LOCATION DELILA VAEstablished Series
TAXONOMIC CLASS: Fine, mixed, active, mesic Typic Endoaquults
TYPICAL PEDON: Delila sandy loam, 0 to 4 percent slopes, in planted loblolly pine. (Colors are for moist soil unless otherwise indicated.)
A--0 to 8 inches (0 to 20 cm), grayish brown (10YR 5/2) sandy loam; moderate fine and medium granular structure; very friable; non-sticky; non-plastic; common very fine, fine, and medium roots; strongly acid; clear smooth boundary. (4 to 10 inches thick)
Btg1--8 to 21 inches (20 to 53 cm), gray (10YR 6/1) clay; moderate medium subangular blocky structure; very firm; moderately sticky; moderately plastic; few very fine and fine roots; common fine prominent yellowish brown (10YR 5/8) soft masses of iron accumulation; very strongly acid; gradual wavy boundary.
Btg2--21 to 38 inches (53 to 96 cm), gray (10YR 6/1) clay; moderate medium subangular blocky structure; very firm, moderately sticky; moderately plastic; few very fine and fine roots; common fine prominent yellowish brown 10YR 5/8) soft masses of iron accumulation; common very fine and fine flakes of mica; very strongly acid; gradual wavy boundary. (Combined thickness of the Btg horizon is 20 to 50 inches.)
Cg--38 to 65 inches (96 to 165 cm), gray (10YR 6/1) sandy loam; massive; very friable, non-sticky, non-plastic; few fine prominent yellowish brown (10YR 5/8) soft masses of iron accumulation; common very fine and fine flakes of mica; strongly acid.
TYPE LOCATION: Halifax County, Virginia; about 5,000 feet north of the intersection of State Routes 658 and 692; near Delila in planted loblolly pine; USGS Oak Level, Virginia topographic quadrangle; lat. 36 degrees 38 minutes 41 seconds N. and long. 79 degrees 03 minutes 56 seconds W., NAD 27.
RANGE IN CHARACTERISTICS:
Depth to top of Argillic horizon: 4 to 10 inches
Depth to base of Argillic horizon: Greater than 30 inches
Thickness of clayey part of Argillic horizon: 20 inches or more
Depth to Bedrock: Greater than 60 inches
Depth to Seasonal High Water Table: 0 to 12 inches, November to May
Rock Fragment content: 0 to 15 percent, by volume throughout the soil profile
Mica content: Few to common flakes of mica in the B and C horizons
Soil Reaction: Very strongly acid or strongly acid throughout the profile, unless limed
Other features: Linear extensibility percentage (LEP) of the heaviest textured subsurface horizon is 3 to 6 (moderate shrink-swell potential).
RANGE OF INDIVIDUAL HORIZONS:
A or Ap horizon:
Color--hue of 10YR to 5Y, value of 2 to 6, chroma of 1 or 2, or is neutral with value of 3 to 7
Texture--sandy loam, fine sandy loam, loam, or silt loam
Redoximorphic features (if they occur)--iron masses in shades of red, yellow, or brown and iron depletions in shades of brown, yellow, or gray
Eg horizon (if it occurs):
Color--hue of 10YR to 5Y, value of 4 to 6, chroma of 1 or 2, or is neutral with value of 3 to 7
Texture--sandy loam, fine sandy loam, loam, or silt loam
Redoximorphic features (if they occur)--iron masses in shades of red, yellow, or brown and iron depletions in shades of brown, yellow, or gray
Btg horizons:
Color--hue of 10YR to 5Y, value of 5 or 6, chroma of 1 or 2, or is neutral with value of 4 to 7
Texture--sandy clay, clay, or clay loam
Redoximorphic features (if they occur)--iron masses in shades of red, yellow, or brown and iron depletions in shades of brown, yellow, or gray
BCg horizon or BCtg horizon (if it occurs):
Color--hue of 10YR or 2.5Y, value of 4 to 7, chroma of 1 or 2, or is neutral with value of 4 to 7
Texture--loam, sandy clay loam, or clay loam
Redoximorphic features (if they occur)--iron masses in shades of red, yellow, or brown and iron depletions in shades of brown, yellow, or gray
Cg horizon:
Color--hue of 10YR to 5Y, value of 4 to 7, chroma of 1 or 2, or is neutral with value of 4 to 7
Texture--sandy loam, sandy clay loam, or clay loam
Redoximorphic features--iron masses in shades of red, yellow, or brown and iron depletions in shades of brown, yellow, or gray
COMPETING SERIES:
Armagh soils--formed in residuum weathered from acid gray shale; on ridges and benches primarily in the Appalachian Plateau of western Pennsylvania and western Maryland
Kinkora soils--formed in old, clayey alluvial sediments derived from mixed crystalline rock; on terraces in the northern
Piedmont Plateau
Purdy soils--formed in old, clayey alluvial sediments derived from mixed sedimentary rocks; on terraces primarily in the
Ridge and Valley province
Lenni soils--formed in clayey eolian deposits underlain by sandy (fluviomarine) deposits; on broad interstream divides, and in shallow depressions primarily in the northern Coastal Plain
GEOGRAPHIC SETTING:
Landscape: Piedmont, upland
Landform: Ridges and swales
Hillslope Profile Position: Toeslopes
Geomorphic Component: Interfluves
Parent Material: Local alluvium weathered from felsic igneous and metamorphic rocks
Elevation: 350 to 1,000 feet
Mean Annual Air Temperature: 52 to 57 degrees
Mean Annual Precipitation: 40 to 50 inches
Frost Free Period: 165 to 200 days
GEOGRAPHICALLY ASSOCIATED SOILS:
Clifford soils--formed in residuum form felsic crystalline rocks, have a red subsoil, and have a seasonal high water table at a depth of more than 72 inches (well drained); on higher lying landforms
Fairview soils--formed in residuum form felsic crystalline rocks, have a re4d subsoil, and have a seasonal high water table at a depth of more than 72 inches (well drained); on higher lying landforms
Halifax soils--formed in residuum weathered from a mixture of felsic, intermediate, or mafic igneous or high-grade metamorphic rocks and have a perched seasonal high water table at a depth of 18 to 30 inches (moderately well drained); on higher lying landforms
Jackland soils--formed in residuum weathered from diabase and basalt, have very high shrink-swell potential, and are moderately well to somewhat poorly drained; on higher lying landforms
Nathalie soils--formed in residuum form felsic crystalline rocks and have a seasonal high water table at a depth of more than 72 inches (well drained); on higher lying landforms
Orange soils--formed in residuum from basic rocks or mixed acid and basic, are 40 to 60 inches to paralithic contact, have high shrink-swell potential, and have a seasonal high water table at a depth of 12 to 36 inches (moderately well to somewhat poorly drained); on higher lying
Piedmont uplands
Rasalo soils--formed in residuum from hornblende gneiss, gabbro, or other mafic rock, have high shrink-swell potential, and have a seasonal high water table greater than 72 inches (well drained); on higher lying Piedmont uplands
Toast soils--formed in residuum form felsic crystalline rocks and have a seasonal high water table at a depth of more than 72 inches (well drained); on higher lying landforms
Turbeville soils--formed in old alluvial/colluvial soils and have a seasonal high water table greater than 72 inches (well drained); on higher lying Piedmont uplands
DRAINAGE AND PERMEABILITY:
Drainage class (Agricultural): Poorly drained
Index Surface Runoff: Negligible
Internal Free Water Occurrence: Shallow, common
Permeability: Slow
USE AND VEGETATION:
Major Uses: Idle land and pasture
Dominant Vegetation: Where wooded--sweetgum and loblolly pine
DISTRIBUTION AND EXTENT:
Distribution: Virginia and North Carolina
Extent: Small
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Raleigh, North Carolina
SERIES ESTABLISHED: Halifax County, Virginia, 2004.
REMARKS: Delila soils were previously mapped as Worsham soils. The creation of a mesic region within the southern Piedmont necessitated a new series be established as a counterpart to the Worsham series.
Diagnostic horizons and soil characteristics recognized in this pedon:
Ochric epipedon--the zone from 0 to 8 inches (Ap horizon)
Aquic conditions--periodic saturation and reduction in a zone from 10 to 60 inches at some time during the year.
Argillic horizon--the zone from 8 to 38 inches ( Btg horizons)
Other soil features identified with this pedon:
Series control section--the zone from 0 to 60 inches
ADDITIONAL DATA:
Laboratory Data: No laboratory data available.
Database Information: Typical Pedon Data mapunit ID-422831