LOCATION HATTONTOWN VA
Established Series
DNS/JDH
09/2016
HATTONTOWN SERIES
MLRA(s): 148 (Northern Piedmont)
Depth Class: Very deep
Drainage Class (Agricultural): Well drained to moderately well
Landscape: Piedmont Plateau
Parent Material: residuum weathered from diabase and basalt
Slope: 0 to 25 percent slopes
Mean Annual Air Temperature (type location): 12.4 degrees C. (54 degrees F.)
Mean Annual Precipitation (type location): 1062 mm (42 inches)
TAXONOMIC CLASS: Fine-loamy, mixed, active, nonacid, mesic Typic Udorthents
TYPICAL PEDON: Hattontown silt loam (Colors are for moist soil unless otherwise indicated.)
Ap--0 to 5 cm (0 to 2 inch), dark brown (10YR 3/3) silt; weak fine granular structure; very friable, moderately sticky, moderately plastic; many fine and very fine roots; 5 percent subangular quarzite gravels; moderately acid; abrupt smooth boundary.
AC--5 to 10 cm (2 to 4 inches), olive (5Y 5/3) clay loam; common medium distinct yellowish brown (10YR 5/6) mottles; weak coarse sub-angular blocky structure; firm, moderately sticky, moderately plastic; common very fine and fine roots; 3 percent quartzite gravels; moderately acid; clear smooth boundary.
C1--10 to 41cm (4 to 16 inches), yellowish brown (10YR 5/4) and yellowish brown (10YR 5/6) loam; massive; friable, slightly sticky, moderately plastic; 4 percent subangular quartzite gravels; moderately acid; clear smooth boundary
C2--41 to 114 cm (16 to 45 inches), olive brown (2.5Y 4/3) clay; commone medium distinct yellowish brown (10YR 5/6) mottles; massive; firm, very sticky, very plastic; 9 percent subangular quartzite gravels; moderately acid; abrupt smooth boundary.
C3--114 to 145 cm (45 to 57 inches), dark gray (2.5Y 4/1) clay loam; massive; firm, moderately sticky, moderately plastic; 12 percent subangular quartzite gravels; neutral; clear smooth boundary.
Cg4--145 to 152 cm (57 to 60 inches), light brownish gray (2.5Y 6/2) clay loam; common medium distinct yellowish brown (10YR 5/6) mottles; massive; firm, moderately sticky, moderately plastic; 13 percent subangular quartzite gravel; neutral.
TYPE LOCATION: Fairfax County, Virginia; located in Centreville High School ball field, 120 feet south of the southernmost edge of the high school's parking lot and 160 feet east of Union Mill Road. Latitude 38 degrees, 49 minutes, 23 seconds north, and Longitude 77 degrees, 24 minutes, 45 seconds west.
RANGE IN CHARACTERISTICS:
Depth to Bedrock: Greater than 183 cm (72 inches)
Depth to Seasonal High Water Table: 102cm (40 inches) to Greater than 183 cm (72 inches), November to May
Rock Fragment content: 0 to 35 percent, by volume, throughout.
Soil Reaction: moderately alkaline to strongly acid
Range of Individual Horizons:
A or Ap horizon (if it occurs):
Color--hue of 7.5YR to 10YR, value of 3 to 5, and chroma of 2 to 4
Texture (fine-earth fraction)silt loam, loam, or sandy loam
AC horizon:
Color--hue of 7.5YR to 5Y, value of 3 to 5, and chroma of 2 to 4
Texture (fine-earth fraction)silt loam, loam, or sandy loam
C horizon:
Color--hue of 7.5YR to 2.5Y, value of 4 to 8, and chroma of 1 to 8
Texture (fine-earth fraction)clay, clay loam, silt loam, sandy clay loam,loam, sandy loam, loamy sand, or fine sandy loam
COMPETING SERIES:
Chantilly soils--have as redder hues in the substratum, and are derived from sandstone and shale parent materials.
Wheaton soils--are found on parent materials derived from phyllites, and mica schists.
GEOGRAPHIC SETTING:
Landscape: Piedmont Plateau, Culpeper Triassic Basin
Landform: Uplands
Hillslope Profile Position: Summit, shoulder, and backslopes
Geomorphic Component: interfluves
Parent Material: Residuum weathered from diabase and basalt
Slope: 0 to 25 percent
Frost-free period: 150 to 194 days
Mean Annual Air Temperature: 6.2 to 18.7 degrees C. (43 to 65 degrees F.)
Mean Annual Precipitation: 904 to 1202 mm (37 to 47 inches)
GEOGRAPHICALLY ASSOCIATED SOILS:
Kelly soil--are deep, and somewhat poorly drained
Jackland soils--are deep, and moderately well drained
Haymarket soils--are very deep, and have an Argillic horizon
Elbert soils--have an argillic horizon, and are poorly drained
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class (Agricultural): Well drained to moderately well drained
Internal Free Water Occurrence: Very deep (greater than 150 cm) to moderately deep (highly variable)
Flooding Frequency and Duration: None
Ponding Frequency and Duration: None
Index Surface Runoff: very high to high
Saturated Hydraulic Conductivity: Moderately high to very slow (highly Variable)
Permeability (obsolete): Moderate to slow
Shrink-swell Potential: low to moderate
USE AND VEGETATION:
Major Uses: urban development
Dominant Vegetation: Where wooded--black oak, chestnut oak, red oak, white oak, hickory, yellow popular, red maple, shortleaf pine and Virginia pine.
DISTRIBUTION AND EXTENT:
Distribution: Virginia
Extent: small
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: MORGANTOWN, WEST VIRGINIA
SERIES PROPOSED: Fairfax County, Virginia, 2006.
REMARKS:
2016 Update was to change the status to Established
Diagnostic horizons and soil characteristics recognized in this pedon are:
Ochric epipedon--the zone from 0 to 25 cm (0 to 4 inches) (Ap, and AC horizons)
ADDITIONAL DATA: S04VA059-21-1
OSD Data Map Unit ID: To be developed
Typical Pedon Data Mapunit ID: To be developed
OSD User Pedon ID: Hattontown S04VA059-21-1
National Cooperative Soil Survey
U.S.A.