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IMPLICATIONS OF REE FOR PROVENANCE IN THE YALU ESTUARY AND ITS ADJACENT SEA AREA
Author(s): YAN Jie1, GAO Jianhua1, Li Jun2, BAI Fenglong2, LI Jiasheng1, CHENG Yan3
Pages: 95-
103
Year: 2010
Issue:
4
Journal: Marine Geology & Quaternary Geology
Keyword: 物源; 沉积物; 稀土元素; 制约因素; 鸭绿江;
Abstract: 通过对鸭绿江河口及近岸地区所采集的沉积物样品,分析研究了该地区沉积物REE的组成特征及分异模式,确立其地球化学参数,探讨了它的物源指示意义。结果显示,鸭绿江沉积物的REE总量较高,其REE组成分异特征与世界其他大河相类似,LREE富集,而HREE相对亏损;源岩是控制该区沉积物REE组成特征的主要因素,风化作用、粒度与重矿物等因素对其影响相对较弱;鸭绿江沉积物REE组成相对上陆壳分异很弱,表明沉积物来源于上游源岩的风化产物;此外,其REE组成/分布模式及分异参数与长江、黄河较为接近,而与韩国一些河流相差较大,因此,可作为鸭绿江入海物质组成代表,指示黄海海洋陆源沉积物物质组成。
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