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FW: SNCs & Mars

Sometimes it's oddities in the scientific record that keep on haunting
us and challenge our long-cherished paradigms; for instance, John A.
O'Keefe's research on tektite origins remains very controversial yet
extremely intriguing!  He's made me reconsider a lunar origin for at
least some of these stones based on geochemistry which doesn't jive with
terrestrial rocks (and just because we've sampled a hand full of surface
rocks on the Moon reveals very little about what's down below).

Lou Varricchio

> -----Original Message-----
> From:	M [SMTP:mhmeteorites@geocities.com]
> Sent:	Wednesday, May 13, 1998 8:56 PM
> To:	meteorite-list@meteoritecentral.com
> Subject:	Re: SNCs & Mars
> 
> These are good points about the SNC's and the Lunar rocks. Just to add
> complication, there are igneous rocks on earth (I know of several
> locations
> in Colorado) that appear to have no known source (note I say "known").
> However by looking at their gas compositions we surmise that they came
> from
> a particular locality with a similar composition.  Same scenario goes
> for
> the SNC's. We may never be sure, even when we return samples if those
> rocks
> actually originated from Mars. But for now, Mars is a "best guess" and
> it
> gives us directions in which to go. Anyway, just my 2 cents.
> 
> Best wishes,
> Matt Morgan