LOCATION EDGEHILL VA
Established Series
Rev. DDR; DTA
09/2021
EDGEHILL SERIES
Soils of the Edgehill series are deep and well drained. Permeability is moderate. They formed in old, very gravelly alluvium on dissected ridge and sideslope positions of high stream terraces. Slopes range from 0 to 35 percent. Mean annual precipitation is about 42 inches and mean annual temperature is about 60 degrees F.
TAXONOMIC CLASS: Clayey-skeletal, mixed, semiactive, thermic Typic Hapludults
TYPICAL PEDON: Edgehill very gravelly fine sandy loam. (Colors are for moist soils.)
Oi--0 to 3 inches, partially decomposed loose leaves and twigs.
A--3 to 5 inches, dark grayish brown (10YR 4/2) very gravelly fine sandy loam; weak very fine and fine granular structure; very friable; many fine roots; 50 percent rounded gravel and 5 percent cobblestones; very strongly acid; abrupt smooth boundary. (2 to 4 inches thick)
E--5 to 20 inches, pale brown (10YR 6/3) very gravelly fine sandy loam; weak very fine and fine granular structure; very friable; common fine and medium roots; 50 percent rounded gravel and 2 percent cobblestones; very strongly acid; clear smooth boundary. (8 to 15 inches thick)
BEt--20 to 23 inches, strong brown (7.5YR 5/6) very gravelly clay loam; weak fine and medium subangular blocky structure; firm, slightly sticky, slightly plastic; few fine and medium roots; 50 percent rounded gravel; 2 percent cobblestones; very strongly acid; clear wavy boundary. (0 to 5 inches thick)
Bt--23 to 44 inches, red (2.5YR 4/6) very gravelly clay; weak fine subangular blocky structure; firm, hard, sticky and plastic; few fine roots; 40 percent rounded gravel and 8 percent cobblestones; gravel and cobblestones vary greatly in degree of weathering; few distinct and prominent clay films are evident on faces of peds and rock fragments; very strongly acid; gradual wavy boundary. (15 to 40 inches thick)
C--44 to 80 inches, mottled strong brown (7.5YR 5/6), yellowish red (5YR 5/6), red (2.5YR 4/6) and yellowish brown (10YR 5/6) extremely gravelly sandy loam with pockets of sandy clay loam to clay; massive and compact in place; friable or firm, slightly sticky and slightly plastic; few fine roots; 65 percent rounded gravel and cobblestones; very strongly acid.
TYPE LOCATION: Chesterfield County, Virginia; 1/2 mile west of Old Gun Road, 1/2 mile north of Robious Road, south of the James River on a wooded ridge.
RANGE IN CHARACTERISTICS: Solum thickness is 30 to 60 or more inches. Depth to bedrock is more than 60 inches. Clay content in the control section ranges from 35 to 55 percent. Coarse fragments in the control section exceed 35 percent and range to about 70 percent. These consist of rounded quartz, quartzite and gneiss gravel and cobblestones. Few to common flakes of mica are in
some pedons. The soil is very strongly acid or strongly acid, unless limed.
The A horizon has hue of 10YR, value of 3 through 5 and chroma of 1 through 3. The Ap horizon, where present, has hue of 10YR, value of 4 or 5 and chroma of 3 through 6. The A horizon is fine sandy loam or sandy loam in the fine earth fraction.
The E horizon has hue of 10YR or 2.5Y, value of 5 or 6 and chroma of 3 through 5. It is sandy loam or fine sandy loam in the fine earth fraction.
The BE horizon has hue of 5YR through 10YR, value of 4 through 6 and chroma of 4 through 8. It is clay loam or sandy clay loam in the fine earth fraction.
The Bt horizon has hue of 2.5YR through 10YR, value of 3 through 6 and chroma of 4 through 8. The lower Bt horizon includes hue of 10R. It is clay loam or clay in the fine earth fraction.
The BC horizon if present is similar in color to the Bt horizon. It is sandy clay loam or clay loam in the fine earth fraction.
The C horizon is highly variable with regard to color, texture and rock fragment content.
COMPETING SERIES: The
Honobia series is the only series in the same family. The
Conotton,
Lillington, and
Saffell series are in related families. Honobia soils are dominated with shale fragments and the solum thickness and depth to bedrock ranges from 20 to 40 inches. All the related soils have less than 35 percent clay in the control section. In addition, Conotton soils have base saturation of more than 35 percent; and the Lillington, and Saffell soils have siliceous mineralogy.
GEOGRAPHIC SETTING: The Edgehill soils are on highly dissected ridge and side slope positions of old, high stream terraces. Slopes range from 0 to 35 percent. They developed in old, very gravelly alluvium. The mean annual temperature ranges from 59 to 65 degrees F and the mean annual precipitation ranges from 40 to 46 inches.
GEOGRAPHICALLY ASSOCIATED SOILS: These include the
Appling,
Augusta,
Cecil,
Hiwassee,
Masada,
Roanoke and
Turbeville soils. The Augusta and Roanoke soils are more poorly drained. The Appling, Cecil, Hiwassee, Masada, and Turbeville soils do not have the high content of rock fragments.
DRAINAGE AND PERMEABILITY: Well drained; medium to very rapid runoff; permeability is moderate.
USE AND VEGETATION: Most areas are wooded or used for pasture. Upland oak and loblolly pine are the dominant trees.
DISTRIBUTION AND EXTENT: Virginia, possibly North Carolina. The series is inextensive.
SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Raleigh, North Carolina
SERIES ESTABLISHED: Chesterfield County, Virginia, 1974.
REMARKS: The 2021 revision changed depths for individual horizons to allow O horizon to be top of pedon
TABULAR SERIES DATA:
SOI-5 Soil Name Slope Airtemp FrFr/Seas Precip Elevation
VA0079 EDGEHILL 0- 35 59- 65 185-220 40- 46 250- 700
VA0111 EDGEHILL 2- 25 59- 65 185-220 40- 46 250- 700
SOI-5 FloodL FloodH Watertable Kind Months Bedrock Hardness
VA0079 NONE 6.0-6.0 - 60-60
VA0111 NONE 6.0-6.0 - 60-60
SOI-5 Depth Texture 3-Inch No-10 Clay% -CEC-
VA0079 0-20 GR-FSL GR-SL 0- 10 50- 70 10-20 -
VA0079 0-20 GRV-FSL GRV-SL 0- 10 20- 55 10-20 -
VA0079 20-44 GRV-C GR-C GRV-CL 0- 15 20- 55 35-55 -
VA0079 44-83 SR GR-SL S 0- 25 15- 85 10-55 -
VA0111 0-18 GRV-SL 0- 5 20- 40 - -
VA0111 18-64 GRV-SCL 0- 5 20- 40 - -
SOI-5 Depth -pH- O.M. Salin Permeab Shnk-Swll
VA0079 0-20 4.5- 6.0 .5-2. 0- 0 0.6- 6.0 LOW
VA0079 0-20 4.5- 6.0 .5-2. 0- 0 0.6- 6.0 LOW
VA0079 20-44 4.5- 5.5 0.-.5 0- 0 0.6- 2.0 MODERATE
VA0079 44-83 4.5- 5.5 0.-.5 0- 0 0.6- 20 MODERATE
VA0111 0-18 4.5- 6.0 .5-2. 0- 0 0.6- 6.0 LOW
VA0111 18-64 4.5- 5.5 0.-.5 0- 0 0.6- 2.0 LOW
National Cooperative Soil Survey
U.S.A.