[meteorite-list] Example of Lipping and direction stumper. TAKE 2

From: Kashuba <mary.kashuba_at_meteoritecentral.com>
Date: Tue, 28 Jul 2009 02:25:49 -0700
Message-ID: <005501ca0f65$6649da30$32dd8e90$_at_kashuba@verizon.net>

Martin, McCartney, List,

I suggest that The lines on mt's Allende and Martin's Tazas are not
radiating but converging. I believe that the rim does not contain the flow
lines but, in a sense, produces them. I see the lines as melt that has come
around the edge of the meteorite and frozen in paths toward lower pressure.
Oops! Did a bit of metal slosh out of Martin's fine bowl at the five
o'clock position?

Of course conditions have to be just right to produce this phenomenon.
Other possibilities are nothing, just a lip, spatter, a mass of froth and
maybe spikes.

This Chergach is not as nice but it might help make my case.

http://johnkashuba.com/Pages/Meteorite%20Pages/Pictures/ChergachH5.htm

Kind regards,

- John

John Kashuba
Ontario, California




-----Original Message-----
From: meteorite-list-bounces at meteoritecentral.com
[mailto:meteorite-list-bounces at meteoritecentral.com] On Behalf Of Dark
Matter
Sent: Monday, July 27, 2009 4:02 PM
To: mccartney at blackbearddata.com
Cc: meteorite-list at meteoritecentral.com
Subject: Re: [meteorite-list] Example of Lipping and direction stumper. TAKE
2

Hi MT,

Back in July of 2003, I posted a collection of pics of oriented irons
known then as Taza in my Accretion Desk article:

http://www.meteorite-times.com/Back_Links/2003/July/Accretion_Desk.htm


I highlighted a couple of fully lipped individuals also wondering how
such a feature could form. I believe it was Jim Tobin who suggested
that the iron was spinning like a wheel parallel to the direction of
travel and the lipping produced a "tire effect" around the surface
interior which, as is especially viewable in the specimen I nicknamed
"a bowl full of flowlines" seemed to have no directional orientation
in the usual way, and in fact, has much in common with the Allende pic
you posted.

Best,

Martin




On Sun, Jul 26, 2009 at 4:00 PM, McCartney
Taylor<mccartney at blackbearddata.com> wrote:
> http://outofabluesky.com/images/stories/stoneymeteorites/allende12-7.jpg
>
> This is an Allende. I'm not sure I understand the orientation signs I see.
>
> I see a star flow line pattern which indicates this side is windward. But
the lipping on the NW side hints the side is leeward. So I'm a bit confused.
>
> Any ideas on alternate interpretations?
>
> -mt
>
>
>
> ______________________________________________
> http://www.meteoritecentral.com
> Meteorite-list mailing list
> Meteorite-list at meteoritecentral.com
> http://six.pairlist.net/mailman/listinfo/meteorite-list
>
______________________________________________
http://www.meteoritecentral.com
Meteorite-list mailing list
Meteorite-list at meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list
Received on Tue 28 Jul 2009 05:25:49 AM PDT