Question

giving ice core who ever tell me when this event ends​

Answer 1

Answer:

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800,000 years

Ice core records allow us to generate continuous reconstructions of past climate, going back at least 800,000 years

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Answer 2

Answer:

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Ice cores are unique with their entrapped air inclusions enabling direct records of past changes in atmospheric trace-gas composition. Preliminary data indicate the Vostok ice-core record extends through four climate cycles, with ice slightly older than 400 kyr (Petit et al. 1997, 1999)

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