[meteorite-list] Dino Killer size

From: Ted Bunch <tbear1_at_meteoritecentral.com>
Date: Sun, 13 Apr 2008 09:32:33 -0700
Message-ID: <C42783B1.5CAF%tbear1_at_cableone.net>

According to Cr and Mn isotopic analyses of KTB samples, the impactor was a
carbonaceous chondrite - see report at:

http://www.lpi.usra.edu/meetings/impact2000/pdf/3041.pdf

Ted Bunch



On 4/13/08 7:48 AM, "E.P. Grondine" <epgrondine at yahoo.com> wrote:

> Hi Sterling, all -
>
>> From the article:
>
> "Another possibility is that the impacting objects
> were comets rather than asteroids, and contained much
> less osmium to begin with. But chemical traces of
> the impactors left behind in rocks and reported in
> previous studies suggest otherwise."
>
> The last I heard, the impactor was "carbonaceous
> chondrite", i.l. "comet", and K-T fossil meteorite
> showed that. Has this changed?
>
> E.P. Grondine
> Man and Impact in the Americas
>
>
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Received on Sun 13 Apr 2008 12:32:33 PM PDT