MICHAUD , Francois

The Ecuadorian convergent margin is characterized by the subduction of the Nazca oceanic plate beneath South America at an average of 6-7 cm/year (Nocquet et al., 2014). The geodynamic evolution of the margin is influenced by the subduction of the Carnegie Ridge and by the NE migration of the North-Andean Block.Along the continental shelf, the...

Extensional faults are often observed along subduction zones as a response of a margincollapse. However, their role remain underestimated within the structural evolution offorearc systems. In southern Ecuador, the oblique subduction of the Nazca Platebeneath South America led to the formation of the Cretaceous-Miocene NW-SEChongón-Colonche...

Extensional faults are often observed along subduction zones as a response of a margincollapse. However, their role remain underestimated within the structural evolution offorearc systems. In southern Ecuador, the oblique subduction of the Nazca Platebeneath South America led to the formation of the Cretaceous-Miocene NW-SEChongón-Colonche...

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International audience

Correlations between marine distal ash layers and continental proximal volcanic deposits constitute a strong tool to investigate the eruptive chronology of an active volcanic arc, to constrain the detailed stratigraphy of the marine sediments, as well as help constraining the magnitude of some large explosive eruptions.In the Andean Northern...

In active subduction zones, the sum of the deformation over many seismic cycles accounts for the long-term cumulated deformation of the forearc. Along the Andean coast, several studies have suggested a correlation between the seismic segmentation of the megathrust and the morpho-tectonic segmentation of the forearc. Large megathrust earthquakes...