Team

DMR

Dorsal Team, Margins and Rifts

The DMR team deals with processes operating in 3 main geological environments: divergent systems, convergent systems and transforming systems.

Our efforts include understanding the functioning of oblique transformant systems (in extension or compression), the history of finite, recent and active deformation (with a focus on earthquake time series and inter-seismic loading). ), interactions with the “abnormal” mantle or the role of magmas and their spatio-temporal relationships with tectonic deformation. Our team is also developing a multidisciplinary land-sea study on the Brittany regional shipyard.    

  •  from rifting to accretion, inversion to subduction: a continuum     
  • big questions: exhumation mechanisms, tectonic-magmatism interactions, seismogenesis, inversion, incipient subduction, arcs, rollback

3 main lines of work for the five-year period 2017-2021:  

  •    divergent systems: transition to accretion, syn-magmatic rupture, deformation and seismogenesis of the dorsal, accretion vs exhumation, post-rupture evolution (breakup)
  • convergent systems: inversion of margins, remobilization of the continent-ocean transition, arcuate subductions, rollback, obliquity in convergence: partitioning     
  • transforming systems: characterization of Transducer Transform Edge Propagator (STEP-margins), deformation and seismogenesis of transformants, origin marginal trays

Team leaders

Researchers and teacher-researchers

Secondary attachment in the team
BABONNEAU Nathalie
CHAZOT Gilles
GRIGNÉ Cécile
GUENNOU Claude
HEMOND Christophe
MENIER David
RABINEAU Marina
VAN VLIET-LANOË Brigitte

PhDs

CDD and post-docs

Colleagues from the Marine Geosciences Unit at Ifremer Brest are working closely with the DMR team on projects for the period 2017-2021. In particular: Antonio Cattaneo, Louis Géli, Frauke Klingelhoefer, Philippe Schnürle, Nabil Sultan, Daniel Aslanian, Maryline Mill, Mikaël Evain, Gwenaël Jouet.