geomorphology of kentucky – potential impact on land-use and watersheds william m andrews jr.,...
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![Page 1: Geomorphology of Kentucky – Potential Impact on Land-use and Watersheds William M Andrews Jr., Ph.D., P.G. Head, Geologic Mapping Section Kentucky Geological](https://reader036.vdocument.in/reader036/viewer/2022062421/56649cbf5503460f94985a49/html5/thumbnails/1.jpg)
Geomorphology of Kentucky –Potential Impact on Land-use and Watersheds
William M Andrews Jr., Ph.D., P.G.Head, Geologic Mapping Section
Kentucky Geological Survey
CPE Summer PD 2014University of KentuckyLexington, Kentucky
Monday, June 23, 2014
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Landform Regions
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Soils
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Land-Use Patterns
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Geology
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Geology &Geomorphology
Chemistry
Biology &Paleontology
Physics
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Economics
Culture &Sociology
History
Politics
Engineering &Construction
Transportation
Ecology
AgricultureLand Use
Hazards
Soils
Geotechnical
Landforms
ResourcesGeology &
Geomorphology
Hydrology
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BLUEGRASS REGION
• Calcareous shales, Outer Bluegrass (Ordovician)• Interbedded Limestones-Shales (Ordovician)• Phosphatic Limestones, Inner Bluegrass
(Ordovician)• Alluvial• Colluvial • Glacial till, northern KY (Quaternary)
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Inner Bluegrass
Outer Bluegrass
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Dominantly Limestone
Limestone and Shale
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Phosphate-rich Limestone
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Fayette County stone fences
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Franklin County distillery
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Fayette County horse farm
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Modern horse farms only in limited area
Historical records suggest wider distribution in past
Certain areas better suited for horses, geologically.
Geology of Horse Farms
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KNOBS REGION
• Calcareous gray shales (Silurian) • Acid black and gray shales (Devonian)• Dolomitic sandstones (Mississippian)• Lacustrine sediments (Quaternary)• Alluvial• Colluvial
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Berea “Skyline”
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Knobs
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SandstonePlatform
Shale and SiltstoneSlopes
Limestone Caprock
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LimestoneCaprock
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Black shale
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Diagram of Muldraugh Hill and Development of the Knobs area. Muldraugh Hill is a cuesta, or escarpment, capped with Middle Mississippian limestones and sandstones.
The Knobs are erosion remnants carved by stream erosion. Initially they may be flat-topped, but as the resistant cap is removed and softer shales and siltstones are exposed to weathering processes they take the shape of cones.
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MOUNTAIN & EASTERN COALFIELDS REGION
• Sandstones (Pennsylvanian)• Shales (Pennsylvanian)• Siltstones (Pennsylvanian)• Alluvial • Colluvial
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Harlan County coal mine
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Appalachian Plateau coal fields
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