Re: The Universal Mind

From: John Monrad (jrmonrad_at_att.net.invalid)
Date: 07/22/04 

Date: Thu, 22 Jul 2004 18:03:33 +0000 (UTC)

On Thu, 22 Jul 2004 17:27:43 +0000 (UTC), Pepe le Pew posted in article
<opsbju37f46l3ybx@news.myjoi.net>...
> On Thu, 22 Jul 2004 08:03:01 +0000 (UTC), Richard Forrest
> <richard@plesiosaur.com> wrote:
>
> ...
> > The truth of the matter is that, although a paper was published
> > suggesting that the oxygen content of the atmosphere was higher in the
> > Cretaceous, that the methodology leading to that finding has been
> > shown to be flawed. There is no evidence of a higher oxygen content in
> > the earth's atmosphere in the past.
> >
> > RF
> >
> Hi Richard,
> Actually there is a fossil record of what the atmospheric content was
> during the cretaceous. The gas contents of ice cores drilled into the
> permanent ice cap on antarctica is the source of these records. The
> dates of these ice cores are determined by the analysis of known volcanic
> events, owing to the fact that the ice cap also traps volcanic dust.

The Cretaceous ended about 65my ago. The ice core data go back only as
far as 740,000 years: <http://www.esf.org/articles/85/nature02599.pdf> 

-- 
John Monrad

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