[meteorite-list] Oriented meteorites and their flow lines

From: Dave Gheesling <dave_at_meteoritecentral.com>
Date: Wed, 5 Mar 2008 10:08:05 -0500
Message-ID: <D6C6D75CA22E4B6EB05DCD778FE656B4_at_meteorroom>

Bob & List,

In light of this now-interesting debate and discussion re: orientation, I
went ahead and posted another image of the anterior face with its
perimeter-encircling rollover lip:

http://www.fallingrocks.com/Collections/Millbillillie.htm

Thanks, by the way, for raising a question without getting over-emotional as
if it were sweeps week for the top soap operas ;-) I also appreciate your
kind words re: the site itself. By the way, if this one is not oriented, I
have a lot of editing to do in my catalog...

All best,

Dave

-----Original Message-----
From: meteorite-list-bounces at meteoritecentral.com
[mailto:meteorite-list-bounces at meteoritecentral.com] On Behalf Of Bob
Loeffler
Sent: Tuesday, March 04, 2008 9:51 PM
To: Meteorite-list at meteoritecentral.com
Subject: [meteorite-list] Oriented meteorites and their flow lines

Hi all,

I know what orientation is and can spot it when it's obvious, but sometimes
I just don't see it like some of you. I'm still a newbie, so I don't have
the experience yet, but when I look at some pictures on the web, I see some
signs of it but they don't truly tell me that this meteorite is definitely
oriented.

I don't want this to sound like I'm going after Dave G., because I'm not. I
think it's great what he is doing for educating the public and especially
the kids. But I saw one of his pictures on his website and I'm trying to
figure out how the meteorite was oriented in flight. The picture is of a
Millbillillie (who the heck named that place, anyway!) and you can see it in
his wonderful collection at:

 http://www.fallingrocks.com/Collections/Millbillillie.htm

The flow lines on the side facing us look good, so I can see the
orientation, but if you look just above that on the ridge and then down the
other side of the ridge, the flow lines are going in all directions.
Shouldn't they mostly be "moving away" from the point or area that was
leading in flight? Could this meteorite have been oriented for a while and
then moved one way or another so it has a new orientation (and therefore the
flow lines would also go in a different direction)? Or am I not "reading"
it correctly? :-)

Thanks and regards,

Bob

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Received on Wed 05 Mar 2008 10:08:05 AM PST