Two sequences, one for aqueous alteration and one for thermal metamorphism (http://www.meteoritemarket.com/PetTypeGroup.jpg). Makes one wonder how we would classify a meteorite that is both thermally and aqueously altered...
Michael in so. Cal. IMCA 3963 On Fri, Apr 11, 2014 at 10:14 AM, Francesco Moser <[email protected]> wrote: > > Hello, I have a question about chondrites' petrological type number assigned > after the letters (like H, L, CM or CR ...). > I have just read something in internet but I think I have misunderstood > something. > > Are the numbers from 1 to 7 in sequence or there are two different > sequences: 1 to 2 - 3 to 7 ?? > 1 to 2 is for the aqueous alteration degree in carbonaceous chodrites (1 > high degree, 2 low degree) > 3 to 7 is for thermal metamorphism degree? > > > Thanks a lot > > Ciao > > <x>x<x>x<x> > Francesco > > > ______________________________________________ > > Visit the Archives at http://www.meteorite-list-archives.com > Meteorite-list mailing list > [email protected] > http://six.pairlist.net/mailman/listinfo/meteorite-list ______________________________________________ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list [email protected] http://six.pairlist.net/mailman/listinfo/meteorite-list
