14C dating of polar ice

We have dated ice core samples by 14C AMS to show that this method extends other ice dating methods and enables direct comparison with 14C related climatic events found elsewhere. For the measurement we use the CO2 that was occluded together with the air at the time of ice formation. To extract the...

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Bibliographic Details
Published in:Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
Main Authors: Andree, M., Moor, E., Beer, J., Oeschger, H., Stauffer, B., Bonani, G., Hofmann, H.J., Morenzoni, E., Nessi, M., Suter, M., Wölfli, W.
Format: Article in Journal/Newspaper
Language:English
Published: Elsevier 1984
Subjects:
530 Physics
Greenland
Dye 3
Dye-3
Greenland ice core
ice core
Online Access:https://boris.unibe.ch/158471/
Description
Summary:We have dated ice core samples by 14C AMS to show that this method extends other ice dating methods and enables direct comparison with 14C related climatic events found elsewhere. For the measurement we use the CO2 that was occluded together with the air at the time of ice formation. To extract the CO2 we crush the samples with a milling cutter. For a 14C AMS measurement the CO2 content of about 10 kg of cleaned ice (0.25 cm3) has to be converted to amorphous carbon. First 14C results on the Dye 3 (Greenland) ice core are in good agreement with other age determinations.

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