Soil Survey of McHenry County, Illinois Part I - Soil Data Mart

McHenry County, Illinois—Part I 129
2C2—51 to 65 inches; brown (7.5YR 5/3) loam;
massive; friable; very few distinct dark brown
(7.5YR 3/2) linings in root channels and in pores;
common medium and coarse distinct strong brown
(7.5YR 5/6) masses of iron accumulation in the
matrix; common fine and medium faint pinkish
gray (7.5YR 6/2) iron depletions in the matrix; 5
percent gravel; strongly effervescent; moderately
alkaline.
MLRA Series Range in Characteristics
Thickness of silty material: 22 to 40 inches
Depth to carbonates: 36 to 60 inches
Thickness of the solum: 36 to 60 inches
Ap or A horizon:
Hue—10YR
Value—3 or 4 (6 or 7 dry)
Chroma—2 or 3
Texture—silt loam
Bt horizon:
Hue—10YR
Value—4 to 6
Chroma—2 to 4
Texture—silty clay loam or silt loam
2Bt horizon:
Hue—7.5YR, 10YR, or 2.5Y
Value—4 to 6
Chroma—2 to 6
Texture—clay loam, loam, or sandy clay loam
2C horizon:
Hue—7.5YR, 10YR, or 2.5Y
Value—4 to 6
Chroma—2 to 6
Texture—loam or sandy loam
Content of gravel—3 to 15 percent
544A—Torox silt loam, 0 to 2 percent
slopes
Setting
Landform: Moraines and till plains
Position on the landform: Footslopes
Slope range: 0 to 2 percent
A typical soil series description with range in
characteristics is included, in alphabetical order, in this
section. Additional information specific to this map
unit, such as horizon depth and textures, is available
in the “Soil Properties” section in Part II of this
publication.
Composition
Torox and similar soils: 85 percent
Dissimilar soils: 15 percent
Similar soils:
• soils that have a darker surface layer
• soils that have a seasonal high water table at a
depth of more than 2.5 feet
• soils that contain carbonates at a depth of less than
36 inches
• soils that contain more sand in the upper one-half of
the subsoil
Dissimilar soils:
• the well drained Caprell and Piscasaw soils and the
moderately well drained Windere soils in the higher
positions on the landform
Management
For general and detailed information about
managing this map unit, see the following sections in
Part II of this publication:
• “Agronomy” section
• “Forestland” section
• “Wildlife Habitat” section
• “Engineering” section
• “Soil Properties” section
Troxel Series
Drainage class: Well drained
Permeability: Moderate
Landform: Outwash plains and till plains
Parent material: Silty colluvium and the underlying drift
Slope range: 0 to 2 percent
Taxonomic classification: Fine-silty, mixed, mesic
Pachic Argiudolls
Typical Pedon for MLRA 95B
Typical pedon of Troxel silt loam, 0 to 2 percent
slopes, 165 feet south and 2,100 feet west of the
northeast corner of sec. 14, T. 44 N., R. 6 E.
Ap—0 to 8 inches; black (10YR 2/1) silt loam, dark
grayish brown (10YR 4/2) dry; weak very fine
granular structure; friable; many very fine roots;
slightly acid; abrupt smooth boundary.
A1—8 to 14 inches; black (10YR 2/1) silt loam, dark
grayish brown (10YR 4/2) dry; moderate fine
granular structure; friable; many very fine roots;
slightly acid; abrupt smooth boundary.
A2—14 to 27 inches; black (N 2.5/0) silt loam, dark
grayish brown (10YR 4/2) dry; moderate fine