[meteorite-list] Example of Lipping and direction stumper. TAKE2

From: Jeff Kuyken <info_at_meteoritecentral.com>
Date: Tue, 28 Jul 2009 18:58:18 +1000
Message-ID: <918DE0E8B01147C7B9D5DB5F6EA84D46_at_JeffPC>

Thanks for that link Martin. I haven't seen that article for a while but
it's always an interesting read. I have a few unusual Taza pieces but the
one that really blew me away with it's "dual orientation" was this little
gem:

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

I think it shows quite a few similarities with some of the pieces you have
highlighted. I've always found this particular feature really interesting in
meteorites.

Cheers,

Jeff


----- Original Message -----
From: "Dark Matter" <freequarks at gmail.com>
To: <mccartney at blackbearddata.com>
Cc: <meteorite-list at meteoritecentral.com>
Sent: Tuesday, July 28, 2009 9:02 AM
Subject: Re: [meteorite-list] Example of Lipping and direction stumper.
TAKE2


> 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 Tue 28 Jul 2009 04:58:18 AM PDT