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Younger Age for Oldest Martian Meteorite

Younger Age for Oldest Martian Meteorite. Long Geologic History. Formation by crystal accumulation in a magma chamber. Aqueous alteration and deposition of carbonate globules. Isotopic systems, hence ages, affected by shock and alteration . Shocked and crushed by impact.

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Younger Age for Oldest Martian Meteorite

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  1. Younger Age for Oldest Martian Meteorite Long Geologic History Formation by crystal accumulation in a magma chamber Aqueous alteration and deposition of carbonate globules Isotopic systems, hence ages, affected by shock and alteration Shocked and crushed by impact

  2. Younger Age for Oldest Martian Meteorite Igneous formation age of ALH84001 is 4.09 Ga, much younger than the previously-reported Sm-Nd age of 4.50 Ga.

  3. Younger Age for Oldest Martian Meteorite Frey (2010) Next step: Reconcile igneous, impact, and alteration events recorded in ALH84001 with ages of impact basins on Mars.

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