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

McHenry County, Illinois—Part I 51
grain; loose; about 30 percent gravel and 30
percent cobbles (as an average); strongly
effervescent; moderately alkaline; clear wavy
boundary.
3C2—45 to 60 inches; light yellowish brown (10YR
6/4), stratified very gravelly sand, extremely
gravelly sand, and gravel; single grain; loose;
about 65 percent gravel (as an average); strongly
effervescent; moderately alkaline.
MLRA Series Range in Characteristics
Depth to sandy and gravelly deposits: 20 to 40 inches
Depth to carbonates: 20 to 40 inches
Thickness of the solum: 20 to 40 inches
Ap or A horizon:
Hue—10YR
Value—3 or 4
Chroma—2 or 3
Texture—silt loam or loam
Bt horizon:
Hue—7.5YR or 10YR
Value—4
Chroma—3 or 4
Texture—silty clay loam or silt loam
2Bt horizon:
Hue—7.5YR or 10YR
Value—3 or 4
Chroma—3 or 4
Texture—clay loam, loam, sandy clay loam, sandy
loam, or the gravelly analogs of these textures
Content of gravel—0 to 35 percent
3C horizon:
Hue—7.5YR or 10YR
Value—4 to 6
Chroma—3 or 4
Texture—the gravelly, very gravelly, extremely
gravelly, cobbly, or very cobbly analogs of sand
or coarse sand
Content of gravel—15 to 70 percent
Content of cobbles—0 to 50 percent
327A—Fox silt loam, 0 to 2 percent
slopes
Setting
Landform: Stream terraces, kames, outwash plains,
and moraines
Position on the landform: Summits
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
Fox and similar soils: 85 percent
Dissimilar soils: 15 percent
Similar soils:
• soils that have a darker surface layer
• soils that contain sandy and gravelly deposits at a
depth of more than 40 inches or less than 20 inches
• soils that contain less sand and more silt in the
lower one-half of the subsoil
• soils that contain loamy till in the lower part of the
profile
Dissimilar soils:
• the somewhat poorly drained Kane soils in the
lower positions on the landform
• the poorly drained Will soils in depressions and
drainageways
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
327B—Fox silt loam, 2 to 4 percent
slopes
Setting
Landform: Stream terraces, kames, outwash plains,
and moraines
Position on the landform: Summits, shoulders, and
backslopes
Slope range: 2 to 4 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
Fox and similar soils: 85 percent
Dissimilar soils: 15 percent