Evidence for two intervals of enhanced Be-10 deposition in Antarctic ice during the last glacial period

Details Evidence for two intervals of enhanced Be-10 deposition in Antarctic ice during the last glacial period Evidence for two intervals of enhanced Be-10 deposition in Antarctic ice during the last glacial period

Mar 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987natur.326..273r&link_type=abstract

Nature (ISSN 0028-0836), vol. 326, March 19, 1987, p. 273-277. CNRS-CEA-supported research.

Other

104

Antarctic Regions, Beryllium 10, Deposition, Glaciology, Land Ice, Planetary Evolution, Cosmic Rays, Isotopic Enrichment, Mass Spectroscopy, Solar Terrestrial Interactions, Vertical Distribution

Scientific paper

A detailed concentration profile for Be-10 is reported for deep ice cores from Vostok, Antarctica. The results confirm a Be 'peak', lasting 1000-2000 years, at about 60,000 yr BP, and show another similar peak at about 35,000 yr BP. The latter peak has also been observed in the Dome C deep ice core. Possible sources for these peaks and their potential as stratigraphic markers are discussed.

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