LOCATION TAWCAW SC+FL GA NCEstablished Series
TAXONOMIC CLASS: Fine, kaolinitic, thermic Fluvaquentic Dystrudepts
TYPICAL PEDON: Tawcaw silty clay loam--forested. (Colors are for moist soil.)
A--0 to 5 inches; brown (7.5YR 4/4) silty clay loam; weak fine granular structure; friable; many fine roots; few fine flakes of mica; strongly acid; clear smooth boundary. (2 to 10 inches thick)
Bw1--5 to 15 inches; light yellowish brown (10YR 6/4) silty clay loam; many fine distinct yellowish brown (10YR 5/8) soft masses of iron accumulation; weak medium subangular blocky structure; friable; many fine roots and pores; few fine flakes of mica; common fine brown and black concretions; very strongly acid; gradual smooth boundary.
Bw2--15 to 38 inches; mottled yellowish brown (10YR 5/8) and pale brown (10YR 6/3) silty clay loam; common medium distinct light gray (10YR 7/1) iron depletions and few fine distinct strong brown (7.5YR 5/6) soft masses of iron accumulation; weak medium subangular blocky structure; friable; few fine roots; few fine flakes of mica; many fine brown and black concretions; strongly acid; gradual smooth boundary.
Bw3--38 to 58 inches; mottled yellowish brown (10YR 5/8) and light brownish gray (10YR 6/2) silty clay; few fine distinct strong brown (7.5YR 5/6) soft masses of iron accumulation and gray (10YR 6/1) iron depletions; weak medium subangular blocky structure; firm; few fine roots; few fine flakes of mica; many fine brown and black concretions; moderately acid; gradual smooth boundary. (Combined thickness of the Bw horizon is 37 to more than 60 inches)
C--58 to 72 inches; mottled yellowish brown (10YR 5/8) and gray (10YR 6/1) clay loam; common fine distinct strong brown (7.5YR 5/6) soft masses of iron accumulation and pale brown (10YR 6/3) iron depletions; massive; firm; few fine flakes of mica; many fine brown and black concretions; moderately acid.
TYPE LOCATION: Clarendon County, South Carolina; 12 miles south of Manning along SC Highway 260, 0.7 mile east of Santee Dam, 2 miles south of secondary road 351.
RANGE IN CHARACTERISTICS:
Depth to Bedrock: Greater than 60 inches
Depth to Seasonal High Water Table: 18 to 30 inches, November to April
Soil Reaction: very strongly acid to slightly acid, except where limed
Thickness of solum: 40 to 72 or more inches
Other Features: few to many flakes of mica throughout the solum. Few to many dark concretions or soft nodules are in the Bw horizon in some pedons. The particle-size control section has more than 25 percent silt.
RANGE OF INDIVIDUAL HORIZONS:
A horizon:
Color--hue of 5YR to 10YR, value of 3 to 5, and chroma of 2 to 6.
Texture (fine-earth fraction)-- loam, silt loam, silty clay loam, clay loam, silty clay, or clay
Bw horizon (upper part):
Color--hue of 5YR to 10YR, value of 4 to 6, and chroma of 3 to 8
Texture (fine-earth fraction)-- silty clay, silty clay loam, clay loam, or clay
Redoximorphic features--iron masses in shade of red, yellow, or brown. Iron depletions of chroma 2 or less are within 24 inches of the surface
Bw horizon (lower part):
Color--hue of 7.5YR to 2.5Y, value of 4 to 7, and chroma of 1 to 3
Texture (fine-earth fraction)-- silty clay, silty clay loam, clay loam, or clay
Redoximorphic features (if they occur)--iron masses in shade of red, yellow, or brown, or it is mottled in shades of gray, brown, red, or yellow.
BC horizon (if it occurs):
Color--hue of 7.5YR to 2.5Y, value of 4 to 7, and chroma of 1 to 3
Texture (fine-earth fraction)-- loam, silty clay loam, clay loam, or sandy clay loam
Redoximorphic features (if they occur)--iron masses in shade of red, yellow, or brown, or it is mottled in shades of gray, brown, red, or yellow.
C horizon:
Color--hue of 7.5YR to 2.5Y, value of 4 to 7, and chroma of 1 to 3
Texture (fine-earth fraction)-- Texture is variable. Some pedons are stratified in various textures.
Redoximorphic features (if they occur)--iron masses in shade of red, yellow, or brown, or it is mottled in shades of gray, brown, red, or yellow.
COMPETING SERIES:
No known series in same family.
GEOGRAPHIC SETTING:
Landscape: Coastal Plain
Landform: flood plains along the lower reaches of rivers which originated in the Piedmont Plateau or Appalachian Mountains
Geomorphic Component: treads
Parent Material: fluvial sediments
Elevation: 10 to 90 feet
Mean Annual Air Temperature: 59 to 70 degrees
Mean Annual Precipitation: 38 to 52 inches
Frost Free Period: 1900 to 245 days
GEOGRAPHICALLY ASSOCIATED SOILS:
Cantey soils-- soils have an argillic horizon and are on higher areas
Chastain soils-- have dominant moist chroma of 2 or less between the A or Ap horizon and 30 inches
Chewacla soils-- have less than 35 percent clay in the particle-size control section
Johnston soils-- soils have an umbric epipedon more than 24 inches thick
Leaf soils-- soils have an argillic horizon and are on higher areas
Wehadkee soils-- have less than 35 percent clay in the particle-size control section
DRAINAGE AND PERMEABILITY:
Drainage Class (Agricultural): somewhat poorly drained
Internal Free Water Occurrence: shallow to moderately deep, common
Index Surface Runoff: medium
Permeability: slow
USE AND VEGETATION:
Major Uses: forest
Dominant Vegetation: Where cultivated-- pasture, corn, or hay. Where wooded-- water tolerant hardwoods such as sweetgum, swamp tupelo, black tupelo, beech, elm, ash, cottonwood, water oak, willow oak, and cherrybark oak.
DISTRIBUTION AND EXTENT:
Distribution: South Carolina and Georgia, and possibly Alabama, Florida, North Carolina, and Virginia
Extent: moderate
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Raleigh, North Carolina
SERIES ESTABLISHED: Clarendon County, South Carolina; 1972.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - the zone from the surface of the soil to 5 inches (A horizon)
Cambic horizon - the zone from 5 to 58 inches (Bw1, Bw2 and Bw2 horizons)
Fluventic feature - irregular decrease in organic carbon content with depth
ADDITIONAL DATA:
TABULAR SERIES DATA:
SOI-5 Soil Name Slope Airtemp FrFr/Seas Precip Elevation SC0034 TAWCAW 0- 2 59- 70 190-245 38- 52 10- 90SOI-5 FloodL FloodH Watertable Kind Months Bedrock Hardness SC0034 COMMON 1.5-2.5 APPARENT NOV-APR 60-60
SOI-5 Depth Texture 3-Inch No-10 Clay% -CEC- SC0034 0- 5 SICL CL 0- 0 100-100 30-40 10- 30 SC0034 0- 5 SIL L 0- 0 100-100 10-25 10- 25 SC0034 0- 5 SIC C 0- 0 100-100 40-60 15- 35 SC0034 5-58 SICL SIC C 0- 0 100-100 35-70 10- 20 SC0034 58-72 VAR - - - -
SOI-5 Depth -pH- O.M. Salin Permeab Shnk-Swll SC0034 0- 5 4.5- 6.5 1.-5. 0- 0 0.06- 0.6 MODERATE SC0034 0- 5 4.5- 6.5 1.-5. 0- 0 0.06- 0.6 LOW SC0034 0- 5 4.5- 6.5 1.-5. 0- 0 0.06- 0.2 MODERATE SC0034 5-58 4.5- 6.5 1.-3. 0- 0 0.06- 0.2 MODERATE SC0034 58-72 - 1.-2. - -