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A continuous tephrostratigraphic record from the Labrador Sea spanning the last 65 ka ArchiMer
Rutledal, Sunniva; Haflidason, Hafkidi; Berben, Sarah Mp; Griem, Lisa; Jansen, Eystein.
Volcanic ash preserved in marine sediment sequences is key for independent synchronization of palaeoclimate records within and across different climate archives. Here we present a continuous tephrostratigraphic record from the Labrador Sea, spanning the last 65.5 ka, an area and time period that has not been investigated in detail within the established North Atlantic tephra framework. We investigated marine sediment core GS16]204] 22CC for increased tephra occurrences and geochemically analysed the major element composition of tephra shards to identify their source volcano(es). In total we observed eight tephra zones, of which five concentration peaks show isochronous features that can be used as independent tie]points in future studies. The main...
Tipo: Text Palavras-chave: Marine tephra; North Atlantic; Quaternary; Tephra isochrons; Tephrochronology.
Ano: 2020 URL: https://archimer.ifremer.fr/doc/00648/76044/76980.pdf
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