Distinctive Sedimentary Evolution at the East Edge of the Central Yellow Sea Mud Over the Past 45 kyr: Evidence From Detrital Mineralogy
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Le résumé fourni par la source
The central Yellow Sea Mud (CYSM) is a vital part of the coastal sand and distal mud depositional system in the South Yellow Sea (SYS). Previous studies concerning the sedimentary evolution of this area have almost exclusively concentrated on its interior during the Holocene instead of its periphery. In this study, we used a sediment core (H10), with a significantly slow sedimentary rate, to reconstruct the sedimentary evolution at the east edge of the CYSM since MIS3a (∼45 kyr). This mainly involved using detrital minerals, the chemical compositions of garnet, and grain size. The provenance of coarser sediments has remarkable Yellow River-derived characteristics, especially during MIS2 and MIS1. The sedimentary evolution was primarily controlled by hydrodynamic regimes accompanied by changes in relative sea levels (RSLs) and climates. During MIS3a, frequent RSL fluctuations and powerful tidal current erosion were responsible for two facie shifts from the neritic sea to the shore and the lower sedimentary rate in the study area. A paleo-cold water mass and muddy deposition occurred during the high RSL stages with authigenic pyrite enrichment. During MIS2, the paleo-Yellow River was distributed on the SYS and flowed through the study area. Fluvial deposition on the shelf may be eroded by the strong winter monsoon, with an extremely dry and cold climate. Since ∼9.6 kyr, intense hydrodynamic regimes, which were induced by tidal current and upwelling, were responsible for the very much thin deposition, and coarser sediments remained in the study area. Notably, combined with previously studied cores, a much more detailed and intuitional cognition for CYSM formation can be obtainedviaour special perspective: mud periphery. This study elucidates the sedimentary system evolution and mud area formation of continental shelf seas.
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Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Distinctive Sedimentary Evolution at the East Edge of the Central Yellow Sea Mud Over the Past 45 kyr: Evidence From Detrital Mineralogy
- Date Crossref
- 04/08/2022
- Éditeur
- Frontiers Media SA
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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Ministry of Natural Resources pays non établi dans la noticeOrganisme public
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First Institute of Oceanography pays non établi dans la noticeStructure de recherche
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Qingdao Institute of Marine Geology pays non établi dans la noticeStructure de recherche
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Ocean University of China pays non établi dans la noticeUniversité ou école supérieure
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Ludong University pays non établi dans la noticeUniversité ou école supérieure
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Shandong University of Science and Technology pays non établi dans la noticeUniversité ou école supérieure
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College of Marine Geosciences pays non établi dans la noticeUniversité ou école supérieure
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School of Resources and Environmental Engineering pays non établi dans la noticeUniversité ou école supérieure
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College of Earth Science and Engineering pays non établi dans la noticeUniversité ou école supérieure
Ministry of Natural Resources, First Institute of Oceanography et Qingdao Institute of Marine Geology, avec 6 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.