[meteorite-list] Same day (was: New fall, Nkayi Zimbabwe)

From: Galactic Stone & Ironworks <meteoritemike_at_meteoritecentral.com>
Date: Sat, 7 Feb 2015 10:54:47 -0500
Message-ID: <CAKBPJW9ZCHHati0O2GhbXx0W-hZ_co83-O-vt0OMXdqSPizGEQ_at_mail.gmail.com>

Hi Bernd and List,

Is there any chance that meteorites which fall on the same date may be
launched paired, even if they are different types? (perhaps they
originated from a rubble-pile parent body with multiple lithologies?)

Best regards,

MikeG

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On 2/7/15, Bernd V. Pauli via Meteorite-list
<meteorite-list at meteoritecentral.com> wrote:
> Hi folks,
>
> Same day but not same year:
>
> TREIMAN A.H. (1992) Fall days of the SNC meteorites:
> Evidence for an SNC meteoroid stream, and a common site
> of origin (Meteoritics 27-1, 1992, 93-95):
>
> Abstract-Four of the SNC meteorites of putative Martian origin are falls.
> Two of these fell on October 3: Chassigny in 1815 and Zagami in 1962.
> The probability of this coincidence arising from random fall days is
> approximately 1 in 60. If this coincidence is not the result of chance, it
> suggests that some of the SNC meteorites are derived from a meteoroid
> stream. In that Chassigny and Zagami span nearly the full range of SNC
> lithologies and histories, the coincidence of fall days is consistent with
> suggestions that all of the SNCs came from a single site (impact crater)
> on their parent planet.
>
> Cheers,
>
> Bernd
>
>
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Received on Sat 07 Feb 2015 10:54:47 AM PST