[meteorite-list] Fw: [Geology2] Meteorite fragments discovered 20 years after bolide event in Czech Republic

From: Anne Black <impactika_at_meteoritecentral.com>
Date: Wed, 15 Oct 2014 21:30:09 -0400
Message-ID: <8D1B6F7DAC2E6D7-730-2E813_at_webmail-m263.sysops.aol.com>

For those of you who asked, there is now a picture of an Haxtun slice
with one of those inclusions on my site. Sorry, not a great picture, I
sold it long ago.
http://www.impactika.com/haxtun.jpg


Anne M. Black
www.IMPACTIKA.com
IMPACTIKA at aol.com


-----Original Message-----
From: Galactic Stone & Ironworks <meteoritemike at gmail.com>
To: Anne Black <impactika at aol.com>
Cc: mike <mike at meteoriteguy.com>; mstreman53 <mstreman53 at yahoo.com>;
meteorite-list <meteorite-list at meteoritecentral.com>
Sent: Wed, Oct 15, 2014 7:15 pm
Subject: Re: [meteorite-list] Fw: [Geology2] Meteorite fragments
discovered 20 years after bolide event in Czech Republic


Eucritic inclusions in Vaca Muerta as well. But there aren't too many
meteorites that have different specimens with different petrologic
classes, unless it's a clast or xenolith that weathered out of a host
specimen. Don't the Franconia irons fall into that latter category?

Best regards,

MikeG



On 10/15/14, Anne Black <impactika at aol.com> wrote:
> Eucritic inclusions in Haxtun, an H/L4 ordinary chondrite?
>
> First one that came to mind, but there could be others.
>
>
> Anne M. Black
> www.IMPACTIKA.com
> IMPACTIKA at aol.com
>
>
> -----Original Message-----
> From: Galactic Stone & Ironworks <meteoritemike at gmail.com>
> To: Anne Black <impactika at aol.com>
> Cc: mike <mike at meteoriteguy.com>; mstreman53 <mstreman53 at yahoo.com>;
> meteorite-list <meteorite-list at meteoritecentral.com>
> Sent: Wed, Oct 15, 2014 6:49 pm
> Subject: Re: [meteorite-list] Fw: [Geology2] Meteorite fragments
> discovered 20 years after bolide event in Czech Republic
>
>
> True, but it is quite rare. I cannot think of another example right
> off-hand. Are there any others?
>
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>
> On 10/15/14, Anne Black <impactika at aol.com> wrote:
>> Not necessarily.
>> For instance: All kinds of different lithologies in Almahata Sitta.
>>
>>
>> Anne M. Black
>> www.IMPACTIKA.com
>> IMPACTIKA at aol.com
>>
>>
>> -----Original Message-----
>> From: Galactic Stone & Ironworks <meteoritemike at gmail.com>
>> To: Anne Black <impactika at aol.com>
>> Cc: mike <mike at meteoriteguy.com>; mstreman53 <mstreman53 at yahoo.com>;
>> meteorite-list <meteorite-list at meteoritecentral.com>
>> Sent: Wed, Oct 15, 2014 6:30 pm
>> Subject: Re: [meteorite-list] Fw: [Geology2] Meteorite fragments
>> discovered 20 years after bolide event in Czech Republic
>>
>>
>> Another red flag - two different types in the same fall. An H5 and
an
>> LL3.5 would suggest two different parent bodies.
>>
>> --
>> -------------------------------------------------------------
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>>
>> On 10/15/14, Anne Black via Meteorite-list
>> <meteorite-list at meteoritecentral.com> wrote:
>>> You could also compare them to Holbrooks, still found 100+ years
> after
>>> the fall.
>>> And No, they don't look right.
>>> Not buying either.
>>>
>>>
>>> Anne M. Black
>>> www.IMPACTIKA.com
>>> IMPACTIKA at aol.com
>>>
>>>
>>> -----Original Message-----
>>> From: Michael Farmer via Meteorite-list
>>> <meteorite-list at meteoritecentral.com>
>>> To: MEM <mstreman53 at yahoo.com>
>>> Cc: Meteorite Mailing List <meteorite-list at meteoritecentral.com>
>>> Sent: Wed, Oct 15, 2014 5:55 pm
>>> Subject: Re: [meteorite-list] Fw: [Geology2] Meteorite fragments
>>> discovered 20 years after bolide event in Czech Republic
>>>
>>>
>>> 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.
>>>>
>>>>
>>>>
>>>> ________________________________
>>>>
>>>>
>>>> First three Bene?ov meteorites found in April 2011, with metal
>>> detectors. From
>>> left to
>>>> right: H5 chondrite of 1.56 g, LL3.5 chondrite of 7.72 g with
>>> achondrite
>>> clast, and LL3.5 chondrite of 1.99 g [2].
>>>> Credit: Image courtesy of Astronomy & Astrophysics
>>>>
>>>>
>>>> Astronomy & Astrophysics is publishing the spectacular discovery of
>>> 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.
>>>> Collisions of meter-sized meteoroids with Earth's atmosphere are
>>>> relatively rare, occurring about 40 times a year. They cause very
>>>> spectacular events, known as superbolides. One of the best known
> such
>>>> events, the Bene?ov bolide, occurred on 7 May 1991 at 23h 03m 46s
UT
>>>> over the Czech Republic. It was recorded during systematic
>>> photographic
>>>> observations by the European Fireball Network and certainly ended
in
>>> a
>>>> multiple meteorite fall, but no meteorite was found in the weeks
and
>>>> years after the fall, despite many attempts.
>>>> In February 2011, nearly 20 years after the event, P. Spurn? and
his
>>>> colleagues [1] measured the records again and analyzed the data
with
>>>> improved methods. This led to a new picture of the whole event with
> a
>>>> revised atmospheric trajectory and a new impact location. This
>>> allowed
>>>> the team to recover the Bene?ov meteorites, 20 years after the
fall,
>>>> exactly in the newly predicted area. It is the first time a
> meteorite
>>> is found
>>> so long after the bolide observation.
>>>> The team found four small, highly-weathered meteorites with a total
>>>> mass of 12 g. The probability that these four fragments come from
>>>> different meteoroids and were found by chance at the same place is
>>>> estimated to be 1 in 100,000 or less. Even more interestingly,
these
>>>> four meteorites are of three different mineralogical types. This
>>> means
>>>> that the Bene?ov meteoroid was heterogeneous and contained at least
>>>> three different types of material. After the Almahata Sitta fall,
>>> this
>>>> is the second time that such a heterogeneous composition has been
>>> found. It
>>> raises the possibility that a significant fraction of all asteroids
>>>> are heterogeneous and that they were strongly reprocessed by
>>> collisions
>>>> with other asteroids in the main belt.
>>>> ________________________________
>>>>
>>>> Story Source:
>>>> The above story is based on materials provided by Astronomy &
>>> Astrophysics.
>>> Note: Materials may be edited for content and length.
>>>> ________________________________
>>>>
>>>> Journal Reference:
>>>> 1. Pavel Spurn?, Jakub Haloda, Ji?? Borovi?ka, Luk?? Shrben?,
>>> Patricie
>>> Halodov?. Reanalysis of the Bene?ov bolide and recovery of polymict
>>> breccia
>>> meteorites - old mystery solved after 20 years. Astronomy &
>>> Astrophysics, 2014;
>>> 570: A39 DOI: 10.1051/0004-6361/201424308
>>>> ________________________________
>>>>
>>>>
>>>> Astronomy & Astrophysics. "Meteorite fragments discovered 20 years
>>> after
>>>> bolide event in Czech Republic." ScienceDaily. ScienceDaily, 14
>>> October
>>>> 2014. <www.sciencedaily.com/releases/2014/10/141014142736.htm>.
>>>>
>>>>
>>>>
>>>> .
>>>>
>>>> __,_._,___
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>>
>>
>>
>
>
>

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Received on Wed 15 Oct 2014 09:30:09 PM PDT