Fragmentation of the Adriatic Promontory: New Chronological Constraints From Neogene Shortening Rates Across the Southern Alps (NE Italy)

International audienceKey-points Folded alluvial surfaces and balanced cross-section constrain post-LGM and Neogene shortening-rates Decrease in shortening-rate and change in compression direction are inferred at 1-2 Ma Kinematic reorganization is best explained by a shift from Nubia-driven to Adria-driven convergence Abstract The eastern Southern Alps are located at the northern tip of the Adria microplate, which imposes 2.0-2.5-mm/yr of N-S-convergence relative to stable Eurasia. We map surface evidence of recent folding/faulting in this area from a 5-m-DEM. In the eastern part of the belt, observations reveal a 30-km-wide zone of active folding composed of at least five growing anticlines. The most recent ones warped the post-glacial alluvial surface by