Vredefort & Chicxulub

["James R. Cunningham" <jrccea@bellsouth.net>]

If I ever learn to spell, I'll be dangerous.

Mail Delivery Subsystem wrote:

>    ----- The following addresses had permanent fatal errors -----
> <dinousaur@usc.edu>
>
>    Jerry D. Harris wrote:
>
> >         True.  However, the more direct point is that there is evidence for
> > an impact significantly larger than Chixilub with no _global_ extinction of
> > dinosaurs.

Jim wrote:

> The Dietz article indicates that Vredefort would have been significantly
> smaller.  Perhaps as much as a couple hundred times less energy than Chicxulub
> could be expected to generate.  Would you mind passing along your references
> for your energy estimates?
>
> Jim
>
> P.S. A happy Thanksgiving to you and your family, and to all those on the list
> who read this