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Re: (Another)New Theory on Dinosaur Extinction
- To: meteorite-list@meteoritecentral.com
- Subject: Re: (Another)New Theory on Dinosaur Extinction
- From: WBranchsb <WBranchsb@aol.com>
- Date: Mon, 11 May 1998 18:34:10 EDT
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- Resent-Date: Mon, 11 May 1998 18:36:54 -0400 (EDT)
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> A rare element, iridium is found in abundance on meteorites.
> Alvarez believes a chunk of the extra-terrestrial matter hit
> Earth
> with such force it raised a suffocating dust cloud which
> spread
> iridium around the globe and shut out the sun for years.
Matt (and list),
Is iridium "found in abundance" in meteorites. I seem to remember seeing a
table somewhere which indicated that iridium is measured in ppm (parts per
million) and not percentages. Does it differ with respect the the type of
meteorite?
-Walter