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| Provenance of mud sediments in the inner shelf of East China Sea since midHolocene |
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XU Fangjian1,2,3, LI Anchun2, LI Tiegang2, CHEN Shiyue1, CAO Yingchang1, DONG Chunmei1, QIU Longwei1
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(1.College of GeoResources and Information in China University of Petroleum, Qingdao 266555, China;2.Key Laboratory of Marine Geology and Environment, Institute of Oceanology, CAS, Qingdao 266071, China;3.Shandong Key Laboratory of Reservoir Geology in China University of Petroleum, Dongying 257061, China)
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| Abstract: |
| Core EC2005, located in the mud area off ZhejiangFujian coast in the inner shelf of East China Sea, was analyzed for its major and trace elements, rare earth elements (REE) and dating by 14C accelerator mass spectrometry (AMS14C). Using discriminant function, the relationship between Eu anomalies and the total REE amount, namely the δEuNΣREEs plot and a mathematical model on the quantitative provenance identification, the provenance of mud sediments in core EC2005 was discussed. The results show that the mud sediment of core EC2005 mainly derived from Yangtze River. The average contribution of Yangtzederived sediments occupied about 93.7%. No substances of Yellow River were identified in the study area. However, Yellow River materials could achieve the area near 29°N, even the more southern regions (to 27°25′ N) in historical period. The northwest of the Taiwan Strait accepted the input of Taiwan materials. Therefore, the sediment provenance of the mud area off ZhejiangFujian coast is complicated, and it is worth to further study. |
| Key words: provenance mud sediment East China Sea inner shelf Yangtze River core EC2005 |
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