LOCATION SANTUC SCEstablished Series
TAXONOMIC CLASS: Fine-loamy, mixed, semiactive, thermic Aquic Hapludults
TYPICAL PEDON: Santuc sandy loam - on a 2 percent slope in a wooded area. (Colors are for moist soil.)
A--0 to 3 inches; dark grayish brown (10YR 4/2) loamy coarse sand; weak fine granular structure; very friable; many fine and medium roots, and few coarse roots; extremely acid; clear smooth boundary. (2 to 8 inches thick)
E--3 to 9 inches; brown (10YR 5/3) sandy loam; weak fine granular structure; very friable; common fine and few medium roots; very strongly acid; clear smooth boundary. (0 to 8 inches thick)
Bt1--9 to 14 inches; yellowish brown (10YR 5/4) sandy loam; weak medium angular blocky structure; friable; few fine and medium roots; few faint clay films on faces of peds; extremely acid; gradual smooth boundary.
Bt2--14 to 26 inches; yellowish brown (10YR 5/4) sandy clay loam; moderate coarse subangular and angular blocky structure; firm; few fine and medium roots; many distinct clay films on faces of peds; 2 percent quartz gravel; common medium distinct reddish yellow (7.5YR 6/8) and few medium prominent yellowish red (5YR 5/8) masses of oxidized iron; extremely acid; clear smooth boundary.
Bt3--26 to 41 inches; brownish yellow (10YR 6/6) clay loam; weak coarse prismatic parting to strong coarse angular blocky structure; very firm; few fine and medium roots; many prominent clay films on faces of peds; common coarse distinct yellow (10YR 7/8) masses of oxidized iron and common coarse prominent light brownish gray (10YR 6/2) iron depletions; extremely acid; clear smooth boundary. (Combined thickness of the Bt horizon is 21 to 40 inches.)
BC--41 to 51 inches; yellow (10YR 7/8) loam; weak medium subangular blocky structure; firm; few fine roots; few distinct clay films on faces of peds; many coarse distinct very pale brown (10YR 8/3) and common medium distinct light brownish gray (10YR 6/2) and light gray (10YR 7/1) iron depletions; extremely acid; clear wavy boundary. (0 to 15 inches thick)
C--51 to 60 inches; very pale brown (10YR 8/4) sandy loam saprolite; massive; friable; many medium distinct yellow (10YR 7/8), and few coarse prominent reddish yellow (7.5YR 6/8) masses of oxidized iron and common medium distinct light brownish gray (10YR 6/2) iron depletions; extremely acid.
TYPE LOCATION: Union County, South Carolina; 9 miles north of Whitmire, 1.24 miles southwest of the intersection of S.C. Highway 24 and S.C. Highway 132 on S.C. Highway 132; 50 feet east of road.
RANGE IN CHARACTERISTICS: Solum thickness ranges from 40 to 60 inches or more. Depth to bedrock is more than 60 inches. The soil is extremely acid to strongly acid. Content of quartz gravel ranges from 0 to 10 percent by volume in the A and E horizons and from 0 to 5 percent in the B and C horizons. Flakes of mica range from none to a few in the Bt and C horizons.
The A horizon has hue of 7.5YR or 10YR, value of 4 to 6, and chroma of 2 to 4. It is loamy coarse sand, loamy sand, coarse sandy loam, or sandy loam.
The E horizon, where present, has hue of 7.5YR or 10YR, value of 5 or 6, and chroma of 3 to 6. It is loamy coarse sand, loamy sand, coarse sandy loam, or sandy loam.
The Bt horizon has hue of 7.5YR or 10YR, value of 5 or 6, and chroma of 4 to 8. In some pedons, the lower Bt horizon has masses of oxidized iron in shades of yellow, brown, or red. Iron depletions with chroma of 2 or less are in the upper 24 inches of the Bt horizon. The texture is sandy loam, sandy clay loam, or clay loam, and includes clay in the lower part.
The BC or CB horizon (where present) has hue of 7.5YR or 2.5Y, value of 4 to 6 6, and chroma of 3 to 8. Masses of oxidized iron are in shades of yellow, brown, or red and iron depletions are in shades of gray. The texture is sandy loam, sandy clay loam, or clay loam.
The C horizon has hue of 7.5YR to 2.5Y, value of 4 to 8, and chroma of 3 to 8. It is typically variegated in shades of gray, yellow, or brown. The C horizon is sandy loam, loam, or sandy clay loam saprolite.
COMPETING SERIES: These are the Abell, Altavista, Bertie, Tetotum, and Winton series in the same family, and the Bush River, Helena, and Prosperity series in similar families. Abell soils have a lithologic discontinuity within a depth of 48 inches. Altavista soils are on stream terraces, formed in fluvial sediment, and have an apparent water table. Bertie soils are on the lower coastal plain, formed in marine sediment, and have an apparent water table. Winton soils are on steep bluffs of terraces and formed in fluvial or marine sediment. Bush River, Helena, and Prosperity soils have a clayey particle-size control section. In addition, Bush River and Prosperity soils have a paralithic contact within 60 inches.
GEOGRAPHIC SETTING: Santuc soils are on broad ridges, side slopes, toe slopes and at the heads of small drainageways of the Piedmont uplands. There is a perched water table in late winter and early spring. Slope ranges from 2 to 15 percent. The soil formed in residuum weathered from mixed acid crystalline rocks such as granite or granite gneiss. The mean annual precipitation ranges from 44 to 48 inches, mean annual temperature ranges from 60 to 62 degrees F, and the frost-free season ranges from 210 to 230 days.
GEOGRAPHICALLY ASSOCIATED SOILS: In addition to the similar Bush River, Helena, and Prosperity soils, these include the Appling, Cecil, Durham, Pacolet, Rion, Wateree and Wedowee soils. Appling, Cecil, Pacolet, and Wedowee soils have a clayey particle-size control section and do not have redoximorphic depletions with chroma of 2 or less. Durham and Rion soils do not have redoximorphic depletions with chroma of 2 or less. Wateree soils have a coarse-loamy particle-size control section and do not have redoximorphic depletions with chroma of 2 or less.
DRAINAGE AND PERMEABILITY: Moderately well drained; medium to rapid runoff; moderately slow permeability.
USE AND VEGETATION: Most areas of this soils are forested. Native species include loblolly pine, shortleaf pine, Virginia pine, sweetgum, willow oak, red oak, white oak, yellow-poplar, and American elm. Cleared areas of this soil are used for crops and pasture. Common crops are corn, soybeans, small grain, and vegetables.
DISTRIBUTION AND EXTENT: The Piedmont of South Carolina and possibly Georgia, North Carolina and Virginia. The series is of small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Raleigh, North Carolina
SERIES ESTABLISHED: Newberry County, South Carolina, 2005.
REMARKS: These soils were included with the Helena series in several surveys. The name Santuc is from a small community in Union County, South Carolina. The April 2006 revision changed the series status from tentative to established.
Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon--the zone from the surface of the soil to 9 inches (A and E horizons)
Argillic horizon--the zone from 9 to 41 inches (Bt1, Bt2 and Bt3 horizons)
MLRA = 136
SIR = SC0143
ADDITIONAL DATA:
TABULAR SERIES DATA:
SOI-5 Soil Name Slope Airtemp FrFr/Seas Precip Elevation
SC0143 SANTUC 2-15 57-62 180-230 44-48 350-500
SOI-5 FloodL FloodH Watertable Kind Months Bedrock Hardness SC0143 NONE 1.5-3.0 PERCHED DEC-MAR >60SOI-5 Depth Texture 3-Inch No-10 Clay% -CEC- SC0143 0- 3 SL COSL 0-5 85-100 5-18 1-5 SC0143 0- 3 LS LCOS 0-5 85-100 2-10 1-3 SC0143 3- 9 LS COSL SL 0-5 85-100 2-18 1-3 SC0143 9-26 SL SCL CL 0-2 90-100 10-35 1-6 SC0143 26-41 SCL CL C 0-2 90-95 20-45 4-10 SC0143 41-60 L SL SCL 0-2 90-100 10-27 2-7
SOI-5 Depth -pH- O.M. Salin Permeab Shnk-Swll SC0143 0- 3 3.6- 5.5 0.5-2.0 0-0 0.6-6.0 LOW SC0143 0- 3 3.6- 5.5 0.5-2.0 0-0 2.0-6.0 LOW SC0143 3- 9 3.6- 5.5 0.5-1.0 0-0 0.6-6.0 LOW SC0143 9-26 3.6- 5.5 0.0-0.5 0-0 0.6-2.0 LOW SC0143 26-41 3.6- 5.5 0.0-0.5 0-0 0.2-0.6 MODERATE SC0143 41-60 3.6- 5.5 0.0-0.5 0-0 0.6-2.0 LOW