Comptes Rendus

3 résultats

Marco Liuzzo; Andrea Di Muro; Andrea Luca Rizzo; Fausto Grassa; Massimo Coltorti; Magali Ader

Comptes Rendus. Géoscience, Volume 354 (2022) p. 275-298

Résumé : ... The archipelago results from intra-plate volcanism, the most recent eruptions having occurred on the youngest island of Grande Comore and on the oldest one of Mayotte. Since 2018, the eastern submarine flank of Mayotte has been the site of one of the largest recent eruptive events on Earth in terms of erupted lava volume. On land, the most recent volcanic activity occurred in Holocene on the eastern side of Mayotte, corresponding to the small Petite Terre Island, where two main and persistent gas seep areas are present (Airport Beach, namely BAS, and Dziani Dzaha intracrateric lake). ...


Pierre Cadeau; Didier Jézéquel; Alexis Groleau; Andrea Di Muro; Magali Ader

Comptes Rendus. Géoscience, Volume 354 (2022) p. 299-316

Résumé : ... Since May 2018, an unexpected long and intense seismic crisis started offshore Mayotte (Indian Ocean, France). This ongoing seismic sequence is associated with the birth of a newly discovered submarine volcano 50 km east of Petite Terre. Here, we investigate the indirect impact of this crisis on the stability of an atypical ecosystem located in Mayotte, the Dziani Dzaha Lake. ...


Carole Berthod; Jean-Christophe Komorowski; Lucia Gurioli; Etienne Médard; Patrick Bachèlery; Pascale Besson; Pauline Verdurme; Oryaëlle Chevrel; Andrea Di Muro; Aline Peltier; Jean-Luc Devidal; Sophie Nowak; Isabelle Thinon; Pierre Burckel; Samia Hidalgo; Christine Deplus; Benoît Loubrieu; Delphine Pierre; Sylvain Bermell; Mathilde Pitel-Roudaut; Yvan Réaud; Sacha Fouchard; Manon Bickert; Anne Le Friant; Fabien Paquet; Nathalie Feuillet; Stephan L. Jorry; Yves Fouquet; Emmanuel Rinnert; Cécile Cathalot; Elodie Lebas

Comptes Rendus. Géoscience, Volume 354 (2022) p. 195-223

Résumé : ... L’éruption au large de Mayotte a été intensément surveillée en appliquant des méthodes similaires aux éruptions sub-aériennes. Une étude pétrologique et géochimique des échantillons dragués couplée à de nombreux relevés bathymétriques, nous a permis de suivre l’évolution du magma au cours de l’éruption. ...