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From: wv@whuts.UUCP
Newsgroups: sci.bio,sci.astro
Subject: Re: Mass extinctions
Message-ID: <1682@whuts.UUCP>
Date: Wed, 1-Apr-87 06:15:13 EST
Article-I.D.: whuts.1682
Posted: Wed Apr  1 06:15:13 1987
Date-Received: Sat, 4-Apr-87 07:42:30 EST
References: <6760@alice.uUCp> <496@uokmax.UUCP>
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Organization: AT&T Bell Laboratories, Whippany, NJ
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Xref: utgpu sci.bio:206 sci.astro:783

In article <496@uokmax.UUCP> david@uokmax.UUCP (David Lee Cox) writes:
>I really like this discussion, but am a little confused about a couple of
>things,  What would volcanoes, or meteors do that could cause mass extinctions?

I am no expert on the subject, but I have heard that if enough debris is
deposited in the upper atmosphere (possibly by volcanoes or a collision
of Earth with large meteors or an asteroid), a resulting cooling trend
could change the climate quickly enough to cause mass extinctions to take
place. If anyone could explain this further, I would like to see it 
discussed further.

							Bill