[meteorite-list] Terrestrial meteorites on the Moon

From: Mr EMan <mstreman53_at_meteoritecentral.com>
Date: Fri, 9 May 2008 12:02:19 -0700 (PDT)
Message-ID: <663360.83240.qm_at_web51002.mail.re2.yahoo.com>

I believe that even a survivor of a fall to the surface of Luna will likely have been pulverized into regolith by the constant bombardment that reduces other moon rocks into lunar soil. Seems to me that the place to look is under the soil and under crater ejecta blankets and that will never be economical unless some sort of marker can be established to narrow the search.

Time is not on the side of meteorite survival. What were the most recent cratering events on earth that was large enough to possibly eject target rock? Chesapeake? Reis? Chuxilub? Assuming a moderate transit time that is still several tens of millions of , years on the surface.

Elton


--- On Fri, 5/9/08, Rob McCafferty <rob_mccafferty at yahoo.com> wrote:

> From: Rob McCafferty <rob_mccafferty at yahoo.com>
> Subject: Re: [meteorite-list] Terrestrial meteorites on the Moon
> To: "E.P. Grondine" <epgrondine at yahoo.com>, meteorite-list at meteoritecentral.com
> Date: Friday, May 9, 2008, 5:51 AM
> This is what I thought but Sterling did some hunting around
> and produced some numbers that I checked. Now I'm not
> sure of my maths but is seems to be the case that an object
> can leave the earth and hit the moon with only its escape
> velocity. At that speed the impact prssures are not enough
> to vapourise the impactor so it is possible to find
> fragments of terrestrial meteorite on the moon, in theory
>
>
> --- On Thu, 5/8/08, E.P. Grondine
> <epgrondine at yahoo.com> wrote:
>
> > From: E.P. Grondine <epgrondine at yahoo.com>
> > Subject: Re: [meteorite-list] Terrestrial meteorites
> on the Moon
> > To: meteorite-list at meteoritecentral.com
> > Date: Thursday, May 8, 2008, 11:44 PM
> > Hi all -
> >
> > Since the Moon has no atmosphere to slow impacting
> > bodies, whatever the source, this idea is a
> > non-starter.
> >
> > E.P. Grondine
> > Man and Impact in the Americas
> >
> >
> >
> >
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Received on Fri 09 May 2008 03:02:19 PM PDT