[meteorite-list] crater chains

From: Robert Verish <bolidechaser_at_meteoritecentral.com>
Date: Thu Apr 22 10:08:24 2004
Message-ID: <20020913233909.92759.qmail_at_web10403.mail.yahoo.com>

[meteorite-list] crater chains

fcressy fcressy_at_prodigy.net
Wed, 11 Sep 2002 15:01:39 -0700
--------------------------------------------------

Hello All,

Rodney wrote:

>It is purported that Manicouagan, Rochechouart, and
St Martin, which line up if the present continents are
repositioned to form Pangea as it was in the Late
Triassic 214 million years ago, with the addition of
Red Wing Creek, and Obolon', based on the similarity
of their respective ages, probably form a crater chain
created by a fragmented bolide, the other pieces of
which hit the Tethys sea to form craters subsequently
> destroyed by subduction.

I haven't read this article but have an obvious
question:
How do the authors know if there were other fragments
which hit in the Tethys sea if their subsequent
craters were destroyed by subduction?
Is it the fact that the preserved craters are x
distance apart and other fragments "should" have hit
in the Tethys sea if the pattern is to continue?
Regards to all,
Curious Frank ;-)
-----------------------
From:

-----Original Message-----
Ron Baalke [mailto:baalke_at_zagami.jpl.nasa.gov]

<http://skyandtelescope.com/news/current/article_738_1.asp>

Did a Comet Swarm Kill the Dinosaurs?
By David Tytell
Sky & Telescope
September 13, 2002


"What's more, Earth's surface is approximately 3/5
water. Therefore, if two related objects hit land,
another three should, statistically, have splashed
down in the oceans. However, the seafloor bears no
obvious trace of these -
they would have been subducted down into the mantle
long ago."
-------------------------
Bob V.


__________________________________________________
Do you Yahoo!?
Yahoo! News - Today's headlines
http://news.yahoo.com
Received on Fri 13 Sep 2002 07:39:09 PM PDT