Chemical stratigraphy of polar ice sheets--a method of dating ice cores

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Authors:Wilson, A. T.; Hendy, C. H.
Volume Title:Journal of glaciology
Source:Journal of glaciology. 27(95). United Kingdom. P.3-9. ISSN: 0022-1430
Publication Date:1981
Note:6 refs. English with French and German summaries. Ant. Acc. No: 26478. CRREL Acc. No: 36003330
Abstract:Studies of the chemical stratigraphy in the snow near Vostok station, which is near the centre of the East Antarctic ice sheet, show that sodium exhibits annual concentration differences up to a factor of ten. Similar work on the 952 m Vostok ice core enabled accumulation rates along selected parts of the core to be determined. This in turn enables the core to be dated. The accumulation rate is this central region of the East Antarctic ice sheet for the last 50,000 years has been determined and is presented. An interesting result is that the accumulation rate during the last glacial period is only half that in post-glacial times. Results from the bottom of the core provide some evidence of a past surge in the East Antarctic ice sheet. (Auth.)
Index Terms:Ice sheet--Age determination; Ice sheet--Cores; Ice sheet--Chemistry; Ice cores; Age determination; Chemical composition; Stratigraphy; Antarctica--East Antarctica
Coordinates:S900000 S650000 E1710000 W0400000
Publication Type:journal article
Record ID:84161
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