The Paleocene-Eocene boundary in a flysch sequence from Goriška Brda (Western Slovenia): Oxygen and carbon stable isotope variations
AbstractStable (δ13Ccarb., δ13Corg., δ18O) isotopic records were studied to elucidate the problem of the Paleocene/Eocene (P/E) boundary in a flysch sequence at Nožno in Goriška Brda, W. Slovenia. A remarkable disturbance in organic carbon as well as in carbonate C and O isotopic records and associated Ir anomalies provide strong evidence that something unusual happened at the time of the Paleocene-Eocene transition. The diverse character of the negative excursion of δ13C of carbonate and sedimentary organic carbon indicates a significant perturbation in the global carbon cycle and climatic changes, most probably controlled by a combination of volcanic activity and fluctuations in bioproductivity. The corresponding δ18O variability may be related to global warming due to a higher greenhouse effect and/or diagenetic alteration.
How to Cite
Dolenec, T., Pavšič, J., & Lojen, S. (2000). The Paleocene-Eocene boundary in a flysch sequence from Goriška Brda (Western Slovenia): Oxygen and carbon stable isotope variations . Geologija, 43(1), 37–42. https://doi.org/10.5474/geologija.2000.002