20230919 14032800 1.0 TRUE 24K Karst Potential This layer contains polygons representing the 1:24,000-scale geologic formations, styled by karst potential. Karst potential was determined by KGS staff for each formation by a weighted matrix of lithologic characteristics detrmined for each unit: grain size, bedding thickness, %CaCO3, and % insoluble rock and minerals. The last (% insoluble rock and minerals) being weighted the most. Please note, this is unpublished and still a work in-progress. Polygons digitized from the 1:24,000 Geologic Map Series maps (original maps published by Kentucky Geological Survey - U.S. Geological Survey from 1960 to 1980). Kentucky Geological Survey