[meteorite-list] Terrestrial meteorite

[CARL ESPARZA]

Alan, With all due respect are you then saying you have doubts about "black Beauty" as well? And what are your thought on the Moon being created by an impact with earth? Would that not have caused quite a shock to moon rocks as well? Just curious. Thanks Carl

> On 07/12/2023 7:56 PM EDT ALAN RUBIN via Meteorite-list <meteorite-list at meteoritecentral.com> wrote:
> 
>  
> I discussed the possibility of terrestrial meteorites in Rubin (2015),
> Icarus 257, 221-229. Neglecting the effects of the Earth's atmosphere,
> it would take five times as much energy to launch a basaltic rock off
> the Earth as it would to launch the same mass rock off Mars. Except
> for Black Beauty, essentially every shergottite has been severely
> shocked during launch off Mars, transforming the crystalline
> plagioclase into maskelynite. (A few shergottites with no maskelynite
> were shocked-heated even more strongly.) A terrestrial basalt launched
> off Earth would be heavily shocked or completely impact melted. This
> does not seem to be the case for NWA 13188. I don't think it is
> terrestrial.
> 
> On Wed, Jul 12, 2023 at 4:36 PM Mark Hammergren via Meteorite-list
> <meteorite-list at meteoritecentral.com> wrote:
> >
> > Thirty years ago, my thesis advisor, Don Brownlee, and I talked about potential terrestrial meteorites and how their "asteroids" might be identified among the population of near-Earth objects. Unfortunately for me at the time, we decided that any strong identification would rely on details of silicate chemistry that are tough to measure through ground-based remote sensing. But we were certain that such bodies must exist.
> >
> > On the same subject, the moon will be a great place to search for terrestrial meteorites, and may prove to be the best place to investigate the conditions of early Earth. Heck, we might even find fossils.
> >
> > On Wed, Jul 12, 2023, 12:27 PM Bob King via Meteorite-list <meteorite-list at meteoritecentral.com> wrote:
> >>
> >> Mike,
> >>
> >> Go to https://www.researchgate.net/publication/361365963_Northwest_Africa_13188_A_meteorite_from_the_Earth
> >> At the top click on the blue bar that says download full text pdf. I just did it and no fee is required.
> >>
> >> Bob
> >>
> >> On Wed, Jul 12, 2023 at 9:12 AM Michael Farmer via Meteorite-list <meteorite-list at meteoritecentral.com> wrote:
> >>>
> >>> Unfortunately paywall
> >>>
> >>>
> >>> Sent from Yahoo Mail for iPhone
> >>>
> >>> On Wednesday, July 12, 2023, 2:05 AM, Albert Jambon via Meteorite-list <meteorite-list at meteoritecentral.com> wrote:
> >>>
> >>> There was a presentation at the Goldschmidt Conference in Lyon this week. Here is a link
> >>>
> >>>
> >>>
> >>> https://www.newscientist.com/article/2381928-meteorite-left-earth-then-landed-back-down-after-round-trip-to-space/
> >>>
> >>>
> >>>
> >>> Albert JAMBON
> >>>
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> 
> 
> -- 
> Alan Rubin
> Institute of Geophysics and Planetary Physics
> Department of Earth, Planetary, and Space Sciences
> University of California
> 3845 Slichter Hall
> 603 Charles Young Dr. E
> Los Angeles, CA  90095-1567
> USA
> 
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