Late Cenozoic Ice-Volume Changes in Antarctica Inferred from Cosmogenic Nuclide Measurements

这一奖项是为了支持一项为期一年的研究，以完成对根据上一笔赠款(DPP-8917581)获得的样本进行分析的研究。将进行的分析包括对在南极洲收集的岩石样品进行加速器质谱仪(AMS)测年，以进行曝光年龄测定。这项工作将加强目前对过去700万年干旱山谷和邻近地形地质史的了解，这段时间可以获得目前正在测量的同位素混合物。还将建造一个专门用于为钙-41分析准备陆地样品的样品制备列车，以便将这种同位素添加到目前正在对这些样品测量的一套同位素中(铍-10、铝26、氯-36和碳-14)。

This award is for support of a one year study to complete analyses of samples obtained under a previous grant (DPP-8917581). The analyses to be performed include accelerator mass spectrometric (AMS) dating of rock samples collected in Antarctica for exposure age dating. This work will enhance current understanding of the geologic history of the Dry Valleys and adjacent terrain during the past 7 million years, the period of time accesssible to the mix of isotopes currently being measured. A sample preparation train dedicated to preparing terrestrial samples for calcium-41 analyses will also be constructed to allow the addition of this isotope to the suite of isotopes currently being measured on these samples (Beryllium-10, Aluminum 26, Chlorine-36, and Carbon-14).