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, <[EMAIL PROTECTED]> 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 <[EMAIL PROTECTED]> > To: [EMAIL PROTECTED]; [email protected]; > [EMAIL PROTECTED] > 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: <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]>; <[email protected]> > 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 <[EMAIL PROTECTED]> > > To: [email protected] > > 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 > > > > > > > > > > _________________________________________________________________________ > > > > ___________ > > Be a better friend, newshound, and > > know-it-all with Yahoo! Mobile. Try it now. > > > > http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ > > > ______________________________________________ > > http://www.meteoritecentral.com > > Meteorite-list mailing list > > [email protected] > > http://six.pairlist.net/mailman/listinfo/meteorite-list > > > > ______________________________________________ > > http://www.meteoritecentral.com > > Meteorite-list mailing list > > [email protected] > > http://six.pairlist.net/mailman/listinfo/meteorite-list > > > > ______________________________________________ > http://www.meteoritecentral.com > Meteorite-list mailing list > [email protected] > http://six.pairlist.net/mailman/listinfo/meteorite-list > ______________________________________________ http://www.meteoritecentral.com Meteorite-list mailing list [email protected] http://six.pairlist.net/mailman/listinfo/meteorite-list
