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Country USA
CoordinatesLat. N 3806' Long.W 8506'
Diameter km 4.8
Age Ma or date 452.0
Remarks Diameter of 3.2 km is also mentioned.
It is suggested that iridium anomalies found in Jeptha Knob are extraterestrial in origin. Also there is structural evidences.

It is a known fact that almost all so called cryptoexplosion structures are later identified as impact structures. Jeptha Knob has be suggested to be a cryptoexplosion structures. However, no true cryptoexplosion structures is known.

CoM 1985 Graham, Bevan and Hutchison, ''Catalogue of Meteorites'', 4th Edition, (1985).
Seeger Seeger C.R., Asaro F., Michel H. and Noland A.V., ''The search for Jeptha Knob iridium, continued''. LPSC XIX
Seeger 1985 Seeger C.R., Asaro F., Michel H., Alvarez W. and Alvarez L., ''Iridium discovery at the Jeptha Knob cryptoexplosion structure, Kentucky''. Lunar and Planetary Institute (1985)
Use of any material without permission is forbidden. Jarmo Moilanen - 2009-2014
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