LOCATION SENECAVILLE WV+OHEstablished Series
TAXONOMIC CLASS: Fine-silty, mixed, active, mesic Fluvaquentic Eutrudepts
TYPICAL PEDON: Senecaville silt loam - cultivated (Colors are for moist soil.)
Ap--0 to 8 inches, reddish brown (5YR 4/3) silt loam; moderate medium granular structure; very friable; many roots; strongly acid; abrupt smooth boundary. (5 to 10 inches thick)
Bw1--8 to 17 inches, reddish brown (5YR 4/3) silt loam; weak and moderate medium subangular blocky structure; friable; common roots; few fine pores; moderately acid; clear wavy boundary.
Bw2--17 to 32 inches, reddish brown (5YR 4/3) silt loam; weak medium subangular blocky structure; friable and firm; few roots; few fine pores; few fine dark manganese concretions and coatings; common fine yellowish red (5YR 4/6) iron accumulations and pinkish gray (7.5YR 6/2) iron depletions; moderately acid; clear wavy boundary. (Combined thickness of the Bw horizon is 17 to 40 inches.)
C--32 to 60 inches, reddish brown (5YR 4/3) silt loam, with thin bands of pinkish gray (7.5YR 6/2) silt and fine sand; massive; firm; common fine dark manganese concretions and coatings; many fine and medium yellowish red (5YR 4/6) and light brownish gray (2.5Y 6/2) iron depletions; moderately acid.
TYPE LOCATION: Wood County, West Virginia; about .3 mile southeast of Wadesville along the North Fork of Lee Creek.
RANGE IN CHARACTERISTICS: Solum thickness ranges from 30 to 50 inches. Depth to bedrock is greater than 60 inches Gravel content ranges from 0 to 5 percent in the A and B horizons, and 0 to 20 percent in the C horizon. Reaction ranges from slightly acid to strongly acid throughout the profile, unless limed.
The Ap horizon has hue of 5YR or 7.5YR, value of 4 or 5 and chroma of 2 to 4. Uncultivated areas have thin Al horizons with value of 2 or 3. The A horizon is silt loam or loam.
The Bw horizon has hue of 5YR or 2.5YR, value of 3 to 5 and chroma of 3 to 6. Redoximorphic features, occurring within 15 to 24 inches of the soil surface, have a chroma of 2 to 6. It is silt loam or silty clay loam.
The C horizon has hue of 2.5YR to 7.5YR, value of 2 to 5 and chroma of 2 to 6. It is silt loam, loam, and less commonly fine sandy loam. Some pedons are stratified. Redoximorphic features are present in most pedons.
COMPETING SERIES: These are
Hontas and
Lindside in the same family. Hontas soils have lOYR hue throughout. Lindside soils have 7.5YR or yellower hue throughout.
Similar soils in related families are
Lobdell,
Moshannon,
Nolin,
Rahm,
Steff and
Weaver. Lobdell and Weaver soils have 7.5YR or yellower hue and fine-loamy particle-size control sections. Moshannon and Nolin soils lack redoximorphic features within 24 inches of the soil surface. In addition, the Nolin soils have 7.5YR or yellower hue. Rahm and Steff soils have 7.5YR or yellower hue. In addition, the Rahm soils have dominant chroma of 2 or less within 20 inches of the soil surface.
GEOGRAPHIC SETTING: Senecaville soils formed in lime-influenced alluvium washed from soils underlain by shale, siltstone and some sandstone. Slope ranges from 0 to 3 percent. The climate is humid temperate type. Average annual Precipitation is 38 to 50 inches. Mean annual temperatures are from 50 to 59 degrees F.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Allegheny, Gallia, Gilpin, Hackers, Melvin, Monongahela, Moshannon, Omulga, Upshur, Vandalia, and Woodsfield soils. The Allegheny, Gallia, Monongahela, and Omulga soils are on high terraces. They have argillic horizons and fine-loamy particle- size control sections. In addition, Monongahela and Omulga soils have a fragipan, and Allegheny and Gallia soils lack redoximorphic features. Gilpin, Upshur and Woodsfield soils are on the surrounding uplands. Gilpin soils have 7.5YR or yellower hue, argillic horizons, and are underlain by bedrock at a depth of 20 to 40 inches. Upshur and Woodsfield soils have argillic horizons, more than 35 percent clay in the particle-size control section, and lack redoximorphic features. Hackers, Melvin and Moshannon occupy similar positions. Hackers and Moshannon soils lack redoximorphic features within the control section. In addition, Hackers soils have argillic horizons. Melvin soils have dominant chroma of 2 or less immediately below the surface layer. Vandalia soils are on adjacent foot slopes. They have argillic horizons and more than 35 percent clay in the particle-size control section, and lack redoximorphic features within the control section.
DRAINAGE AND PERMEABILITY: Moderately well drained. The potential for surface runoff is very low or low. Permeability is moderate to moderately slow. They are subject to common or rare flooding of very brief duration, mainly December through April, and have an apparent water table at depths of 1.5 to 3 feet during these months.
USE AND VEGETATION: Nearly all cleared and used for cropland or pasture.
DISTRIBUTION AND EXTENT: Western West Virginia and Eastern Ohio.
MLRA OFFICE RESPONSIBLE: Morgantown, West Virginia
SERIES ESTABLISHED: Guernsey County (Seneca Fork Project), Ohio, 1939.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - The zone from 0 to 8 inches (Ap horizon).
Cambic horizon - The zone from 8 to 32 inches (Bw1 and Bw2 horizons).
Fluvaquentic feature - Irregular decrease in organic carbon and redoximorphic features with chroma of 2 or less within a depth of 24 inches.