DOI: 10.1016/j.palaeo.2015.01.016
论文题名: Provenance discrimination of last deglacial and Holocene sediments in the southwest of Cheju Island, East China Sea
作者: Dou Y. ; Yang S. ; Lim D.-I. ; Jung H.-S.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2015
卷: 422 起始页码: 25
结束页码: 35
语种: 英语
英文关键词: East China Sea
; Late Quaternary
; Rare earth element
; River
; Sediment provenance
英文摘要: 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. © 2015 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/69015
Appears in Collections: 过去全球变化的重建
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作者单位: Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology, Ministry of Land and Resources, Qingdao Institute of Marine Geology, Qingdao, China; State Key Laboratory of Marine Geology, Tongji University, Shanghai, China; South Sea Research Institute, Korean Institute of Ocean Science and Technology, 391 Jangmok-ri Jangmok-myun, Geoje, South Korea; Marine Environments and Conservation Research Division, Korean Institute of Ocean Science and Technology, Ansan, P.O. Box 29, Seoul, South Korea
Recommended Citation:
Dou Y.,Yang S.,Lim D.-I.,et al. Provenance discrimination of last deglacial and Holocene sediments in the southwest of Cheju Island, East China Sea[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2015-01-01,422