Photomosaic and interpreted log of Changing wind paleosismological trench. Caption : U10: brown modern soil containing a few clay and roots; U20: unstratified loess unit with a few clay and a few centimetric clasts of variable size; U30: Unit with numerous unsorted centimetric to decimetric clasts, poorly rolled, with gravelly-sandy matrix; U40: Poorly stratified and poorly consolidated gravelly unit with centimetric clasts and fluvial sandy lenses; U41: consolidated and carbonated silty-sandy unit; U50. Poorly consolidated, unsorted unit with numerous centimetric to decimetric clasts into a gravelly-sandy matrix (similar to U40); U60: Poorly stratified clastic unit (few centimetric clasts) in an abundant brown sandy-silty matrix. Faults are chronologically ordered from ancient (yellow) to recent ones (red). Blues lines are event horizons. All dates are cal BP ages.