LOCATION YAUPON NCEstablished Series
TAXONOMIC CLASS: Fine, mixed, semiactive, nonacid, thermic Aquic Udorthents
TYPICAL PEDON: Yaupon silty clay loam.
(Colors are for moist unless otherwise stated).
A1--0 to 7 inches; dark gray (10YR 4/1) silty clay loam, common medium distinct yellowish red (5YR 4/6) mottles; moderate medium platy structure; firm, sticky, plastic, few fine roots; very strongly acid; gradual smooth boundary. (0 to 10 inches thick)
C1g--7 to 20 inches; dark gray (5YR 4/1) silty clay; massive; very firm, very sticky, very plastic; mildly alkaline; gradual smooth boundary. (5 to 20 inches thick)
C2g--20 to 30 inches; dark greenish gray (5GY 4/1) silty clay; common medium distinct dark gray (5Y 4/1) mottles; massive; firm, very sticky, very plastic; few small dark reddish brown (5YR 3/2) concretions; moderately alkaline; gradual smooth boundary. (5 to 10 inches thick)
C3g--30 to 76 inches; dark greenish gray (5GY 4/1) silty clay; massive; firm, very sticky, very plastic; few small dark reddish brown (5YR 3/2) concretions; moderately alkaline; clear smooth boundary. (10 to 50 inches thick)
Ab--76 to 85 inches; black (10YR 2/1) fine sandy loam; weak medium granular structure; very friable; very strongly acid. (0 to 15 inches thick)
TYPE LOCATION: Brunswick County, North Carolina; .1 mile northeast of the Bridge of NC 133 Highway and the Intercoastal Waterway; 0.1 mile south of the intersection of NC 133 Highway and service road.
RANGE IN CHARACTERISTICS: Thickness of the dredge spoil soil material ranges from 20 to more than 80 inches. Shrinkage cracks open at the surface range from 15 to 35 inches apart and are from 2 to 4 inches wide ranging up to 6 or 8 inches in some places, about 30 inches deep, they are commonly filled with fine sand. Reaction range from very strongly acid to medium acid in the surface layer except where limed and from strongly acid to moderately alkaline in the C horizon. Shells and shell fragments range from 0 to 20 percent in individual horizons. The grey color is not indicative of the present drainage but of the condition of the original sediments.
The A1 horizon has hue of 10YR to 5Y, value of 3 to 6, and chroma of 0 to 2. The A horizon is fine sandy loam, loam, silt loam, and silty clay loam.
The C horizon has hue of 10YR to 5G or 5B, value of 4 to 6 and chroma of 1 to 8. The C horizon is sandy clay, clay loam, silty clay, or clay. The 10-to 40-inch control section averages from 35 to 60 percent clay and from 35 to 65 percent silt. The underlying buried horizon is variable in colors and textures.
COMPETING SERIES: There are no recognized competing series in this family.
GEOGRAPHIC SETTING: The Yaupon soils are areas constructed from deposited dredge spoil on the Lower Coastal Plain. The major portion of these areas are generally convex with slopes from 0 to 6 percent with some areas ranging up to 15 percent.
GEOGRAPHICALLY ASSOCIATED SOILS: These are Axis, Bohicket, Bragg, Carteret, Corolla, Duckston, Hobonny, Leon, Muckalee, Murville, Pactolus, and Wando soils. Axis, Bohicket, and Carteret soils are very poorly drained and are flooded daily by tides. Corolla Duckston, Leon, Murville, Pactolus, and Wando soils are sandy. Hobonny soils are organic. Muckalee soils are coarse-loamy.
DRAINAGE AND PERMEABILITY: Somewhat poorly to moderately well drained with soil surface runoff. Permeability is slow to very slow. Perched water can be expected between layers of the sediments. There is an apparent water table at 2.0 to 4.0 feet in the winter and early spring.
USE AND VEGETATION: Most areas consists of idle land. The plant community is loblolly pine, longleaf pine, wax myrtle, black cherry, yaupon, sweetgum, eastern redcedar, live oak, water oak, myrtle oak, poison ivy, and muscadine grape.
DISTRIBUTION AND EXTENT: The Lower Coastal Plain of North Carolina, South Carolina, Georgia, and Florida. The series is of small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Raleigh, North Carolina
SERIES ESTABLISHED: Brunswick County, North Carolina; 1983.
REMARKS: These soils were formerly placed in miscellaneous land types as dredge spoil areas, or were named Udorthents.
TABULAR SERIES DATA:
SOI-5 Soil Name Slope Airtemp FrFr/Seas Precip Elevation NC0144 YAUPON 0- 15 63- 70 230-310 50- 60 3- 15SOI-5 FloodL FloodH Watertable Kind Months Bedrock Hardness NC0144 NONE 2.0-4.0 APPARENT DEC-MAR 60-60
SOI-5 Depth Texture 3-Inch No-10 Clay% -CEC- NC0144 0- 7 FSL 0- 0 90-100 5-20 3- 15 NC0144 0- 7 L SIL SICL 0- 0 90-100 10-35 5- 25 NC0144 7-76 SIC C SC 0- 0 90-100 35-60 15- 40 NC0144 76-85 VAR - - - -
SOI-5 Depth -pH- O.M. Salin Permeab Shnk-Swll NC0144 0- 7 4.5- 6.5 .5-1. 0-16 2.0- 6.0 LOW NC0144 0- 7 4.5- 6.5 .5-1. 0-16 0.06- 0.2 LOW NC0144 7-76 5.6- 8.4 0.-1. 0-16 0.0-0.06 HIGH NC0144 76-85 - - - -