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

[Bernd V. Pauli]

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 – Krähenberg
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