Perturbations environnementales au cours du Silurien

The project focuses on understanding the rate of change associated with Silurian carbon cycle perturbations by applying the tool of cyclostratigraphy to (new) proxy records. The Silurian is of special interest since it is known for its highly dynamic climate, typified by repeated extinction events associated with carbon cycle perturbations. Some of these carbon cycle perturbations resulted in some of the largest δ13C excursions of the Phanerozoic. Since we do not have good age constraints on the Silurian, it is unknown how fast the Silurian climate changed; hence, we have a poor temporal understanding of Silurian extinction events and carbon cycle perturbations. The tool of cyclostratigraphy is therefore applied to (new) proxy records from Sweden, Denmark, and Austria to better constrain Silurian climate dynamics and the associated rates of change.

Participants

Michiel Arts

Anne-Christine da Silva

References

Arts, M.C.M., Coradinni, C., Pondrelli, M., Pas, D., Da Silva, A.C. (2024): An astrochronological framework for the up-per Silurian Cellon section constructed using Monte Carlo simulations and wavelet analysis using the WaverideR package. Frontiers Sedimentology, Stratigraphy and Diagenesis, v.12. Article number 1357751. 

Arts, M. (2023) WaverideR: Extracting Signals from Wavelet Spectra. R Package