[meteorite-list] what is the most primitve meteorite? or do we even know?

From: Dark Matter <freequarks_at_meteoritecentral.com>
Date: Tue, 15 Apr 2008 07:47:39 -0600
Message-ID: <822da19a0804150647t290f3619nd752dd321dbfbf46_at_mail.gmail.com>

Hi All,

Here's a link to Eric's site stating Vigarano as the (consistently)
oldest meteorite.

Maybe Eric can shed more light on his statement.

http://www.star-bits.com/VIGARANO.htm

If interested, here is a Meteorite Times article addressing my 61g
Vigarano slice and its acquisition.

http://www.meteorite-times.com/Back_Links/2005/August/Accretion_Desk.htm

Cheers,

Martin



On Tue, Apr 15, 2008 at 5:43 AM, <mexicodoug at aim.com> wrote:
> You're right Walter! I don't know what can be measured as "ages" for
> pre-solar grains,other than their being classified by types, and rough ages
> of incorporation of the concretions (forming meteoroids which is of interest
> for the Solar System dymanics). Who's measured the date of last supernova
> that left residue in our pre-Solar nebula?
>
> Best wishes, great health,
> Doug
>
>
>
>
> -----Original Message-----
> From: Walter Branch <waltbranch at bellsouth.net>
> To: delraygoddess at yahoo.com; meteorite-list at meteoritecentral.com;
> mexicodoug at aim.com
> Sent: Tue, 15 Apr 2008 6:42 am
> Subject: Re: [meteorite-list] what is the most primitve meteorite? or do we
> even know?
>
>
> Hi Doug,
>
> What about Tagish Lake?
>
> -Walter Branch
> ________________________
> ----- Original Message ----- From: <mexicodoug at aim.com>
> To: <delraygoddess at yahoo.com>; <meteorite-list at meteoritecentral.com>
> Sent: Tuesday, April 15, 2008 6:33 AM
> Subject: Re: [meteorite-list] what is the most primitve meteorite? or do we
> even know?
>
>
> > Hi L.A., Listees,
> >
> > Just the white powdery "CAI" material which represents a small
> >
> fraction of > Allende is the old snuff ...
>
> >
> > There are probably other carbonaceous chondrites of types similar to
> >
> the > "age" of Allende from the recent vast harvest of the deserts ... but
> I > think scientists have a hard time splitting the hairs of the first
> couple > of million years when they are just dealing with excess concretes
> that > never were cleaned during the construction of this whole cool
> neighborhood > of the Sun we live in.
>
> >
> > Bjurbole is a standard and older than the hills of the Solar Sytem,
> >
> as > well ... at least a standard to judge others: the oldies must all be >
> aroound 4,566,500,000 years old. or maybe a million more.
>
> >
> > Telling the age of a meteorite is kind of challenging since they are
> >
> > heterogenious. For example, a person is born and grows based on an >
> initial splitting of some strands of DNA. But if someone analyzed the > ends
> of your hair, the might find you older than all the men on the list > except
> Bob Haag and Ken (?), and Michael C. So how many inclusions > floating out
> there in places no one expects, I couldn't guess ... that are > older than
> old.
>
> >
> > Then, several listmembers may be older and know better,
> >
> > Best wishes and nice to see you posting,
> > Doug
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > -----Original Message-----
> > From: Leigh Anne DelRay <delraygoddess at yahoo.com>
> > To: meteorite-list at meteoritecentral.com
> > Sent: Tue, 15 Apr 2008 2:22 am
> > Subject: [meteorite-list] what is the most primitve meteorite? or do
> >
> we > even know?
>
> >
> >
> >
> > Dear Listees~
> >
> > I was wondering if anyone knows what the oldest (as in
> > most primitive) meteorite is? I was thinking it was
> > Allende, b/c it is believed to be of extra-solar
> > origin, but is there another one that is more
> > primitive than that? Is there one that is older than
> > our own solar system?
> > Thanks for letting me pick your brains.
> > ~L.A. DelRay
> >
> >
> > >
> >
> _________________________________________________________________________
>
>
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Received on Tue 15 Apr 2008 09:47:39 AM PDT