Geochemical characteristics and provenance analysis of rare earth elements in sediments from argillaceous region of southern Shandong peninsula
HAN Xu
HAN Zongzhu
ZHANG Yong
AI Lina
Abstract：In this paper,three columnar sediment cores in the southern waters of the Shandong peninsu-la and 19 surface sediments in four small rivers in the southern part of the Shandong peninsula were used as research objects to identify the sediment sources in the argillary region of the southern Shan-dong peninsula through systematic analysis of the geochemical characteristics of rare earth elements.According to the 210Pb test results,the sedimentation rates of Z02,Z10 and Z16 in the argy region of the southern Shandong peninsula were 0.621 cm/a,0.36 cm/a and 0.4 cm/a,respectively.The stand-ardized results of chondrites showed that the core sediments in the study area showed a negative slope right-leaning pattern of light rare earth element enrichment and a loss of heavy rare earth element.Eu was obviously negative abnormal.The results of the DF calculation of the source discriminant function showed that the contribution of the Yellow River sediment in the past 300 a was significantly reduced,and the contribution of small and medium-sized rivers in the Shandong peninsula was increased,which may be affected by the decrease of the sediment of the Yellow River into the sea.
Keywords：muddy area in southern Shandong peninsularare earth elementsprovenance analysis
Publication Date：2025-06-30
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：10( 55-64 )