Hi all -
I have always read that Serpent Mound, Ohio was built on top of an impact
rebound, but the other evening I was told that it was built on top of the
center of a collapsed volcanic caldera. While functionally it does not make any
difference, as I don't remember any shatter cones from it being offered for
sale on the list, and I am wondering.
E.P. Grondine
Man and Impact in the Americas
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