Features of Sedimentary Facies of the Nihewan Basin in North China: An Example from the Eastern Taiergou Section
详细信息
- 责任者：Chen Xingqiang (School of Earth Sciences and Resources ; China University of Geosciences ; Beijing 100083 ; China) ; Chi Zhenqing
- 刊名：Earth Science Frontiers
- 出版年：2012
- 卷期：19(4)
- 关键词：沉积相 ; sedimentary facies ; 河北 ; Hebei Province
- 页码：p.227-238
- 图表：7 illus., 55 refs.
- 分类号：0803
- issnNo：ISSN1005-2321
- isbnNo：CN11-3370/P
摘要
DivSummary name="EnDivSummary">///The eastern Taiergou section is located in the east of eastern Nihewan Basin in North China. The main strata of this section belong to Pleistocene and Pliocene. Pleistocene Haojiatai and Nihewan formations underlie the Malan loess and palaeosol strata, which exposed on the top of the eastern Taiergou section with 9.4 m in thickness, and overlie the Pliocene Yuxian Formation. Both sedimentary textures and lithofacies simultaneously suggest that the Haojiatai and Nihewan formations should be dominated by the delta plain and delta front subfacies deposits, with minor prodelta deposits. Paleocurrent data indicate that the source of the Pliocene Yuxian Formation should be located in the NE of the Nihewan Basin, and the Pleistocene Nihewan Formation and Haojiatai Formation should be derived from the NE-NW of the Nihewan Basin. The bottom 15 m sediments of the Nihewan Formation is not only derived from the NE source area,but also some sediments should be derived from the SSW source. It indicates that the paleogeography of the Nihewan Basin and its peripheral areas was southward-inclined.