surface; on similar landforms
Faceville soils--have a fine particle size control; on similar landforms
Fuquay soils--have 5 percent or more plinthite in a layer within 60 inches of the surface and have an arenic surface; on similar landforms
Lucy soils--have an arenic surface; on similar landforms
Nankin soils--have a fine particle-size control section and have a clay decrease within 60 inches of the surface; on similar landforms
Norfolk soils--do not have hue of 5YR or redder in any part of the Bt; on similar landforms
Orangeburg soils--have an upper Bt horizon less than 10 inches thick where hue is browner than 5YR; on similar landforms
Rains soils-are poorly drained and have a seasonal high water table above 12 inches; in depressions
Wagram soils--have an arenic surface; on similar landforms
DRAINAGE AND PERMEABILITY:
Depth Class: Very deep
Drainage Class (Agricultural): Well drained
Internal Free Water Occurrence: Very deep
Flooding Frequency and Duration: None
Ponding Frequency and Duration: None
Index Surface Runoff: Low
Permeability: Moderate (Saturated Hydraulic Conductivity: Moderately high)
Shrink-Swell Potential: Low
USE AND VEGETATION:
Major Uses: Cropland
Dominant Vegetation: Where cultivated--cotton, peanuts, and soybeans. Where wooded--pines and oaks.
DISTRIBUTION AND EXTENT:
Distribution: South Carolina
Extent: Small
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Raleigh, North Carolina
SERIES ESTABLISHED: Lee County, South Carolina, 2005
REMARKS: Thursa soils were previously mapped with the Marlboro, Norfolk, and Ruston soils. Diagnostic horizons and soil characteristics recognized in this pedon:
Ochric epipedon--the zone from 0 to 10 inches (Ap horizon)
Argillic horizon--the zone from 10 to 80 inches (Bt horizons)
Kandic horizon--the zone from approximately 10 to 50 inches (Bt horizons)
Series control section--the zone from 0 to 80 inches
ADDITIONAL DATA:
Laboratory Data available from the Clemson University; pedon numbers S00SC06160 and S00SC06174.
Database Information:
Typical Pedon Data Mapunit ID--446248;
OSD User Pedon ID--To be completed
TABULAR SERIES DATA:
Soil Name Slope Airtemp FrFr/Seas Precip Elevation THURSA 0-6 57-70 195-245 35-55 220-350FloodL FloodH Watertable Kind Months Bedrock Hardness NONE >6.0 - - >80 -
Depth Texture 3-Inch No-10 Clay% -CEC- 0-10 SL FSL 0-5 90-100 5-18 1-4 0-10 S LS 0-5 90-100 2-8 1-3 10-35 SL FSL SCL CL 0-5 90-100 18-35 2-4 35-72 C SCL CL SC 0-5 90-100 20-45 2-5
Depth -pH- O.M. Salin Permeab Shnk-Swll 0-10 3.5-6.0 0.5-2.0 0-0 2.0-6.0 LOW 0-10 3.5-6.0 0.5-2.0 0-0 6.0-20 LOW 10-35 3.5-6.0 0.0-0.5 0-0 0.6-2.0 LOW 35-72 3.5-6.0 0.0-0.5 0-0 0.6-2.0 LOW