Provenance discrimination of last deglacial and Holocene sediments in the southwest of Cheju Island, East China Sea SCIE SCOPUS

Cited 25 time in WEB OF SCIENCE Cited 25 time in Scopus
Title
Provenance discrimination of last deglacial and Holocene sediments in the southwest of Cheju Island, East China Sea
Author(s)
Dou, Yanguang; Yang, Shouye; Lim, Dhong-Il; Jung, Hoi-Soo
KIOST Author(s)
Lim, Dhong Il(임동일)Jung, Hoi Soo(정회수)
Publication Year
2015-03-15
Abstract
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 modem 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. (C) 2015 Elsevier B.V. All rights reserved.
ISSN
0031-0182
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/2517
DOI
10.1016/j.palaeo.2015.01.016
Bibliographic Citation
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY, v.422, pp.25 - 35, 2015
Publisher
ELSEVIER SCIENCE BV
Subject
SOUTHEASTERN YELLOW-SEA; RARE-EARTH-ELEMENTS; CONTINENTAL-SHELF; PALEOENVIRONMENTAL CHANGES; GEOCHEMICAL COMPOSITIONS; CHANGJIANG YANGTZE; MUD DEPOSIT; INNER-SHELF; OUTER SHELF; GRAIN-SIZE
Keywords
Sediment provenance; Rare earth element; East China Sea; River; Late Quaternary
Type
Article
Language
English
Document Type
Article
Publisher
ELSEVIER SCIENCE BV
Related Researcher
Research Interests

Marine Geochemistry,Paleoceanography,Marine Pollution,해양지화학,고해양학,해양오염학

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