Pleistocene collapse of the West Antarctic ice sheet
Pleistocene collapse of the West Antarctic ice sheet
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DOI：
10.1126/science.281.5373.82
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发表时间：
1998-07-03
期刊：
影响因子：
56.9
通讯作者：
Kamb, B
中科院分区：
文献类型：
--
作者：
Scherer, RP;Aldahan, A;Kamb, B
在冰流B的南极西部冰盖下采集的一些冰川沉积物样品含有第四纪硅藻和高达每克10（8）个铍-10原子，其他样品不含第四纪硅藻，只有背景水平的铍-10（每克低于10（6）个原子）。年轻的硅藻和高浓度的铍-10下接地冰的发生表明，罗斯湾是一个开放的海洋环境后，晚更新世的海洋冰盖崩溃。
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.