WarmAnoxia: Les anoxies au Dévonien

The Devonian (419 – 359 Ma) greenhouse period witnessed numerous mass extinctions that are associated with ocean oxygen depletion (i.e., anoxic events). Evidence from the geological record suggests that Milankovitch cycles, which modulate the amount of incoming solar radiation and distribution thereof, played a key role in pacing ocean anoxic events. The ‘WarmAnoxia’ project integrates numerical climate modeling (UCL) with cyclostratigraphy, which specifically aims to decipher the astronomical imprint of Milankovitch cycles on sedimentary rock strata, to unravel the mechanisms behind Devonian anoxic events.

Participants

Jarno Huygh

Loic Sablon

Justin Gérard

Michel Crucifix

Anne-Christine da Silva

Amine Talih

Dhoha Boukhalfa

Hamdi Omar

References

Gérard, J., Sablon, L., Huygh, J.C., Da Silva, A.C., Pohl, A., Vérard, C., Crucifix, M. (2025): Exploring the mechanisms of Devonian oceanic anoxia: impact of ocean dynamics, palaeogeography and orbital forcing. Climate of the Past, Volume 21, issue 1, 239–260.