description Jeptha Knob Overview
Jeptha Knob is a circular geological structure in Shelby County, Kentucky, interpreted by the U.S. Geological Survey as probably resulting from a meteoroid impact. It is about 14,000 feet in diameter and contains an uplifted, brecciated central area surrounded by concentric and radial faults and a down-dropped outer belt. The site is an eroded impact structure rather than a preserved bowl-shaped crater, so its geology is read from displaced and fractured sedimentary rocks.
[USGS report](https://pubs.usgs.gov/pp/p1151h/structure.html).
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