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Fig. 6 | Earth, Planets and Space

Fig. 6

From: 40Ar/39Ar and cosmic ray exposure ages of plagioclase-rich lithic fragments from Apollo 17 regolith, 78461

Fig. 6

No correlation exists between 36Ar concentration and 40Ar/39Ar ages of plagioclase-rich lithic fragments. a 40Ar/39Ar ages of individual plagioclase-rich lithic fragments compared with the abundance of 36Ar. b Comparison excluding the Plag#10 fragment. A poor correlation is observed between the ages and 36Ar abundances of the fragments. The 40Ar/39Ar ages are determined after correcting measured 40Ar for non-radiogenic trapped contribution. The numbers beside the symbols represent the sample names (e.g., 10 represents sample Plag#10)

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