A new study on the Norian/Rhaetian boundary (Late Triassic) sampled in sections located all over the world, from both Hemispheres

An international work group, which includes IGG researchers and professors associated with the Institute, has published a study on the Norian/Rhaetian boundary (Late Triassic) sampled in sections located all
over the world, from both Hemispheres. The turnover of ammnoids, conodonts, radiolarians, bivalves, coral reef, terrestrial and marine vertebrates is recorded across the limit. These changes in biota coincide with a strong variation in the isotopic composition of carbon which implies a strong perturbations in the ocean-atmosphere system, probably linked to the emission of very large volumes of magmatic gases.

Reference: Rigo M., Onoue T., Tanner L., Lucas S.G., Godfrey L., Katz M.E., Zaffani M., Grice K., Cesar J., Yamashita D., Maron M., Tackett L.S., Campbell H., Tateo F., Concheri F., Agnini C., Chiari M., Bertinelli A.,. The Late Triassic Extinction at the Norian/Rhaetian boundary: Biotic evidence and geochemical analysis. Earth-Science Reviews (2020), doi.org/10.1016/j.earscirev.2020.103180.

For further information please contact Manuel Rigo (manuel.rigo(at)unipd(dot)it).