Rare Earth Elements Geochemistry and Its Implication for Sediment Provenance in the Beijing Plain
详细信息
- 责任者：Wei Liang (School of Water Resources and Environment ; China University of Geosciences ; Beijing 100083 ; China) ; Guo Huaming
- 刊名：Earth Science Frontiers
- 出版年：2010
- 卷期：17(6)
- 关键词：河流沉积物 ; stream sediments ; 稀土元素 ; rare earths ; 物源分析 ; provenance analysis ; 北京 ; Beijing
- 页码：p.72-80
- 图表：5 illus., 6 tables, 12 refs.
- 分类号：1400
- issnNo：ISSN1005-2321
- isbnNo：CN11-3370/P
摘要
Based on borehole logging, sediment sampling and analysis, the authors systematically evaluated the REE distribution characteristics of the sediment from different boreholes in Yongding River catchment and Chaobai River catchment of Beijing Plain. The results show that ∑REE, LREE/HREE, (La/Sm)N, and (Gd/Yb)N of sediments have significant differences between Yongding River catchment and Chaobai River catchment. REE characteristics were generally controlled by grain size of sediments. The chondrite-normalized REE patterns show LREE enrichment and weak Eu negative anomaly. The (La/Yb)N of fine fraction is a good indicator for provenance identification.