Geochemistry of rare earth elements in the mid-late Quaternary sediments of the western Philippine Sea and their paleoenvironmental significance

查看全文 作　　者：XU [1]ZhaoKai;LI [1]TieGang;WAN [1]ShiMing;YIN [1]XueBo;JIANG [1]FuQing;SUN [1]HanJie;JinYong [2]CHOI;DhongIl [3]LIM

机构地区：[1]Key Laboratory of Marine Geology and Environment,Institute of Oceanology,Chinese Academy of Sciences;[2]Department of Oceanography,Kunsan National University;[3]South Sea Institute,Korea Institute of Ocean Science and Technology

出　　处：《Science China Earth Sciences》索引2014年第57卷第4期,共11页

基　　金：supported by the Public Science and Technology Research Funds Projects of the Ocean;State Oceanic Administration of the People’s Republic of China(Grant No.201005003);the National Natural Science Foundation of China(Grant Nos.41376064,41230959,41106043,and 41076033);the National Basic Research Program of China(Grant No.2007CB815903) 摘　　要：Based on a δ18O chronology,rare earth elements(REE) and other typical elements in sediments from core MD06-3047 in the western Philippine Sea were analyzed to constrain the provenances of the sediments and investigate quantitative changes in the Asian eolian input to the study area over the last 700 ka.Among the competing processes that might affect REE compositions,sediment provenance is the most important one.Provenance analysis suggests that the study sediments have two provenance end-members;local volcanic sources are dominant,and eolian dust from the Asian continent has a smaller contribution.During glacial periods,eolian input to the western Philippine Sea was enhanced.In contrast,material supply from local volcanics increased during interglacial periods.Changes in eolian input to the study area were probably related to the strength of the East Asian winter monsoon(EAWM) as well as aridity in the Asian continent on an orbital time scale,and were partly influenced by local control factors on shorter time scales.Therefore,we propose that the present study expands the application of the REE-based method for quantitatively estimating the eolian component from the mid-latitude northern Pacific to the low-latitude western Pacific.Additionally,the study preliminarily confirms the influence of EAWM-transported eolian material on sedimentation in the western Philippine Sea since 700 ka. 关键词：第四纪沉积物西菲律宾海稀土元素地球化学特征古环境意义东亚冬季风亚洲大陆时间尺度

相关文献

参考文献（59）
引证文献（10）
耦合文献（133）

参考文献(59)

引证文献(10)

耦合文献(133)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

Geochemistry of rare earth elements in the mid-late Quaternary sediments of the western Philippine Sea and their paleoenvironmental significance

参考文献(59)

引证文献(10)

耦合文献(133)

用户提示