[meteorite-list] Meteorite-list Digest, Vol 138, Issue 17

From: Galactic Stone & Ironworks <meteoritemike_at_meteoritecentral.com>
Date: Thu, 16 Oct 2014 00:51:56 -0400
Message-ID: <CAKBPJW-SHZQLUG-cQe6ZE45bzQrwHg-o7T8HX7SQqTt6vBkoQA_at_mail.gmail.com>

Hi Eric,

I don't think anyone is questioning the integrity of the scientists involved.

Rather, there are two obvious problems that are raised by that single image :

1) the presence of what appears to be desert varnish on the stones - a
process not seen in meteorites from non-desert locales. Weathering in
wet climes typically produces an appearance quite different from the
glossy varnish seen on these stones.

2) the presence of two different petrologic types from the same fall.

In the case of #1, appearances can be deceiving, so that may not be
desert varnish, although it certainly looks like it. Perhaps someone
with expertise in this area can comment (i.e. Dr. Garvie).

In the case of #2, multiple types from the same fall is not unheard
of, but is very rare.

I will read the entire paper though, out of curiosity, and perhaps it
can clarify these points.

Best regards,

MikeG

PS - thanks for the link to the paper. :)

-- 
-------------------------------------------------------------
Web - http://www.galactic-stone.com
Facebook - http://www.facebook.com/galacticstone
Twitter - http://twitter.com/galacticstone
Pinterest - http://pinterest.com/galacticstone
-------------------------------------------------------------
On 10/16/14, Eric Christensen via Meteorite-list
<meteorite-list at meteoritecentral.com> wrote:
> Hi all,
>
> Pavel Spurny and his team are considered to be among the world's experts in
> instrumentally observed bolides.  Before dismissing this story as a scam
> based on a single image, you may wish to read the paper in its entirety:
>
> http://www.aanda.org/articles/aa/pdf/2014/10/aa24308-14.pdf
>
> paying special attention to the local conditions where the meteorites were
> found.  20 years of being repeatedly tilled under farmland soil in a wet
> European climate is hard on meteorites.  These were also thought to be
> meteorites that came from a violent, low-altitude disruption, so even if
> they initially had fusion crust or typical meteorite shapes, 20 years in the
> ground would have likely significantly altered their appearance.
>
> Regards,
>
> Eric Christensen
>
> ---
>
> On Wednesday, October 15, 2014 8:31 PM,
> "meteorite-list-request at meteoritecentral.com"
> <meteorite-list-request at meteoritecentral.com> wrote:
>
>
>
>
> Message: 1
> Date: Wed, 15 Oct 2014 16:55:34 -0700
> From: Michael Farmer <mike at meteoriteguy.com>
> To: MEM <mstreman53 at yahoo.com>
> Cc: Meteorite Mailing List <meteorite-list at meteoritecentral.com>
> Subject: Re: [meteorite-list] Fw: [Geology2] Meteorite fragments
>     discovered    20 years after bolide event in Czech Republic
> Message-ID: <0682F844-ABE9-497E-8703-1E0DBD612169 at meteoriteguy.com>
> Content-Type: text/plain;    charset=utf-8
>
> Sorry but fake as crap, clearly ancient NWA meteorite. Pultusk stones are
> still being 150 years after the fall and they don't even look hardly
> weathers at all, same wet climate.
> Sorry but I call a scam,
> Michael Farmer
>
> Sent from my iPad
>
>> On Oct 15, 2014, at 4:53 PM, MEM via Meteorite-list
>> <meteorite-list at meteoritecentral.com> wrote:
>>
>>
>> <www.sciencedaily.com/releases/2014/10/141014142736.htm>
>>
>> Meteorite fragments discovered 20 years after bolide event in Czech
>> Republic
>> Date: October 14, 2014
>> Source: Astronomy & Astrophysics
>> Summary: Scientists have discovered meteorite fragments 20 years after the
>> corresponding bolide
>> was seen in the skies of the Czech Republic. This discovery was made
>> possible by reanalyzing the trajectory, which moved the impact line by 330
>> meters. Interestingly, the meteorites found on the ground are of
>> different types, pointing to a parent asteroid of heterogeneous
>> composition.
>>
>>
>>
>
> ______________________________________________
>
> Visit the Archives at http://www.meteorite-list-archives.com
> Meteorite-list mailing list
> Meteorite-list at meteoritecentral.com
> https://pairlist3.pair.net/mailman/listinfo/meteorite-list
>

Received on Thu 16 Oct 2014 12:51:56 AM PDT