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

From: Dark Matter <freequarks_at_meteoritecentral.com>
Date: Mon, 27 Jul 2009 16:02:06 -0700
Message-ID: <822da19a0907271602x6025a738pa557b7666483498e_at_mail.gmail.com>

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
>
>
>
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Received on Mon 27 Jul 2009 07:02:06 PM PDT