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Cosmogenic ^(2.)Ne concentrations and exposure ages of summit bedrocks in the Grove Mountains,Antarctica

science china earth {2. 2010年第4期53卷 518-521页

作者： kong ping1,2.ding lin2.lai qingzhou2.& huang feixin3 1 key laboratory of the earth’s deep interior,Institute of {2. and geophysics,chinese academy of sciences,beijing 10002.,china 2.key laboratory of Continental Collision and Plateau Uplift,Institute of Tibetan Plateau Research,chinese academy of sciences,beijing 100085,china 3 Institute of Mineral Resources Research,china Metallurgical {2. Bureau,beijing 10002.,china 1. key laboratory of the {2.’s deep interior Institute of Geology and Geophysics Chinese Academy of Sciences Beijing 100029 China2. Key Laboratory of Continental Collision and Plateau Uplift Institute of Tibetan Plateau Research Chinese Academy of Sciences Beijing 100085 China3. Institute of Mineral Resources Research China Metallurgical Geology Bureau Beijing 100025 China

Various sources of 2.Ne and 2.Ne exist in surface rocks:cosmogenic,in situ nucleogenic from internal U and Th,trapped crustal nucleogenic and trapped *** paper reports the first measurement,in china,of cosmogenic 2.Ne and 2.Ne in surface *** developed a unique sample pre-treatment procedure that effectively removed inclusions inside quartz grains,and thus maximally reduced nucleogenic contributions of 2.Ne and ***-heating experiments show that concen-trations of cosmogenic 2.Ne and 2.Ne in summit bedrock samples R92.2.and R92.3 from Grove Mountains,Antarctica,are(3.83±0.87)×108 and(5.2.±0.51)×108 atoms/g,*** corresponding minimum exposure ages are 2.2.0.5 and 3.0±0.3 *** indicates that the ice sheet in East Antarctica was uncovered the crest of Mount Harding,a typical nunatak in Grove Mountains,since at least mid-Pliocene.

关键词： 2.Ne cosmogenic nuclide exposure age Antarctica Grove Mountains

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Cosmogenic 2.Ne concentrations and exposure ages of summit bedrocks in the Grove Mountains,Antarctica

Cosmogenic 21Ne concentrations and exposure ages of summit b...

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中国科学院地质与地球物理研究所第十届(2.10年度)学术年会

作者： kong ping~(1,2*),ding lin~2,lai qingzhou~2 & huang feixin~3 1 key laboratory of the earth’s deep interior,Institute of geology and geophysics,chinese academy of sciences,beijing 10002.,china 2 key laboratory of Continental Collision and Plateau Uplift,Institute of Tibetan Plateau Research,chinese academy of sciences, beijing 100085,china 3 Institute of Mineral Resources Research,china Metallurgical geology Bureau,beijing 10002.,china

Various sources of Ne and Ne exist in surface rocks:cosmogenic,in situ nucleogenic from internal II and Th,trapped crustal nucleogenic and trapped *** paper reports the first measurement,in china,of cosmogenic Ne and Ne in surface *** developed a unique sample pre-treatment procedure that effectively removed inclusions inside quartz grains,and thus maximally reduced nucleogenic contributions of Ne and ***-heating experiments show that concentrations of cosmogenic Ne and Ne in summit bedrock samples R92.2.and R92.3 from Grove Mountains,Antarctica,are (3.83±0.87)×10 and(5.2.±0.51)×10 atoms/g,*** corresponding minimum exposure ages are 2.2.0.5 and 3.0±0.3 *** indicates that the ice sheet in East Antarctica was uncovered the crest of Mount Harding,a typical nunatak in Grove Mountains,since at least mid-Pliocene.

关键词： 2.Ne cosmogenic nuclide exposure age Antarctica Grove Mountains

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