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

Autor:	Frieling, Joost, Iakovleva, Alina I., Reichart, Gert Jan, Aleksandrova, Galina N., Gnibidenko, Zinaida N., Schouten, Stefan, Sluijs, Appy, Marine palynology and palaeoceanography, Stratigraphy and paleontology, Organic geochemistry, DINOPRO: From Protist to Proxy, Dinoflagellates as signal carriers for climate and carbon cycling during past and present extreme climate transitions
Rok vydání:	2014
Předmět:	Palynology biology Dinoflagellate Geology TEX86 biology.organism_classification Seafloor spreading Paleontology Oceanography Taverne Carbon isotope excursion Photic zone Temperature record
Zdroj:	Geology, 42(9), 767. Geological Society of America
ISSN:	1943-2682 0091-7613
DOI:	10.1130/g35724.1
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7444dd4e35b3cfab039589f2bc4933ab https://doi.org/10.1130/g35724.1 Zobrazit plný text záznamu