Geochemical composition and provenance of aeolian sands in the Ordos Deserts, northern China
文献类型：期刊论文
| 作者 | Liu, Qianqian1,2,3; Yang, Xiaoping4,5 |
| 刊名 | GEOMORPHOLOGY
 |
| 出版日期 | 2018-10-01 |
| 卷号 | 318页码:354-374 |
| 关键词 | Aeolian process Sediment provenance Trace element Rare earth element Fluvial process Geomorphology |
| ISSN号 | 0169-555X |
| DOI | 10.1016/j.geomorph.2018.06.017 |
| 英文摘要 | Identifying the provenance of aeolian sediments in deserts is of great importance for understanding the Earth surface processes. In this context we conducted detailed fieldwork in the Ordos Deserts (Maowusu and Kubuqi) in the middle portion of the desert belt in northern China, and measured the major, trace and rare earth elements (REE) of aeolian sands and their potential source rocks and sediments. Our results show that aeolian sands in the eastem (northeastern) and westem (southwestern) Maowusu (Mu Us) Sandy Land exhibit different degrees of mineralogical maturity and Eu/Eu* values. Thus, we interpret that these aeolian sands have different provenances, though in the same sandy land. Our data suggest that the local lacustrine sediments and sandstones are the main sources of aeolian sands in the eastern province of the Maowusu Sandy Land, while aeolian sands in the western Maowusu Sandy land and the Kubuqi Desert have the same external sources. The comparison of geocheinical compositions of sediments in the Ordos Deserts with their potential sources in adjacent regions indicates that there is no genetic linkage between the Helan Mountains, the Yinshan Mountains and the Ordos Deserts although they are not far apart. The Qilian Orogenic Belt in the northeastern margin of the Tibetan Plateau is, however, the most likely original provenance for the western Maowusu (Mu Us) Sandy Land and the Kubuqi (Hobq) Desert, but with fluvial sediments in the Ningxia-Inner Mongolian section of the Yellow River as the immediate source. In one side, our results demonstrate that dune fields that are close to each other can have significantly different source sediments. On the other hand, our work suggests that some dune fields and landforms that are far apart from one another, e.g., the Badain Jaran Desert in western Inner Mongolia, the Ordos Deserts and the fluvial sediments in Ningxia-Inner Mongolian section of the Yellow River, can share the same ultimate sources. (C) 2018 Elsevier B.V. All rights reserved. |
| WOS关键词 | QUATERNARY DUNE FIELDS ; BADAIN JARAN DESERT ; U-PB AGE ; INNER-MONGOLIA ; ISOTOPIC COMPOSITIONS ; TIBETAN PLATEAU ; TRACE-ELEMENT ; GRAINED SANDS ; LOESS PLATEAU ; YELLOW-RIVER |
| 资助项目 | National Natural Science Foundation of China[41672182] ; National Natural Science Foundation of China[41430532] ; Alexander von Humboldt Stiftung, Germany |
| WOS研究方向 | Physical Geography ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000442191600026 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | National Natural Science Foundation of China ; Alexander von Humboldt Stiftung, Germany ; National Natural Science Foundation of China ; Alexander von Humboldt Stiftung, Germany ; National Natural Science Foundation of China ; Alexander von Humboldt Stiftung, Germany ; National Natural Science Foundation of China ; Alexander von Humboldt Stiftung, Germany |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/88102]  |
| 专题 | 地质与地球物理研究所_中国科学院新生代地质与环境重点实验室 |
| 通讯作者 | Yang, Xiaoping |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Earth Sci, Beijing, Peoples R China 4.Zhejiang Univ, Sch Earth Sci, Hangzhou 310027, Zhejiang, Peoples R China 5.Heidelberg Univ, Geograph Inst, Neuenheimer Feld 348, D-69120 Heidelberg, Germany |
| 推荐引用方式 GB/T 7714 | Liu, Qianqian,Yang, Xiaoping. Geochemical composition and provenance of aeolian sands in the Ordos Deserts, northern China[J]. GEOMORPHOLOGY,2018,318:354-374. |
| APA | Liu, Qianqian,&Yang, Xiaoping.(2018).Geochemical composition and provenance of aeolian sands in the Ordos Deserts, northern China.GEOMORPHOLOGY,318,354-374. |
| MLA | Liu, Qianqian,et al."Geochemical composition and provenance of aeolian sands in the Ordos Deserts, northern China".GEOMORPHOLOGY 318(2018):354-374. |
入库方式： OAI收割
来源：地质与地球物理研究所
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