Geologic image in the Kentucky Geological Survey data repository.Image Name: The Knobs, Boyle County Image Date: 8/8/2006 Category: photo_scene Source: Carey, Dan Format: JPG Size (MB): 0.3 Pixel Dimensions: 3292 x 1396 Description: The Knobs--isolated, steep-sloping, often cone-shaped hills--dominate the horizon of southern Boyle County. They were originally continuous with the Mississippian Plateau, but were separated from the plateau by stream erosion. Many of the knobs are still capped by erosionally resistant limestones or sandstones. The sharp slopes of the Knobs are composed of shales of the 350 million year old Mississippian Borden Formation, which are more easily eroded than the overlying limestones and sandstones. The base [...]