| Snead Series |
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Soil Map Unit 50006 |
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Depth class: Moderately deep
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Drainage class: Moderately well
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Landform: Uplands
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Parent material: Residuum from calcareous, clayey, gray shale’s
thin interbedded limestone |
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| Slope range: 5 to 14 Percent |
Land Capability Classification: 4E
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Soil Depths
(Inches) |
Available Water Capacity
(In/in range) |
Permeability
(In/hr range) |
| 0-7 |
0.21-0.24 |
0.20-0.60 |
| 7-31 |
0.12-0.14 |
0.06-0.20 |
| 31-80 |
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0.01-0.20 |
Taxonomic class: Fine, mixed, mesic Aquic Hapludolls
Typical Pedon: Snead silty clay loam 5 to 14 percent slopes, eroded.
Ap=0 to 5 inches; very dark gray (10YR 3/1) silty clay loam; gray (10YR
5/1) dry; strong medium granular structure; friable; many very fine roots;
few clean sand grains; slightly acid; clear smooth boundary.
A=5 to 12 inches; black (10YR 2/1) silty clay loam, dark gray (10YR 4/1)
dry; strong very fine subangular blocky structure; friable; common very
fine grass roots; many fine pores; few fine sand grains; slightly acid;
clear smooth boundary.
Bw=12 to 17 inches; mottled very dark gray (10YR 3/1), olive gray (5YR
5/2) and olive (5YR 5/4) clay; weak fine subangular blocky structure;
firm; few very fine roots; 5 percent fragments of limestone or white concretions;
slightly effervescence; moderately alkaline; clear smooth boundary.
BC=17 to 24 inches; mottled brown (7.5YR 4/4) and dark grayish brown (10YR
4/2) clay; few fine prominent red (2.5YR 4/6) mottles; moderate fine moderate
fine subangular blocky structure; very firm; thin continuous light gray
(10YR 6/1) dry silt coatings on faces of peds; clay films on most peds;
some pebbles; very strongly acid; gradual smooth boundary.
C=24 to 25 inches; olive gray (5YR 5/2) silty clay; many medium faint
dark gray (5Y 4/1) and many medium prominent olive brown (2.5Y 5/2) mottles;
massive; firm; few very fine grass roots; 10 percent fragments of limestone;
strong effervescence; moderately alkaline; abrupt smooth boundary.
Cr=25 to 66 inches; olive gray (5Y 5/2) soft shale.
Range in Characteristics: Thickness of the solum ranges from 15 to
40 inches and depth to a paralithic contact ranges from 20 to 40 inches.
Depth to free carbonates ranges from 12 inches to the upper limit of the
partly weathered shale.
Drainage and Permeability: Permeability is slow. Moderately well
drained. Surface runoff is medium to rapid.
Use and Vegetation: About equal parts are in row crops, such as
corn and soybeans, and pasture. Native vegetation was tall prairie grasses.
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