[meteorite-list] Re: Wanted Meteorites with Craters

From: Jeff Kuyken <info_at_meteoritecentral.com>
Date: Sun Jun 18 04:07:17 2006
Message-ID: <000701c692a6$386d2020$6401a8c0_at_mandin4f89ypwu>

Hi Darren,

Not an impact pit. Probably an example of 'double' or 'dual' orientation
which I've seen quite a few of in SA and Taza.

http://www.meteorites.com.au/features/taza2.html

I've also got a Sikhote with a similar feature. I believe it has something
to do with the air pressure/pocket at the leading point of a stable flight
individual. Maybe any existing hollow/pit that was there before (or in
early) atmospheric entry is accentuated?!

Cheers,

Jeff


----- Original Message -----
From: Darren Garrison
To: Meteorite-list_at_meteoritecentral.com
Sent: Sunday, June 18, 2006 4:14 PM
Subject: Re: [meteorite-list] Re: Wanted Meteorites with Craters


On Sun, 18 Jun 2006 16:05:42 +1000, you wrote:

>Hi Mike,
>
>Try this page I made some time ago:
>
>http://www.meteorites.com.au/features/funkysa.html
>
>This topic has been discussed on the list before and there are a number of
>theories on how they may have occured. Personally, I believe it happened
>during mid-late stage atmospheric entry with the larger detonating pieces.
>It's odd that about 90% of the SA impact pits I've seen are on the trailing
>side of oriented individuals. I don't see how it would be possible to have
>micro-meteoroid impact pits if 90%+ of the original mass is lost through
>ablation.

What's everyone's opinion on this one?

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=6636585578

To me, the sides of the "crater" look too smooth and not like other examples
I've seen (including the ones mentioned here). Coincidental shape, or a
"crater" that has had the edges somehow "smoothed" (either atmosphericly or
during cleaning)?
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Received on Sun 18 Jun 2006 03:10:00 AM PDT