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Re: A really, really, really, really stupid idea. Really

----- Original Message ----- From: "Richard W. Travsky" <rtravsky@uwyo.edu>
To: <dinosaur@usc.edu>
Sent: Friday, December 21, 2007 5:31 PM
Subject: Re: A really, really, really, really stupid idea. Really

On Wed, 19 Dec 2007 GSP1954@aol.com wrote:

Some in this discussion still seem to imagine that sand sized blast debris
can be imbedded in bone surfaces or skin at substantial range from an meteoritic
explosion. Tiny particles can travel at high velocities if they are being
carried along by air that is itself an equally fast moving part of the supersonic
shock wave (shock waves are shock waves because they move faster than sound)
produced by the explosion, which are limited to the region immediately
surrounding the point source. Anything hit by high velocity microdebris in this zone
will be so severely damaged by even more obvious shock and heat that the sand
impact will be incidental. The supposedly impacted tusks and bones should be
shattered and scorched. Any living animal will be killed outright, the debris
will not be the killing agent. Once the micro-debris hits stable air it slows
down to harmless terminal velocity in well under a kilometer. Even pebble sized
objects will slow down to a 100 mph in a few kilometers. That is why being
hit by a round musket ball or grape shot at long range was not lethal.

R. Travsky responded:

I was curious about the force needed to pierce tusks but the above renders
that moot.


Yes but this sounds like GSP is saying that the event West et al postulate (Mammoths pelted by the fallout from some kind of impact) could NOT have happened. But the evidence seems to indicate that it did (bits of meteoric iron embedded in Mammoth tusks). So something has to give. What alternative explanation of the evidence could there be?