VOLCANO-CLIMATE INTERACTIONS DURING THE PALEOCENE-EOCENE THERMAL MAXIMUM: ASSESSING THE IMPACT OF THE NORTH ATLANTIC IGNEOUS PROVINCE FROM THE FUR FORMATION, DENMARK (Invited Presentation)
Here we present the results of three stratigraphic logs through the Fur Formation, spanning the initiation of the PETM to completely post-PETM conditions (~300 kyr). We use high precision U-Pb dating of magmatic zircons found in tephra layers to estimate the mean deposition rate at Fur and to improve the timing and duration of the PETM. Detailed chemostratigraphic logs of δ13C (TOC) and δ15N values are used to place the PETM and later carbon isotope excursions within this improved absolute timeframe. Measurements of Hg concentrations within the sediments are used to assess the overall activity of the NAIP at this time. Comparisons of δ13C values between this study and other PETM sections suggests that part of the post-PETM sequence may be missing from Fur, either because of glaciotectonism or a depositional hiatus. There is a positive correlation between the largest tephra layers (#-33 and #+19) and the largest perturbations to the carbon isotopes, suggesting that a causal relationship is plausible, although there may be a local depositional effect on organic carbon preservation to consider. These results indicate that the Fur Formation is of key importance for furthering our understanding of the relationship between NAIP volcanism and Eocene hyperthermal events.