Articles | Volume 17, issue 4
Clim. Past, 17, 1423–1442, 2021
Clim. Past, 17, 1423–1442, 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.


Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
ED: Publish subject to minor revisions (review by editor) (28 Apr 2021) by Yannick Donnadieu
AR by Frida Hoem on behalf of the Authors (18 May 2021)  Author's response    Author's tracked changes    Manuscript
ED: Publish as is (31 May 2021) by Yannick Donnadieu
Short summary
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.