[meteorite-list] Re: Wanted Meteorites with Craters

From: Gerald Flaherty <grf2_at_meteoritecentral.com>
Date: Sun Jun 18 09:12:13 2006
Message-ID: <00ac01c692d8$c5b51cd0$6402a8c0_at_Dell>

Wow Jeff! That's remarkable. Thanks for sharing.
Jerry
----- Original Message -----
From: "Jeff Kuyken" <info_at_meteorites.com.au>
To: "Mike Bandli" <fuzzfoot_at_comcast.net>;
<Meteorite-list_at_meteoritecentral.com>
Sent: Sunday, June 18, 2006 2:05 AM
Subject: Re: [meteorite-list] Re: Wanted Meteorites with Craters


> 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.
>
> I contacted someone who was into ballistic science once to see if they
> were
> able to determine what sort of masses and velocities would be required to
> produce these features but they never got around to it. Maybe someone on
> this list is able to do it or knows someone who can?
>
> Cheers,
>
> Jeff
>
>
> ----- Original Message -----
> From: Mike Bandli
> To: Meteorite-list_at_meteoritecentral.com
> Sent: Sunday, June 18, 2006 1:35 PM
> Subject: [meteorite-list] Re: Wanted Meteorites with Craters
>
>
> I have received several replies from people who misunderstood my original
> post and wanted to clarify what I was looking for. By stating 'craters'
> several people thought I simply meant regmaglypts or thumbprints - this is
> not what I meant.
>
> I am looking for meteorites with actual micrometeoroid impact
> craters/pits.
> These are meteorites that while re-entering or in space had collisions
> with
> micrometeoroids and exhibit an actual impact crater with a splash rim.
> There
> is a great example on Geoff Notkins page here:
>
> http://www.aerolite.org/gallery/sikhote-alin-266-4.htm
>
> and
>
> http://www.aerolite.org/gallery/sikhote-alin-impact-pits.htm
>
> If you don't have any for sale I would still love to get some photos of
> examples of micrometeoroid craters on meteorites.
>
> Thanks!
> Mike Bandli
>
>
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Received on Sun 18 Jun 2006 09:11:54 AM PDT