LOCATION MATTAPEX           MD+DE NJ PA VA
Established Series
Rev. DS-DHK-MDJ
10/2008

MATTAPEX SERIES


MLRA(s): 149A, 153C, 153D
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Morgantown, West Virginia
Depth Class: Very deep
Drainage Class (Agricultural): Moderately well drained
Internal Free Water Occurrence: Moderately deep and common
Saturated Hydraulic Conductivity: Moderately high or high in the subsoil and high or very high in the substratum
Permeability (obsolete): Moderate or moderately slow in the subsoil and rapid to very rapid in the substratum
Physiographic Province: Coastal Plain
Landscape: Upland, lowland
Landform (type location): Flat
Parent Material: Silty eolian deposits over fluviomarine sediments
Elevation (type location): 3 meters (10 feet)
Slope: 0 to 30 percent
Frost Free Period (type location): 190 days
Mean Annual Air Temperature (type location): 12.7 degrees C. (55 degrees F.)
Mean Annual Precipitation (type location): 1092 mm (43 inches)

TAXONOMIC CLASS: Fine-silty, mixed, active, mesic Aquic Hapludults

TYPICAL PEDON: Mattapex silt loam, cultivated. (Colors are for moist soil.)

Ap--0 to 31 cm (0 to 12 inches); yellowish brown (10YR 5/4) silt loam; weak fine subangular blocky structure; friable, slightly sticky, slightly plastic; many very fine and common fine roots; many very fine and few fine and medium random tubular pores; neutral; abrupt wavy boundary. (0 to 35 cm thick)

Bt1--31 to 51 cm (12 to 20 inches); yellowish brown (10YR 5/6) silt loam; weak medium subangular blocky structure; friable, slightly sticky, slightly plastic; common very fine and few fine roots; many very fine, common fine, and few medium random tubular pores; few faint clay films on faces of peds; neutral; clear wavy boundary.

Bt2--51 to 72 cm (20 to 28 inches); yellowish brown (10YR 5/6) silt loam; moderate medium subangular blocky structure; friable, slightly sticky, slightly plastic; many very fine, common fine, and few medium random tubular pores; common medium distinct pale brown (10YR 6/3) and few medium prominent light gray (10YR 7/2) iron depletions; few distinct clay films on faces of peds and lining pores; strongly acid; clear smooth boundary. (combined thickness of Bt is 38 to 102 cm)

Btg--72 to 95 cm (28 to 37 inches); light brownish gray (2.5Y 6/2) silt loam; moderate medium subangular blocky structure; firm, slightly sticky, slightly plastic; many very fine, common fine, and few medium random tubular pores; common medium prominent yellowish brown (10YR 5/6) and few medium distinct strong brown soft iron accumulations; few distinct clay films on faces of peds and lining pores; strongly acid; clear wavy boundary. (0 to 30 cm thick)

2BCtg--95 to 115 cm (37 to 45 inches); light brownish gray (2.5Y 6/2) fine sandy loam; few medium prominent light brown (7.5YR 6/3) mottles; moderate coarse subangular blocky structure; firm, nonsticky, slightly plastic; many very fine and few fine random tubular pores; common medium prominent yellowish brown (10YR 5/6) soft iron accumulations; common distinct clay films on faces of peds and lining pores; very strongly acid; clear smooth boundary. (0 to 30 cm thick)

2BCg1--115 to 149 cm (45 to 58 inches); light gray (2.5Y 7/2) fine sandy loam; few medium distinct light brown (7.5YR 6/3) mottles; moderate coarse angular blocky structure; firm, nonsticky, slightly plastic; many very fine and few fine irregular pores; many medium distinct yellowish brown (10YR 5/6) soft iron accumulations; few distinct clay films on faces of peds; strongly acid; clear smooth boundary.

2BCg2--149 to 185 cm (58 to 72 inches); light brownish gray (2.5Y 6/2) loam; common medium faint light yellowish brown (2.5Y 6/3) mottles; weak coarse subangular blocky structure; firm, slightly sticky, slightly plastic; common very fine and few fine irregular pores; few medium prominent yellowish brown (10YR 5/8) soft iron accumulations; strongly acid.

TYPE LOCATION: Queen Anne's County, Maryland; MLRA 153C; on Kent Island, approximately 1.25 miles southeast along Batts Neck Road from its intersection with Route 8, approximately 0.6 mile south of Batts Neck Road, about 150 feet west of a small drainageway in the crop field; USGS Kent Island, Maryland topographic quadrangle; lat. 38 degrees 55 minutes 10.7 seconds N. and long. 76 degrees 19 minutes 58.4 seconds W., NAD 1983

RANGE IN CHARACTERISTICS:
Solum Thickness: 61 to 203 cm. (24 to 80 inches)
Depth to Bedrock: Greater than 183 cm. (72 inches)
Depth to Seasonal High Water Table: 46 to 102 cm (18 to 40 inches), January to April with wide seasonal fluctuation
Depth to the Lithologic Discontinuity: 76 to 127 cm. (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 (if it occurs):
Color--hue of 10YR or 2.5Y, value of 5 or 6, chroma of 3 to 6
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
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, sandy 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 :
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 (if it occurs):
Color--hue of 7.5YR to 5Y, value of 5 to 7, chroma of 3 to 8
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 to 5Y, value of 5 to 8, 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:
Crosiadore soilshave a seasonal high water table at 10 to 20 inches below the soil surface; on slightly lower landforms are somewhat poorly drained on lower landforms
Cumberstone soils--have a seasonal high water table at 10 to 20 inches below the soil surface; on slightly lower landform positions
Deputy soils--deep to paratithic contact and formed in loess underlain by residuum weathered from shale
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
Sharptown soils--contain more than 10 percent, by volume glauconite in the subsoil

GEOGRAPHIC SETTING:
Landscape: Coastal Plain, upland, lowland
Landform: Flat, depression, swale, marine terraces and uplands
Elevation: 1.5 to 36.5 meters (5 to 120 feet)
Parent Material: Silty eolian deposits over fluviomarine sediments
Frost Free Period: 180 to 220 days
Mean Annual Air Temperature: 11 to 14 degrees C. (52 to 58 degrees F.)
Mean Annual Precipitation: 1067 to 1219 mm (42 to 48 inches)

GEOGRAPHICALLY ASSOCIATED SOILS:
Butlertown soils--are slowly permeable and have a fragipan, on similar landforms
Crosiadore soilsare somewhat poorly drained on lower landforms
Leipsic soilshave a silty mantle greater than 45 inches thick, 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

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage Class (Agricultural): Moderately well drained
Saturated Hydraulic Conductivity (Permeability obsolete): Moderately high or high in the subsoil and high or very high in the substratum
Internal Free Water Occurrence: Moderately deep (20 to 40 inches) and common (present 3 to 6 months)
Index Surface Runoff: Low to high

USE AND VEGETATION:
Major uses: Woodland and cropland
Dominant Vegetation: Where cultivatedcorn, barley, wheat and soybeans. Where woodedwhite oak, scarlet oak, loblolly pine, red maple, yellow poplar, sweet gum.
Managed woodland vegetation: Loblolly pine
Understory species: Sassafras, dogwood, greenbriar, American holly.

DISTRIBUTION AND EXTENT:
Distribution: Coastal Plain of Maryland, Delaware, New Jersey, Pennsylvania and Virginia
Extent: Large

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Morgantown, West Virginia

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 31 cm (12 inches; Ap horizon)
Argillic horizon--the zone from 31 to 95 cm (12 to 37 inches; Bt1, Bt2, and Btg horizons)
Aquic conditions--the zone from 51 cm (20 inches) to a depth of 200 cm (80 inches) is periodically saturated (endosaturation)

Prior rev. JAK 11/2002. 2008 Rev new type location.

ADDITIONAL DATA:
Series Interpretation Record(s): MD035

Revised: 11/2002-JEB, JAK The Database Information: Representative Pedon Data Mapunit for the old description455198
; 10/2008-JEB, DHK, MJ New type location.


National Cooperative Soil Survey
U.S.A.