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

doi:10.1130/G35724.1

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

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Abstract

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 language	English
Pages (from-to)	767-770
Number of pages	4
Journal	Geology
Volume	42
Issue number	9
Early online date	14 Jul 2014
DOIs	https://doi.org/10.1130/G35724.1
Publication status	Published - 2014

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title = "Paleocene-Eocene warming and biotic response in the epicontinental West Siberian Sea",

abstract = "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.",

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AU - Frieling, Joost

AU - Iakovleva, Alina I.

AU - Reichart, Gert Jan

AU - Aleksandrova, Galina N.

AU - Gnibidenko, Zinaida N.

AU - Schouten, Stefan

AU - Sluijs, Appy

PY - 2014

Y1 - 2014

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AB - 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.

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JO - Geology

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IS - 9

ER -

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

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