Full-Text Search:
Home|About CNKI|User Service|中文
Add to Favorite Get Latest Update

REE Character of Sediment from the Paleo-Red River and Its Implication of Provenance

ZHAO Meng;SHAO Lei;LIANG Jian-she;QIAO Pei-jun;XIANG Xu-hong;State Key Laboratory of Marine Geology,Tongji University;CNOOC Research Institute;China National Offshore Oil Corporation Ltd.,Shenzhen Branch Company;  
The REE analysis of the sediment from six wells in Yinggehai basin in northwestern South China Sea finds out that the sediment of N4,N5and N6,located along the axis of the basin,shows positive Eu-anomalies from Late Oligocene to Pleistocene,suggesting that the parent rock should be the basic-ultrabasic metamorphic rocks and volcanic rocks within the Red river catchment;the sediment of N1and N2in the eastern basin are controlled by Hainan Island,which features negative Euanomalies;The sediment of N3in southeastern basin had been influenced by mafic provenance since Late Oligocene,causing Eu positive anomalies,before being dominated by Hainan Island in Pliocene.Both the metamorphic rocks within the Red drainage and the Middle Paleozoic metamorphic rocks along the Song Ma Fault Zone in the central-northern Vietnam,provided a large amount of basic sediment to the basin,resulting in Eu positive-anomalies in the sediment from this area.We believe that the parent rock type within the Red River drainage stayed stable from Late Oligocene to Pleistocene without any abrupt change.Therefore the event must have taken place before Late Oligocene or after Pleistocene if the Red river had been captured at all.
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©CNKI All Rights Reserved