[meteorite-list] Chondritic parent bodies

From: Dave Gheesling <dave_at_meteoritecentral.com>
Date: Wed, 9 Sep 2009 14:15:20 -0400
Message-ID: <983DD8A2B3BF4EF39F8243FF64FF3D82_at_meteorroom>

Bernd, Alan, and List,
Thank you both for the diplomatic and informative responses. While we're on
the subject, might one of you (or anyone else) expand on, say, the L/LL6
classification designation? Holbrook was recently moved from an L6 to such
a classification, and I have a few others in my collection which are not
breccias (and presumably are entirely from one parent body and not two) but
yet have this classification assigned to them...which, "by definition,"
would imply connection with both the L and LL parent bodies, presumably
anyway.
Thanks, and all best,
Dave
www.fallingrocks.com

-----Original Message-----
From: meteorite-list-bounces at meteoritecentral.com
[mailto:meteorite-list-bounces at meteoritecentral.com] On Behalf Of
bernd.pauli at paulinet.de
Sent: Wednesday, September 09, 2009 12:47 PM
To: Meteorite-list at meteoritecentral.com
Subject: [meteorite-list] Chondritic parent bodies

Hello Dave, Alan, and List,

Here is a paper that may be of interest with regard to LL chondrite parent
bodies:

Dixon E.T., Bogard D.D. and Garrison D.H. (2002) 40Ar-39Ar Chronology of LL
Chondrites (Lunar and Planetary Science XXXIII, 1114.pdf).

They even discuss *three* models:

1. The onion-shell model
2. The rubble-pile model
3. The re-assembly model


Best wishes,

Bernd



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Received on Wed 09 Sep 2009 02:15:20 PM PDT