[meteorite-list] Terminological question: SMB vs. IMB

From: Greg Hupe <gmhupe_at_meteoritecentral.com>
Date: Fri Sep 2 09:28:03 2005
Message-ID: <072d01c5afc2$236f9a80$73105c18_at_Gregor>

Hello Jeff and List,

Thank you for the quick answers to Martin's questions.

I personally think that both terms, "Impact Melt Breccia (IMB)" and "Shock
Melt Breccia(SMB)" clearly describe these beautiful meteorites. The material
is 'shocked' by an 'impact' event.

Take care,
Greg

----- Original Message -----
From: "Jeff Grossman" <jgrossman_at_usgs.gov>
To: <meteorite-list_at_meteoritecentral.com>
Sent: Friday, September 02, 2005 9:01 AM
Subject: Re: [meteorite-list] Terminological question: SMB vs. IMB


> The Nomenclature Committee is not the arbiter of such issues. The MetBull
> is just like any other publication when it comes to the use such terms,
> the product of editing by a group of scientists, and no more or less
> authoritative than other publications.
>
> jeff
>
> At 08:36 AM 9/2/2005, Greg Hupe wrote:
>>Hello Martin and List,
>>
>>First I would like to correct statement in your email to the list:
>>"On the occasion of an ebay auction, namely NWA 2704 "SMB H4".
>>
>>NWA 2704 is a nice L3.8, S2, W2, not an H4. I believe the meteorite you
>>meant to refer to was NWA 2706 which is a beautiful shocked and melted H4.
>>
>>Here are a couple picture links of NWA 2706 showing the characteristics of
>>this beauty:
>>
>>Click here to view 48.9 gram complete slice displaying breccia
>>http://www.lunarrock.com/nwa2706/nwa2706a.jpg
>>Click here to view 48.9 gram complete slice displaying abundant metal
>>http://www.lunarrock.com/nwa2706/nwa2706b.jpg
>>
>>The term "Shock Melt Breccia" is a term used by Dr. Bunch at NAU when he
>>classified NWA 2706 for me. I am not sure if it is a new term used by the
>>NomCom or a preferred term by Dr. Bunch, or if there is a difference
>>between an IMB and a SMB. My guess is they are one in the same. I will
>>talk to him and ask these questions.
>>
>>Best regards,
>>
>>Greg Hupe
>>The Hupe Collection
>>naturesvault (eBay)
>>gmhupe_at_tampabay.rr.com
>>IMCA 2185
>>
>>----- Original Message ----- From: "Martin Altmann"
>><Altmann_at_Meteorite-Martin.de>
>>To: <meteorite-list_at_meteoritecentral.com>
>>Sent: Friday, September 02, 2005 8:04 AM
>>Subject: [meteorite-list] Terminological question: SMB vs. IMB
>>
>>
>>>Hello list,
>>>
>>>On the occasion of an ebay auction,
>>>namely NWA 2704 "SMB H4",
>>>I was asked by a collector, what the difference could be between an
>>>impact
>>>melt breccia IMB and a "shock melt breccia - SMB".
>>>Honestly I don't know the difference, as I never heard this term "SMB"
>>>before and was thinking, that all shock and melting processes in ordinary
>>>chondrites were caused by impacts.
>>> From the picture of the auction I can't tell much, as the cut surface of
>>>>the
>>>specimen is small and it's looking to me not diffrent from an IMB.
>>>Is SMB now a term of the official nomenclature and what shall I respond
>>>to
>>>the collector?
>>>
>>>Many thanks,
>>>Martin
>>>
>>>______________________________________________
>>>Meteorite-list mailing list
>>>Meteorite-list_at_meteoritecentral.com
>>>http://six.pairlist.net/mailman/listinfo/meteorite-list
>>
>>______________________________________________
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>
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Received on Fri 02 Sep 2005 09:27:59 AM PDT