Planktic foraminiferal response to an early Paleocene transient warming event and biostratigraphic implications

Abstract The Latest Danian Event (LDE, ~ 62.2 Ma) is characterized by global changes in the carbon cycle as indicated two negative ? 13 C excursions of up to 1‰. These shifts are accompanied a 2–3 °C warming both surface and deep waters based on benthic planktic foraminiferal 18 O measurements, LDE has, thus, been considered so-called hyperthermal event. event lasted for 200 kyr has identified various ocean basins shallow marine settings. Here, we present compilation data from three deep-sea cores covering Pacific, North South Atlantic oceans well southern Tethyan shelf section document response foraminifera assemblages warming. In all studied successions, observe disappearance foraminifer genus Praemurica scale that took place close onset LDE. Moreover, long run, praemuricids were contemporaneously replaced morozovellids. Both decline temperature increase started between 260 before punctuated itself. this paper, propose mechanisms have controlled environmental associated with event, (1) increased activity Igneous Province acting time-scales, (2) orbital parameters resulting insolation shorter time-scales. contrast proposed muted response, community substantially impacted faunas calcareous nannofossils. Finally, our quantitative conventional approaches identifying stratigraphically important datum levels justify revision upper lower Selandian biozonation.