Pleistocene Collapse of the West Antarctic Ice Sheet
- 3 July 1998
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 281 (5373) , 82-85
- https://doi.org/10.1126/science.281.5373.82
Abstract
Some glacial sediment samples recovered from beneath the West Antarctic ice sheet at ice stream B contain Quaternary diatoms and up to 10 8 atoms of beryllium-10 per gram. Other samples contain no Quaternary diatoms and only background levels of beryllium-10 (less than 10 6 atoms per gram). The occurrence of young diatoms and high concentrations of beryllium-10 beneath grounded ice indicates that the Ross Embayment was an open marine environment after a late Pleistocene collapse of the marine ice sheet.Keywords
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