The structure of the Diois and Baronnies [ranges] results from pre-Santonian, pre-Eocene, pre-Oligocene, pre-Miocene, and post-Miocene deformation. All the folds and overthrusts of east-west orientation, responsible for the main orogenic features of these two regions, result, whatever their age, from orogenic activity of provencal origin while the large north-south and nearly north-south faults that subdivide these folds arise from alpine thrusting. Structurally, the Diois and Baronnies ranges are strictly provencal ranges that are only related to the Subalpine ranges by their final north-south deformation.

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