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Re: Theories on the extinction of dinosaurs



Stan Friesen said:

----- Original Message -----
From: Stanley Friesen <sarima@ix.netcom.com>
To: <Dinogeorge@aol.com>
Cc: <jbois@umd5.umd.edu>; <dinosaur@usc.edu>
Sent: Tuesday, November 23, 1999 8:35 PM
Subject: Re: Theories on the extinction of dinosaurs


..."Considering that there are some impact sites rivaling the Yucatan crater
in size with NO associated extinctions, this is, at the very least,
unproven."

    I would appreciate it if you will provide us with a reference or
references (i.e., from peer-reviewed scientific journal or journals)
substantiating this claim of an impact sites ("rivaling the Yucatan crater
in size with NO associated extinctions..."), naming the impact structure(s),
location(s), and breifly describing the criteria by which the structure(s)
are determined to be of an impact nature?

    Certainly, the energy calculated to have been involved in forming the
Chesapeake impact structure (approximately 35.5 million years of age) does
not even come close to the energy liberated in the Yucatan impact.  The
impacting body in the Chesapeake event (although the Chesapeake was yet to
be formed at the time of the impact, of course) has been estimated at 2 -
2.5 miles in diameter, compared to the maybe 6 or 6.5 -mile-diameter
impacting body said to have been involved in the Yucatan event.  Even if the
Yucatan impact involved only a 5-mile-diameter object, the comparison isn't
even very close.

    Thanks,

    Ray Stanford

--------------
May the peace of God be with you.         sarima@ix.netcom.com