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Skarr87 t1_ja8kwp4 wrote

Reply to comment by Undercover_in_SF in How is radioactive dating used to determine historical greenhouse gas levels and temperatures? by pog_irl

Oxygen isn’t used for dating the samples. The oxygen ratio is for temperature. The stability of this isotopes means that we can be confident they haven’t changed since being deposited. To date the cores we use layers, chemistry, and radiometric dating.

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