LOCATION TALLEYVILLE MD+DE TNInactive Series
TAXONOMIC CLASS: Fine-silty, mixed, semiactive, mesic Typic Hapludults
TYPICAL PEDON: Talleyville silt loam - sodded orchard
(Colors are for moist conditions.)
Ap--0 to 8 inches, dark brown (10YR 3/3) silt loam; moderate fine subangular blocky structure; friable; clear smooth boundary. (2 to 3 inches thick)
E--8 to 10 inches, dark yellowish brown (10YR 4/4) silt loam; weak thin platy and very fine blocky structure; friable; very strongly acid; clear smooth boundary. (2 to 3 inches thick)
Bt1--10 to 33 inches, strong brown (7.5YR 5/6) heavy silt loam; moderate medium subangular blocky structure; slightly firm in place but aggregates are friable; common small krotovins; dark brown (10YR 4/3) silt coatings in root channels and worm holes; very strongly acid; gradual wavy boundary. (10 to 24 inches thick)
Bt2--33 to 44 inches, strong brown (7.5YR 5/6) heavy silt loam; moderate coarse subangular blocky structure parting to fine subangular blocky; firm in place; common distinct clay films on ped faces; about 20 percent inclusions (4 to 6 inch diameter) of yellowish red (5YR 4/8) silty clay loam; 2 percent gravel; very strongly acid; gradual wavy boundary. (0 to 15 inches thick)
2Bt3--44 to 51 inches, red (2.5YR 4/6) silty clay loam, 20 percent strong brown (7.5YR 5/6); moderate subangular blocky struc- ture parting to fine subangular blocky; firm, slightly sticky; common distinct clay coatings on peds; 1 percent gravel; strongly acid; gradual boundary. (0 to 12 inches thick)
2Bt4--51 to 64 inches, red (2.5YR 4/6) clay; moderate coarse an very coarse angular blocky structure; firm, sticky, plastic; common distinct clay coatings; 3 percent weathered gabbro fragments; strongly acid; diffuse boundary. (10 to 25 inches thick)
2BC--64 to 72 inches, red (2.5YR 4/6) sandy clay; weak coarse subangular blocky structure; friable and firm, plastic, slightly sticky; 10 percent weathered gabbro fragments which increase with depth; strongly acid.
TYPE LOCATION: Two miles northeast of Talleyville, 600 feet north of Silverside Road, New Castle County, Delaware.
RANGE IN CHARACTERISTICS: Solum thickness is more than 48 inches. The silty mantle ranges from 24 to 48 inches thick. Depth to hard rock is 6 to 10 feet or more. The silty mantle has 0 to 3 percent coarse frag- ments, and the 2B horizons have 0 to 15 percent rock fragments including up to 5 percent stones or boulders of igneous rock. The soil is very strongly or strongly acid above the lithologic discontinuity, unless limed, and strongly acid below.
The A horizons have hues of 10YR or 7.5YR, values of 3 to 5, and chroma of 2 through 4. They are silt loam in the fine earth fraction.
The E horizon has hue of 10YR or 7.5YR, value of 4 or 5, and chroma of 2 through 4. Texture is silt loam.
The Bt1 horizon has hues of 7.5YR or 10YR, vlaues of 4 or 5 and chromas of 4 through 8. It is silt loam and is slightly firmer than the A horizons. Bt2 and 2Bt1 horizons have hues of 2.5YR through 7.5YR, values of 4 or 5, and chroma of 6 through 8. The Bt2 and 2Bt3 horizons range from heavy silt loam to silty clay loam with inclusions of clay in the 2Bt3 in some pedons. The 2Bt4 horizons have hues of 10R of 2.5YR, values of 4 or 5 and chroma of 4 to 8. 2Bt2 horizons are clay or heavy clay loam.
2BC or 2C horizons have hues of 10R to 5YR values of 4 or 5 and chroma of 3 to 6. They are sandy clay, sandy clay loam, or loam.
COMPETING SERIES AND THEIR DIFFERENTIAE: The Chillum, Fletcher, Matapeake, Wernock and Whitley series are in the same family. The Chillum soils have sola less than 30 inches thick and lack hues of 5YR or redder in the lower part of the solum. Fletcher soils have sola less than 48 inches thick. Matapeake soils have sand to loam textures in the lower part of the series control section and formed in deep Coastal Plain sediments. Wernock soils have sola 30 to 40 inches thick and soft sandstone, siltstone or shale bedrock at 30 to 40 inches. Whitely soils have hues of 7.5YR or yellower throughout and have coarse fragments dominated by shale and sandstone. The Bucks, Fairfax, Montalto and Neshaminy series are similar soils in related families. Bucks, Fairfax and Neshaminy soils have a fine-loamy particle size control section. Montalto soils have a fine particle size-control section.
GEOGRAPHIC SETTING: The Talleyville soils developed in a silty mantle and the underlying residuum from basic igneous rocks, usually gabbro or diabase. They are nearly level to sloping soils in the uplands of the northern Piedmnont Plateau. Slopes are smooth and range from 0 to 10 percent, but most are between 2 and 5 percent. Mean annual temper- ature is about 50 degrees F, and mean annual precipitation is about 40 inches.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the competing Matapeake, Montalto and Neshaminy series and the Aldino, Butlertown, Legore, and Mattapex soils. The Aldino and Butlertown soils have fragipans, Legore soils lack a silty mantle, and Matapex soils are moderately well drained.
DRAINAGE AND PERMEABILITY: Well drained. Permeability is moderate in the A horizon and moderately slow below. Runoff is medium.
USE AND VEGETATION: Used for growing general farm crops, however, much of the soils is in areas of suburban expansion. Native vege- tation consisted of mixed hardwoods, but few naturally wooded areas remain.
DISTRIBUTION AND EXTENT: Northern Delaware and probably adjacent areas in Pennsylvania and Maryland and possibly in Virginia. The series is of moderate extet - 5,000 to 10,000 acres.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Morgantown, West Virginia
SERIES ESTABLISHED: New Castle County, Delaware, 1966.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon -- The zone from the surface of the soil to a depth of approximately 10 inches (A, E horizons)
Argillic horizon -- The zone from approximately 10 to 64 inches (Bt1, Bt2, 2Bt3 and 2Bt4 horizons)
Typic udults feature -- The occurence of clay films from 33 to 64 inches and strongly acid at a depth of 51 to 64 inches.