[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]
Global Warming and Mass Extinctions
About his Permian-Triassic thread... If it hasn't been mentioned
already, everyone go and buy October's Scientific American. The article
of interest is entitled Impact from the Deep, and it discusses many of
the questions I've seen come up in the Triassic-Permian thread... and
not just for the Permian extinction, but also for the end Triassic and
the end Devonian and the end Ordivician. A nice comparison with the KT
is presented as well, showing without a doubt, that the mechanisms for
the KT vs the mechanisms of the other Big 4 were completely different.
And just my two cents here... but this theory is a winner. I complained
many times about over generalizing these extinction events... that is,
naming the bolt from the heavens the reason for all of them.... You
know... Blame it on an asteroid/comet... It used to be the popular
thing to do.
I guess after you really take a cold hard look at what evidence
actually exists and what said evidence is actually saying, things just
end up not as simplistic as most thought.
Check out the new AOL. Most comprehensive set of free safety and
security tools, free access to millions of high-quality videos from
across the web, free AOL Mail and more.