The planktic response to the latest Danian event (62.2 ma); a synthesis

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http://meetingorganizer.copernicus.org/EGU2018/EGU2018-5990.pdf
Author(s): Bornemann, André; Jehle, Sofie; Deprez, Arne; Speijer, Robert P.
Author Affiliation(s): Primary:
Bundesanstalt für Geowissenschaften und Rohstoffe, Hanover, Germany
Other:
Universität Leipzig, Germany
KU Leuven, Belgium
Volume Title: European Geosciences Union general assembly 2018
Source: Geophysical Research Abstracts, Vol.20; European Geosciences Union general assembly 2018, Vienna, Austria, April 8-13, 2018. Publisher: Copernicus GmbH on behalf of the European Geosciences Union (EGU), Katlenburg-Lindau, Germany. ISSN: 1029-7006
Note: In English
Summary: The Latest Danian Event (LDE, 62.2 Ma) is an early Paleogene transient warming event that has been identified in different ocean basins over the last decade. We compare new and previously published micropaleontological results between different sites from the Pacific Ocean (ODP 1210) to the North Atlantic (IODP Site U1407), South Atlantic (ODP Site 1262) and the Tethys (Qreiya, Egypt; Zumaia, Spain). The records cover roughly one million years across this event and reveal substantial changes in the planktic foraminfera faunal composition that are strictly related to the LDE, in addition to previously published changes in the nannofossil community as indicated by the appearance of the Lithoptychius genus also known as the 1st radiation of fasciulithids (e.g. Monechi et al., 2013, Mar. Micropaleontol.). Our results show that the planktic community strongly reacts directly to the LDE, whereas the benthic community is known to be less influenced by this event (Deprez et al., 2017, Terra Nova). Moreover, accurately dated changes of planktic foraminifera at orbitally tuned records from the Pacific and the South Atlantic has consequences for the current Paleocene planktic foraminifera stratigraphy, specifically the reliablity of Igorina albeari as the marker for the base of the P3b Subzone is questioned. [Copyright Author(s) 2018. CC Attribution 4.0 License: https://creativecommons.org/licenses/by/4.0/legalcode]
Year of Publication: 2018
Research Program: ODP Ocean Drilling Program
Key Words: 12 Stratigraphy, Historical Geology and Paleoecology; Atlantic Ocean; Cenozoic; Danian; Leg 198; Leg 208; Lower Paleocene; North Pacific; Northwest Pacific; ODP Site 1210; ODP Site 1262; Ocean Drilling Program; Pacific Ocean; Paleocene; Paleogene; Shatsky Rise; South Atlantic; Tertiary; Walvis Ridge; West Pacific
Coordinates: N321300 N321300 E1581600 E1581600
S271100 S271100 E0013500 E0013400
Record ID: 2019014059
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from European Geosciences Union, Munich, Germany