A 430 kyr record of ice-sheet dynamics and organic-carbon burial in the central Eurasian Arctic Ocean.

ABSTRACT: Late Quaternary central Arctic Ocean paleoclimatic records going beyond the last climate cycle, are still very rare. Here, we present data from a well-dated deep-sea sediment core that allow for the first time to reconstruct in detail the interrelationship between ice-sheet dynamics and organic-carbon (OC) burial in the Eurasian Basin during the last 430 kyr, and to correlate marine and terrestrial records of the Eurasian Ice Sheet (EIS) history. Using a multi-proxy approach, we demonstrate that within pulses of EIS advance and retreat during glacial to subsequent deglacial times, erosion of ancient (petrogenic) OC-rich sedimentary rocks and soils deliver sediments, further supplied onto the shelf and beyond. Down-slope and long-distance transport of the fine-grained OC-rich suspension by

SUBMITTER: Stein R 

PROVIDER: S-EPMC12019407 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature