3D progressive evolution of a syncline depocentre from growth turbidite strata: the Annot syncline, SE France

Resumo

The Annot syncline is one of the synclinal remnants of the Tertiary Alpine foreland basin,which was mainly structured during the Paleocene and filled during the Eocene-Oligocene by a marinetransgressive succession. The upper unit consists in the Annot Sandstone formation deposited in a fandelta-fed turbidite setting. New detailed structural data from the Annot depocentre indicate a progressivelimb rotation during deposition of the Annot Sandstone. These data are used to build a 3D modelof the syncline in Gocad software that documents turbidite depocentre evolution. Trishear modellingconstrains the role and interaction of regional thrusts and fault propagation folds in depocentre development.