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.

引用

页码：82 / 85

页数：4

共 43 条

[1]

ALDAHAN A, IN PRESS Q SCI REV

[2] 10Be records from sediments of the Arctic Ocean covering the past 350 ka [J].