• 责任者：Guo Wei (School of Earth Sciences and Resources ; China University of Geosciences ; Beijing 100083 ; China) ; Yang Xinde
• 刊名：Journal of Geomechanics
• 出版年：2011
• 卷期：17(3)
• 关键词：碎屑沉积物 ; clastic sediments ; 内蒙古 ; Inner Mongolia
• 页码：p.295-302
• 图表：4 illus., 4 tables, 19 refs.
• 分类号：0803
• issnNo：ISSN1006-6616
• isbnNo：CN11-3672/P

Located in northern Chifeng, Inner Mongolia, the clastic sedimentary rocks of Lower Permian Yujiabeigou Formation is mainly distributed at the Inner Mongolia uplift in the northern margin of North China craton. These clastic sedimentary rocks are dominated by graywackes, and their source rocks have not been fully handling and sorting, with relatively low maturity. The results have shown that light and heavy rare earth elements differentiate distinctly, and that light rare earth elements are obvious enrichment while the heavy rare earth elements stay stable. The values of δEu vary from 0.72 to 0.99, show negative Eu anomalies particularly and are similar with NASC or PAAS distributing model, which suggest that these sediments are sourced from upper crust.