Geochemical records of the sediments and their significance in Dongping Lake Area,the lower reach of Yellow River,North China

作     者：Lin-song Yu Hong-bo Liu Fang Wan Zun-fang Hu Huai-dong Luo Xiu-wen Zhang 

作者机构：Applied Nuclear Technology in Geosciences Key Laboratory of Sichuan ProvinceChengdu Universtity of TechnologyChengdu 610059China College of Earth SciencesChengdu University of TechnologyChengdu 610059China Shandong Institute of Geophysical and Geochemical ExplorationJinan 250013China 

出 版 物：《Journal of Groundwater Science and Engineering》 (地下水科学与工程（英文版）)

年 卷 期：2021年第9卷第2期

页      面：140-151页

学科分类：070902[理学-地球化学] 0709[理学-地质学] 081803[工学-地质工程] 07[理学] 08[工学] 0818[工学-地质资源与地质工程] 

基　　金：This study was supported by Opening Fund of Provincial Key Lab of Applied Nuclear Techniques in Geosciences(No.201904) Key Scientific and Technological Project(No.KY201957)of Shandong Bureau of Geology and Mineral Resources 

主　　题：Dongping Lake Yellow River Sediments Organic matter Element geochemistry 

摘      要：Dongping Lake area,located in the lower reaches of Yellow River,is an ideal place to study the changes of modern river and lake sedimentary *** sediment samples of Dawen River,Yellow River,and Dongping Lake were collected,and the major elements,trace elements and organic matter geochemical composition of the samples were *** analysis,characteristic element ratio method and graphic method were used to explore the geochemical characteristics of sediments and their environmental *** results show that the contents of SiO_(2),Na_(2)O,TiO_(2) and Zr in sediments of Dawen River and Yellow River are relatively high,and the contents of iron and manganese oxides,organic matter,CaO,P2O5 and Sr in lake sediments are relatively *** reveals the differences of sedimentary environments between the rivers and the *** contents of Sr and Zr in Dawen River are affected by the rapid migration of clastic materials in the upstream carbonate source area during the flood season;the δCe,ΣREE and REE’s ratios in the sediments of the Yellow River reflect the influence of the Loess source;and the distribution of elements changes along the flow direction during the flood *** characteristics of pH,element composition and LREE&HREE fractionation of the lake sediments indicate that the sediment source is complex,and the lake environment is affected by the flood *** study shows that the geochemical content and its variation characteristics of sediments effectively reveal the sedimentary environment,material composition and characteristics of flood season of rivers and the lake in the study area.