Paleocene-Eocene warming and biotic response in the epicontinental West Siberian Sea

Joost Frieling, Alina I. Iakovleva, Gert Jan Reichart, Galina N. Aleksandrova, Zinaida N. Gnibidenko, Stefan Schouten, Appy Sluijs

Research output: Contribution to journalArticleAcademicpeer-review


We present a Paleocene-Eocene (ca. 60-52 Ma) sea-surface temperature record from sediments deposited in the epicontinental West Siberian Sea. TEX86 paleothermometry indicates long-term late Paleocene (~17 °C ca. 59 Ma) to early Eocene (26 °C at 52 Ma) sea-surface warming, consistent with trends previously observed for the Southern Ocean and deep oceans. Photic zone and seafloor anoxia developed as temperatures rose by 7 °C to ~27 °C during the Paleocene-Eocene Thermal Maximum (PETM). Based on paired palynological and TEX86 data, we suggest that the minimum temperature for the proliferation of Paleocene and early Eocene members of the dinoflagellate family Wetzelielloideae, which includes the PETM marker taxon Apectodinium, was ~20 °C.

Original languageEnglish
Pages (from-to)767-770
Number of pages4
Issue number9
Early online date14 Jul 2014
Publication statusPublished - 2014


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