LOCATION MATTAPEX MD+DE NJ VAEstablished Series
TAXONOMIC CLASS: Fine-silty, mixed, active, mesic Aquic Hapludults
TYPICAL PEDON: Mattapex loam, cultivated. (Colors are for moist soil.)
Ap--0 to 11 inches; dark grayish brown (10YR 4/2) loam; weak medium granular structure; friable; slightly sticky, slightly plastic; many fine and medium roots; moderately acid; gradual smooth boundary. (0 to 12 inches thick)
BE--11 to 15 inches; yellowish brown (10YR 5/6) loam; weak and moderate medium subangular blocky structure; friable; slightly sticky, slightly plastic; common fine and medium fine roots; strongly acid; gradual smooth boundary. (0 to 8 inches thick)
Bt1--15 to 26 inches; yellowish brown (1OYR 5/6) silty clay loam; moderate medium subangular blocky structure; friable; moderately sticky, slightly plastic; few medium roots common faint yellowish brown (1OYR 5/4) clay films on faces of peds; strongly acid; gradual smooth boundary.
Bt2--26 to 36 inches; light olive brown (2.5Y 5/4) silty clay loam; weak medium subangular blocky structure; firm; moderately sticky, slightly plastic; few distinct yellowish brown (10YR 5/6) clay films on faces of peds; common medium distinct strong brown (7.5YR 5/6) iron accumulations and brownish gray (2.5Y 6/2) iron depletions; very strongly acid; clear wavy boundary. (Combined thickness of Bt is 15 to 40 inches.)
2C1--36 to 60 inches; yellowish brown (10YR 5/4) fine sandy loam; massive; friable; nonsticky, slightly plastic; common medium distinct light gray (2.5Y 7/2) iron depletions and strong brown (7.5YR 5/6) iron accumulations; very strongly acid; clear smooth boundary.
2C2--60 to 65 inches; yellowish brown (10YR 5/4) loamy sand; massive; friable; nonsticky, slightly plastic; common medium distinct light gray (2.5Y 7/2) iron depletions and strong brown (7.5YR 5/6) iron accumulations; very strongly acid.
TYPE LOCATION: Queen Anne's County, Maryland; Mattapex Plantation on Kent Island, 0.25 mile west of Route 33.
RANGE IN CHARACTERISTICS:
Solum Thickness: 24 to 48 inches
Depth to Bedrock: Greater than 60 inches
Depth to Seasonal High Water Table: 18 to 36 inches, January to April
Depth to the Lithologic Discontinuity: 30 to 50 inches
Rock Fragments: 0 to 5 percent, by volume throughout the profile. Individual horizons, generally less than 12 inches thick, range to 20 percent
Soil Reaction: Extremely acid to strongly acid, throughout the profile, unless limed
RANGE OF INDIVIDUAL HORIZONS:
A or Ap horizon:
Color--hue of 10YR or 2.5Y, value of 3 to 5, chroma of 1 to 4
Texture--silt loam, loam, or fine sandy loam
E or BE horizon:
Color--hue of 10YR or 2.5Y, value of 5 or 6, chroma of 3 or 4
Texture--silt loam, loam, or fine sandy loam
Redoximorphic Features--iron accumulations in shades of red, brown, yellow, or olive
Bt horizon:
Color--hue of 7.5YR to 2.5Y, value of 5 to 6, chroma of 3 to 8
Texture--silt loam or silty clay loam, with 18 to 30 percent clay and more than 50 percent silt in the particle size control section
Redoximorphic Features--iron depletions in shades of olive, gray, or white and iron accumulations in shades of red, brown, yellow, or olive
Btg horizon (if it occurs):
Color--hue of 10YR or 5Y, value of 5 to 7, chroma of 1 or 2
Texture--silt loam or silty clay loam
Redoximorphic Features--iron depletions in shades of olive, gray, or white and iron accumulations in shades of red, brown, yellow, or olive
2BC horizon (if it occurs):
Color--hue of 10YR or 2.5Y, value of 5 or 6, chroma of 3 to 6
Texture--loam, fine sandy loam, sandy clay loam, or loamy sand
Redoximorphic Features--iron depletions in shades of olive or gray and iron accumulations in shades of red, brown, yellow, or olive
2BCg horizon (if it occurs):
Color--hue of 10YR or 5Y, value of 5 to 7, chroma of 1 or 2
Texture--loam, fine sandy loam, sandy clay loam, or loamy sand
Redoximorphic Features--iron depletions in shades of olive or gray and iron accumulations in shades of red, brown, yellow, or olive
2C horizon:
Color--hue of 10YR or 2.5Y, value of 5 or 6, chroma of 3 to 6
Texture--loam, fine sandy loam, sandy loam, loamy sand, loamy fine sand, or sand
Redoximorphic Features--iron depletions in shades of olive or gray and iron accumulations in shades of red, brown, yellow, or olive
2Cg horizon (if it occurs)
Color--hue of 10YR or 5Y, value of 5 to 7, chroma of 1 or 2
Texture--loam, fine sandy loam, sandy loam, loamy sand, loamy fine sand, or sand
Redoximorphic Features--iron depletions in shades of olive or gray and iron accumulations in shades of red, brown, yellow, or olive
COMPETING SERIES:
Berea soils--moderately deep to paralithic contact and formed in residuum from acid shale
Deputy soils--deep to paratithic contact and formed in loess underlain by residuum weathered from shale
Hibler soil--old alluvial soils influenced by limestone bedrock, on river terraces
Knobtop soils--moderately deep to lithic contact and formed in loess underlain by residuum weathered from igneous rocks
Marquand soils--formed in silty and loamy sediments derived form loess, colluvium and alluvium and typically have greater than 60 inch solum thickness
Morehead soils--formed in old alluvium, high in silt, derived from shale, siltstone, and sandstone
Scottsburg soils--formed in loess and residuum from acid shale and have fragic soil properties
Sharptown soils--contain more than 10 percent, by volume glauconite in the subsoil
GEOGRAPHIC SETTING:
Landscape: Coastal Plain
Landform: Marine terraces and uplands
Elevation: 5 to 120 feet
Parent Material: Silty eolian sediments, underlain by coarser fluvial or marine sediments
Mean Annual Air Temperature: 52 to 57 degrees F.
Mean Annual Precipitation: 42 to 48 inches
Frost Free Period: 190 to 210 days
GEOGRAPHICALLY ASSOCIATED SOILS:
Butlertown soils--are slowly permeable and have a fragipan, on similar landforms
Matapeake soils--are well drained with a seasonal high water table at depths greater than 72 inches, on slightly higher positions
Othello soils--poorly drained soils with a seasonal high water table at 0 to 12, on lower-lying positions
Pineyneck soils--have a coarse-loamy particle-size control section, on similar landforms
Sassafras soils--are well drained and have a fine-loamy particle-size control section, on slightly higher landforms
Unicorn soils--are well drained and have a coarse-loamy particle-size control section, on slightly higher landforms
Whitemarsh soils--have an abrupt texture change at the top of the argillic horizon and are poorly drained with a seasonal high water table at 0 to 12, on lower-lying positions
USE: Most areas are cultivated and used for corn, soybeans, and small grains. Some areas are in urban uses and some are used for vegetables, hay, or pasture.
VEGETATION: Wooded area are dominantly mixed hardwoods, dominated by oaks, sweetgum, red maple, and holly. Loblolly pine occurs in some second growth areas.
DISTRIBUTION: Coastal Plain of Maryland, Delaware, and New Jersey
EXTENT: Large
SERIES ESTABLISHED: Pasquotank County, North Carolina, 1951
REMARKS: Diagnostic horizons and other diagnostic soil characteristics recognized in this pedon are:
Ochric epipedon--the zone from the surface to 15 inches (Ap and BE horizons)
Argillic horizon--the zone from 15 to 36 inches (Bt1 and Bt2 horizons)
Aquic conditions--the zone from 26 inches to a depth of 80 inches is periodically saturated (endosaturation)
SERIES INTERPRETATION RECORD(S): MD0035
TABULAR SERIES DATA:
SOI-5 Soil Name Slope Airtemp FrFr/Seas Precip Elevation MD0035 MATTAPEX 0- 30 52- 57 190-210 42- 48 5- 120SOI-5 FloodL FloodH Watertable Kind Months Bedrock Hardness MD0035 NONE 1.5-3.0 APPARENT JAN-APR >60
SOI-5 Depth Texture 3-Inch No-10 Clay% -CEC- MD0035 0-15 L 0- 0 100-100 10-18 2- 15 MD0035 0-15 SIL 0- 0 90-100 10-18 2- 15 MD0035 0-15 FSL 0- 0 90-100 10-18 2- 15 MD0035 15-36 SICL SIL 0- 0 100-100 18-30 2- 10 MD0035 36-60 FSL L LS 0- 0 90-100 8-15 2- 5 MD0035 60-65 S LS 0- 0 90-100 3- 8 2- 5
SOI-5 Depth -pH- O.M. Salin Permeab Shnk-Swll MD0035 0-15 3.6- 5.5 .5-3. 0- 0 0.6- 2.0 LOW MD0035 0-15 3.6- 5.5 .5-3. 0- 0 0.6- 2.0 LOW MD0035 0-15 3.6- 5.5 .5-3. 0- 0 0.6- 2.0 LOW MD0035 15-36 3.6- 5.5 0.-.5 0- 0 0.2- 2.0 LOW MD0035 36-60 3.6- 5.5 0.-.5 0- 0 0.6- 6.0 LOW MD0035 60-65 3.6- 5.5 0.-.5 0- 0 6.0- 20 LOW