Articles | Volume 17, issue 4
Clim. Past, 17, 1423–1442, 2021
https://doi.org/10.5194/cp-17-1423-2021
Clim. Past, 17, 1423–1442, 2021
https://doi.org/10.5194/cp-17-1423-2021

Research article 02 Jul 2021

Research article | 02 Jul 2021

Temperate Oligocene surface ocean conditions offshore of Cape Adare, Ross Sea, Antarctica

Frida S. Hoem et al.

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Cited articles

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We present new offshore palaeoceanographic reconstructions for the Oligocene (33.7–24.4 Ma) in the Ross Sea, Antarctica. Our study of dinoflagellate cysts and lipid biomarkers indicates warm-temperate sea surface conditions. We posit that warm surface-ocean conditions near the continental shelf during the Oligocene promoted increased precipitation and heat delivery towards Antarctica that led to dynamic terrestrial ice sheet volumes in the warmer climate state of the Oligocene.