20230919 14032800 1.0 TRUE 500K Geologic Formations This layer contains polygons which represent the geologic formations from the 1:500,000-scale 1988 Geologic Map of Kentucky, which was compiled by Martin C. Noger (KGS) from the 1981 Geologic Map of Kentucky (Scale 1:250,000) by McDowell and others (USGS). Polygons are styled by formation/unit name. Kentucky Geological Survey