Provenance discrimination of last deglacial and Holocene sediments in the southwest of Cheju Island, East China Sea
Provenance discrimination of last deglacial and Holocene sediments in the southwest of Cheju Island, East China Sea
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东海济州岛西南部末次冰消期和全新世沉积物物源判别
DOI：
10.1016/j.palaeo.2015.01.016
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发表时间：
2015-03
影响因子：
3
通讯作者：
Jung Hoi-Soo
中科院分区：
文献类型：
--
作者：
Dou Yanguang;Yang Shouye;Lim Dhong-Il;Jung Hoi-Soo
东海济州岛西南部泥质沉积物的最终物源至今仍是一个谜。本研究利用稀土元素对取自泥斑的E03-6、E03-10和E03-11柱样的沉积物源进行了研究。基于稀土元素分馏参数和微量元素的判别图表明，末次冰消期（> 15 ka）沉积物主要来自古黄河，在海平面下降期间，黄河可能直接将沉积物输送到东海东北部。海侵期（15-6 ka）沉积的粗粒沉积物主要来自长江，部分来自朝鲜半岛，可能是由潮流搬运而来。高水位期（< 6 ka）沉积的粘土质沉积物主要来自今、古黄河。特别是来自黄海西南部古黄河三角洲的细粒沉积物，在沿岸流和长江淡水柱的作用下，被输送到东海东北部，并最终被困在气旋式上升流环流中。东海东北部陆源沉积物的扩散和沉积明显受与海平面变化有关的海洋环流控制。晚第四纪沉积速率的变化和强烈的河海相互作用，使其难以可靠地重建高分辨率的古环境变化的河流为主的陆架海。然而，地球化学方法可以提供重要的限制沉积物源到汇输运模式在这个典型的陆缘海。
The ultimate provenance of muddy sediment in the southwest of Cheju Island, East China Sea, remains enigmatic thus far. In this study, rare earth elements (REEs) were used to investigate sediment provenances of cores E03-6, E03-10 and E03-11 taken from the mud patch. Discrimination plots based on REE fractionation parameters and trace elements suggest that the sediments deposited during the last deglacial period (> 15 ka) were derived predominantly from the paleo-Huanghe (Yellow River) which might have delivered sediments directly into the northeastern East China Sea during the lowstand of sea level. The coarse-grained sediments deposited at transgressive stage (15–6 ka) were primarily sourced from the Changjiang (Yangtze River) and partly from the Korean Peninsula, probably transported by tidal currents. In comparison, the clayey sediments deposited at highstand stage (< 6 ka) were mostly derived from the modern and old Huanghe. In particular, the fine-grained sediments eroded from the old Huanghe Delta in the southwestern Yellow Sea can be transported to the northeast of the East China Sea by the coastal current and the Changjiang Freshwater Plume as well, and finally trapped within a cyclonic upwelling gyre. The dispersal and deposition of terrigenous sediments in the northeast of the East China Sea are remarkably controlled by the oceanic circulation related to sea level variability. The variable depositional rates and drastic river–sea interaction during the late Quaternary make it difficult to reliably reconstruct a high-resolution paleoenvironmental change in the river-dominated shelf sea. Nevertheless, geochemical approach can provide important constraints on sediment source-to-sink transport patterns in this typical pericontinental sea.
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影响因子：
2.9
作者：
Yonghong Wang;Guangxue Li;Weiguo Zhang;P. Dong
通讯作者：
Yonghong Wang;Guangxue Li;Weiguo Zhang;P. Dong
影响因子：
2.9
作者：
D. Yoo;C. W. Lee;S. Kim;J. Jin;J. Kim;H. Han
通讯作者：
D. Yoo;C. W. Lee;S. Kim;J. Jin;J. Kim;H. Han
DOI：
10.1017/9781108304160.011
发表时间：
2005
期刊：
--
影响因子：
--
作者：
通讯作者：
--
影响因子：
3.9
作者：
Hannigan, RE;Sholkovitz, ER
通讯作者：
Sholkovitz, ER
影响因子：
2.9
作者：
Liu Zhenxia;Xia Dong-xing;S. Berné;Wang Kui-yang;T. Marsset;Tang Yuxiang;J. Bourillet
通讯作者：
Liu Zhenxia;Xia Dong-xing;S. Berné;Wang Kui-yang;T. Marsset;Tang Yuxiang;J. Bourillet