LOCATION SHOUNS TN+NC VA WVEstablished Series
TAXONOMIC CLASS: Fine-loamy, mixed, semiactive, mesic Typic Hapludults
TYPICAL PEDON: Shouns silt loam--pasture. (Colors are for moist soil unless otherwise stated.)
Ap--0 to 8 inches; brown (10YR 4/3) silt loam; moderate fine granular structure; very friable; many fine roots; medium acid; clear smooth boundary. (4 to 9 inches thick)
BA--8 to 18 inches; strong brown (7.5YR 5/6) silt loam; moderate fine subangular blocky structure; friable; few partly rounded gray and purplish fragments of siltstone; strongly acid; clear smooth boundary. (0 to 12 inches thick)
Bt1--18 to 28 inches; yellowish red (5YR 5/6) silty clay loam; moderate medium subangular blocky structure; friable; few faint clay films on faces of peds; 10 percent fragments of siltstone .5 inch to 2 inches in diameter; strongly acid; clear smooth boundary.
Bt2--28 to 55 inches; yellowish red (5YR 4/6) silty clay loam; moderate medium subangular blocky structure; firm; many distinct clay films on faces of peds; few siltstone fragments less than 3 inches in diameter; strongly acid; clear smooth boundary. (thickness of the Bt horizon ranges from 25 to 50 inches)
BC--55 to 76 inches; reddish brown (5YR 4/4) shaly clay loam; weak medium subangular blocky structure; friable; 25 percent grayish and purplish fragments of siltstone less than 3 inches diameter; few faint clay films on vertical faces of peds; strongly acid; clear smooth boundary. (0 to 25 inches thick)
R--76 inches; variegated yellowish red and greenish hard siltstone.
TYPE LOCATION: Hawkins County, Tennessee; 1/4 mile northeast of Rogersville High School and 30 feet south of U.S. 11 west by-pass.
RANGE IN CHARACTERISTICS: Thickness of the solum ranges from 45 to 80 inches. Depth to bedrock is more than 5 feet but is normally less than 10 feet. This soil is medium acid to very strongly acid. Fragments of siltstone, sandstone, or shale ranges from 0 to 35 percent through the particle size control section and up to 45 percent below the control section.
The Ap or A horizon has hue of 10YR or 7.5YR, value of 3 to 5, and chroma of 2 to 4. Horizons with value of 3 are less than 6 inches thick. The texture is silt loam or loam and rarely silty clay loam or clay loam where severely eroded.
The E horizon where present, has a hue of 10YR or 7.5YR, value of 5 or 6, and chroma of 2 to 4.
Many pedons have a transitional horizon between the A or E horizon and the Bt horizon and between the Bt and C or R horizon.
The Bt horizon has hue of 5YR or 2.5YR, value of 4 or 5, and chroma of 4 to 8. Some pedons also have a hue of 2.5YR, value of 3 and chroma of 6 in the lower part. The texture is silty clay loam or clay loam and some pedon have subhorizons of silt loam or loam.
Some pedons have a C horizon with colors and textures like the Bt horizon and some pedons have a Cr horizon.
COMPETING SERIES: Series in the same family are the Albemarle, Allegheny, Allenwood, Arcola, Arendtsville, Aura, Bedington, Birdsboro, Bucks, Butano, Chester, Chetwynd, Chilmark, Clymer, Collington, Cowee, Edgemont, Edneytown, Elsinboro, Eubanks, Frankstown, Freehold, Gilpin, Glenely, Junaluska, Leck Kill, Matapeake, Meadowville, Murrill, Nixon, Pineville, Quakertown, Rayne, Shelocta, Syenite, Tate, Thurmont, Ungers, and Whiteford series. The Albemarle, Allegheny, Arcola, Bedington, Bucks, Butano, Chester, Chetwynd, Chilmark, Clymer, Collington, Cowee, Edgemont, Edneytown, Elsinboro, Frankstown, Freehold, Gilpin, Junaluska, Leck Kill, Matapeake, Meadowville, Murrill, Nixon, Pineville, Quakertown, Rayne, Shelocta, Syenite, Tate, and Ungers series have hue of 7.5YR or yellower throughout the Bt horizon. Butano, Cowee, Gilpin, and Junaluska have bedrock at depths less than 60 inches.
Allenwood soils formed in glacial till. Arendtsville soils formed in material weathered from a fanglomeate of quartzite, sandstone, and auorhyolite held together in a red sandy matrix. Aura soils have a higher sand content and less silt. Birdsboro soils are on terraces and fans and have sola less than 50 inches thick. Eubanks soils formed in granodiorites on the Piedmont Plateau. Glenelg soils formed in residuum of micaceous schist on the Piedmont Plateau. Thurmont soils formed in colluvium and alluvium from crystalline rocks. Whiteford soils formed in residuum from slate.
GEOGRAPHIC SETTING: Shouns soils are on the lower part of hillsides, benches, and foot slopes. These soils formed in colluvium from sandstone, siltstone, and shale. Slopes range from 2 to 70 percent. Climate is temperate and humid, mean annual temperature ranges from 50 to 57 degrees F., and mean annual precipitation from 42 to 52 inches.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the competing Tate series and Barbourville, Bland, Calvin, Litz, and Sensabaugh series. Barbourville and Sensabaugh soils are in narrow strips along drainageways and do not have an argillic horizon. Bland soils are on adjacent uplands and are clayey and moderately deep to rock. Calvin and Litz soils are on higher lying uplands and have a loamy-skeletal control section.
DRAINAGE AND PERMEABILITY: Well drained; medium to rapid runoff; moderate permeability.
USE AND VEGETATION: Most cleared areas are used for growing pasture, hay, tobacco, and vegetables. The steeper areas are used mostly as forest. The native vegetation was mixed hardwoods.
DISTRIBUTION AND EXTENT: The northern part of the Great Appalachian Valley in east Tennessee and in North Carolina, Virginia, and West Virginia. The series is of moderate extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Morgantown, West Virginia
SERIES ESTABLISHED: Johnson County, Tennessee, 1947.
Remarks: Diagnostic horizons recognized in this soil are:
Ochric epipedon - 0 to 8 inches (Ap horizon)
Argillic horizon - 18 to 55 inches (Bt horizon)