Provenance of Surficial Sediments of the East Philippine Sea: Evidence from Rare Earth Elements
详细信息
- 责任者：Xu Zhaokai (Key Laboratory of Marine Geology and Environment ; Institute of Oceanology ; Chinese Academy of Sciences ; Qingdao 266071 ; China) ; Li Tiegang
- 刊名：Marine Geology & Quaternary Geology
- 出版年：2013
- 卷期：33(2)
- 关键词：海洋沉积物 ; marine sediments ; 菲律宾海 ; Philippine Sea
- 页码：p.1-7
- 图表：illus., 1 table, 31 refs.
- 分类号：0200
- issnNo：ISSN0256-1492
- isbnNo：CN37-1117/P
摘要
To further understand the provenance of the surficial sediments in the East Philippine Sea,30 samples have been analyzed for rare earth elements(REE) compositions and clay mineral assemblages.Based on the REE data and a simplified two end-member mixing model,we quantitatively calculated the contributions of the eolian dust and the local volcanic debris to the study area.It shows that the contribution of the eolian dust to the study area is decreasing with the distance from the source area of the dust(i.e.,the Asian continent),while the contribution of the local volcanic matter shows a converse trend,with high values near the Parece Vela Trench.The results are very consistent with the conclusion from clay mineral assemblages and 87Sr/86Sr data of the studied samples and the conclusions from the two end-member mixing equation provided by published literatures.It suggests that the simplified calculation model is valid for provenance study in this region.
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