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Re: K-T news

Garrison Hilliard wrote:

The recent discovery of "Silverpit," a multi-ring crater, 
2-20 kilometers wide, on the floor of the North Sea, is the *thirteenth*
impact crater associated timewise with the 65-million-year-old KTB.


 Actually, the dating is not precise IIRC.



Only
one of the thirteen is in North America: the Manson crater in Iowa. 

  I thought that was 74 Ma.



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