LOCATION GARLIN KYEstablished Series
TAXONOMIC CLASS: Loamy, carbonatic, mesic, shallow Rendollic Eutrudepts
TYPICAL PEDON: Garlin loam, on a southwest facing convex slope in a pasture. (Colors are for moist soil. When described in March 1991 the soil was slightly dry.)
Ap--0 to 6 inches; very dark grayish brown (10YR 3/2) loam; weak fine granular structure; friable; common fine roots throughout; slightly effervescent (4 percent calcium carbonate); slightly alkaline; clear smooth boundary. (3 to 8 inches)
Bw--6 to 18 inches; light olive brown (2.5Y 5/4) loam; common medium distinct yellowish brown (10YR 5/6) and light brownish gray (2.5Y 6/2) lithochromic mottles; moderate medium subangular blocky structure; firm; common fine roots throughout; 10 percent siltstone pebbles; strongly effervescent (55 percent calcium carbonate); moderately alkaline; gradual wavy boundary. (6 to 14 inches)
Cr--18 to 23 inches; pale olive (5Y 6/4) soft weathered calcareous siltstone and shale; strongly effervescent; very strongly alkaline.
R--23 inches; calcareous siltstone.
TYPE LOCATION: Garrard County, Kentucky; 4 miles southeast of Lancaster on Kentucky Highway 39; 1600 feet southwest of Gilbert's Creek Church; USGS Lancaster Quadrangle; 37 degrees, 32 minutes, 47 seconds N. Latitude and 84 degrees, 32 minutes, 55 seconds W. Longitude; NAD 27.
RANGE IN CHARACTERISTICS: Thickness of solum ranges from 8 to 20 inches. Depth to soft bedrock ranges from 8 to 20 inches. Depth to hard bedrock ranges from 20 to 35 inches. Rock fragments are primarily siltstone and shale and range from 0 to 10 percent in the A horizon and 0 to 20 percent in the Bw horizon. Reaction ranges from neutral to moderately alkaline in the Ap horizon and from slightly alkaline to moderately alkaline in the Bw horizon.
The Ap horizon has hue of 10YR or 2.5Y, value of 3 to 5 (4 or 5 dry), and chroma of 2 to 4. Texture is loam or silt loam.
The Bw horizon has hue of 10YR to 5Y, value of 4 to 6, and chroma of 2 to 4. Some pedons have lithochromic mottles in shades of brown or gray. Fine-earth texture is loam, silt loam or sandy clay loam. Low chroma colors, where present, are inherited from the parent rock.
The Cr horizon is interbedded calcareous siltstone, shale and limestone. The weathered bedrock is rippable and can be dug with a spade.
COMPETING SERIES: There are no other series in this same family. The Brassfield and Sumter soils are in closely related families. Brassfield soils have bedrock at a depth of 20 to 40 inches. Sumter soils are fine-silty and thermic.
GEOGRAPHIC SETTING: Sloping to steep convex, dissected uplands with slopes of 4 to 50 percent. This soil formed in residuum weathered from interbedded calcareous siltstone, shale and sandstone, and limestone. The regolith is commonly called marly shale. The mean annual temperature ranges from 52 to 56 degrees Fahrenheit with a mean of 55 degrees. Annual precipitation ranges from 40 to 48 inches with a mean of about 45 inches.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Beasley, Brassfield, Cynthiana, Faywood and Shrouts series. Beasley, Cynthiana, Faywood and Shrouts soils have argillic horizons. Brassfield, Faywood and Shrouts soils are moderately deep. Beasley soils are deep.
DRAINAGE AND PERMEABILITY: Well drained with moderate permeability. Runoff is medium on slopes less than 20 percent and high on slopes greater than 20 percent.
USE AND VEGETATION: Most areas have been cleared and are used as pasture. Many areas are idle and are reverting to brush and scrubby woodland.
DISTRIBUTION AND EXTENT: The Outer Bluegrass region of Kentucky marginal to the Knobs region. Total extent is small.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Morgantown, West Virginia
SERIES ESTABLISHED: Garrard County, Kentucky; 1996. Source of name is combination of the names of Garrard and Lincoln Counties, Kentucky.
REMARKS: The 8/98 revision updates classification to Eutrudepts. The 4/99 revision updates the SC file (shallow family added). 2/2006 revision updates family classification changes fine-loamy to loamy.
Diagnostic horizons and features in this pedon include:
Ochric epipedon - from 0 to 6 inches (Ap horizon).
Cambic horizon - from 6 to 18 inches (Bw horizon).
Paralithic contact - 18 inches (soft bedrock at the top of the Cr horizon).
Additional Data: Reference Samples 91KY-079-1-1&2 by University of Kentucky.
MLRA=121 SIR=KY0203
Revised 7/96-DHK, SJB; 8/98&4/99-DHK