The Age and Composition of the Martian Crust from NWA 7533
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Humayun, M. and Nemchin, A. and Grange, M. and Kennedy, A. and Zanda, B. and Hewins, R. and Lorand, J. et al. 2013. The Age and Composition of the Martian Crust from NWA 7533, in Proceedings of the 76th Annual Meeting of the Meteoritical-Society, Jul 29-Aug 7 2013, id 5198. Edmonton, Canada: Lunar and Planetary Institute.
METEORITICS & PLANETARY SCIENCE
76th Annual Meeting of the Meteoritical-Society
Department of Applied Geology
NWA 7533 is a pre-Noachian regolith breccia, containing siderophiles consistent with 5% chondritic impactor, 4.44 Ga zircons, and LILE enrichments implying a crustal thickness of 50 km established in the first 100 Ma of martian history.