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Re: Carbonates and CI chondrites: Orgueil Age
- To: meteorite-list@meteoritecentral.com
- Subject: Re: Carbonates and CI chondrites: Orgueil Age
- From: Ron Baalke <BAALKE@kelvin.jpl.nasa.gov>
- Date: Tue, 10 Feb 1998 15:27:10 GMT
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> BRANDENBURG J.E. (1996) Mars as the parent body of the CI carbonaceous
> chondrites: A further examination (Meteoritics 31, 1996, A019): =91... In
> addition, aqueous-formed minerals such as ferrous magnesite were found
> in quantity only within CIs (Orgueil age 4.5 G.y.) and ALH 84001, which
> are their approximate contemporary at 4.0-4.5 G.y....'
Brandenburg has been pushing this idea that Mars may be a possible
parent body of CI meteorites. I have met Brandenbrug he admitted that
there is evidence against his theory which he can't explain, mainly
isotope ratios of of certain elements do not support a Martian origin.
This evidence against his theory was conveniently left out of his paper.
Ron Baalke