LOCATION BOONESBORO KY+IN TNEstablished Series
TAXONOMIC CLASS: Fine-loamy, mixed, mesic Fluventic Hapludolls
TYPICAL PEDON: Boonesboro silt loam--cultivated.
(Color for moist
conditions unless otherwise noted.)
Ap--0 to 7 inches; dark brown (10YR 3/3) silt loam, brown
(10YR
5/3) dry; moderate fine and medium granular structure; very friable; many roots;
neutral; gradual smooth boundary. (3 to 10 inches thick)
A--7 to 22 inches; dark brown (10YR 3/3) silt loam, brown
(10YR
5/3) dry; moderate medium granular structure; very friable; common roots;
neutral; clear smooth boundary. (0 to 16 inches
thick)
B--22 to 31 inches; brown (10YR 4/3) very gravelly silt
loam; weak
fine and medium granular structure; very friable; few roots; 50 percent coarse
fragments of limestone and chert; mildly alkaline, calcareous; abrupt smooth
boundary. (7 to 16 inches
thick)
R--31 inches; gray (N 5/0) limestone.
TYPE LOCATION: Madison County, Kentucky, 8.9 miles northeast of
Richmond, 1 1/4 miles north of Redhouse, along Kentucky Highway
388 to
junction with Stony Run; thence 1.1 miles east in the
flood plain of Stony
Run, on south side of road.
RANGE IN CHARACTERISTICS: Thickness of the solum and depth to
limestone bedrock ranges from 20 to 40 inches. The combined thickness of the Ap
and A horizons ranges from 12 to 24 inches. Thickness of the mollic epipedon
ranges from 10 to 24 inches. Limestone, chert, and siltstone fragments range
from 0 to 20
percent in the A horizons, and 15 to 75 percent in the
B
horizons. Reaction ranges from slightly acid to moderately
alkaline.
The A horizon has hue of 10YR or 7.5YR, value of 2 or 3, and
chroma of 3
or less. Textures are loam, silt loam, or silty clay loam and their gravelly or
flaggy analogues.
The B horizon has hue of 10YR or 7.5YR, values of 3 or 4, and
chroma of 2
through 4. Textures are gravelly, cherty, channery
or flaggy analogues of
silt loam, silty clay loam, loam, or clay loam. Structure is weak or moderate,
fine or medium, subangular blocky. Some pedons have C horizons 2 to 10 inches
thick with
the same colors and textures of the B horizon.
COMPETING SERIES: Bellevue
and Rossburg
are the only other
series in this family; Huntington
and Ross
series are in a
closely related family. Bellevue soils have stratified B
horizons with sand content coarser than very fine sand of 30 to 60 percent, and
depth to bedrock more than 40 inches. Rossburg soils have
solum thickness
from 24 to 60 inches, and less fragments.
Huntington soils have a solum more
than 40 inches thick, and have fewer than 5 percent coarse fragments. Ross soils
have a mollic epipedon more than 24 inches thick.
GEOGRAPHIC SETTING: Narrow flood plains, with slopes of 0 to 5
percent. The Boonesboro soils formed in local alluvium. Mean
annual
temperature ranges from 53 to 57 degrees F and the mean
annual precipitation
ranges from 44 to 52 inches.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Dunning,
Huntington,
Newark,
and Nolin soils
on flood plains, and Ashton
and
Woolper
soils of the foot slopes and stream terraces. All
are more than 40 inches to
bedrock. Also, Dunning and Newark
soils are wetter and Ashton and Woolper
soils have argillic
horizons.
DRAINAGE AND PERMEABILITY: Well drained. Runoff is medium and permeability of the A horizon is moderate, and of the B horizon rapid.
USE AND VEGETATION: Most areas are in pasture. A few are in
burley
tobacco, home gardens and hay. Original vegetation was a mixture of hardwoods
and native grasses, canes and sedges.
DISTRIBUTION AND EXTENT: Kentucky, Ohio, and Indiana. Extent is small.
MLRA OFFICE RESPONSIBLE: Lexington, Kentucky
SERIES ESTABLISHED: Madison County, Kentucky; 1971.
REMARKS: Boonesboro soils previously were mapped as Huntington, shallow phase.
Diagnostic horizons and features recognized in this pedon are:
Mollic epipedon, 0 to 22 inches, (Ap, A)
Lithic contact at 31 inches.