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Geochemical provenance of sediments from the northern East China Sea document a gradual migration of the Asian Monsoon belt over the past 400,000 years ArchiMer
Beny, Francois; Toucanne, Samuel; Skonieczny, Charlotte; Bayon, Germain; Ziegler, Martin.
The reconstruction of the long-term evolution of the East Asian Monsoon remains controversial. In this study, we aim to give a new outlook on this evolution by studying a 400 kyr long sediment record (U1429) from the northern East China Sea recovered during IODP Expedition 346. Neodymium isotopic ratios and rare earth element concentrations of different grain-size fractions reveal significant provenance changes of the sediments in the East China Sea between East Asian continental sources (mainly Yellow River) and sediment contributions from the Japanese Archipelago. These provenance changes are interpreted as the direct impact of sea level changes, due to the reorganization of East Asian river mouth locations and ocean circulation on the East China Sea...
Tipo: Text Palavras-chave: Monsoon; Eastern Asia; East China sea; Quaternary; Radiogenic isotopes; Neodymium; Rare earth elements.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00439/55088/56791.pdf
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