LOCATION MATAPEAKE MD+DE NJ VAEstablished Series
TAXONOMIC CLASS: Fine-silty, mixed, semiactive, mesic Typic Hapludults
TYPICAL PEDON: Matapeake silt loam, in an orchard with shallow cultivation. (Colors are for moist soil.)
Ap--0 to 5 inches; grayish brown (2.5Y 5/2) silt loam; weak fine and medium granular structure; friable; many roots; slightly acid; abrupt smooth boundary. (0 to 10 inches thick)
E--5 to 11 inches; light yellowish brown (2.5Y 6/4) silt loam; weak fine and medium granular and weak fine subangular blocky structure; friable; common roots; strongly acid; clear wavy boundary. (0 to 11 inches thick)
Bt1--11 to 16 inches; yellowish brown (10YR 5/4) silt loam; weak medium subangular blocky structure; friable; slightly sticky, slightly plastic; few roots; strongly acid; clear wavy boundary.
Bt2--16 to 34 inches; strong brown (7.5YR 5/6) silt loam; moderate medium and coarse subangular blocky structure; firm; sticky, plastic; few roots; many medium clay films on ped faces; very strongly acid; gradual smooth boundary. (Combined thickness of the Bt horizon is 15 to 30 inches.)
2BC--34 to 38 inches; strong brown (7.5YR 5/6) sandy loam; weak medium and coarse subangular blocky structure; friable; slightly sticky, slightly plastic; few faint clay films; very strongly acid; clear smooth boundary. (0 to 8 inches thick)
2C1--38 to 58 inches; light yellowish brown (2.5YR 6/4) sandy loam; a few streaks of light gray (5Y 5/2) clean sand; massive; very friable: slightly sticky; very strongly acid; clear smooth boundary.
2C2--58 to 62 inches; pale yellow (5Y 7/3) and yellowish brown (10YR 5/8) loamy sand; single grain, loose; very strongly acid.
TYPE LOCATION: Wicomico County, Maryland; 1.7 miles southwest of Allen.
RANGE IN CHARACTERISTICS:
Solum Thickness: 24 to 60 inches
Depth to Bedrock: Greater than 72 inches
Depth to Seasonal High Water Table: Greater than 72 inches. At elevations below 25 feet, some pedons have an apparent water table from 48 to 72 inches.
Depth to Lithologic Discontinuity: 30 to 40 inches
Rock Fragments: Less than 5 percent, by volume in the A and Bt horizons and 0 to 10 percent in the 2BC and 2C horizons, mostly quartz pebbles
Soil Reaction: Extremely acid to strongly acid, throughout the profile, unless limed
Other Features: The transition from the fine-silty Bt horizon to the sandy 2C horizon is greater than 5 inches thick.
RANGE OF INDIVIDUAL HORIZONS:
Ap horizon:
Color--hue of 10YR or 2.5Y, value of 4 to 6, chroma of 2 to 6.
Texture--silt loam, loam, or fine sandy loam
A horizon (if it occurs is less than 7 inches thick if the value is 3 or less):
Color--hue of 10YR or 2.5Y, value of 3 or 4, chroma of 1 to 3
Texture--silt loam, loam, or fine sandy loam
E horizon:
Color--hue of 10YR on 2.5Y, value of 5 or 6, chroma of 4 to 6
Texture--silt loam, loam, or fine sandy loam
The Bt horizon:
Color--hue of 7.5YR or 10YR, value of 4 or 5, chroma of 4 to 8
Texture--silt loam or silty clay loam
2BC horizon:
Color--hue of 7.5YR or 10YR, value of 4 to 6, chroma of 4 to 8
Texture-loam, fine sandy loam, or sandy loam
2C horizon:
Color--hue of 5YR to 5Y, value of 4 to 7, chroma of 3 to 8. Some pedons have streaks of clean sand with chroma of 3 or less.
Texture--fine sandy loam, sandy loam, loamy fine sand, loamy sand, or sand. Some pedons have thin gravelly strata less than 1 foot thick.
COMPETING SERIES:
Cabool soils--moderately deep to lithic contact and formed in loess underlain by residuum from of chert and sandstone
Chillum soils--have a dense compact 2C horizon that is firm or very firm
Fletcher soils--deep to lithic contact and formed in residuum from phyllite
Gnawbone soils--moderately deep to paralithic contact and formed in residuum from siltstone
Greenbriar soils--deep to lithic contact and formed in a silty mantle underlain by residuum from acid shale and siltstone
Jessietown soils--moderately deep to lithic contact and formed in a silty mantle underlain by residuum from acid shale and siltstone
Nassawango soils--have a perched water table at a depth of 42 to 72 inches
Purcellville soils--formed in residuum weathered from diorite, biotite schist, and greenstone schist
Talleyville soils--have sola more than 48 inches thick and formed in a silty mantle underlain by residuum weathered from basic rocks
Wernock soils--moderately deep to paralithic contact and formed in residuum weathered from shale, siltstone, and sandstone
Whitley soils--formed in silty alluvium derived from sandstone, siltstone, and shale
Wrays soils--deep to lithic contact and formed in loess underlain by residuum from siltstone
GEOGRAPHIC SETTING:
Landscape: Coastal Plain
Landform: Upland interfluves and side slopes
Elevation: 5 to 125 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:
Chillum soils--have a dense compact 2C horizon that is firm or very firm, on similar landforms
Mattapex soils--moderately well drained soils with a seasonal high water table at 18 to 36 inches, on slightly lower-lying landforms
Sassafras soils--have a fine-loamy particle-size control section, on similar landforms
Butlertown soils--moderately well drained soils that have a fragipan on slightly lower-lying landforms
Othello soils--poorly drained soils, on lower-lying landforms
Fallsington soils--poorly drained soils that have a fine-loamy particle-size control section, on lower-lying landforms
Fallsington soils
Woodstown soils--moderately well drained soils that have a fine-loamy particle-size control section, on slightly lower-lying landforms
USE: Almost all areas of Matapeake soils are cultivated. Corn, soybeans, and small grains are commonly grown. A small amount of acreage is irrigated.
VEGETATION: Native vegetation is dominated by oaks and some cutover areas have loblolly, Virginia, or shortleaf pine.
DISTRIBUTION: The Coastal Plain of Maryland, Delaware, and New Jersey
EXTENT: Large
SERIES ESTABLISHED: Pasquotank County, North Carolina, 1951
REMARKS: Matapeake soils were previously classified as having a fine-loamy particle-size control section.
Diagnostic horizons and other diagnostic soil characteristics recognized in this pedon are:
Ochric epipedon--the zone from the surface to a depth of 11 inches (Ap and E horizons)
Argillic horizon--the zone from 11 to 38 inches (Bt1, Bt2, and 2BC horizons)
SERIES INTERPRETATION RECORD(S): MD0037, MD0130 (WET SUBSTRATUM)
TABULAR SERIES DATA:
SOI-5 Soil Name Slope Airtemp FrFr/Seas Precip Elevation MD0037 MATAPEAKE 0- 30 52- 57 190-210 42- 48 5- 120 MD0130 MATAPEAKE 0- 5 52- 57 190-210 42- 48 5- 30SOI-5 FloodL FloodH Watertable Kind Months Bedrock Hardness MD0037 NONE 6.0-6.0 - >60 MD0130 NONE 4.0-6.0 APPARENT JAN-APR >60
SOI-5 Depth Texture 3-Inch No-10 Clay% -CEC- MD0037 0-11 SIL 0- 0 100-100 5-15 - MD0037 0-11 FSL 0- 0 100-100 5-15 - MD0037 0-11 L 0- 0 100-100 5-15 - MD0037 11-34 SIL SICL L 0- 0 100-100 18-30 - MD0037 34-62 SL LS S 0- 0 90-100 2-20 - MD0130 0- 7 SIL FSL 0- 0 100-100 10-18 5- 15 MD0130 7-13 SIL 0- 0 100-100 10-18 5- 15 MD0130 13-38 SIL SICL 0- 0 100-100 18-30 2- 10 MD0130 38-46 SL L FSL 0- 0 75-100 10-22 2- 10 MD0130 46-72 LS S LFS 0- 0 75-100 3-10 2- 10
SOI-5 Depth -pH- O.M. Salin Permeab Shnk-Swll MD0037 0-11 4.5- 5.5 1.-2. 0- 0 0.6- 2.0 LOW MD0037 0-11 4.5- 5.5 1.-2. 0- 0 0.6- 2.0 LOW MD0037 0-11 4.5- 5.5 1.-2. 0- 0 0.6- 2.0 LOW MD0037 11-34 3.6- 5.5 0.-.5 0- 0 0.2- 2.0 LOW MD0037 34-62 3.6- 5.5 0.-.5 0- 0 0.6- 6.0 LOW MD0130 0- 7 4.5- 7.3 1.-2. 0- 0 0.6- 2.0 LOW MD0130 7-13 3.6- 6.0 0.-.5 0- 0 0.6- 2.0 LOW MD0130 13-38 3.6- 5.5 0.-.5 0- 0 0.2- 2.0 LOW MD0130 38-46 3.6- 5.5 0.-.5 0- 0 0.6- 6.0 LOW MD0130 46-72 3.6- 5.5 0.-.5 0- 0 6.0- 20 LOW