Geologic image in the Kentucky Geological Survey data repository.Image Name: Image Date: 1/1/2002 Category: photo_outcrop Source: Roadside Geology along the Alexandria to Ashland Highway - Kentucky 9, Kentucky 10, and U.S. 23 between Greenup Locks and Dam and Interstate 64 Format: JPG Size (MB): 0.31 Pixel Dimensions: 1480 x 1032 Description: Angular unconformity (truncated channel) between the inclined sandstone beds and overlying black shale and sandstone of the Breathitt Formation.