【摘 要】
：
The first study of erratic boulder exposure ages in the Grove Mountains, interior Antarctica, indicates the two erratic boulders (060131-1 and 060131-2, collect
【机 构】
：
Institute of Tibetan Plateau Research,Graduate University of the Chinese Academy of Sciences,Institu
【基金项目】
：
the National Science Fund of China;the Chinese Polar Science Strategy Research Fund
论文部分内容阅读
The first study of erratic boulder exposure ages in the Grove Mountains, interior Antarctica, indicates the two erratic boulders (060131-1 and 060131-2, collected from a typical nunataks, Zakharoff Ridge in the Grove Mountains) have 10Be minimum exposure ages of 1.24±0.11 Ma, 1.37±0.12 Ma, and 26Al ages of 0.90±0.12 Ma,0.44±0.04 Ma, respectively. Meanwhile, another erratic boulder sample 060131-4, coming from vicinal ice surface, has 10Be and 26Al minimum exposure ages of 0.47±0.3 Ma and 0.44±0.04 Ma, respectively. The exposure ages of the three erratic boulders are nearly similar to the bedrocks with the similar elevation. Thus, using the technique of in situ produced terrestrial cosmogenic nuclides, the ice sheet evolution histories in the Grove Mountains reflected by erratic boulder and bedrock exposure ages are basically consistent.
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