Distributions of lead isotopes with grain size in aeolian deposits
Distributions of lead isotopes with grain size in aeolian deposits
复制标题
风成矿床中铅同位素随粒度的分布
DOI：
10.1111/j.1365-3121.2010.00941.x
复制
发表时间：
2010-08-01
期刊：
影响因子：
2.4
通讯作者：
Zhu, L. -P.
中科院分区：
文献类型：
--
作者：
Feng, J. -L.;Hu, Z. -G.;Zhu, L. -P.
铅（Pb）同位素是识别风尘源和重建大气环流模式的有力工具。然而，铅同位素的粒度依赖性尚未得到很好的记录。研究了4个黄土样品和1个当代降尘样品中Pb同位素的粒度效应。结果表明，各类型风成沉积物的Pb同位素随粒径变化明显，但无特定趋势。
P>Lead (Pb) isotopes are a powerful tool for identifying aeolian dust sources and reconstructing atmospheric circulation patterns. However, the grain-size dependence of Pb isotopes has not been well documented. This study demonstrates the grain-size effect on the Pb isotopes in four loess samples and one contemporary dust fall sample. The results indicate that the Pb isotopes show significant variation with grain size with no specific trend for all types of aeolian deposits. The Pb and neodymium (Nd) isotopes with grain-size fractions indicate that the potential sources of aeolian deposits from the Sichuan Basin, the Chinese Loess Plateau and the Tibetan Plateau probably differ from one another.