LOCATION FLUVANNA VAEstablished Series
TAXONOMIC CLASS: Fine, mixed, active, thermic Typic Hapludults
TYPICAL PEDON: Fluvanna fine sandy loam, in an area of Fluvanna-Mattaponi complex, 2 to 7 percent slopes (Colors are for moist soil unless otherwise indicated.)
A--0 to 1 inches; very dark grayish brown (10YR 3/2) fine sandy loam; moderate fine granular structure; very friable, nonsticky, nonplastic; many fine and medium roots and many coarse roots; 4 percent subrounded quartz gravel; extremely acid; clear smooth boundary.
E--1 to 5 inches; yellowish brown (10YR 5/4) fine sandy loam; moderate fine granular structure; friable, nonsticky, nonplastic; many fine and medium roots and many coarse roots; 4 percent subrounded quartz gravel; very strongly acid; gradual smooth boundary.
Bt1--5 to 11 inches; strong brown (7.5YR 5/6) clay loam; many medium distinct yellowish brown (10YR 5/4) mottles; moderate medium subangular blocky structure; friable, moderately sticky, moderately plastic; many fine and medium roots and many coarse roots; many prominent continuous clay films on all faces of peds; 2 percent subrounded quartz gravel; extremely acid; gradual smooth boundary.
Bt2--11 to 23 inches; strong brown (7.5YR 5/6) clay; common medium distinct yellowish red (5YR 4/6) mottles; moderate medium subangular blocky structure; friable, moderately sticky, moderately plastic; many fine and medium roots; many prominent continuous clay films on all faces of peds; 1 percent subrounded quartz gravel; very strongly acid; gradual smooth boundary.
Bt3--23 to 44 inches; yellowish red (5YR 5/8) clay; common medium distinct strong brown (7.5YR 5/6) mottles; moderate medium subangular blocky structure; firm, moderately sticky, moderately plastic; many fine and medium roots; many prominent continuous clay films on all faces of peds; very strongly acid; gradual smooth boundary.
Bt4--44 to 55 inches; yellowish red (5YR 5/6) silty clay; many medium distinct dark red (10R 3/6) and many medium distinct brownish yellow (10YR 6/6) mottles; moderate coarse platy parting to moderate medium subangular blocky structure; firm, moderately sticky, moderately plastic; many fine roots; many prominent continuous clay films on all faces of peds; 10 percent subangular phyllite gravel; very strongly acid; diffuse smooth boundary. (Combined thickness of the Bt horizon is 40 to 55 inches)
C1--55 to 70 inches; brownish yellow (10YR 6/6), yellowish red (5YR 4/6), and dark red (10R 3/6) silty clay loam saprolite; massive; friable, moderately sticky, moderately plastic; many fine roots; 10 percent subangular phyllite gravel; very strongly acid; diffuse smooth boundary.
C2--70 to 79 inches; dark red (10R 3/6), black (10YR 2/1), and brownish yellow (10YR 6/6) silty clay loam saprolite; massive; friable, moderately sticky, moderately plastic; 10 percent subangular phyllite gravel; very strongly acid.
TYPE LOCATION: Greensville County, Virginia; about 0.9 mile north of the junction of highways VA-633 and VA-603 and 0.5 mile west of Highway VA-633, about 3 miles southwest of Brink.
RANGE IN CHARACTERISTICS:
Solum thickness: 30 to 60 inches
Depth to Bedrock: Greater than 72 inches
Depth to Seasonal High Water Table: Greater than 60 inches
Rock Fragment Content: 2 to 15 percent percent, by volume, in the A and E horizons; 0 to 10 percent, by volume, in the Bt horizon; 5 to 40 percent, by volume, in the C horizon
Soil Reaction: Very strongly acid or strongly acid, except where limed
RANGE OF INDIVIDUAL HORIZONS:
The A horizon has hue of 7.5YR through 2.5Y, value of 3 through 6
and chroma of 1 through 6. Value of 3 and chroma of 1 is restricted to the Ap horizon. Texture is fine sandy loam, loam, silt loam, silty clay loam, or clay loam.
The E horizon has hue of 7.5YR through 2.5Y, value of 3 through 6
and chroma of 4 through 6. Texture is fine sandy loam, loam, or silt loam.
The Bt horizon has hue of 5YR through 10YR, value of 4 through 6 and chroma of 4 through 8. In some pedons, the lower Bt horizon contains high chroma mottles or is multicolored and does not have a dominant matrix color. Texture is clay, clay loam, silty clay, or silty clay loam with more than 30 percent silt and 35 to 60 percent clay in the particle size control section.
The BC horizon, where present, has hue of 5YR through 10YR, value of 4 through 6 and chroma of 4 through 8 or is mottled in shades of these colors. Texture is silt loam, loam, clay loam, silty clay loam, clay, or gravelly analogues of these textures.
The C horizon colors are highly variable and commonly contain shades of red, brown and yellow. Texture is silty clay loam, clay loam, silt loam, or loam.
COMPETING SERIES:
There are no other series in the same family. The
Badin,
Nason,
Tatum, and
Uwharrie series in closely related families. The Badin soils have a depth to soft bedrock of 20 to 40 inches. The Tatum and Uwharrie soils have hue of 2.5YR or redder. In addition, Tatum soils have a depth to soft bedrock of 40 to 60 inches. Nason soils have a depth to soft bedrock of 40 to 60 inches.
GEOGRAPHIC SETTING:
Landscape: Piedmont
Landform: Uplands
Geomorphic Component: Interfluves
Parent Material: Mixed basic and acidic crystalline rock
Slope: 0 to 25 percent
GEOGRAPHICALLY ASSOCIATED SOILS:
In addition to the closely associated
Badin,
Nason,
Tatum, and
Uwharrie soils, these are the
Cullen soils. Cullen soils have hue of 2.5YR or redder.
DRAINAGE AND PERMEABILITY:
Drainage Class (Agricultural): Well drained
Permeability: Moderately slow
Shrink-Swell Potential: Moderate
USE AND VEGETATION:
Most of these soils are wooded. Vegetation consists mostly of second growth oaks, poplar, shortleaf and Virginia pines, dogwood, red cedar, hickory, and sweetgum. Some of these soils are cultivated or in pasture. Crops grown are corn, small grain, and mixed hay
DISTRIBUTION AND EXTENT:
Distribution: Virginia and possibly North Carolina.
Extent: This series is of small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Raleigh, North Carolina
SERIES ESTABLISHED: Fluvanna County, VA, 1949.
REMARKS: This series type location was originally in Louisa County, Virginia which is now a mesic temperature regime area. It was reclassified to mesic family 2001. The distribution of the series has more acreage in the thermic temperature regime, therefore it is now thermic (2007). The soils in the thermic area are also very deep to soft bedrock.
Diagnostic horizons and soil characteristics recognized in this pedon:
Ochric epipedon--the zone from 0 to 1 inches (A horizon)
Argillic horizon--the zone from 5 to 55 inches (Bt horizons)
ADDITIONAL DATA: (VPI&SU Publication)
Data Map Unit ID (type Location): 89076
TABULAR SERIES DATA:
SOI-5 Soil Name Slope Airtemp Frfr/Seas Precip Elevation
VA0007 FLUVANNA 0- 25 45- 70 180-220 35- 50 250- 700
SOI-5 FloodL FloodH Watertable Kind Months Bedrock Hardness VA0007 NONE 6.0-6.0 - 60-60SOI-5 Depth Texture 3-Inch No-10 Clay% -CEC- VA0007 0- 9 FSL L SIL 0- 0 80-100 5-27 - VA0007 0- 9 SICL CL 0- 0 80-100 27-40 - VA0007 9-46 C SIC SICL 0- 0 95-100 35-65 - VA0007 46-60 CL SICL GR-CL 0- 5 45-100 20-40 -
SOI-5 Depth -pH- O.M. Salin Permeab Shnk-Swll VA0007 0- 9 4.5- 5.5 1.-3. 0- 0 2.0- 6.0 LOW VA0007 0- 9 4.5- 5.5 .5-2. 0- 0 0.6- 2.0 MODERATE VA0007 9-46 4.5- 5.5 0.-.5 0- 0 0.06- 0.6 MODERATE VA0007 46-60 4.5- 5.5 0.-.5 0- 0 0.06- 0.6 MODERATE