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Re: Atomosphere (Last of the Pterosaurs



-----Original Message-----
From: Jeff Hecht <jhecht@world.std.com>
To: dinoland@lycos.com <dinoland@lycos.com>; dbensen@gotnet.net
<dbensen@gotnet.net>; dinosaur@usc.edu <dinosaur@usc.edu>
Date: Saturday, December 02, 2000 8:46 PM
Subject: Re: Atomosphere (Last of the Pterosaurs


>At 4:05 PM -0600 12/2/00, Steve  Brusatte wrote:
>>  >makes sense that the Earth is bleeding off atmosphere, but do we really
have
>>>Mesozoic air samples?
>>
>>Keith Rigby claims that he does, although I don't know exactly what
>>he has published on it.  I interviewed him awhile back, and in my
>>process of researching I came across some articles (including one in
>>the Notre Dame Alumni Magazine, I believe) that described Rigby's
>>research on some amber specimens that had 'Mesozoic air' trapped
>>inside of them.
>
>That's been around for quite a few years, but it's dubious at best. I
>think it was reported at the 1993 GSA Annual meeting. It's not clear
>what happens when air is trapped inside amber, but some chemical
>reactions are likely, and should change the composition. Remember
>that oxygen is inherently very reactive.
>


...I see my question has been answered,...(Sorry folks, I get my messages
all at once in diary form the following morning....should have read all
corresponding posts before posting...8^)