Geologic image in the Kentucky Geological Survey data repository.Image Name: Mississippian Siltstone, Greenup County Image Date: 1/4/2006 Category: photo_outcrop Source: Carey, Dan Format: JPG Size (MB): 0.8 Pixel Dimensions: 3292 x 1396 Description: Siltstone Member of the Mississippian Borden Formation in Greenup County. Photo by Dan Carey, Kentucky Geological Survey.