Geochemical characteristics of the eolian deposits in southern China, and their implications for provenance and weathering intensity
文献类型：期刊论文
| 作者 | Qiao, Yansong1,2; Hao, Qingzhen3; Peng, Shasha1; Wang, Yan1; Li, Jingwei1; Liu, Zongxiu1 |
| 刊名 | PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
 |
| 出版日期 | 2011-08-01 |
| 卷号 | 308期号:3-4页码:513-523 |
| ISSN号 | 0031-0182 |
| 关键词 | The Middle-lower Yangtze River Eolian Deposit Geochemistry Provenance Weathering Intensity |
| DOI | 10.1016/j.palaeo.2011.06.003 |
| 文献子类 | Article |
| 英文摘要 | The loess-paleosol sequences in the middle-lower reaches of the Yantgze River are valuable geological records of Quaternary environments that bear information about climate change for the subtropical zone of southern China. Type sections containing eolian deposits in this region mostly include the upper loess-soil sequence referred to as Xiashu Loess Formation, the middle Vermiculated Red Soil (VRS) and the underlying fluvial deposits or bedrock. In this study. Xiashu loess, paleosol formed in the Xiashu loess, and the VRS samples from Xuancheng (XC) and Jiujiang (JJ) sections were analyzed for their elemental (major and trace elements) and isotopic (Sm-Nd) geochemistry and compared with Pleistocene loess and paleosol samples from the Chinese Loess Plateau (CLP) in northern China. The results show an overall similarity in geochemical characteristics between the southern China loess and the average UCC, indicating that the dust materials were derived from well-mixed sedimentary protoliths which had undergone numerous upper crustal recycling processes. In comparison with the loess of northern China, the eolian deposits in southern China have higher TiO2, Zr, Hf and lower Ba concentrations, higher TiO2/Al2O3, U/Pb,Th/Pb and lower Ba/Rb, Zr/Hf, Eu/Eu*, Ce/Yb, Eu/Yb ratios, and lower epsilon(Nd)(0) values with relatively greater range. These features coincide with the complicated source rock compositions in the middle-lower Yangtze River, which suggests local sources for the eolian deposits in this region. The eolian deposits in southern China have experienced the intermediate K removal weathering stage, Ca, Sr, Na, Mg and K are the main mobile elements in the weathering process. In comparison with the Xiashu Loess Formation, the VRS has greater depletion of Na, Mg, K and Mn, indicating a stronger weathering intensity or perhaps a longer period of weathering. (C) 2011 Elsevier B.V. All rights reserved. |
| WOS关键词 | LOESS-PALEOSOL SEQUENCE ; NORTHERN CHINA ; PALEOCLIMATIC SIGNIFICANCE ; CONTINENTAL-CRUST ; SEDIMENTARY-ROCKS ; XIASHU LOESS ; RED-EARTH ; PLATEAU ; ORIGIN ; MAGNETOSTRATIGRAPHY |
| WOS研究方向 | Physical Geography ; Geology ; Paleontology |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE BV |
| WOS记录号 | WOS:000294396900021 |
| 资助机构 | Geological Survey Program(1212010741403) ; Geological Survey Program(1212010741403) ; National Natural Science Foundation of China(40472088) ; National Natural Science Foundation of China(40472088) ; Basic Research Foundation of Institute of Geomechanics(DZLXJK200711) ; Basic Research Foundation of Institute of Geomechanics(DZLXJK200711) ; Geological Survey Program(1212010741403) ; Geological Survey Program(1212010741403) ; National Natural Science Foundation of China(40472088) ; National Natural Science Foundation of China(40472088) ; Basic Research Foundation of Institute of Geomechanics(DZLXJK200711) ; Basic Research Foundation of Institute of Geomechanics(DZLXJK200711) ; Geological Survey Program(1212010741403) ; Geological Survey Program(1212010741403) ; National Natural Science Foundation of China(40472088) ; National Natural Science Foundation of China(40472088) ; Basic Research Foundation of Institute of Geomechanics(DZLXJK200711) ; Basic Research Foundation of Institute of Geomechanics(DZLXJK200711) ; Geological Survey Program(1212010741403) ; Geological Survey Program(1212010741403) ; National Natural Science Foundation of China(40472088) ; National Natural Science Foundation of China(40472088) ; Basic Research Foundation of Institute of Geomechanics(DZLXJK200711) ; Basic Research Foundation of Institute of Geomechanics(DZLXJK200711) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/73994]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Qiao, Yansong |
| 作者单位 | 1.Chinese Acad Geol Sci, Inst Geomech, Beijing 100081, Peoples R China 2.Key Lab Neotecton Movement & Geohazard, Beijing 100081, Peoples R China 3.Chinese Acad Sci, Key Lab Cenozo Geol & Environm, Inst Geol & Geophys, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Qiao, Yansong,Hao, Qingzhen,Peng, Shasha,et al. Geochemical characteristics of the eolian deposits in southern China, and their implications for provenance and weathering intensity[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2011,308(3-4):513-523. |
| APA | Qiao, Yansong,Hao, Qingzhen,Peng, Shasha,Wang, Yan,Li, Jingwei,&Liu, Zongxiu.(2011).Geochemical characteristics of the eolian deposits in southern China, and their implications for provenance and weathering intensity.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,308(3-4),513-523. |
| MLA | Qiao, Yansong,et al."Geochemical characteristics of the eolian deposits in southern China, and their implications for provenance and weathering intensity".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 308.3-4(2011):513-523. |
入库方式： OAI收割
来源：地质与地球物理研究所
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