Carbon dating ice samples

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Methane records in particular are used to synchronize deep ice core records. This page was last edited on 6 Aprilat Figure TS. Its coming!! There are two important fractionation processes:

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Ice core basics

References 1. These tephra layers are therefore independent maker horizons ; geochemically identical tephra in two different ice cores indicate a time-synchronous event. Kipfstuhl, F. Encyclopedia of Quaternary Science. Ice is lost at the edges of the glacier to icebergsor to summer melting, and the overall shape of the glacier does not change much with time. For the ice itself, we can study right up to the present snow surface, and we usually do high resolution snow pit studies in the soft topmost few meters hard to drill a snow core! Galactic cosmic rays produce 10 Be in the atmosphere at a rate that depends on the solar magnetic field.

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