[meteorite-list] CRE ages of Nakhlites and NWA 998

From: bernd.pauli_at_paulinet.de <bernd.pauli_at_meteoritecentral.com>
Date: Sat Nov 11 15:41:50 2006
Message-ID: <DIIE.0000006800001133_at_paulinet.de>

Maybe the nakhlites underwent a(nother) high temperature event (collision?)
while floating in space. Maybe this event influenced the cosmogenic nuclides
of 38Ar in a different way than those of 4He and 21Ne. Maybe one of the radio-
genic clocks was thus (partially) reset. I don't know if such a *p a r t i a l*
resetting is possible. Maybe this high temperature event led to a preferential
loss of argon while the NWA 998 nakhlite was able to retain its amount of radio-
genic helium and neon. Nothing to back it up with, ... only guessing.

Bernd
Received on Sat 11 Nov 2006 03:39:05 PM PST