[meteorite-list] Largest 'Fall' Meteorite

From: Matt Morgan <mail_at_meteoritecentral.com>
Date: Tue, 27 Oct 2009 02:08:13 +0000
Message-ID: <1148746231-1256609377-cardhu_decombobulator_blackberry.rim.net-549058232-_at_bda677.bisx.prod.on.blackberry>

OSL dates of the Odessa crater impact breccias put it at 63 ka (Holliday et al, 2005).

Matt
Matt
----------------------
Matt Morgan
Mile High Meteorites
http://www.mhmeteorites.com
P.O. Box 151293
Lakewood, CO 80215 USA

-----Original Message-----
From: countdeiro at earthlink.net
Date: Mon, 26 Oct 2009 21:59:16
To: Frank Cressy<fcressy at prodigy.net>; Jeff Grossman<jgrossman at usgs.gov>; Meteorite-list<meteorite-list at meteoritecentral.com>
Subject: Re: [meteorite-list] Largest 'Fall' Meteorite

If the criteria includes "probably" witnessed falls... then wouldn't the winner be Canyon Diablo at 1200m diameter and 215m depth from the rim? Odessa is estimated at 210m diameter and 110m depth. I mention Odessa as it is speculated that either fall may have occured as recently as 25,000 years ago. Especially in the case of Odessa. It's pretty much settled science that we had man in these areas at 30,000 years ago. The date of existence of early man in the Western hemisphere continues to be problematical, but I remember when we thought it certain no earlier than 12,000 years ago.

Count Deiro

-----Original Message-----
>From: Frank Cressy <fcressy at prodigy.net>
>Sent: Oct 26, 2009 9:15 PM
>To: Jeff Grossman <jgrossman at usgs.gov>, Meteorite-list <meteorite-list at meteoritecentral.com>
>Subject: Re: [meteorite-list] Largest 'Fall' Meteorite
>
>I know this doesn't answer the original question, but the thread seems to have morphed into the largest "witnessed" cratering event.
>Kaali is not?officially witnessed, but it certainly could have been.
>
>The Kaali group of craters, on the Estonian island of Saaremaa,?are estimated to be only 4000 (+/- 1000) years old.
>The largest is?about 110 meters in diameter and about 22 meters deep.???Some iron fragments (Kaalijarv, IAB main group) were found associated with the craters.
>
>A link follows: http://www.7is7.com/otto/estonia/kaali.html
>
>Cheers,
>
>Frank
>
>
>
>
>________________________________
>From: Jeff Grossman <jgrossman at usgs.gov>
>To: Meteorite-list <meteorite-list at meteoritecentral.com>
>Sent: Monday, October 26, 2009 4:00:43 PM
>Subject: Re: [meteorite-list] Largest 'Fall' Meteorite
>
>Wabar may well be a witnessed fall.? It also produced a 13-m crater.
>
>jeff
>
>Jason Utas wrote:
>> Right, but I don't believe that Campo del Cielo is noted as a
>> witnessed fall.? If we're going to start listing every crater
>> associated with meteorite fragments, we're going to get a much longer
>> list.
>> The only accepted witnessed falls that have led to the formation of
>> legitimate craters are Carancas and Sikhote Alin.? Another list member
>> suggested Sterlitamak; I still believe that, according to the
>> description of the impact features found:
>>
>> http://adsabs.harvard.edu/abs/1992Metic..27R.276P
>>
>> - That this is an impact pit, not a crater.? Note the description of
>> sheer walls, etc.
>> Regards,
>> Jason
>>
>> On Mon, Oct 26, 2009 at 2:51 PM, Ted Bunch <tbear1 at cableone.net> wrote:
>>?
>>>? Rubin de Celis crater of the Campo del Cielo strewn field is a real crater
>>> - 0.04 km dia with a raised rim. - see Passc Website.
>>>
>>> Ted Bunch
>>>
>>>
>>> On 10/26/09 1:48 PM, "Jason Utas" <meteoritekid at gmail.com> wrote:
>>>
>>>? ?
>>>> Yo,
>>>> Sikhote-Alin, the largest crater at 26m in diameter.
>>>> Only two meteorites are ever known to have created real craters upon
>>>> falling; Carancas and Sikhote-Alin.
>>>> Carancas' crater measures in at 13m.
>>>> I suppose falls like Gao could have been larger in mass than Caracas,
>>>> but I don't know if we even have a good estimate of the mass of
>>>> Carancas, so perhaps someone more knowledgeable about the event could
>>>> comment; the reports I could find online conflicted drastically.
>>>> Regards,
>>>> Jason
>>>>
>>>> On Mon, Oct 26, 2009 at 1:32 PM, Greg Stanley <stanleygregr at hotmail.com>
>>>> wrote:
>>>>? ? ?
>>>>> All:
>>>>> What is the Largest "Fall" known, and what was the size of the crater made?
>>>>>
>>>>> Greg S.
>>>>>
>>>>> _________________________________________________________________
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>>?
>
>
>--
>Dr. Jeffrey N. Grossman? ? ? phone: (703) 648-6184
>US Geological Survey? ? ? ? ? fax:? (703) 648-6383
>954 National Center
>Reston, VA 20192, USA
>
>
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Received on Mon 26 Oct 2009 10:08:13 PM PDT