LOCATION NANFORD NCEstablished Series
TAXONOMIC CLASS: Fine, kaolinitic, thermic Typic Kanhapludults
TYPICAL PEDON: Nanford silt loam-mixed hardwood forest (Colors are for moist soil)
A--0 to 6 inches, brown (10YR 5/3) silt loam; weak fine granular structure; friable; many fine and medium roots; very strongly acid; abrupt smooth boundary. (0 to 8 inches thick)
Bt1--6 to 18 inches, yellowish red (5YR 5/8) silty clay; weak medium subangular blocky structure; friable, slightly plastic; slightly sticky; common fine and medium roots; common distinct clay films on faces of peds; very strongly acid; clear smooth boundary.
Bt2--18 to 31 inches, yellowish red (5YR 5/8) silty clay; common fine prominent brownish yellow (10YR 6/6) and common medium distinct red (2.5YR 4/8) mottles; moderate fine subangular blocky structure; firm, slightly plastic, slightly sticky; common fine roots; many prominent clay films on faces of peds; very strongly acid; clear smooth boundary. (Combined thickness of the Bt horizons is 20 to 50 inches thick)
BC--31 to 41 inches, red (2.5YR 4/8) silty clay loam; many medium prominent brownish yellow (10YR 6/6) mottles; weak coarse subangular blocky structure; firm, slightly plastic, slightly sticky; common fine roots; very strongly acid; clear smooth boundary. (0 to 20 inches thick)
C--41 to 56 inches, mottled reddish brown (2.5YR 5/4), red (2.5YR 4/8) and brownish yellow (10YR 6/6) silt loam saprolite; massive; friable; very strongly acid; clear wavy boundary (0 to 20 inches thick)
Cr--56 to 62 inches, weathered, partially consolidated fractured argillite.
TYPE LOCATION: Anson County, North Carolina; 6 miles south of Wadesboro on North Carolina Highway 109; 1 mile east on Secondary Road 1118; 200 feet south on Secondary Road 1116; 900 feet west of road in hardwood forest. Mt. Croghan USGS topographic quadrangle.
RANGE IN CHARACTERISTICS: Solum thickness ranges from 25 to 50 inches. Depth to soft bedrock ranges from 40 to 60 inches. Depth to hard bedrock is more than 60 inches. Rock fragments range from 0 to 35 percent in the A, Ap, E, and Bt horizons, and 0 to 40 percent in the BC and C horizons. The solum is very strongly acid or strongly acid unless limed.
The Ap horizon, where present, has hue of 7.5YR or 10YR, value of 4 or 5, and chroma of 2 to 6. It is loam, silt loam, very fine sandy loam, or fine sandy loam and eroded areas may be silty clay loam or clay loam in the fine-earth fraction.
The A horizon has hue of 7.5YR or 10YR and value of 2 to 5, and chroma of 2 to 6. Value of 2 or 3 is limited to horizons less than 6 inches thick. It is loam, silt loam, very fine sandy loam, or fine sandy loam, and eroded areas include silty clay loam or clay loam in the fine-earth fraction.
The E horizon, where present, has hue of 7.5YR or 10YR, value of 4 to 6, and chroma of 2 to 6. It is loam, silt loam or fine sandy loam in the fine-earth fraction .
The Bt horizon has hue of 5YR to 10YR, value of 4 to 6, and chroma of 4 to 8. Mottles in shades of red, brown, or yellow may occur. Texture is silty clay, clay, silty clay loam, and clay loam in the fine-earth fraction with from 35 to 60 percent clay and more than 30 percent silt, or more than 40 percent silt plus very fine sand.
The BC horizon has hue of 2.5YR to 10YR, value of 4 to 6, and chroma of 4 to 8, or is mottled in shades of these colors. Texture is silt loam, loam, silty clay loam or clay loam in the fine-earth fraction.
The C horizon is multicolored in shades of brown, red, yellow, gray, or white. It is silt loam, loam, or silty clay loam saprolite in the fine-earth fraction.
The Cr horizon is weathered, slightly fractured to highly fractured fine-grained metavolcanic rock.
COMPETING SERIES: These are Brockroad, Catharpin, Georgeville, Herndon, and Tarrus series in the same family and the Nason and Tatum series in a closely related family. Brockroad and Catharpan soils have a lithologic discontinuity within the series control section. Georgeville and Herndon soils do not have a paralithic contact within 60 inches. Tarrus soils have Bt horizons with hue of 10R or 2.5YR. Nason and Tatum soils have mixed mineralogy and formed predominantly in sericite schist.
GEOGRAPHIC SETTING: Nanford soils are on nearly level to steep uplands. Slope gradients are commonly between 2 and 15 percent, but the extreme range is 0 to 50 percent. The soils formed in residuum weathered from phyllites, slates and other fine grained rocks of the Carolina Slate Belt. The mean annual temperature ranges from 57 to 64 degrees F., and the average annual precipitation ranges from 40 to 50 inches. Length of growing season ranges from 195 to 240 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Georgeville, Herndon, and Tarrus soils listed as competing series, and the Alamance, Badin, Cid, Goldston, Gundy, Kirksey, Lignum, and Orange series. Alamance and Kirksey soils have less than 35 percent clay in the Bt horizon. Badin soils have mixed mineralogy and a depth to paralithic contact of 20 to 40 inches. Cid and Lignum soils have iron depletions in the upper 10 inches of the Bt horizons. Gundy soils have a base saturation of greater than 35 percent. Goldston soils have a paralithic contact at less than 20 inches. Orange soils have a smectitic mineralogy and have a base sturation greater than 35 percent.
DRAINAGE AND PERMEABILITY: Well drained; medium to rapid runoff; moderate permeability.
USE AND VEGETATION: About 75 percent of the soil is in mixed hardwood and pine. Cleared areas are used largely for growing corn, small grain, soybeans, mixed hay, and pasture.
DISTRIBUTION AND EXTENT: Mainly in the thermic piedmont regions of the Carolina Slate Belt. The series is of moderate extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Raleigh, North Carolina
SERIES ESTABLISHED: Anson County, North Carolina, 1999.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - the zone from 0 to 6 inches (A horizon)
Argillic horizon - the zone from 6 to 31 inches (Bt horizons)
Paralithic contact at 56 inches.
MLRA = 136
ADDITIONAL DATA: None
TABULAR SERIES DATA:
SOI-5 Soil Name Slope Airtemp FrFr/Seas Precip Elevation NC0000 NANFORD 0- 50 57- 64 195-240 40- 50 250- 900 NC0000 NANFORD 0- 45 57- 64 195-240 40- 50 250- 900SOI-5 FloodL FloodH Watertable Kind Months Bedrock Hardness NC0000 NONE 6.0-6.0 - 40-60 SOFT NC0000 NONE 6.0-6.0 - 40-60 SOFT
SOI-5 Depth Texture 3-Inch No-10 Clay% -CEC- NC0000 0- 6 L SIL 0- 5 75-100 10-27 - NC0000 0- 6 VFSL FSL 0- 5 65-100 5-20 - NC0000 0- 6 SICL CL 0- 5 75-100 27-40 - NC0000 6-41 SICL SIC C 0- 5 75-100 35-50 - NC0000 41-56 SIL L 0- 5 45- 75 10-25 - NC0000 56-62 WB - - - - NC0000 0- 6 GR-L GR-SIL GR-FSL 0- 10 55- 75 6-12 - NC0000 0- 6 GR-SICL 0- 10 55- 75 28-35 - NC0000 6-41 SICL SIC C 0- 5 75-100 28-53 - NC0000 41-56 SIL SICL 0- 5 50- 75 10-35 - NC0000 56-62 WB - - - -
SOI-5 Depth -pH- O.M. Salin Permeab Shnk-Swll NC0000 0- 6 4.5- 6.5 1.-3. 0- 0 0.6- 2.0 LOW NC0000 0- 6 4.5- 6.5 1.-3. 0- 0 0.6- 2.0 LOW NC0000 0- 6 4.5- 6.5 1.-3. 0- 0 0.6- 2.0 LOW NC0000 6-41 4.5- 5.5 0.-.5 0- 0 0.6- 2.0 LOW NC0000 41-56 4.5- 5.5 0.-.5 0- 0 0.6- 2.0 LOW NC0000 56-62 - - - 0.00-0.06 NC0000 0- 6 4.5- 6.5 2.-5. 0- 0 0.6- 2.0 LOW NC0000 0- 6 4.5- 6.5 2.-5. 0- 0 0.6- 2.0 LOW NC0000 6-41 4.5- 5.5 0.-.5 0- 0 0.6- 2.0 LOW NC0000 41-56 4.5- 5.5 0.-.5 0- 0 0.6- 2.0 LOW NC0000 56-62 - - - 0.00-0.06