The rare earth element compositions of sediments from the loess   tableland in the Liyang Plain, southern China: implications for   provenance and weathering intensity

doi:10.1007/s12665-010-0644-x

CORC > 北京大学 > 城市与环境学院

	The rare earth element compositions of sediments from the loess tableland in the Liyang Plain, southern China: implications for provenance and weathering intensity
	Mao, Longjiang ; Mo, Duowen ; Li, Minglin ; Zhou, Kunshu ; Yang, Jinghong ; Guo, Weimin
刊名	environmental earth sciences
	2011
关键词	Rare earth element Provenance Weathering intensity The Liyang Plain GEOCHEMISTRY BASIN TRACE FRACTIONATION REE PETROGENESIS CHEMISTRY PROFILES ORIGIN WATERS
DOI	10.1007/s12665-010-0644-x
英文摘要	To identify the weathering intensity and to deduce the provenance of sediments (black-brown soil and loess) from the loess tableland in the Liyang Plain is of great importance for understanding the development and origin of civilization of this critical region in China. The geochemical results show similar REE distribution patterns among sediments sampled from the YC profile in the Liyang Plain, reticulated red soils from the Dongting lake area, Xiashu loess in Zhenjiang, and loess from the Loess Plateau in China. These similarities imply a single provenance, from dust storms. REEs, especially the LREE/HREE ratio and Eu anomaly, can trace weathering intensity. Higher LREE/HREE ratios, and remarkably Eu anomalies, are present in the top loess (L(0)), Lower LREE/HREE ratios and insignificant Eu anomalies are present in black-brown soil (S(0)*) from the Liyang Plain. These demonstrate that the black-brown soils have undergone a lower intensity of weathering than the loess of YC profile. Moreover, CIA values for sediments from the YC profile provide powerful evidence to support the above result. Comparisons of analyses of the REE contents of sediments from the YC profile, of reticulated red soils from the Dongting Lake area, Xiashu loess from the Yangtze River, and loess from the Loess Plateau, clearly show the weathering intensity decreases according to the following sequence: reticulated red soil from the Dongting Lake area > sediments of YC profile from the Liyang Plain, which formed from dust storms a parts per thousand Xiashu loess from lower reach of the Yangtze River > loess from the Loess Plateau.; Environmental Sciences; Geosciences, Multidisciplinary; Water Resources; SCI(E); EI; 0; ARTICLE; 8; 1609-1617; 62
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/240306]
专题	城市与环境学院
推荐引用方式 GB/T 7714	Mao, Longjiang,Mo, Duowen,Li, Minglin,et al. The rare earth element compositions of sediments from the loess tableland in the Liyang Plain, southern China: implications for provenance and weathering intensity[J]. environmental earth sciences,2011.
APA	Mao, Longjiang,Mo, Duowen,Li, Minglin,Zhou, Kunshu,Yang, Jinghong,&Guo, Weimin.(2011).The rare earth element compositions of sediments from the loess tableland in the Liyang Plain, southern China: implications for provenance and weathering intensity.environmental earth sciences.
MLA	Mao, Longjiang,et al."The rare earth element compositions of sediments from the loess tableland in the Liyang Plain, southern China: implications for provenance and weathering intensity".environmental earth sciences (2011).