[meteorite-list] Chelyabinsk - cosmic-ray exposure age

From: Bernd V. Pauli <bernd.pauli_at_meteoritecentral.com>
Date: Tue, 19 Mar 2013 17:26:02 +0000
Message-ID: <DIIE.0000004F00005EBD_at_10.0.100.101>

Me again with the CRE ages of eleven LL5
chondrites from Graf's article in MAPS:

08.4 ? Olivenza
11.5 ? Oberlin
13.4 ? Tuxtuac
13.8 ? Siena
14.3 ? Paragould
14.5 ? Richmond
14.8 ? Guidder
14.9 ? Kr?henberg
22.6 ? Alta?ameem
47.0 ? Selden
47.7 ? ALHA78109

Average CRE age of 11 LL5 chondrites = 31.55 Myr

Reference:

Graf Th. et al. (1994) Collisional records in LL chondrites including
noble gas data and exposure ages (Meteoritics 29-5, 1994, 643-648).

Cheers,

Bernd
Received on Tue 19 Mar 2013 01:26:02 PM PDT