Re: [Geology2] Comet theory false: Doesn't explain Ice Age cold snap, Clovis changes, animal extinction

Good post, good thoughts!  It is hard to tell what kind of slant we are getting in the public reports.  I always wonder about what is happening behind the scenes on research about the end-Cretaceous event.  Gerta Keller thinks she has convincing evidence against the impact theory as the cause of the extinctions but sometimes she sounds more interested in knocking off the prevailing theory and making a name for herself. Ideas on that seem to go back and forth. Have you been keeping up with it?  

Clay

---In geology2@yahoogroups.com, <mstreman53@...> wrote :

  The article and headlines are not logically solid when it says the "Comet Theory is false".  The findings(of this study), Were "Chronological evidence FAILS to support claim of an isochronous widespread layer of cosmic impact indicators dated to 12,800 years ago,"

This comet theory is not false nor is it"disproved" by this followup study ( especially where another study did find markers in the YD zone)-- It says that the correlation has not been found( in this study).  In the body of the formal study it says most of the sites lie outside or are un-dateable for one reason or another-- the YD window in THIS Study. It doesn't address other studies which have found differently.

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