LOCATION EASTHAMLET VAEstablished Series
TAXONOMIC CLASS: Fine, mixed, active, mesic Aquertic Chromic Hapludalfs
TYPICAL PEDON: Easthamlet sandy loam (in an area of Wolftrap-Easthamlet complex, 2 to 8 percent slopes), in a cultivated field. (Colors are for moist soil, unless otherwise indicated.)
Ap--0 to 5 inches; yellowish brown (10YR 5/4) sandy loam, light yellowish brown (10YR 6/4), dry; moderate medium granular structure; friable, nonsticky, nonplastic; common fine and medium roots; strongly acid; abrupt smooth boundary. (2 to 10 inches thick.)
Btss1--5 to 16 inches; yellowish brown (10YR 5/6) clay; weak coarse prismatic structure parting to moderate medium angular blocky structure; extremely firm, very sticky, very plastic; few fine roots; common nonintersecting slickensides; common distinct clay films on faces of peds; common fine prominent pale brown(10YR 6/3) iron depletions and many fine prominent red (10R 4/6) masses of oxidized iron; very strongly acid; gradual wavy boundary.
Btss2--16 to 24 inches; yellowish red (5YR 5/6) clay; weak coarse prismatic structure parting to moderate medium angular blocky structure; extremely firm, very sticky, very plastic; few fine roots; common nonintersecting slickensides; common distinct clay films on faces of peds; common fine prominent light brownish gray (10YR 6/2) iron depletions and few fine prominent red (10R 4/6) masses of oxidized iron; very strongly acid; clear smooth boundary. (Combined thickness of the Btss horizon is 15 to 30 inches.)
Bt--24 to 30 inches; reddish brown (2.5YR 5/3) clay; moderate medium subangular blocky structure; very firm, sticky, plastic; few faint clay films on faces of peds; common medium prominent light gray (10YR 7/2) iron depletions; very strongly acid; gradual wavy boundary. (0 to 15 inches thick.)
Cr--30 to 41 inches; sandstone bedrock; moderately cemented; high excavation difficulty; abrupt smooth boundary. (5 to 20 inches or more thick)
R--41 inches; sandstone bedrock; strongly cemented; very high excavation difficulty.
TYPE LOCATION: Halifax County, Virginia; 4,500 feet northeast of intersection of State Route 724 and 344, 250 feet south of State Route 724, about 1.0 mile north of Scottsburg, in a field; USGS (Unknown) topographic quadrangle; lat. 35 degrees 46 minutes 06 seconds N. and long. 78 degrees, 47 minutes 08 seconds W.
RANGE IN CHARACTERISTICS:
Depth to top of Argillic horizon: 5 to 15 inches
Depth to base of Argillic horizon: 20 to 40 inches
Depth to Bedrock: 20 to 40 inches to soft bedrock (paralithic contact) and 40 to 60 inches or more to hard bedrock
Depth to Seasonal High Water Table: 6 to 18 inches, December to March
Rock Fragment Content: 0 to 10 percent, by volume, throughout
Soil Reaction: Extremely acid to strongly acid throughout, unless limed
Other Soil Features: Nonintersecting slickensides range from 5 to 50 percent in the Btss horizon
Exchangeable Aluminum Content: 10 to 25 milliequivalents per 100 grams of soil in the Btss horizon
RANGE OF INDIVIDUAL HORIZONS:
Ap horizon or A horizon (if it occurs):
Color--hue of 5YR to 10YR, value of 4 to 6, chroma of 2 to 4
Texture--sandy loam, fine sandy loam, loam, or silt loam. Eroded phases include sandy clay loam, clay loam, or silty clay loam.
E horizon (if it occurs):
Color--hue of 5YR to 10YR, value of 4 to 6, chroma of 3 to 6
Texture--sandy loam, fine sandy loam, loam, or silt loam
Btss horizon:
Color--hue of 2.5YR to 10YR, value of 3 to 6, chroma of 3 to 8
Texture--clay, silty clay, or sandy clay
Redoximorphic features--iron depletions in shades of brown, yellow, olive, or gray and masses of oxidized iron, in shades of red, yellow, or brown
Bt horizon:
Color--hue of 2.5YR to 10YR, value of 3 to 6, chroma of 3 to 8
Texture--clay, silty clay, or sandy clay
Redoximorphic features--iron depletions in shades of brown, yellow, olive, or gray and masses of oxidized iron, in shades of red, yellow, or brown
BC horizon (if it occurs)
Color--hue of 2.5YR to 10YR, value of 3 to 6, chroma of 3 to 8
Texture--silty clay loam, clay loam, or sandy clay loam
Redoximorphic features (if they occur)--iron depletions in shades of brown, yellow, olive, or gray and masses of oxidized iron, in shades of red, yellow, or brown
C horizon (if it occurs):
Color--hue of 2.5YR to 2.5Y, value of 3 to 7, chroma of 2 to 8
Texture--variable, ranging from sandy loam to clay
Redoximorphic features--iron depletions in shades of brown, yellow, olive, or gray and masses of oxidized iron, in shades of red, yellow, or brown
Cr horizon:
Bedrock kind--siltstone, mudstone, shale, or sandstone
Bedrock hardness--extremely weakly cemented to moderately cemented
Fracture interval--greater than 4 inches
Excavation difficulty--low to high
R horizon:
Bedrock kind--mudstone, shale, or sandstone
Bedrock hardness--strongly cemented to indurated
Fracture interval--greater than 4 inches
Excavation difficulty--very high or extremely high
COMPETING SERIES: There are no known series in the same family.
GEOGRAPHIC SETTING:
Landscape: Piedmont basin
Landform: Low hill
Geomorphic Component: Interfluve, side slope, head slope, nose slope
Hillslope Profile Position: Summit, shoulder, footslope
Parent Material: Residuum from Triassic age materials in basins within the West Central Southern Piedmont
Slope: 2 to 25 percent
Elevation: 300 to 850 feet
Frost Free Period: 160 to 205 days
Mean Annual Air Temperature: 52 to 57 degrees F.
Mean Annual Precipitation: 40 to 55 inches
GEOGRAPHICALLY ASSOCIATED SOILS:
Ayersville soils--are moderately deep (20 to 40 inches) to soft and hard bedrock and have a fine-loamy particle-size class; on higher landforms
Clover soils--are very deep to bedrock, have moderate shrink-swell potential, and are well drained; on higher landforms
Lackstown soils--are moderately well to somewhat poorly drained; on similar landforms
Pinkston soils--have a coarse-loamy particle-size class and are moderately deep to bedrock; on higher landforms
Rockbarn soils--are moderately deep (20 to 40 inches) to soft bedrock and deep or very deep (40 inches or more) to hard bedrock; on higher landforms
Stoneville soils--are deep (40 to 60 inches) to soft bedrock; on higher landforms
Straightstone soils--are very deep to bedrock and are well drained; on higher landforms
Wolftrap soils--have very high shrink-swell potential and are moderately well drained; on lower-lying landforms
DRAINAGE AND PERMEABILITY:
Depth Class: Moderately deep (20 to 40 inches) to soft bedrock and deep or very deep (greater than 40 inches) to hard bedrock
Drainage Class (Agricultural): Somewhat poorly drained
Internal Free Water Occurrence: Very shallow or shallow (less than 20 inches), common (present 3 to 6 months), very thin or thin (4 to 40 inches thick)
Flooding Frequency and Duration: None
Ponding Frequency and Duration: None
Index Surface Runoff: Very high
Permeability: Very slow
Shrink-Swell Potential: Very high
USE AND VEGETATION:
Major Uses: About 20 percent of these soils are used for crops and pasture, and the rest is mainly in forests of hardwoods and pine.
Dominant Vegetation: Where cultivated--corn, small grain, and hay. Where wooded--shortleaf pine, sweetgum, red oak, willow oak, and white oak. Understory plants include eastern red cedar, flowering dogwood, winged elm, eastern hophornbeam, eastern redbud, greenbrier, sassafras, honeysuckle, and poison ivy.
DISTRIBUTION AND EXTENT:
Distribution: Triassic Basins of the mesic Southern Piedmont of Virginia and North Carolina.
Extent: Small
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Raleigh, North Carolina
SERIES ESTABLISHED: Halifax County, Virginia, 2003.
REMARKS: The Easthamlet soils were previously mapped with the Polkton series. The April 1997 relocation of the mesic/thermic soil temperature regime boundary necessitated the establishment of the Easthamlet series.
Diagnostic horizons and soil characteristics recognized in this pedon:
Ochric epipedon--the zone from the soil surface to a depth of 5 inches (Ap horizon)
Argillic horizon--the zone from 5 to 30 inches below the surface (Btss1, Btss2 and Bt3 horizons)
Slickensides--presence of slickensides in the zone from 5 to 24 inches (Btss1 and Btss2 horizons)
Paralithic contact--bedrock contact at a depth of 30 inches (upper boundary of the Cr horizon)
Other soil features identified with this pedon:
Linear extensibility--total of 6.0 centimeters or more between the mineral soil surface and paralithic contact
Base saturation by sum of cations--increases with depth and ranges from 35 to 60 percent immediately above the paralithic contact
Presence of hard bedrock at 41 inches (R horizon)
Series control section--the zone from 0 to 40 inches
ADDITIONAL DATA:
Laboratory Data: No laboratory data available.
Typical Pedon Data Mapunit ID--103385
TABULAR SERIES DATA:
SOI-5 Soil Name Slope Airtemp FrFr/Seas Precip Elevation NC0285 EASTHAMLET 2-25 52-57 160-205 40-55 300-850 NC0287 EASTHAMLET 2-25 52-57 160-205 40-55 300-850SOI-5 FloodL FloodH Watertable Kind Months Bedrock Hardness NC0285 NONE 1.0-1.5 PERCHED DEC-MAR 20-40 SOFT NC0287 NONE 1.0-1.5 PERCHED DEC-MAR 20-40 SOFT
SOI-5 Depth Texture 3-Inch No-10 Clay% -CEC- NC0285 0-5 FSL SL 0-3 95-100 10-20 5-15 NC0285 0-5 L SIL 0-3 95-100 7-27 5-15 NC0285 5-24 C SC SIC 0-3 90-100 35-70 20-40 NC0285 24-30 CL SCL SICL C 0-3 95-100 20-40 10-25 NC0285 30-41 WB - - - - NC0285 41 UWB - - - -
NC0287 0-5 C 0-3 95-100 40-45 10-25 NC0287 0-5 SCL CL SICL 0-3 95-100 27-40 5-15 NC0287 5-24 C SC SIC 0-3 90-100 35-70 20-40 NC0287 24-30 CL SCL SICL 0-3 95-100 20-40 10-25 NC0287 30-41 WB - - - - NC0287 41 UWB - - - -
SOI-5 Depth -pH- O.M. Salin Permeab Shnk-Swll NC0285 0-5 3.5-5.5 .5-2. 0-0 0.6-2.0 LOW NC0285 0-5 3.5-5.5 .5-2. 0-0 0.6-2.0 LOW NC0285 5-24 3.5-5.5 0.-.5 0-0 0.0-0.06 VERY HIGH NC0285 24-30 3.5-5.5 0.-.5 0-0 0.06-0.6 HIGH NC0285 30-41 - - - 0.00-0.06 NC0285 41 - - - 0.00-0.01
NC0287 0-5 4.5-6.5 .1-.5 0-0 0.06-0.2 HIGH NC0287 0-5 4.5-6.5 .2-1. 0-0 0.2-0.6 MODERATE NC0287 5-24 4.5-5.5 0.-.5 0-0 0.0-0.06 VERY HIGH NC0287 24-30 4.5-5.5 0.-.5 0-0 0.06-0.6 HIGH NC0287 30-41 - - - 0.00-0.06 NC0287 41 - - - 0.00-0.01