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Name

DECORAH

StatusProven
Country USA
CoordinatesLat. N 4319' Long.W 9146'
Diameter km 5.5
Age Ma or date 470.0
Synonyms
Remarks A 5.5 km wide impact structure found below younger sediments. There is a deposit of younger shales inside the impact structure and below shale there is breccias where planar deformation features has been found proving this impact structure.

Added 6 March 2013.
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References
Use of any material without permission is forbidden. Jarmo Moilanen - 2009-2012
All Main list Proved craters Impact layers Canditates Suggested Discredited About References Home Links www.somerikko.net