Pleistocene collapse of the West Antarctic ice sheet

被引：214
|
作者：
Scherer, RP
Aldahan, A
Tulaczyk, S
Possnert, G
Engelhardt, H
Kamb, B
机构：
[1] Uppsala Univ, Dept Earth Sci, S-75236 Uppsala, Sweden
[2] CALTECH, Dept Geol & Planetary Sci, Pasadena, CA 91125 USA
[3] Uppsala Univ, Angstrom Lab, Tandem Lab, Uppsala, Sweden
来源：
SCIENCE | 1998年 / 281卷 / 5373期
关键词：
D O I：
10.1126/science.281.5373.82
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
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.
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页码：82 / 85
页数：4
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